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1. Effluent solids recirculation to municipal sludge digesters enhances long-chain fatty acids degradation capacity

Author:
Sepehr Shakeri Yekta; Tong Liu; Thuane Mendes Anacleto; Mette Axelsson Bjerg; Luka Šafarič; Xavier Goux; Anna Karlsson; Annika Björn; Anna Schnürer
Source:
Biotechnology for biofuels 2021 v.14 no.1 pp. 56
ISSN:
1754-6834
Subject:
Archaea; Smithella; Syntrophomonas; anaerobic digestion; biogas; feeding frequency; gas production (biological); genes; methane production; microbial communities; oleic acid; sludge; sulfides
Abstract:
... BACKGROUND: Slow degradation kinetics of long-chain fatty acids (LCFA) and their accumulation in anaerobic digesters disrupt methanogenic activity and biogas production at high loads of waste lipids. In this study, we evaluated the effect of effluent solids recirculation on microbial LCFA (oleate) degradation capacity in continuous stirred-tank sludge digesters, with the overall aim of providing o ...
DOI:
10.1186/s13068-021-01913-1

2. Feeding frequency affects the growth performance, nutrient digestion and absorption of growing pigs with the same daily feed intake

Author:
Menglan Jia; He Zhang; Jie Xu; Yong Su; Weiyun Zhu
Source:
Livestock science 2021 v.250 pp. 104558
ISSN:
1871-1413
Subject:
Duroc; absorption; alpha-glucosidase; animal husbandry; average daily gain; body weight; carboxylic ester hydrolases; cholecystokinin; chymotrypsin; crude protein; diet; digestibility; digestion; duodenum; fatty acid transport proteins; fatty acids; feed intake; feeding frequency; gastric inhibitory polypeptide; gene expression; glucagon-like peptide 1; growth performance; ileum; pancreas; pepsin; plasma membrane; sucrose alpha-glucosidase; swine; trypsin; tyrosine
Abstract:
... Feeding-frequency regimen is an important part of animal husbandry and production, which can influence the feeding behavior and regulate the growth of animals. The present study was conducted to investigate the growth, digestion and absorption functions of growing pigs under different feeding frequencies with the same total daily feed intake. Twenty-four Duroc × Landrance × Yorkshire growing pigs ...
DOI:
10.1016/j.livsci.2021.104558

3. Hydrogen peroxide oxygenation and disinfection capacity in recirculating aquaculture systems

Author:
Desislava Bögner; Mirko Bögner; Frederike Schmachtl; Nicolas Bill; Jörn Halfer; Matthew J. Slater
Source:
Aquacultural engineering 2021 v.92 pp. 102140
ISSN:
0144-8609
Subject:
Dicentrarchus labrax; aquacultural engineering; bacterial communities; biofilters; blood plasma; case studies; cortisol; disinfection; dosage; feeding frequency; fish; glucose; hydrogen peroxide; microbial load; oxygen; rearing; recirculating aquaculture systems; salinity; stocking rate; tanks; temperature; water
Abstract:
... Hydrogen peroxide (H₂O₂) treatment is an alternative for disinfection in aquaculture, which may be advantageous as it dissociates and disinfects while increasing water oxygen concentration. Yet, accurate dosing remains undeveloped in Recirculating Aquaculture Systems (RAS). Dosage requirements can depend on organic burden, stocking density, feeding frequency, salinity, temperature and biofilter pe ...
DOI:
10.1016/j.aquaeng.2020.102140

4. Hyperspectral Remote Sensing Images Deep Feature Extraction Based on Mixed Feature and Convolutional Neural Networks

Author:
Jing Liu; Zhe Yang; Yi Liu; Caihong Mu
Source:
Remote Sensing 2021 v.13 no.13 pp. -
ISSN:
2072-4292
Subject:
branches; branching; design; exhibitions; extracts; feeding frequency; image analysis; mixing; neural networks; principal component analysis; remote sensing; solutions; weight
Abstract:
... To achieve effective deep fusion features for improving the classification accuracy of hyperspectral remote sensing images (HRSIs), a pixel frequency spectrum feature is presented and introduced to convolutional neural networks (CNNs). Firstly, the fast Fourier transform is performed on each spectral pixel to obtain the amplitude spectrum, i.e., the pixel frequency spectrum feature. Then, the obta ...
DOI:
10.3390/rs13132599

5. Sugar feeding by parasitoids inside and around vineyards varies with season and weed management practice

Author:
Miriam Kishinevsky; Tamar Keasar
Source:
Agriculture, ecosystems & environment 2021 v.307 pp. 107229
ISSN:
0167-8809
Subject:
Angiospermae; agriculture; biological control agents; ecosystems; environmental factors; feeding frequency; foraging; habitats; information; laboratory experimentation; longevity; parasitoids; pesticide application; planning; planting; prevalence; spring; sugar feeding; sugars; testing; vineyards; weed control; winter
Abstract:
... Feeding on sugar-rich resources dramatically prolongs lifespan and increases foraging performance in most parasitoids. The physiological and fitness effects of sugar feeding were studied in many parasitoid species under lab conditions, but far fewer studies examined them in the field. Even less is known about the environmental conditions that affect the prevalence of sugar feeding in natural paras ...
DOI:
10.1016/j.agee.2020.107229

6. The digestive function of gilthead seabream juveniles in relation to feeding frequency

Author:
Neda Gilannejad; Francisco J. Moyano; Gonzalo Martínez-Rodríguez; Manuel Yúfera
Source:
Aquaculture 2021 v.531 pp. 735867
ISSN:
0044-8486
Subject:
Sparus aurata; acidification; appetite; circadian rhythm; enzyme activity; farmed fish; feeding frequency; food intake; gastrointestinal system; gene expression; genes; hydrolysis; ingestion; juveniles; nutrient transport; nutrients; pH; pepsin; photoperiod; proteolysis; trypsin; zymogens
Abstract:
... A better knowledge of daily digestive function may help to improve the feeding efficiency in farmed fish species. In this study, daily expression profiles of key genes related to the circadian system (arntl1, clock, per3 and cry1), nutrients hydrolysis (pga, atp4a, try, ctrb, cel1b, pla2, and amy2a), appetite control and food intake (ghrl and cck), and nutrient transport (slc15a1) were assessed in ...
DOI:
10.1016/j.aquaculture.2020.735867

7. Alternate weekly exchanges of feeding regime affect the diversity of intestinal microbiota and immune status of Nile tilapia Oreochromis niloticus

Author:
Ahmed H. Sherif; Mofid Y. Gouda; Nehal A. Naena; Abeer H. Ali
Source:
Aquaculture research 2020 v.51 no.10 pp. 4327-4339
ISSN:
1355-557X
Subject:
Aeromonas hydrophila; Edwardsiella; Lactobacillus; Oreochromis niloticus; Pseudomonas; antibacterial properties; bacterial infections; blood serum; feeding frequency; fish; fish health; goblet cells; interleukin-10; intestinal microorganisms; intestines; muscles; respiratory burst; starvation; survival rate; tumor necrosis factor-alpha; villi
Abstract:
... The intestinal microbiota play an important role in the maintenance of the fish health. In this study, 150 Oreochromis niloticus were divided into five groups (G1–G5) and were subjected to alternate weekly exchange of feeding rate and frequency (3, 3, 1.5, 1.5 and 0%) and (2, 1, 2, 1 and 0 time), respectively, for 8 weeks. Enumeration of total intestinal bacteria revealed that the abundance of Lac ...
DOI:
10.1111/are.14778

8. Body condition score, parity, shelter cleanliness and male proximity: Highly associated non-genetic factors with post-partum anestrus in Murrah buffalo in field conditions

Author:
Thota Venkata Chaitanya Kumar; Davinder Sharma; Gangu Naidu Surla; Gowdar Veerapa Vedamurthy; Dheer Singh; Suneel Kumar Onteru
Source:
Animal reproduction science 2020 v.214 pp. 106282
ISSN:
0378-4320
Subject:
anestrus; body condition; buffaloes; data analysis; farmers; feeding frequency; linear models; males; milk; milking; nutrition; oxytocin; parturition; postpartum interval; postpartum period; udders; villages
Abstract:
... Postpartum anestrus (PPA) is a major reproductive problem in buffalo. Although both genetic and non-genetic factors influence the incidence of PPA, identifying associated non-genetic factors would be helpful for effective management of this problem. No systematic study, however, has been conducted to identify the association of non-genetic factors with PPA in buffalo, especially in field condition ...
DOI:
10.1016/j.anireprosci.2020.106282

9. Changes in the gut microbiome and enzymatic profile of Tenebrio molitor larvae biodegrading cellulose, polyethylene and polystyrene waste

Author:
Sebastian W. Przemieniecki; Agnieszka Kosewska; Sławomir Ciesielski; Olga Kosewska
Source:
Environmental pollution 2020 v.256 pp. 113265
ISSN:
0269-7491
Subject:
Actinobacteria; Agrobacterium; Bacteroides; Lactococcus; Nitrosomonas; Nitrospirae; Pantoea; Planctomycetes; Selenomonas; Tenebrio molitor; alpha-L-fucosidase; alpha-glucosidase; alpha-mannosidase; beta-galactosidase; beta-glucosidase; beta-glucuronidase; cellulose; chitinase; diet; digestive tract; esterases; feeding frequency; insect larvae; intestinal microorganisms; leucine; microbial communities; microbiome; nitrogen-fixing bacteria; oatmeal; oats; polyethylene; polystyrenes; wastes
Abstract:
... Recent studies have demonstrated the ability of mealworm (Tenebrio molitor) for plastic degradation. This study is focused on changes in microbiome structure depending on diets. Microbial community obtained from oat and cellulose diet formed similar group, two kinds of polyethylene formed another group, while polystyrene diet showed the highest dissimilarity. The highest relative abundance of bact ...
DOI:
10.1016/j.envpol.2019.113265

10. Cloning of hepatic lipase and the effects of dietary nutrition on hepatic lipase expression in genetically improved farmed tilapia (Oreochromis niloticus)

Author:
Ting Liu; Kai Huang; Yimin Zheng; Wu Gan; Teng Zuo; Ting Wang
Source:
Fish physiology and biochemistry 2020 v.46 no.3 pp. 921-930
ISSN:
0920-1742
Subject:
Oreochromis niloticus; amino acids; aquaculture; bioinformatics; body weight; choline; complementary DNA; dietary fat; farmed fish; feeding frequency; genes; genetic improvement; lipid metabolism; lipids; liver; molecular cloning; nucleotide sequences; quantitative polymerase chain reaction; rapid amplification of cDNA ends; triacylglycerol lipase
Abstract:
... Hepatic lipase is an important gene in lipid metabolism, which is crucial in the growth of fish. In this study, the cDNA sequence of genetically improved farmed tilapia (GIFT) HL gene was cloned by aimed rapid amplification of cDNA ends (RACE) method. Then, the characteristics of HL were analyzed with bioinformatics methods, and the expression of HL was assessed by the quantitative real-time PCR. ...
DOI:
10.1007/s10695-019-00759-7

11. Effect of diet, maintenance frequency, and environmental conditions on the rearing of Orius insidiosus (Hemiptera: Anthocoridae) in Neotropical highlands

Author:
Marco A. Díaz; Jhon Avellaneda; Daniel Rodríguez
Source:
International journal of tropical insect science 2020 v.40 no.3 pp. 503-512
ISSN:
1742-7592
Subject:
Frankliniella occidentalis; Neotropics; Orius insidiosus; Sitotroga cerealella; adults; batch systems; biological control; diet; environmental factors; feeding frequency; highlands; mass rearing; natural enemies; oviposition
Abstract:
... To standardize and optimize the mass rearing of Orius insidiosus (Say) (Hemiptera: Anthocoridae), an important natural enemy of the western flower thrips Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), a method using a production batch system for the rearing of this predator was evaluated. A total of 28 production batches (one batch was defined as a set of cohorts) were evaluated, ...
DOI:
10.1007/s42690-020-00098-8

12. Effect of different feeding regimes on the growth performance, antioxidant activity, and health of Nile tilapia, Oreochromis niloticus

Author:
Doaa A. El-Araby; Shimaa A. Amer; Alshimaa A. Khalil
Source:
Aquaculture 2020 v.528 pp. 735572
ISSN:
0044-8486
Subject:
Oreochromis niloticus; antioxidant activity; antioxidants; blood serum; body fat; body weight changes; crude protein; dry matter content; enzyme activity; fasting; feed conversion; feed intake; feed prices; feeding frequency; fingerlings; glucose; growth performance; histology; histopathology; intestines; lipid content; liver; protein efficiency ratio; serum albumin; superoxide dismutase; tissues; triacylglycerols; weight gain
Abstract:
... The present study aimed to evaluate the effects of using different feeding regimes on the growth performance, economic efficiency, antioxidant status, and blood biochemical parameters of Nile tilapia, Oreochromis niloticus fingerlings for 10 weeks. Three hundred and sixty healthy fingerlings with average initial weight 16.9 ± 0.44 g were randomly allotted to 2 × 3 factorial design consisted of two ...
DOI:
10.1016/j.aquaculture.2020.735572

13. Effect of feeding frequency on growth performance, blood metabolites, proximate composition and digestive enzymes of Lebranche mullet (Mugil liza) Juveniles

Author:
Ewerton Calixto da Silva; Fabio Carneiro Sterzelecki; Luciana Alves Musialak; Juliet Kiyoko Sugai; Jorgelia de Jesus Pinto Castro; Fabiola Santiago Pedrotti; Caio Magnotti; Filipe dos Santos Cipriano; Vinicius Ronzani Cerqueira
Source:
Aquaculture research 2020 v.51 no.3 pp. 1162-1169
ISSN:
1355-557X
Subject:
Mugil liza; amylases; blood; cholesterol; enzyme activity; feed conversion; feed intake; feeding frequency; fish; glucose; growth performance; juveniles; lipid content; metabolites; nutrients; protein content; proteinases; proximate composition; satiety; triacylglycerol lipase; triacylglycerols
Abstract:
... This study verified the effects of feeding frequency on growth, blood metabolites, digestive enzyme activities (alkaline protease, acid protease, amylase and lipase) and proximate composition of Lebranche mullet juveniles. Fish with initial weight of 13.6 ± 0.7 g were distributed in twelve tanks and fed one, three, five and seven times per day to apparent satiation for 60 days. While the final wei ...
DOI:
10.1111/are.14466

14. Effect of feeding frequency on growth performance, reproduction efficiency and skin coloration of rusty cichlids (Iodotropheus sprengerae)

Author:
Onur Karadal; Gürel Türkmen; Derya Güroy
Source:
Journal of applied aquaculture 2020 v.32 no.2 pp. 124-138
ISSN:
1545-0805
Subject:
Cichlidae; body weight; cost effectiveness; diet; fecundity; feeding frequency; fiberglass; fish; freshwater; growth performance; labor; satiety; sex ratio; specific growth rate
Abstract:
... In the present study, the effects of five different feeding frequencies including every other day (2F1), one (F1), two (F2), three (F3), and four (F4) times daily on growth, reproduction, the coloration of rusty cichlid (mean body weight 2.04 ± 0.01 g and mean total length 4.35 ± 0.01 cm) were investigated. The trial was carried out in 15 100-L fiberglass circular tanks conducted to 4000-L freshwa ...
DOI:
10.1080/10454438.2019.1642282

15. Effect of feeding frequency on the growth performance, carcass traits, and apparent nutrient digestibility in geese

Author:
Z.L. Liu; J.J. Xue; X.F. Huang; Y. Luo; M.R. Liang; C.J. Li; Q.G. Wang; C. Wang
Source:
Poultry science 2020 v.99 no.10 pp. 4818-4823
ISSN:
0032-5791
Subject:
ad libitum feeding; calcium; carcass characteristics; compensatory growth; digestibility; feed conversion; feed intake; feeding frequency; gastrointestinal system; geese; growth performance; phosphorus
Abstract:
... This study was conducted to determine the effect of feeding frequency on growth performance, carcass traits, and apparent nutrient digestibility in geese from 28 to 70 D of age. In experiment 1, a total of 240 geese were distributed in a completely randomized design into 4 treatments and 6 replicates of 10 birds each. The treatments were free access to the feeder (ad libitum) and access to the fee ...
DOI:
10.1016/j.psj.2020.06.024

16. Effect of feeding frequency on the white shrimp Litopenaeus vannamei during the pilot‐scale nursery phase of a superintensive culture in a biofloc system

Author:
Wilson Wasielesky Jr.; Aline Bezerra; Luis Poersch; Flávia Banderó Hoffling; Dariano Krummenauer
Source:
Journal of the World Aquaculture Society 2020 v.51 no.5 pp. 1175-1191
ISSN:
0893-8849
Subject:
Litopenaeus vannamei; biofloc technology; biomass; feed conversion; feeding frequency; greenhouses; growth performance; microorganisms; operating costs; postlarvae; shrimp; tanks; water quality
Abstract:
... Feeding frequencies influence growth and feeding efficiencies and thus knowing the optimal protocol is important to minimize operational costs. The present study evaluated different feeding frequencies during the pilot‐scale nursery phase of a biofloc system: T1 (1 feeding/day), T3 (3 feedings/day), and T6 (6 feedings/day), each with three replicates. In a greenhouse with nine 35 m² tanks, the pos ...
DOI:
10.1111/jwas.12694

17. Effects of Bacillus lincheniformis feeding frequency on the growth, digestion and immunity of Haliotis discus hannai

Author:
Gao Xiaolong; Ke Caihuan; Wu Fucun; Li Xian; Liu Ying
Source:
Fish & shellfish immunology 2020 v.96 pp. 1-12
ISSN:
1050-4648
Subject:
Bacillus licheniformis; Haliotis discus hannai; abalone; acid phosphatase; bacteria; body weight; carboxylic ester hydrolases; cellulose; digestion; enzyme activity; feed conversion; feeding frequency; genes; hemocytes; immune response; mortality; respiratory burst; specific growth rate; superoxide anion; superoxide dismutase; wastes
Abstract:
... To study the effects of Bacillus lincheniformis feeding frequency on the survival and growth of Haliotis discus hannai abalone, we measured the expression levels of nonspecific immune genes and monitored the anti-Vibrio parahaemolyticus immune reaction. H. discus hannai (shell length: 32.75 ± 2.63 mm, body weight: 4.91 ± 0.34 g) was selected to perform a 70 d laboratory culture experiment includin ...
DOI:
10.1016/j.fsi.2019.11.038

18. Effects of different feeding frequencies on growth, feed utilisation, digestive enzyme activities and plasma biochemistry of gilthead sea bream (Sparus aurata) fed with different fishmeal and fish oil dietary levels

Author:
Serena Busti; Alessio Bonaldo; Francesco Dondi; Damiano Cavallini; Manuel Yúfera; Neda Gilannejad; Francisco Javier Moyano; Pier Paolo Gatta; Luca Parma
Source:
Aquaculture 2020 v.529 pp. 735616
ISSN:
0044-8486
Subject:
Sparus aurata; chymotrypsin; cortisol; creatinine; diet; digestibility; electrolytes; environmental sustainability; enzyme activity; farms; feed conversion; feeding frequency; fish; fish culture; fish feeding; fish feeds; fish health; fish meal; fish oils; ingredients; kidneys; pepsin; sodium; trypsin; trypsin inhibitors; vegetables
Abstract:
... In the context of Mediterranean aquaculture many efforts have been made in terms of reducing marine-derived ingredients in aquafeed formulation. On the other hand, little attention has been paid to the manipulation of feeding frequency at the on-growing phase, where the high costs related to feeding procedures and the optimisation of feed efficiency and fish health are key aspects for the economic ...
DOI:
10.1016/j.aquaculture.2020.735616

19. Effects of different feeding regimes on juvenile black rockfish (Sebastes schlegilii) survival, growth, digestive enzyme activity, body composition and feeding costs

Author:
Haoyu Guo; Jonathan A. C. Roques; Miao Li; Xiumei Zhang
Source:
Aquaculture research 2020 v.51 no.10 pp. 4103-4112
ISSN:
1355-557X
Subject:
Sebastes melanops; animal growth; body fat; body weight; carboxylic ester hydrolases; digestive enzymes; enzyme activity; experimental design; feed conversion; feed prices; feeding frequency; growth performance; intestines; juveniles; lipid content; restricted feeding; satiety
Abstract:
... The objective of this study was to establish a proper feeding regime for juvenile black rockfish (Sebastes schlegilii) intended for stock enhancement. We used a combined experimental design to assess the effects of different feeding rates (1%, 3% and 5% body weight per day (BW/day)) and feeding frequencies (apparent satiety or restricted feeding 1 to 3 times daily) on survival, growth, digestive e ...
DOI:
10.1111/are.14753

20. Effects of feeding frequency and protein source in milk replacer for Holstein calves

Author:
K.D. Grice; K.M. Glosson; J.K. Drackley
Source:
Journal of dairy science 2020 v.103 no.11 pp. 10048-10059
ISSN:
0022-0302
Subject:
Holstein; blood; blood proteins; blood sampling; body weight; calves; colostrum; feed conversion; feeding frequency; females; group housing; hips; lipid content; males; milk replacer; protein sources; wheat protein; whey protein
Abstract:
... Whey proteins are a primary component of milk replacers (MR) and are considered the gold standard for calves. Alternative protein sources may decrease MR cost if calf performance is similar. A blend of bovine plasma protein and modified wheat protein might be a good partial replacement for whey protein. Usually MR is fed twice daily, but feeding 3 times daily might increase efficiency of nutrient ...
DOI:
10.3168/jds.2020-19041

21. Effects of feeding frequency during lactation in primiparous sows on reproduction performance and diurnal rhythm of endocrine profiles at the weaning-to-ovulation interval

Author:
Li Wu; Haiwen Zhang; Kang Xu; Xihong Zhou
Source:
Biological rhythm research 2020 v.51 no.4 pp. 535-542
ISSN:
1744-4179
Subject:
Yorkshire (swine breed); circadian rhythm; cortisol; estrus; feeding frequency; glucose; insulin; lactation; landraces; luteinizing hormone; reproductive efficiency; reproductive performance; sows
Abstract:
... Whether the diurnal rhythm of endocrine hormones in sows are affected by feeding frequency remains to be studied. The present study was conducted to investigate the effects of feeding frequency during lactation in primiparous sows on the diurnal rhythm of glucose, insulin, cortisol and luteinizing hormone (LH) levels during the weaning-to-ovulation interval, as well as their reproductive efficienc ...
DOI:
10.1080/09291016.2018.1543632

22. Effects of feeding frequency on growth, feed utilization, digestive enzyme activity and body composition of Litopenaeus vannamei in biofloc-based zero-exchange intensive systems

Author:
Wujie Xu; Yu Xu; Haochang Su; Xiaojuan Hu; Yunna Xu; Zhuojia Li; Guoliang Wen; Yucheng Cao
Source:
Aquaculture 2020 v.522 pp. 735079
ISSN:
0044-8486
Subject:
Litopenaeus vannamei; amylases; biofloc technology; body composition; carboxylic ester hydrolases; crude protein; digestion; digestive enzymes; enzyme activity; feed conversion; feeding frequency; juveniles; monitoring; protein deposition; protein efficiency ratio; proteinases; rearing; shrimp; shrimp culture; stomach; survival rate; tanks; trays; water content; water quality
Abstract:
... An eight-week feeding experiment was conducted to investigate the effects of daily feeding frequency on the growth, feed utilization, digestive enzyme activity and body composition of Litopenaeus vannamei juvenile reared in biofloc-based zero-exchange intensive culture systems. The experiment was carried out in twelve tanks with 800 L of biofloc-rich water. Juvenile shrimp (1.52 ± 0.37 g) were sto ...
DOI:
10.1016/j.aquaculture.2020.735079

23. Feeding management strategies to optimize the use of suspended feed for Nile tilapia (Oreochromis niloticus) cultivated in bioflocs

Author:
Marcos Antônio da Silva; Érika Ramos de Alvarenga; Franklin Fernando Batista da Costa; Eduardo Maldonado Turra; Gabriel Francisco de Oliveira Alves; Ludson Guimarães Manduca; Suellen Cristina Moreira de Sales; Namíbia Rizzari Leite; Vinícius Monteiro Bezerra; Stefani Grace da Silva Moraes; Edgar de Alencar Teixeira
Source:
Aquaculture research 2020 v.51 no.2 pp. 605-615
ISSN:
1355-557X
Subject:
Oreochromis niloticus; ammonium nitrogen; biofloc technology; body fat; body protein; carbon; carbon nitrogen ratio; dissolved oxygen; experimental design; feed conversion; feeding frequency; feeding methods; fingerlings; fish culture; hepatosomatic index; nutritive value; protein content; satiety; sugarcane; water quality
Abstract:
... Feeding strategies of tilapia (initial average weight: 32 g) cultivated with Biofloc technology (BFT) (carbon source: sugarcane, C:N ratio: 6:1) for 56 days were studied. A 4 × 3 factorial experimental design was used with four feeding frequencies (one, two, three and four times a day) and three feeding rates (50%, 75% and 100% consumption in relation to apparent satiety), with four replicates. Lo ...
DOI:
10.1111/are.14408

24. Implications of feeding frequency, prey size and condition, and intraspecific competition for the commercial aquaculture of the nudibranch Berghia stephanieae

Author:
Estela A. Monteiro; Arthur Z. Güth; Thomás N. S. Banha; Paulo Y. G. Sumida; Miguel Mies
Source:
Journal of the World Aquaculture Society 2020 v.51 no.1 pp. 244-254
ISSN:
0893-8849
Subject:
adults; aesthetics; aquaculture; aquariums; biological control; breeding stock; fecundity; feeding frequency; industry; intraspecific competition; invertebrates; juveniles; mortality; pests
Abstract:
... Marine ornamental aquaculture is a growing industry. Although most species are cultured for aesthetic purposes, there is increasing interest in organisms that provide functional services. Nudibranchs provide an example in which they act as biological controls by consuming aquaria pests. Berghia stephanieae is a commercially relevant nudibranch that feeds on Exaiptasia anemones, which overgrow sess ...
DOI:
10.1111/jwas.12645

25. Influence of feeding frequency on diurnal variations in liver and muscle RNA/DNA ratios in Misgurnus anguillicaudatus

Author:
Quansen Xie
Source:
Aquaculture research 2020 v.51 no.12 pp. 5050-5055
ISSN:
1355-557X
Subject:
DNA; Misgurnus anguillicaudatus; RNA; circadian rhythm; diurnal variation; fasting; feeding frequency; liver; muscle tissues; muscles
Abstract:
... We investigated the effect of the feeding regimen (group 1: fed twice daily at 8:00 and 18:00 for 28 days followed by 5 days of fasting; group 2: fed twice daily at 8:00 and 18:00 for 28 days and then fed once daily at 8:00 for 5 days; and group 3: fed twice daily at 8:00 and 18:00 for 33 days) on the circadian rhythms of the RNA/DNA ratio in the liver and muscle of the loach Misgurnus anguillicau ...
DOI:
10.1111/are.14843

26. Juvenile Cassiopea andromeda medusae are resistant to multiple thermal stress events

Author:
Thomás N. S. Banha; Miguel Mies; Arthur Z. Güth; Christopher M. Pomory; Paulo Y. G. Sumida
Source:
Marine biology 2020 v.167 no.11 pp. 173
ISSN:
0025-3162
Subject:
Artemia; Miozoa; Scyphozoa; bleaching; chlorophyll; climate change; coral reefs; diet; fauna; feeding frequency; heat stress; heat tolerance; invertebrates; juveniles; models; oceans; prediction; symbionts; symbiosis; temperature
Abstract:
... Oceans are undergoing successive heatwaves. Several invertebrate taxa associate with dinoflagellates and are susceptible to bleaching caused by heat stress. Although the impacts of a single bleaching event have been well documented, the consequences of successive events are less understood. We investigated the effects of multiple thermal stress events on juvenile Cassiopea andromeda, while also ad ...
DOI:
10.1007/s00227-020-03792-w

27. Optimum feeding frequency of juvenile largemouth bass (Micropterus salmoides) reared in in-pond raceway recirculating culture system

Author:
Yuyu Wang; Suming Xie; Zhijuan Nie; Quanjie Li; Yi Sun; Nailin Shao; Jiancao Gao; Jiawen Hu; Pao Xu; Gangchun Xu
Source:
Fish physiology and biochemistry 2020 v.46 no.6 pp. 2197-2212
ISSN:
0920-1742
Subject:
Micropterus salmoides; alanine transaminase; alkaline phosphatase; antioxidant activity; antioxidants; aspartate transaminase; blood glucose; blood serum; body weight; catalase; cholesterol; diet; enzyme activity; feeding frequency; fish; gene expression; genes; glutathione peroxidase; insulin-like growth factor I; juveniles; lipoprotein lipase; lysozyme; malondialdehyde; messenger RNA; protein content; rearing; recirculating aquaculture systems; somatotropin; specific growth rate; superoxide dismutase; triacylglycerols; wages and remuneration; weight gain
Abstract:
... This study was conducted to determine the effects of feeding frequency on the growth, serum biochemical parameters, antioxidant status and hepatic growth hormone (GH), insulin-like growth factor I (IGF-I), lipoprotein lipase (LPL) and hepatic lipase (HL) gene expression levels of juvenile largemouth bass (Micropterus salmoides) reared in an in-pond raceway recirculating culture system (IPRS). Fish ...
DOI:
10.1007/s10695-020-00866-w

28. Oral administration of microencapsulated egg yolk immunoglobulin (IgY) in turbot (Scophthalmus maximus) to combat against Edwardsiella tarda 2CDM001 infections

Author:
Le Xu; Jian Che; Yongping Xu; Yan Chen; Yuan Li; Bilal Murtaza; Lili Wang; Meixia Zhang; Xiaoyu Li
Source:
Fish & shellfish immunology 2020 v.106 pp. 609-620
ISSN:
1050-4648
Subject:
Edwardsiella tarda; Scophthalmus maximus; antibacterial properties; bacterial infections; chitosan; disease prevention; dose response; egg yolk; enzyme-linked immunosorbent assay; erythrocyte count; farmed fish; feeding frequency; fish diseases; fish feeding; hemoglobin; hydrophobicity; immunoglobulin Y; interleukin-1beta; interleukin-8; kidneys; leukocyte count; messenger RNA; microencapsulation; oral administration; passive immunity; spleen; survival rate; tumor necrosis factor-alpha; turbot
Abstract:
... Edwardsiellosis, an extremely harmful disease can be caused by Edwardsiella tarda, severely restricts the development of turbot (Scophthalmus maximus) farming worldwide, especially in China. This study aimed to establish an effective and feasible prophylaxis by feeding chitosan-alginate coated egg yolk immunoglobulin (IgY) against E. tarda 2CDM001 infections in the process of turbot farming. Enzym ...
DOI:
10.1016/j.fsi.2020.08.024

29. Phenotypic and genetic correlations between feeding behaviours and feed efficiency in crossbred beef replacement females

Author:
C.A. Olson; C. Li; H. Block; L. McKeown; J.A. Basarab
Source:
Canadian journal of animal science 2020 v.100 no.4 pp. 781-785
ISSN:
0008-3984
Subject:
backfat; beef cows; beef production; cow feeding; crossbreds; dry matter intake; fat thickness; feed conversion; feeding frequency; forage; genotype-phenotype correlation; heifers; heritability; ultrasonography
Abstract:
... The objectives of this study were to identify the phenotypic and genetic relationships and heritability (h²) of feeding behaviours (FB) in replacement beef females. Between 2005 and 2017, heifers (N = 1394) were tested for feed intake using an electronic feed bunk system. The various FB were feeding duration (DUR; min d⁻¹), head down time (HD; min d⁻¹), feeding frequency (FREQ; events d⁻¹), time-t ...
DOI:
10.1139/cjas-2019-0212

30. The effect of feeding frequency on the growth, reproduction performance, body composition and digestive enzyme activity of Penaeus monodon broodstock

Author:
Song Jiang; Fa‐lin Zhou; Qi‐bin Yang; Jian‐hua Huang; Li‐shi Yang; Shi‐gui Jiang
Source:
Aquaculture research 2020 v.51 no.11 pp. 4623-4630
ISSN:
1355-557X
Subject:
Alitta succinea; Penaeus monodon; amylases; animal reproduction; body composition; breeding stock; carboxylic ester hydrolases; crude fat; crude protein; enzyme activity; fecundity; feeding frequency; gonads; hepatopancreas; metamorphosis; nauplii; nutrition; pepsin; reproductive performance; satiety; spawning; trypsin
Abstract:
... In this study, the effect of different feeding frequency (TA: twice/day, TB: 3 times/day, TC: 4 times/day) on the feeding, growth, reproductive performance, body composition and digestive enzyme activity of hepatopancreas of Penaeus monodon broodstock was compared. The living Nereis succinea were used to feed the P. monodon broodstock for 8 weeks to explore the most appropriate feeding frequency d ...
DOI:
10.1111/are.14808

31. The effect of milk feeding strategy and restriction of meal patterning on behavior, solid feed intake, and growth performance of male dairy calves fed via computer-controlled milk feeders

Author:
Margit Bak Jensen; Annedorte Jensen; Mogens Vestergaard
Source:
Journal of dairy science 2020 v.103 no.9 pp. 8494-8506
ISSN:
0022-0302
Subject:
Holstein; appetite; dairy calves; dairy farming; feed intake; feeding frequency; growth performance; hay; ingestion; males; milk; milk consumption; milk replacer; nutrient requirements; portion size; suckling; weaning
Abstract:
... Dairy calves are often offered milk allowance at a flat rate during the first 6 wk of life, although an initial high allowance followed by a stepwise reduction (step-down strategy) may correspond better to the calves' nutritional needs. The amount of milk offered per feeding is typically constant. However, during natural suckling, the daily number of milk meals (suckling frequency) declines with a ...
DOI:
10.3168/jds.2020-18166

32. The effect of milk quantity and feeding frequency on calf growth and behaviour

Author:
Ellen C. Jongman; Melanie J. Conley; Samantha Borg; Kym L. Butler; Andrew D. Fisher
Source:
Animal production science 2020 v.60 no.7 pp. 944-952
ISSN:
1836-0939
Subject:
blood sampling; body weight; cortisol; dairy calves; energy balance; feed intake; feeding frequency; feeding level; free fatty acids; glucose; hematocrit; hunger; males; milk; milk consumption; motivation; suckling
Abstract:
... Context Calves left with their dam to suckle will consume ~7–12 L/day; however, the amount of milk provided to dairy young calves removed from their dams may often be as low as 4 L/day, or 10% of their bodyweight. Aims This study compared once and twice daily feeding, as well as feeding levels of 10 and 20% of bodyweight and studied the effect on behaviour and metabolic indicators indicative of hu ...
DOI:
10.1071/AN19049

33. Density is more important than predation risk for predicting growth and developmental outcomes in tadpoles of spotted tree frog, Litoria spenceri (Dubois 1984)

Author:
Tracy Lynette Plenderleith; Christopher D. Johnstone; Richard D. Reina; David G. Chapple
Source:
Austral ecology 2019 v.44 no.7 pp. 1285-1297
ISSN:
1442-9985
Subject:
Litoria; feeding frequency; introduced species; metamorphosis; population density; predation; predator avoidance; predators; prediction; prey species; prioritization; risk; tadpoles; tail
Abstract:
... The diverse benefits of group living include protection against predators through dilution effects and greater group vigilance. However, intraspecific aggregation can decrease developmental rates and survival in prey species. We investigated the impact on tadpole development and behaviour of the interaction between population density and predation risk. Spotted tree frog (Litoria spenceri: Hylidae ...
DOI:
10.1111/aec.12807

34. Distinct feeding strategies of generalist and specialist spiders

Author:
Gabriel Pompozzi; Luis F. García; Lenka Petráková; Stano Pekár
Source:
Ecological entomology 2019 v.44 no.1 pp. 129-139
ISSN:
0307-6946
Subject:
Araneae; DNA; digestive system; feeding frequency; feeding methods; foraging; half life; phylogeny; polymerase chain reaction; predators
Abstract:
... 1. Feeding behaviour of generalist and specialist predators is determined by a variety of trophic adaptations. Specialised prey‐capture adaptations allow specialists to catch relatively large prey on a regular basis. As a result, specialists might be adapted to exploit each item of prey more thoroughly than do generalists. 2. It was expected that obligatory specialist cursorial spiders would feed ...
DOI:
10.1111/een.12683

35. Dosage and frequency effects of the microalgae Dunaliella sp. on the diet of Litopenaeus vannamei challenged with Vibrio parahaemolyticus

Author:
Diana Medina Félix; Ángel Isidro Campa Córdova; José Antonio López Elías; Luis Rafael Martínez Córdova; Gudelia Figueroa Preciado; Edilmar Cortés Jacinto; Antonio Luna González; Fernando Mendoza Cano; Nolberta Huerta Aldaz
Source:
Journal of invertebrate pathology 2019 v.161 pp. 14-22
ISSN:
0022-2011
Subject:
Dunaliella; Litopenaeus vannamei; Vibrio parahaemolyticus; antioxidant activity; carotenoids; cholesterol; enzyme activity; feeding frequency; flour; glucose; hemolymph; immune response; lactic acid; lipid peroxidation; microalgae; monophenol monooxygenase; prophenoloxidase; reproductive performance; shrimp; stress tolerance; superoxide dismutase; triacylglycerols
Abstract:
... Carotenoid sources in shrimp diets have shown to be effective for improving survival, growth, reproductive capacity, stress resistance, and also for diminishing disease. Dunaliella sp. is known to have high levels of β-carotenes, which works as pro-vitamin A, enhancing the immune response in shrimp. However, the administration of Dunaliella sp. in shrimp diet needs to be evaluated to determine the ...
DOI:
10.1016/j.jip.2018.12.010

36. Effect of type and feeding frequency of high-fibre feeds on intake, total tract digestibility and ruminal fermentation in beef steers fed a high-concentrate diet

Author:
A. López; H. O. Coria; M. A. Nazareno; E. M. García; R. A. Distel; J. I. Arroquy
Source:
Animal production science 2019 v.59 no.12 pp. 2245-2251
ISSN:
1836-0939
Subject:
alfalfa hay; ammonia; beef cattle; byproducts; cotton; crude protein; diet; digestibility; digestible dry matter; dry matter intake; fatty acid composition; feed concentrates; feeding frequency; pH; rumen fermentation; steers; total mixed rations; volatile fatty acids
Abstract:
... The inclusion of fibre in a total mixed ration (TMR) often has operational and economic constraints. The objective of the present study was to compare intake and ruminal fermentation of steers fed either a TMR or a diet with the fibre fraction fed separately from the concentrate fraction. Six ruminally fistulated steers were used in a six-treatments, four-period cross-over experiment. Treatment st ...
DOI:
10.1071/AN18014

37. Effects of Omega-3 fatty acid supplement and feeding frequency on insulin sensitivity and carcass characteristics in Mahabadi goat kids

Author:
S. Ataei Nazari; M. Ganjkhanlou; A. Z; H. Zakariapour Bahnamiri
Source:
Small ruminant research 2019 v.172 pp. 1-7
ISSN:
0921-4488
Subject:
body weight; calcium; carcass characteristics; diet; dry matter intake; feeding frequency; fish oils; glucose; glucose tolerance tests; insulin resistance; kids (goats); lipid content; metabolism; omega-3 fatty acids; visceral fat
Abstract:
... This study was conducted to investigate the potential effects of different fat sources including fish oil (FO; n-3 fatty acids source) and palm oil (PO; C16:0 source) in combination with different feeding frequency (FF) on performance, glucose metabolism and carcass characteristics of Mahabadi goat kids. Twenty eight Mahabadi goat kids were used in a factorial design with 4 treatments including 2 ...
DOI:
10.1016/j.smallrumres.2018.12.010

38. Effects of different feeding frequencies on growth, cataract development and histopathology of lumpfish (Cyclopterus lumpus L.)

Author:
Albert K.D. Imsland; Patrick Reynolds; Thor Magne Jonassen; Thor Arne Hangstad; Tor Anders Elvegård; Tonje Cecilie Urskog; Anna Hanssen; Bjørn Mikalsen
Source:
Aquaculture 2019 v.501 pp. 161-168
ISSN:
0044-8486
Subject:
Cylopterus lumpus; animal growth; animal tissues; body weight; cataract; eyes; feeding frequency; fish; fish feeding; hindgut; histology; histopathology; inflammation; intestines; leukocytes; liver
Abstract:
... Three duplicate groups of individually tagged lumpfish (mean initial weight: 22.3 ± 2.5 g) were fed either daily (7DW); four days per week (4DW) or three days per week (3DW) at a feeding rate of 2% body weight day⁻¹ for a period of 126 days. There were significant differences in growth rates between the groups with the 7DW fish having the highest growth rates. Cataract prevalence was 53% lower in ...
DOI:
10.1016/j.aquaculture.2018.11.026

39. Effects of feeding frequency of an elevated plane of milk replacer and calf age on behavior, and glucose and insulin kinetics in male Holstein calves

Author:
J. MacPherson; S. J. Meale; K. Macmillan; J. Haisan; C. J. Bench; M. Oba; M. A. Steele
Source:
Animal 2019 v.13 no.7 pp. 1385-1393
ISSN:
1751-732X
Subject:
Holstein; automation; blood glucose; blood sampling; catheters; dairy calves; dairy industry; feeding frequency; glucose; glucose tolerance tests; insulin; insulin resistance; males; milk replacer; portion size; statistical analysis
Abstract:
... Optimizing feeding regimens in early life to maximize lifelong growth and production are essential in the dairy industry. This study investigated the effects of milk replacer (MR) feeding frequency and calf age on behavior, and glucose and insulin kinetics of pre- and post-weaned calves fed an elevated plane of MR. Ten male Holstein calves (42.2±1.8 kg BW) were blocked by BW and randomly assigned ...
DOI:
10.1017/S175173111800294X

40. Effects of feeding frequency on fry and fingerlings of African catfish Clarias gariepinus

Author:
V.T. Okomoda; W. Aminem; A. Hassan; C.O. Martins
Source:
Aquaculture 2019 pp. 734232
ISSN:
0044-8486
Subject:
Artemia; Clarias gariepinus; ad libitum feeding; body weight; catfish; crude protein; diet; feeding frequency; feeding methods; fingerlings; lipid content; nutrient utilization
Abstract:
... This study examines the effect of different feeding frequencies on the growth and nutrient utilization of fry and fingerlings of African catfish Clarias gariepinus. The fry were fed ad libitum in triplicate with decapsulated Artemia cysts 1, 2, 3, 4, 5 or 6 times a day. However, the fingerlings were given an equal daily ration (15% body weight per day) of a commercial diet and administered in 1, 2 ...
DOI:
10.1016/j.aquaculture.2019.734232

41. Effects of feeding strategies on growth, biochemical parameters and waste excretion of juvenile arapaima (Arapaima gigas) raised in recirculating aquaculture systems (RAS)

Author:
Ricardo Uriel Pedrosa; Bruno Olivetti Mattos; Denise Soledade Peixoto Pereira; Marcelo Luís Rodrigues; Luís Gustavo Tavares Braga; Rodrigo Fortes-Silva
Source:
Aquaculture 2019 v.500 pp. 562-568
ISSN:
0044-8486
Subject:
Arapaima gigas; alanine transaminase; alkaline phosphatase; ammonium nitrogen; amylases; aspartate transaminase; blood plasma; body composition; carboxylic ester hydrolases; cholesterol; enzyme activity; excretion; feeding frequency; feeding methods; fish; glucose; intestines; juveniles; phosphorus; proteinases; recirculating aquaculture systems; satiety; self-feeders; tanks; wastes; water flow
Abstract:
... An 8-week experiment (trial 1) was conducted to determine the optimal feeding frequency for juvenile Arapaima gigas. Seventy-two fish (500.0 ± 50.9 g, mean ± S.E) were randomly assigned to 12 tanks (500 l) in recirculating aquaculture systems (RAS). Four treatments with three replicates each were considered: T1) fish fed using self-feeders (free choice to eat); T2) fish fed by hand to apparent sat ...
DOI:
10.1016/j.aquaculture.2018.10.058

42. Equine Contribution in Methane Emission and Its Mitigation Strategies

Author:
Mona M.M.Y. Elghandour; Moyosore Joseph Adegbeye; Alberto Barbabosa-Pilego; Nallely Rivero Perez; Saúl Rojas Hernández; Adrian Zaragoza-Bastida; Abdelfattah Z.M. Salem
Source:
Journal of equine veterinary science 2019 v.72 pp. 56-63
ISSN:
0737-0806
Subject:
Isoptera; Methanobacteriales; Methanomicrobiales; Methanosarcinales; Protozoa; acetogens; biochar; diet; energy; enzymes; feed intake; feeding frequency; fermentation; fermenters; genome; greenhouse gases; herbivores; hindgut; horses; methane; methane production; oil and gas industry; plant extracts; population growth; ruminants
Abstract:
... Greenhouses gas emission mitigation is a very important aspect of earth sustainability with greenhouse gasses reduction, a focus of agricultural and petrochemical industries. Methane is produced in nonruminant herbivores such as horses because they undergo hindgut fermentation. Although equine produce less methane than ruminant, increasing population of horses might increase their contribution to ...
DOI:
10.1016/j.jevs.2018.10.020

43. Expression of messenger RNA encoding two cellular metabolic regulators, AMP-activated protein kinase (AMPK) and O-GlcNAc transferase (OGT), in channel catfish: Their tissue distribution and relationship with changes in food intake

Author:
O. Abernathy; D. Kostner; P. Buer; M. Dougherty; A. Schmidtberger; R. Spainhour; A. Leiker; M. Vides; B. Teel; Y. Kobayashi
Source:
Comparative biochemistry and physiology 2019 v.235 pp. 12-21
ISSN:
1095-6433
Subject:
AMP-activated protein kinase; Ictalurus punctatus; fasting; feeding frequency; fish; food intake; gene expression; heart; hypothalamus; kidneys; liver; messenger RNA; metabolism; muscles; proteins; refeeding; spleen; tissue distribution; tissues
Abstract:
... AMP-activated protein kinase (AMPK) is considered as the master cellular metabolism regulator that activates various proteins, including O-GlcNAc transferase (OGT). Physiological roles of AMPK and OGT, including the relationship between their mRNA expression and food intake, are poorly understood in channel catfish. This study examined the tissue distribution of AMPK and OGT mRNA and changes in th ...
DOI:
10.1016/j.cbpa.2019.04.023

44. Feed intake, growth, feed utilization, body composition and waste output of juvenile hybrid bream at different feeding frequencies

Author:
Yubo Wu; Xing Ren; Jinhua Zhou; Haihan Lin; Xiujuan Wang; Hengjia Ma
Source:
Aquaculture nutrition 2019 v.25 no.2 pp. 292-297
ISSN:
1353-5773
Subject:
body fat; body weight; bream; crude protein; experimental diets; feed conversion; feed intake; feeding frequency; hybrids; juveniles; lipid content; lipids; nitrogen; nitrogen retention; phosphorus; satiety; wastes; weight gain
Abstract:
... An eight‐week feeding trial was conducted to evaluate the feed intake, growth, feed utilization, body composition and waste output of juvenile hybrid bream at different feeding frequencies (0.5, 1, 2, 3 or 4 meals/day). Fish (initial body weight of 10.6 ± 0.8 g) were fed to satiation at each feeding. The test diet contained 336 g/kg crude protein and 79 g/kg crude lipid. The weight gain significan ...
DOI:
10.1111/anu.12852

45. Feeding frequency for dusky grouper Epinephelus marginatus juveniles with automatic feeding system

Author:
Otávio Mesquita de Sousa; Nayara Yoshimini de Oliveira; Vanessa Villanova Kuhnen; Eduardo Gomes Sanches
Source:
Aquaculture research 2019 v.50 no.10 pp. 3009-3016
ISSN:
1355-557X
Subject:
Epinephelus marginatus; ammonia; biomass; feeding frequency; juveniles; mariculture; oxygen; pH; redox potential; saline water; salinity; specific growth rate; temperature; weight gain
Abstract:
... Salt‐water recirculation systems using automatic feeders are a new frontier for marine aquaculture. The definition of the feed frequency is fundamental for the correct use of automatic feeders. Different feeding frequencies (1, 3, 6, 12 and 18 times a day) using automatic feeders were evaluated in two experiments on the performance of the dusky grouper (Epinephelus marginatus) in salt‐water recirc ...
DOI:
10.1111/are.14259

46. Growth of Amazon ornamental fish Nannostomus beckfordi larvae (Steindachner, 1876) submitted to different stocking densities and feeding management in captivity conditions

Author:
Higo Andrade Abe; Joel Artur Rodrigues Dias; Natalino da Costa Sousa; Márcia Valéria Silva do Couto; Ryuller Gama Abreu Reis; Peterson Emmanuel Guimarães Paixão; Rodrigo Yudi Fujimoto
Source:
Aquaculture research 2019 v.50 no.8 pp. 2276-2280
ISSN:
1355-557X
Subject:
Artemia; Nannostomus; captive animals; condition factor; feeding frequency; nauplii; ornamental fish; specific growth rate; stocking rate
Abstract:
... The study evaluated productive performance of larvae Nannostomus beckfordi submitted to feeding management (Experiment one) and different stock density (Experiment two) in captivity conditions. The first experiment evaluated feeding rate (100 and 200 nauplii of artemia larvae⁻¹ day⁻¹) and feeding frequency (2 and 4× per day). Second experiment evaluated different stock density (1, 5, 10, 20, 40 la ...
DOI:
10.1111/are.14108

47. Historical Assumptions about the Predation Patterns of Yellow Anacondas (Eunectes notaeus): Are They Infrequent Feeders?

Author:
Bruno F. Camera; Everton B. P. Miranda; Raimundo P. Ribeiro; Mariano Barros; Juan Draque; Tomás Waller; Patrício A. Micucci; Cristian S. Dambros; Christine Strüssmann
Source:
Journal of herpetology 2019 v.53 no.1 pp. 47-52
ISSN:
1937-2418
Subject:
allometry; animal reproduction; fat body; feeding frequency; females; foraging; habitats; heart; hypertrophy; intestines; kidneys; liver; males; predation; snakes; stomach
Abstract:
... Size and function of digestive organs in snakes are modulated by feeding frequency and by the energetic demands of reproduction. This allows snakes to minimize costs and maximize the energetic gains from predation. Examination of Yellow Anacondas (Eunectes notaneus) acquired from sustainable management activities provided an opportunity to study the predation in this species. Field evidence poses ...
DOI:
10.1670/18-089

48. Indirect genetic effect model using feeding behaviour traits to define the degree of interaction between mates: an implementation in pigs growth rate

Author:
M. Ragab; M. Piles; R. Quintanilla; J. P. Sánchez
Source:
Animal 2019 v.13 no.2 pp. 231-239
ISSN:
1751-732X
Subject:
animal models; average daily gain; feeding frequency; finishing; heritability; model validation; phenotype; phenotypic variation; social behavior; swine; variance
Abstract:
... An alternative implementation of the animal model including indirect genetic effect (IGE) is presented considering pair-mate-specific interaction degrees to improve the performance of the model. Data consisted of average daily gain (ADG) records from 663 pigs kept in groups of 10 to 14 mates during the fattening period. Three types of models were used to fit ADG data: (i) animal model (AM); (ii) A ...
DOI:
10.1017/S1751731118001192
PubMed:
29871710 29871710

49. Light affects parental provisioning behaviour in a cavity‐nesting Passerine

Author:
Paweł Podkowa; Katarzyna Malinowska; Adrian Surmacki
Source:
Journal of avian biology 2019 v.50 no.11 pp. -
ISSN:
0908-8857
Subject:
Parus major; adults; energy; feeding frequency; lighting; nest boxes; nestlings; parents; vision
Abstract:
... Nocturnal bird species possess special adaptations to maximise visual efficiency under low light levels. However, some typically diurnal species also experience low‐light environments. For example, cavity‐nesting Passerines raise broods in dark cavities and search for food in light‐abundant surroundings. It is not clear whether they possess special adaptations for low light vision or breed in cavi ...
DOI:
10.1111/jav.02254

50. Modulation of lipid metabolism in juvenile yellow catfish (Pelteobagrus fulvidraco) as affected by feeding frequency and environmental ammonia

Author:
Muzi Zhang; Chengdong Hou; Ming Li; Yunxia Qian; Wenbin Xu; Fanxing Meng; Rixin Wang
Source:
Fish physiology and biochemistry 2019 v.45 no.1 pp. 115-122
ISSN:
0920-1742
Subject:
NADP-glucose-6-phosphate dehydrogenase; Tachysurus fulvidraco; ammonia; brain; carnitine palmitoyltransferase; fatty-acid synthase; feed conversion; feeding frequency; fish; gene expression; juveniles; lipid metabolism disorders; lipoprotein lipase; liver; messenger RNA; weight gain
Abstract:
... In the intensive culture systems, excessive feeding leads to ammonia accumulation, which results in lipid metabolism disorder. However, little information is available on the modulation of lipid metabolism in fish as affected by feeding frequency and ammonia stress. In this study, weight gain increased as feeding frequency increased from one to four times daily, but feed conversion ratio is opposi ...
DOI:
10.1007/s10695-018-0540-y