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1. Predicting feedlot cattle performance from intake of dry matter and NEg early in the feeding period

Author:
Silvestre, A.M.; Cruz, G.D.; Owens, F.N.; Pereira, M.C.S.; Hicks, R.B.; Millen, D.D.
Source:
Livestock science 2019 v.223 pp. 108-115
ISSN:
1871-1413
Subject:
feedlots,   etc   ; average daily gain; body weight; databases; death; diet; energy; finishing; heifers; prediction; steers;     Show all 11 Subjects
Abstract:
... The objectives of this study were: 1) To identify which specific week or weeks at the beginning of feeding period was most closely correlated with intake of net energy for gain (NEg) and dry matter (DM) for the full feedlot period of 140–180 d, and 2) to determine how various performance measurements were correlated with intake during this selected time frame. The database was compiled from one co ...
DOI:
10.1016/j.livsci.2019.03.007

2. Persistence of elevated concentrations of PM, affiliated pharmaceuticals, and tetracycline resistance genes downwind of feedyards

Author:
Wooten, Kimberly J.; Mayer, Gregory D.; Smith, Philip N.
Source:
Environmental pollution 2019 v.247 pp. 467-473
ISSN:
0269-7491
Subject:
feedlots,   etc   ; air; antibiotics; beef cattle; beta-adrenergic agonists; monensin; particulates; ractopamine; resistance genes; steroids;     Show all 10 Subjects
Abstract:
... Beef cattle feedyards have been identified as sources of large amounts of particulate matter (PM) which may transport affiliated chemicals including steroids, beta agonists, and antibiotics from feedyards into the environment. This study is the first to examine persistence of PM-affiliated pharmaceuticals downwind of feedyards using multiple downwind samples collected at increasing distances from ...
DOI:
10.1016/j.envpol.2018.12.047

3. Economic viability of finishing lambs in the feedlot using bovine cheese whey as a dietary ingredient

Author:
Pinheiro Rogério, Marcos Cláudio; Martins, Espedito Cezário; Shiotsuki, Luciana; Fernandes Franco Pompeu, Roberto Cláudio; Muir, James Pierre; Araújo, Alexandre Ribeiro; de Sousa Oliveira, Delano; Lima Magalhães, José Lochaider; Campos, Warley Éfrem; Facó, Olivardo; Azevedo Alves, Arnaud
Source:
Small ruminant research 2019 v.170 pp. 131-136
ISSN:
0921-4488
Subject:
feedlots,   etc   ; cheese whey; diet; economic sustainability; ingredients; lamb finishing; lambs; prices; wages and remuneration;     Show all 9 Subjects
Abstract:
... The aim of this study was to evaluate the economic viability of finishing Morada Nova in two feedlot systems: with and without inclusion of bovine cheese whey in the diet. Extrapolation was performed to a module of 240 lambs per year based on a three-cycle production system (each cycle with 100 days). The use of bovine cheese whey resulted in better economic viability. Reduction of labor costs and ...
DOI:
10.1016/j.smallrumres.2018.11.018

4. A preliminary evaluation of veterinary antibiotics, estrogens, in vitro estrogenic activity and microbial communities in airborne particulate matter collected near dairy production facilities

Author:
Smith, Philip N.; McEachran, Andrew D.; Wooten, Kimberly J.; Blackwell, Brett R.
Source:
Aerobiologia 2019 v.35 no.2 pp. 315-326
ISSN:
0393-5965
Subject:
feedlots,   etc   ; antibiotics; beef cattle; community structure; dairies; estrogenic properties; estrogens; microbial communities; milk production; particulates; steroids; veterinary drugs;     Show all 12 Subjects
Abstract:
... Particulate matter (PM) emitted from beef cattle feedyards transports manure-affiliated compounds including antibiotics and steroids from feedyards into the surrounding environment. Similarly, commercial dairy operations have the potential to release PM, comprised largely of aerosolized manure, into the surrounding environment along with associated veterinary antibiotics and steroids. The goal of ...
DOI:
10.1007/s10453-019-09559-1

5. Qualitative Behavioural Assessment of Bos indicus cattle after surgical castration

Author:
Vindevoghel, Thinza V.; Fleming, Patricia A.; Hyndman, Timothy H.; Musk, Gabrielle C.; Laurence, Michael; Collins, Teresa
Source:
Applied animal behaviour science 2019 v.211 pp. 95-102
ISSN:
0168-1591
Subject:
feedlots,   etc   ; Brahman; analgesia; analgesics; animal behavior; bulls; calves; castration; lidocaine; meloxicam; nonverbal communication; pain; pastures; zebu; Australia;     Show all 15 Subjects
Abstract:
... There are various methods to perform castration of cattle, but surgical castration is the most common. Although it is well documented that surgical procedures inflict pain, analgesic use is usually omitted for surgical castration of production animals in Australia. This study compares the behavioural responses of castrated cattle (C) with non-castrated (NC) controls, and C with those castrated and ...
DOI:
10.1016/j.applanim.2018.11.004

6. Type C botulism outbreak in feedlot cattle fed contaminated corn silage

Author:
Guizelini, Carolina C.; Lemos, Ricardo A.A.; de Paula, Juliana L.P.; Pupin, Rayane C.; Gomes, Danilo C.; Barros, Claudio S.L.; Neves, Danielle A.; Alcântara, Lilian O.B.; Silva, Rodrigo O.S.; Lobato, Francisco C.F.; Martins, Tessie B.
Source:
Anaerobe 2019 v.55 pp. 103-106
ISSN:
1075-9964
Subject:
feedlots,   etc   ; Clostridium botulinum; antitoxins; bioassays; botulinum toxin; botulism; case studies; corn silage; mice; muscles; paralysis; steers; Brazil;     Show all 13 Subjects
Abstract:
... A large outbreak of botulism in feedlot steers fed corn silage contaminated with Clostridium botulinum neurotoxin type C (BoNT/C) is reported occurring in Midwestern Brazil in August 2017. The onset of the outbreak occurred 15 days after 1700 steers started to be fed the contaminated corn silage. Affected steers were alert and afebrile with varying degrees of flaccid paralysis in various muscle gr ...
DOI:
10.1016/j.anaerobe.2018.11.003

7. Evaluation of three classification models to predict risk class of cattle cohorts developing bovine respiratory disease within the first 14 days on feed using on-arrival and/or pre-arrival information

Author:
Amrine, David E.; McLellan, Jiena G.; White, Brad J.; Larson, Robert L.; Renter, David G.; Sanderson, Mike
Source:
Computers and electronics in agriculture 2019 v.156 pp. 439-446
ISSN:
0168-1699
Subject:
feedlots,   etc   ; algorithms; barns; bovine respiratory disease; cattle; confidence interval; data collection; drug therapy; models; morbidity; mortality; risk; weather;     Show all 13 Subjects
Abstract:
... Bovine respiratory disease (BRD) remains the leading cause of morbidity and mortality in feedlot cattle. At feedlot arrival, classification of cattle groups into high- or low-risk based on their expected level of BRD is common, highly variable, and based on many subjective criteria. An accurate objective classification methodology would provide a tool to more efficiently allocate resources and pro ...
DOI:
10.1016/j.compag.2018.11.035

8. Simultaneous measurements of ammonia volatilisation and deposition at a beef feedlot

Author:
Redding, M. R.; Lewis, R.; Shorten, P. R.
Source:
Animal production science 2019 v.59 no.1 pp. 160-168
ISSN:
1836-0939
Subject:
feedlots,   etc   ; air; ammonia; ammonium nitrogen; beef cattle; greenhouse gas emissions; models; nitrogen; nitrous oxide; spectroscopy; statistics; temperature; traps; volatilization;     Show all 14 Subjects
Abstract:
... The nitrogen (N) excreted at intensive livestock operations is vulnerable to volatilisation, and, subsequently, may form a source of indirect nitrous oxide (N2O) emissions. The present study simultaneously investigated volatilisation and deposition of N at a beef feedlot, semi-continuously over a 129-day period. These data were examined relative to pen manure parameters, management statistics and ...
DOI:
10.1071/AN17310

9. Intracranial, extraneural ectopic lymph node in a bovine (Bos taurus)

Author:
Clancy, Chad S.; Van Wettere, Arnaud J.; Hullinger, Gordon A.
Source:
Anatomia, histologia, embryologia 2018 v.47 no.4 pp. 385-388
ISSN:
0340-2096
Subject:
feedlots,   etc   ; anorexia; brain; heifers; histology; histopathology; lymph nodes; meninges; necropsy;     Show all 9 Subjects
Abstract:
... The brain from a field necropsied 8‐month‐old feedlot heifer presenting with an acute history of depression, lethargy, dyspnoea and anorexia was evaluated grossly and by histopathology. The meninges overlying the left cerebral hemisphere contained a 12 × 26 × 32 mm, dark red, soft, ovoid mass. Histologic examination of this tissue revealed a well‐organized lymph node with normal architecture. Orga ...
DOI:
10.1111/ahe.12364

10. Integrated Deep Soil N and Groundwater Isotope Investigation of N Sources Captured by Municipal Wells

Author:
Spalding, Roy F.; Hirsh, Aaron J.; Exner, Mary E.; Stange, Marty; Aravena, Ramon
Source:
Ground water monitoring & remediation 2019 v.39 no.2 pp. 22-31
ISSN:
1069-3629
Subject:
feedlots,   etc   ; ammonium fertilizers; atrazine; deethylatrazine; denitrification; drinking water; fine-textured soils; groundwater; growing season; irrigated farming; isotopes; leachates; leaching; nitrates; sprinkler irrigation; water quality; weather; wells; Nebraska;     Show all 19 Subjects
Abstract:
... Identification of major nitrate sources that adversely impact groundwater quality in municipal well capture zones in areas of emerging nitrate contamination is essential to minimize leaching and prevent exceedance of the nitrate drinking water standard. Vertical profiles of nitrate leachate in deep soils provide an estimate of the amount of nitrate in transit beneath irrigated, row‐cropped fields; ...
DOI:
10.1111/gwmr.12311

11. The effect of finishing period and dietary energy content on the carcass characteristics of Boer goats

Author:
Brand, T.S.; Van Der Merwe, D.A.; Swart, E.; Hoffman, L.C.
Source:
Small ruminant research 2019 v.174 pp. 110-117
ISSN:
0921-4488
Subject:
feedlots,   etc   ; Boer (goat breed); abdominal cavity; ad libitum feeding; animal tissues; body weight; carcass quality; carcass yield; diet; energy content; finishing; goat feeding; goats;     Show all 13 Subjects
Abstract:
... This study compared the effects of different dietary energy contents (11.3, 12.0 and 12.7 MJ ME/ kg feed) fed ad libitum in a feedlot on the carcass quality characteristics (carcass yield, commercial yield, 3-rib cut) of goats introduced to feedlot at 22.2 ± 3.5 kg (18 weeks of age), and slaughtered at five week intervals. The energy content of the finisher diets had no effect (P > 0.05) on any of ...
DOI:
10.1016/j.smallrumres.2019.03.012

12. Thermal comfort and performance of feedlot lambs finished in two climatic conditions

Author:
Polli, Volmir Antonio; Vaz, Ricardo Zambarda; Carvalho, Sérgio; Costa, Pablo Tavares; Mello, Renius de Oliveira; Restle, João; Nigeliskii, André Fogaça; Silveira, Isabella Dias Barbosa; Pissinin, Dejanir
Source:
Small ruminant research 2019 v.174 pp. 163-169
ISSN:
0921-4488
Subject:
feedlots,   etc   ; Texel; body weight; climatic factors; cold; cold season; corn silage; diet; dry matter intake; eyes; heat; heat stress; lambs; respiratory rate; roughage; rumination; temperature;     Show all 17 Subjects
Abstract:
... The aim of this study was to evaluate the thermal comfort, performance, and behavior of feedlot lambs finished in two climatic conditions. Twenty castrated Texel lambs at an average age of 75 days were used in the experiment. Diets consisted of corn silage as the roughage component plus concentrate, with roughage-to-concentrate ratios of 50:50 and 50.5:49.5 for the higher and lower heat conditions ...
DOI:
10.1016/j.smallrumres.2019.03.002

13. Evaluation of genotype on fatty acid profile and sensory of meat of indigenous Pantaneiro sheep and Texel or Santa Inês crossbred finished on feedlot

Author:
Vargas Junior, Fernando Miranda; Martins, Charles Ferreira; Feijó, Gelson Luís Dias; Teixeira, Alfredo; Leonardo, Ariádne Patricia; Ricardo, Hélio de Almeida; Fernandes, Alexandre Rodrigo Mendes; Reis, Fernando Alvarenga
Source:
Small ruminant research 2019 v.173 pp. 17-22
ISSN:
0921-4488
Subject:
feedlots,   etc   ; Texel; fatty acid composition; females; genetic improvement; genetic variation; genotype; lambs; longissimus muscle; males; meat; meat production; polyunsaturated fatty acids; sensory properties; slaughter weight; weaning weight;     Show all 16 Subjects
Abstract:
... The genetic diversity of the local breeds can contribute to the maintenance of traits that are economically important to the genetic improvement of sheep. The objective of this study was to evaluate the effect of genotype and sex on the fatty acid profile, shear force, and sensory traits of the longissimus lumborum muscle of lambs. Ninety-six lambs with a weaning weight of 15.21 ± 1.25 kg were fin ...
DOI:
10.1016/j.smallrumres.2019.02.003

14. Behavioural and productive response to experimental infection with stage 3 larvae of Haemonchus contortus in feedlot bull-calves

Author:
Flores-Pérez, Iván; Hallal-Calleros, Claudia; Cervantes-Pacheco, Billy Josué; Alba-Hurtado, Fernando; Orihuela, Agustín; Castro-del-Campo, Noemi; Acevedo-Ramírez, Perla; Ortiz-López, Briseida; Jimenez-Leyva, Diego; Barajas-Cruz, Rubén
Source:
Experimental parasitology 2019 v.197 pp. 1-8
ISSN:
0014-4894
Subject:
feedlots,   etc   ; Haemonchus contortus; abomasum; animal performance; bulls; calves; defecation; deworming; diet; eggs; energy; feces; feed conversion; financial economics; grooming (animal behavior); hematocrit; hemoglobin; larvae; parasites; urination;     Show all 20 Subjects
Abstract:
... Haemonchus contortus is a nematode parasite that establishes in the abomasum of ruminants, it has a cosmopolitan distribution and is a worldwide health problem for livestock. As a first line of defence against parasites, behaviour can help to prevent or fight infection, and may even serve as a method of early presumptive diagnosis. Parasites can affect performance of cattle and cause significant e ...
DOI:
10.1016/j.exppara.2018.12.005

15. Meat quality of Santa Inês lamb chilled-then-frozen storage up to 12 months

Author:
Pinheiro, Rafael S.B.; Francisco, Caroline L.; Lino, Diego M.; Borba, Hirasilva
Source:
Meat science 2019 v.148 pp. 72-78
ISSN:
0309-1740
Subject:
feedlots,   etc   ; color; cooking quality; frozen storage; lamb meat; lambs; lipid peroxidation; longissimus muscle; males; meat quality; pH; shelf life; slaughter; storage time; water holding capacity;     Show all 15 Subjects
Abstract:
... Frozen lamb meat storage is widely used to extend its shelf life. However, it is scarcely known whether this practice changes the quality of lamb meat. The aim of this study was to evaluate the meat quality at five frozen storage periods (0, 3, 6, 9, and 12 months after slaughter) of 30 Santa Inês male lambs (hair sheep) finished in feedlot. Samples of M. longissimus lumborum (LL) were used for th ...
DOI:
10.1016/j.meatsci.2018.09.017

16. Pharmacokinetic profile and anthelmintic efficacy of moxidectin administered by different doses and routes to feedlot calves

Author:
Fazzio, Luis; Moreno, Laura; Galvan, Walter; Canton, Candela; Alvarez, Luis; Streitenberger, Nicolás; Sánchez, Ricardo; Lanusse, Carlos; Sanabria, Rodrigo
Source:
Veterinary parasitology 2019 v.266 pp. 73-79
ISSN:
0304-4017
Subject:
feedlots,   etc   ; Cooperia; blood sampling; calves; computer software; finishing; gastrointestinal nematodes; grazing; high performance liquid chromatography; ivermectin; moxidectin; pharmacokinetics; therapeutics; weight gain;     Show all 14 Subjects
Abstract:
... We evaluated the comparative plasma disposition kinetics and efficacy of moxidectin (MXD), administered by the intraruminal (IR) or subcutaneous (SC) route at two different dosage levels (0.2 and 1 mg/kg) in feedlot calves. Additionally, the efficacy was compared to an ivermectin (IVM, SC administration) treated group. This study was divided into two separate studies, the “Pharmacokinetic (PK) stu ...
DOI:
10.1016/j.vetpar.2018.12.016

17. Tibetan sheep require less energy intake than small-tailed Han sheep for N balance when offered a low protein diet

Author:
Zhou, J.W.; Guo, Y.M.; Kang, J.P.; Degen, A.A.; Titgemeyer, E.C.; Jing, X.P.; Wang, W.J.; Shang, Z.H.; Li, Z.P.; Yang, G.; Long, R.J.
Source:
Animal feed science and technology 2019 v.248 pp. 85-94
ISSN:
0377-8401
Subject:
feedlots,   etc   ; absorption; crude protein; energy intake; excretion; gastrointestinal system; grazing; low calorie diet; low protein diet; metabolizable energy; pastures; sheep; summer; urea; China;     Show all 15 Subjects
Abstract:
... Tibetan sheep are indigenous to the Qinghai-Tibetan Plateau and graze natural pasture all year round; small-tailed Han sheep were introduced to the plateau, are raised mainly in feedlots and graze natural pasture only in summer. A low energy intake could have a negative effect on N utilization and N balance in ruminants. We hypothesized that Tibetan sheep require less energy for N balance and util ...
DOI:
10.1016/j.anifeedsci.2019.01.006

18. Organizational and economic modeling of an anaerobic digestion system to treat cattle manure and produce electrical energy in Argentina's feedlot sector

Author:
Castelao Caruana, María Eugenia
Source:
Journal of cleaner production 2019 v.208 pp. 1613-1621
ISSN:
0959-6526
Subject:
feedlots,   etc   ; anaerobic digestion; animal manure management; bioenergy; cattle manure; cost effectiveness; economic sustainability; electric power; energy; farms; feedstocks; infrastructure; livestock; power generation; supply chain; transportation; Argentina;     Show all 17 Subjects
Abstract:
... This study identifies the main factors that affect the economic and organizational viability of a representative power generation project that applies an anaerobic digestion technology and uses cattle manure from feedlots as feedstock, in Argentina. Considering users' needs and their organizational process, as well as the potential impact of this technology upon their performance, the results show ...
DOI:
10.1016/j.jclepro.2018.10.133

19. Stability of vacuum-packed meat from finishing steers fed different inclusion levels of brewer's spent grain

Author:
Stefanello, Flávia Santi; Fruet, Ana Paula Burin; Trombetta, Francielle; da Fonseca, Patrícia Alves Franco; dos Santos da Silva, Mariana; Stefanello, Simone; Nörnberg, José Laerte
Source:
Meat science 2019 v.147 pp. 155-161
ISSN:
0309-1740
Subject:
feedlots,   etc   ; adverse effects; beef; beef cattle; cold storage; color; corn silage; diet; finishing; forage; lipids; longissimus muscle; oxidation; shelf life; spent grains; steers; storage time; vacuum packaging;     Show all 18 Subjects
Abstract:
... Brewer's spent grain (BSG) as a partial substitute for corn silage (CS) was evaluated in finishing feedlot steers on the lipid, protein, color, and microbiological stability of vacuum-packed meat for 75 days under refrigerated storage. Twenty steers were distributed in four treatments in a completely randomized design with five replicates each: 50% concentrate + 50% CS; + 35% CS + 15% BSG; + 25% C ...
DOI:
10.1016/j.meatsci.2018.09.004

20. Effects of concentrates rich in by-products on growth performance, carcass characteristics and meat quality traits of light lambs

Author:
Ramírez, C. Avilés; Blanco, F. Peña; Ibáñez, A. Horcada; Sánchez, N. Núñez; Domenech, F. Requena; Medina, P. Guzmán; Martínez Marín, A. L.
Source:
Animal production science 2019 v.59 no.3 pp. 593-599
ISSN:
1836-0939
Subject:
feedlots,   etc   ; Camelina; byproducts; camelina meal; carcass characteristics; crude protein; energy; feed conversion; grains; growth performance; ingredients; lambs; males; meat quality; oxidative stability; soybean meal;     Show all 16 Subjects
Abstract:
... The effects of feeding concentrates with alternative ingredients to cereal and soybean meal on growth performance, carcass characteristics and meat quality traits of feedlot lambs were studied. A total of 105 non-castrated male lambs were randomly assigned to one of three treatments (5 replicates per treatment): Control (CON, similar to commercial concentrates), Camelina (CAM, where camelina meal ...
DOI:
10.1071/AN17798