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1. Feed intake pattern of broiler chickens under intermittent lighting: Do birds eat in the dark?

Author:
Rodrigues, Inês; Choct, Mingan
Source:
Animal nutrition 2019 v.5 no.2 pp. 174-178
ISSN:
2405-6545
Subject:
broiler chickens,   etc   ; feed intake; feeding behavior; flocks; lighting;     Show all 5 Subjects
Abstract:
... This paper reflects the results of a short experiment conducted in parallel with a larger trial which aimed to test the assumption that ‘consumption of feed by broiler chickens during periods of darkness is largely negligible’. To that effect, on d 31, feeders of birds raised under intermittent lighting (IL), i.e. 1 h of light [1L]:3 h of dark (3D):1L:3D:1L:3D:1L:3D:2L:6D, were weighed at the onse ...
DOI:
10.1016/j.aninu.2018.12.002

2. Does grouping environmental enrichments together affect the way they are used by commercially housed broiler chickens?

Author:
Baxter, Mary; O’Connell, Niamh E.
Source:
Applied animal behaviour science 2019 v.210 pp. 52-59
ISSN:
0168-1591
Subject:
broiler chickens,   etc   ; bales; farms; oat hulls; pecking; straw;     Show all 6 Subjects
Abstract:
... Identifying the most attractive ways of presenting environmental enrichments in commercial broiler housing may encourage use and optimise their effectiveness. This study investigated the effect of grouping straw bales (SB), oat hulls (OH; as a dustbathing substrate) and pecking chain (Pe) together, compared to providing individual enrichments, on level of enrichment use and the behaviour of proxim ...
DOI:
10.1016/j.applanim.2018.10.017

3. Impact of different group sizes on plumage cleanliness and leg disorders in broilers

Author:
Kiani, Ali; von Borstel, Uta König
Source:
Livestock science 2019 v.221 pp. 52-56
ISSN:
1871-1413
Subject:
broiler chickens,   etc   ; animal welfare; dermatitis; dyschondroplasia; gait; hock; mortality; plumage; tibia;     Show all 9 Subjects
Abstract:
... The aim of the present study was to assess welfare and health parameters of broiler chickens housed in different group sizes. 6400 mixed-sex day-old broiler chicks were housed in four types of rectangular enclosures which provided 10 m2 [small], 30 m2 [medium], 100 m2 [large] and 500 m2 [very large] floor space. Per pen there were 100, 300, 1000 and 5000 birds, respectively and therefore constant ...
DOI:
10.1016/j.livsci.2019.01.013

4. Noninvasive quantification of yolk content using Vis-NIR spectroscopy and its effect on hatching time and gender of broiler chicken

Author:
Md, Syduzzaman; Afzal, Rahman; Alin, Khaliduzzaman; Fujitani, Shinichi; Kashimori, Ayuko; Suzuki, Tetsuhito; Ogawa, Yuichi; Kondo, Naoshi
Source:
Engineering in agriculture, environment and food 2019
ISSN:
1881-8366
Subject:
broiler chickens,   etc   ; absorbance; eggs; engineering; gender; hatching; models; regression analysis; spectroscopy;     Show all 9 Subjects
Abstract:
... Hatching window and the gender of hatching eggs were investigated in relation to the yolk content and yolk ratio (yolk to egg ratio) of the eggs. To quantify the amount of yolk noninvasively, a regression model from absorbance spectra (600–900 nm) was developed using known yolk content. This model was then used to determine the yolk content subsequently the yolk to albumen ratio of the hatching eg ...
DOI:
10.1016/j.eaef.2019.02.006

5. Validation by interlaboratory trials of EN ISO 10272 - Microbiology of the food chain - Horizontal method for detection and enumeration of Campylobacter spp. - Part 2: Colony-count technique

Author:
Jacobs-Reitsma, Wilma F.; Jongenburger, Ida; de Boer, Enne; Biesta-Peters, Elisabeth G.
Source:
International journal of food microbiology 2019 v.288 pp. 32-38
ISSN:
0168-1605
Subject:
broiler chickens,   etc   ; Campylobacter; cecum; chicken skin; food chain; meat; microbiology; raw milk; spinach;     Show all 9 Subjects
Abstract:
... The validation in an interlaboratory study of the International Standards Organization standard method for the enumeration of Campylobacter in foods (ISO 10272-2) was performed after preparation of the revised Standard based on scientifically sound and validated methods of analysis.The matrices selected for testing in the collaborative trial were frozen spinach, minced meat, raw milk, chicken skin ...
DOI:
10.1016/j.ijfoodmicro.2018.05.008

6. Relationship between peptide YY, cholecystokinin and fermentation products in fasted, re-fed and ad libitum fed broiler chickens

Author:
Melo-Duran, D.; Gonzalez-Ortiz, G.; Sola-Oriol, D.; Martinez-Mora, M.; Perez, J.F.; Bedford, M.R.
Source:
Animal feed science and technology 2019 v.247 pp. 141-148
ISSN:
0377-8401
Subject:
broiler chickens,   etc   ; blood; blood sampling; butyric acid; cecum; cholecystokinin; fermented foods; lighting; males; peptide YY; refeeding;     Show all 11 Subjects
Abstract:
... The objective of the present broiler study was to study the relationship between peptide tyrosine-tyrosine (PYY), cholecystokinin (CCK) and short-chain fatty acids (SCFA) in the blood and caecal contents, and whether a period of fasting followed by reintroduction of feed influences this relationship compared with an ad libitum fed control. A total of 72 male broilers with 37-days of age (Ross 308) ...
DOI:
10.1016/j.anifeedsci.2018.11.007

7. Basal and dynamics mRNA expression of muscular HSP108, HSP90, HSF-1 and HSF-2 in thermally manipulated broilers during embryogenesis

Author:
Al-Zghoul, Mohamed Borhan; El-Bahr, Sabry Mohamed
Source:
BMC veterinary research 2019 v.15 no.1 pp. 83
ISSN:
1746-6148
Subject:
broiler chickens,   etc   ; chicks; eggs; embryogenesis; gene expression; heat shock proteins; heat stress; heat tolerance; messenger RNA; muscle tissues;     Show all 10 Subjects
Abstract:
... BACKGROUND: Limited data are available about the kinetics of mRNA expressions of Heat shock proteins (HSPs) and heat shock factors (HSFs) in the thermally manipulated (TM) broiler chicks during acute heat stress. Therefore, this study aimed to investigate effects of thermal manipulation (TM) of broiler chicken during embryonic days (ED) 12–18 on the basal and dynamics mRNA expression of heat shock ...
DOI:
10.1186/s12917-019-1827-7

8. Prevalence of Salmonella in broiler chickens in Kagoshima, Japan in 2009 to 2012 and the relationship between serovars changing and antimicrobial resistance

Author:
Duc, Vu Minh; Nakamoto, Yuko; Fujiwara, Ayaka; Toyofuku, Hajime; Obi, Takeshi; Chuma, Takehisa
Source:
BMC veterinary research 2019 v.15 no.1 pp. 108
ISSN:
1746-6148
Subject:
broiler chickens,   etc   ; Salmonella; ampicillin; antibiotic resistance; cefotaxime; chloramphenicol; farms; flocks; multiple drug resistance; oxytetracycline; serotypes; streptomycin; sulfamethoxazole; surveys; Japan;     Show all 15 Subjects
Abstract:
... BACKGROUND: This study aimed to examine the prevalence, serovars, and antimicrobial resistance of Salmonella isolates from broiler chickens in Kagoshima, Japan. A total of 192 flocks and 3071 samples were collected from broiler chickens at local farms in Kagoshima, Japan from 2009 to 2012. RESULT: Among the tested farms, 49.0% of flocks were positive for Salmonella, and 243 isolates were obtained ...
DOI:
10.1186/s12917-019-1836-6

9. Development and validation of an ultra-high performance liquid chromatography–tandem mass spectrometry method for the simultaneous determination of iohexol, p-aminohippuric acid and creatinine in porcine and broiler chicken plasma

Author:
Dhondt, Laura; Croubels, Siska; De Cock, Pieter; De Paepe, Peter; De Baere, Siegrid; Devreese, Mathias
Source:
Journal of chromatography 2019 v.1117 pp. 77-85
ISSN:
1570-0232
Subject:
broiler chickens,   etc   ; cost effectiveness; creatinine; formic acid; glomerular filtration rate; liquid chromatography; methanol; phospholipids; rapid methods; swine; tandem mass spectrometry;     Show all 11 Subjects
Abstract:
... In order to study the renal function, in terms of glomerular filtration and effective renal plasma flow, in broiler chickens and pigs, an ultra-high performance liquid chromatography–tandem mass spectrometry method for the simultaneous determination of iohexol, p-aminohippuric acid (PAH) and exogenously administered creatinine in plasma was developed and validated. Sample preparation consisted of ...
DOI:
10.1016/j.jchromb.2019.04.017

10. Anticoccidial and antioxidant effects of plants derived polyphenol in broilers exposed to induced coccidiosis

Author:
Alhotan, Rashed A.; Abudabos, Alaeldein
Source:
Environmental science and pollution research international 2019 v.26 no.14 pp. 14194-14199
ISSN:
0944-1344
Subject:
broiler chickens,   etc   ; albumins; antioxidant activity; blood chemistry; body weight changes; cecum; coccidiosis; coccidiostats; drugs; duodenum; glucose; histology; jejunum; polyphenols; villi;     Show all 15 Subjects
Abstract:
... The comparative anticoccidial effects of herbal products with a standard synthetic anticoccidial drug on the production performance, intestinal histology, and some blood biochemical parameters in broilers exposed to experimental coccidiosis was investigated. One-day-old broiler chicks (n = 336) were randomly distributed into six groups. One group served as a control, the second was treated with th ...
DOI:
10.1007/s11356-019-04615-2

11. Effects of environmental enrichment on activity and lameness in commercial broiler production

Author:
Vasdal, Guro; Vas, Judit; Newberry, Ruth C.; Moe, Randi Oppermann
Source:
Journal of applied animal welfare science 2019 v.22 no.2 pp. 197-205
ISSN:
1532-7604
Subject:
broiler chickens,   etc   ; aggression; alfalfa hay; animal welfare; bales; dust bathing; environmental enrichment; flocks; gait; lameness; peat; pecking; poultry production;     Show all 13 Subjects
Abstract:
... The aim of this pilot study was to investigate the effects of commercially applied environmental enrichments on behavior and lameness in broilers. Two consecutive flocks of broilers were observed at 16 days and 30 days of age to investigate differences between enriched (peat, bales of lucerne hay, and elevated platforms) and control birds with regards to behavioral activities and lameness. More ru ...
DOI:
10.1080/10888705.2018.1456339

12. Broiler weight forecasting using dynamic neural network models with input variable selection

Author:
Johansen, Simon V.; Bendtsen, Jan D.; R.-Jensen, Martin; Mogensen, Jesper
Source:
Computers and electronics in agriculture 2019 v.159 pp. 97-109
ISSN:
0168-1699
Subject:
broiler chickens,   etc   ; case studies; environmental factors; farms; meat production; models; monitoring; planning; poultry housing; poultry meat; poultry production; temperature;     Show all 12 Subjects
Abstract:
... The global demand for poultry meat is predicted to increase by 18% between 2015–17 and 2027, which motivates the need for better tools for production monitoring, planning and optimization. This paper presents the first results on broiler (chicken for meat production) weight forecasting intended for production planning and monitoring using environmental broiler house conditions – such as heating, v ...
DOI:
10.1016/j.compag.2018.12.014

13. Distribution of TLR4 and MHC class II molecules of the spleen in broiler chicks treated with and without LPS in the first 2 weeks of the post-hatch period

Author:
Aka, E.; Eren, U.
Source:
British poultry science 2019 v.60 no.2 pp. 130-138
ISSN:
1466-1799
Subject:
broiler chickens,   etc   ; Toll-like receptor 4; adaptive immunity; antigens; chicks; decapitation; enzymes; lipopolysaccharides; major histocompatibility complex; pulp; spleen;     Show all 11 Subjects
Abstract:
... 1. The purpose of this study was to investigate the distribution of Toll-like receptor-4 (TLR4) and major histocompatibility complex (MHC) class II molecules of the spleen in chicks treated with lipopolysaccharide (LPS) during the first 2 weeks of their life. 2. A total of 225 Ross-308 commercial broiler chicks were used. Within the 2-week experimental period, chicks were divided into 5 main group ...
DOI:
10.1080/00071668.2018.1564238

14. Mortality of Broiler Chickens During Summer Fattening Periods Affected by Microclimatic Conditions

Author:
Šranková, Veronika; Lendelová, Jana; Mihina, Štefan; Žitňák, Miroslav; Nawalany, Gregorz
Source:
Acta technologica agriculturae 2019 v.22 no.1 pp. 22-30
ISSN:
1338-5267
Subject:
broiler chickens,   etc   ; cooling; heat pumps; microclimate; mortality; poultry feeding; poultry finishing; relative humidity; summer; surface temperature; Slovakia;     Show all 11 Subjects
Abstract:
... Mortality of chickens during two summer fattening periods L1 and L2 in commonly used halls for chicken fattening in Slovakia have been evaluated in this paper. Effect of microclimatic conditions in housing area on recorded mortality has been analysed. Mortality was assessed in six halls, microclimate parameters and surface temperatures were continually measured only in one of the middle halls. It ...
DOI:
10.2478/ata-2019-0005

15. Anticoccidial activity of novel triazine compounds in broiler chickens

Author:
Zhang, Min; Li, Xueyan; Zhao, Qiping; She, Rufeng; Xia, Suhan; Zhang, Keyu; Zhang, Lifang; Wang, Xiaoyang; Wang, Mi; Liu, Yingchun; Wang, Chunmei; Zhang, Jie; Xue, Feiqun; Fei, Chenzhong
Source:
Veterinary parasitology 2019 v.267 pp. 4-8
ISSN:
0304-4017
Subject:
broiler chickens,   etc   ; Eimeria acervulina; Eimeria maxima; Eimeria necatrix; Eimeria tenella; cross resistance; diclazuril; metabolites; oocysts; phenol; toltrazuril; China;     Show all 12 Subjects
Abstract:
... The objective of present studies was to evaluate and compare the anticoccidial activity of triazine compounds in broiler chickens infected with E. tenella, E. necatrix, E. acervulina, E. maxima, and two field mixed Eimeria species. The anticoccidial efficacy was evaluated using the anticoccidial index (ACI). The results showed that Aminomizuril (AZL) and Ethanamizuril (EZL) were active metabolites ...
DOI:
10.1016/j.vetpar.2019.01.006

16. Detection of sick broilers by digital image processing and deep learning

Author:
Zhuang, Xiaolin; Zhang, Tiemin
Source:
Biosystems engineering 2019 v.179 pp. 106-116
ISSN:
1537-5110
Subject:
broiler chickens,   etc   ; data collection; digital images; flocks; health status; human health; image analysis; models; monitoring; poultry diseases; rearing;     Show all 11 Subjects
Abstract:
... Frequently, the occurrence of poultry diseases can seriously threaten human health. Even though the quantity and density of poultry rearing are high, monitoring of poultry diseases is still based on manual observation. In this paper, a model structure was proposed to identify sick broilers within a flock by using digital image processing and deep learning. For this aim, a broiler dataset (B1) cont ...
DOI:
10.1016/j.biosystemseng.2019.01.003

17. Non-invasive broiler chick embryo sexing based on opacity value of incubated eggs

Author:
Alin, Khaliduzzaman; Fujitani, Shinichi; Kashimori, Ayuko; Suzuki, Tetsuhito; Ogawa, Yuichi; Kondo, Naoshi
Source:
Computers and electronics in agriculture 2019 v.158 pp. 30-35
ISSN:
0168-1699
Subject:
broiler chickens,   etc   ; algorithms; chick embryos; chicks; color; eggs; electric potential; females; hatching; males; models; motivation; opacity; sex determination analysis;     Show all 14 Subjects
Abstract:
... In boiler production there is a gender biased preference for males, while for layer strains it is females. Thus, there is need for non-intrusive, early sex discrimination of chick embryos that is currently not being met. Hence, the motivation for the current study to investigate sex based growth difference in terms of opacity in order to classify the sex of incubated eggs. As a model, eggs from a ...
DOI:
10.1016/j.compag.2019.01.029

18. Expression levels of HSP70 and CPT-1 in three local breeds of chickens reared under normal or heat stress conditions after the introduction of the naked neck gene

Author:
Galal, A.; Radwan, Lamiaa M.; Rezik, Habiba H.; Ayoub, H.
Source:
Journal of thermal biology 2019 v.80 pp. 113-118
ISSN:
0306-4565
Subject:
broiler chickens,   etc   ; body weight; breeds; chicks; gene expression; genes; genotype; heat stress; heat tolerance; males; plumage; rearing;     Show all 12 Subjects
Abstract:
... The naked neck gene was introduced by crossbreeding into Egyptian breeds to improve body weight. Expression levels of HSP70 and CPT-1 were used to assess the heat tolerance of three Egyptian local breeds (Fayoumi, Dandarawi and Sinai) with and without the naked neck gene and under normal and heat stress conditions.There were two genotypes from each breed that had the same genetic origin (the naked ...
DOI:
10.1016/j.jtherbio.2018.12.018

19. Production performance, immune response and carcass traits of broiler chickens fed diet incorporated with Kappaphycus alvarezii

Author:
Qadri, S. S. N.; Biswas, A.; Mandal, A. B.; Kumawat, M.; Saxena, R.; Nasir, A. M.
Source:
Journal of applied phycology 2019 v.31 no.1 pp. 753-760
ISSN:
0921-8971
Subject:
broiler chickens,   etc   ; Kappaphycus alvarezii; body weight changes; carcass characteristics; cell-mediated immunity; chicks; experimental diets; feed conversion; feed intake; hemagglutination;     Show all 10 Subjects
Abstract:
... This study evaluates the production performance, immune responses and carcass traits in broiler chickens (0 to 42 days) fed diet with incorporated Kappaphycus alvarezii (AF-KWP). Day-old chicks (280) were randomly distributed into 35 groups with 8 chicks in each group (7 dietary treatments × 5 replicates). Seven experimental diets were formulated by adding 0 (control—T₁), 0.25 AF-KWP (T₂), 0.50 AF ...
DOI:
10.1007/s10811-018-1498-y

20. Histomorphometric analysis of the small intestine of broiler chick embryos injected in ovo with methionine

Author:
Nazem, Mohammad Naser; Sajjadian, Sayed Mohsen; Kheirandish, Reza; Mohammadrezaei, Hamideh
Source:
Animal production science 2019 v.59 no.1 pp. 133-139
ISSN:
1836-0939
Subject:
broiler chickens,   etc   ; body weight; chick embryos; duodenum; egg weight; eggs; eosin; histology; ileum; jejunum; methionine; morphometry; villi; yolk sac;     Show all 14 Subjects
Abstract:
... The present study evaluated the histomorphometric effect on the small intestine of the chicken embryo after in ovo methionine injection. On Day 4 of incubation, 50 fertile eggs were allocated into one of the following five groups: control (no treatment) and four treatment groups that received either 20, 30, 40 or 50 mg methionine via their yolk sac. All eggs were incubated until Day 19, at which p ...
DOI:
10.1071/AN17269