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1. Effects of backgrounding-phase rate of gain on performance and carcass characteristics of feedlot steers

Author:
E.J. Blom; W.W. Gentry; R.H. Pritchard; K.E. Hales
Source:
Applied animal science 2022 v.38 no.3 pp. 279-284
ISSN:
2590-2865
Subject:
feedlots,   etc   ; carcass quality; carcass weight; diet; energy; marbling;     Show all 6 Subjects
Abstract:
... The objective was to evaluate effects of varying backgrounding-phase growth rates (BGR) on subsequent finishing-phase performance and carcass characteristics of feedlot cattle. Steers (n = 144) were randomly assigned to 1 of 3 BGR treatments from study initiation to 409 kg of BW. Treatments consisted of 0.91 kg/d (0.91ADG), 1.13 kg/d (1.13ADG), or 1.36 kg/d (1.36ADG). Net energy equations were use ...
DOI:
10.15232/aas.2022-02274

2. Increasing mud levels in a feedlot influences beef cattle behaviours but not preference for feedlot or pasture environments

Author:
Emily J. Dickson; Dana L.M. Campbell; Jessica E. Monk; Jim M. Lea; Ian G. Colditz; Caroline Lee
Source:
Applied animal behaviour science 2022 v.254 pp. 105718
ISSN:
0168-1591
Subject:
feedlots,   etc   ; Angus; animal behavior; beef cattle; hooves; pastures;     Show all 6 Subjects
Abstract:
... Public scrutiny surrounds the intensive feedlot finishing of beef cattle, likely due to the assumption that cattle cannot perform their full repertoire of natural behaviours. However, it is not well-known how certain aspects of the environment influence both cattle perception of a feedlot environment and the behaviours they perform within it, particularly with increasing levels of mud. The objecti ...
DOI:
10.1016/j.applanim.2022.105718

3. Consequences of long-distance transport on the behavior and health of young-bulls that may affect their fitness to adapt to feedlots

Author:
M. Valadez-Noriega; L.X. Estévez-Moreno; F. Galindo; F. Pérez-Martínez; M. Villarroel; G.C. Mirandade la Lama
Source:
Livestock science 2022 pp. 105083
ISSN:
1871-1413
Subject:
feedlots,   etc   ; agroecosystems; animal welfare; bovine respiratory disease; livestock; livestock transport;     Show all 6 Subjects
Abstract:
... Some studies have shown that long distance journeys and the type of trailer compartment have consequences on farm animal welfare. However, there is little evidence to indicate how these consequences affect the fitness of young bulls to adapt to a novel and challenging environment such as an intensive industrial feedlot. Therefore, the objective of our study was to evaluate the consequences of long ...
DOI:
10.1016/j.livsci.2022.105083

4. Nonpathogenic Escherichia coli strains as a surrogate for Shiga toxin–producing E. coli: Fecal shedding dynamics and pen environmental contamination in weaned calves and feedlot steers

Author:
H.L. Seger; M.W. Sanderson; T.G. Nagaraja
Source:
Applied animal science 2022 v.38 no.4 pp. 305-316
ISSN:
2590-2865
Subject:
feedlots,   etc   ; Holstein; Shiga toxin-producing Escherichia coli; feces; mouth; pollution; summer;     Show all 7 Subjects
Abstract:
... The purpose of this study was to use nonpathogenic Escherichia coli as a surrogate to assess the transmission dynamics of Shiga toxin–producing E. coli in cattle. Two studies were performed. For the first study, 3 nonpathogenic E. coli strains were orally inoculated into 12 weaned Holsteins calves. Calves were sampled daily the first week and 3 times a week for the following 4 wk. The nonpathogeni ...
DOI:
10.15232/aas.2021-02260

5. Risk factors for mid- and late-feeding-stage bovine respiratory morbidity and mortality based on individual animal treatments of beef feedlot cattle

Author:
Kristen J. Smith; David E. Amrine; Robert L. Larson; Miles E. Theurer; Josh I. Szaz; Tony Bryant; Brad J. White
Source:
Applied animal science 2022 v.38 no.4 pp. 360-372
ISSN:
2590-2865
Subject:
feedlots,   etc   ; beef; bovine respiratory disease; death; demographic statistics; morbidity; mortality; regression analysis;     Show all 8 Subjects
Abstract:
... Previously published research on bovine respiratory disease (BRD) has emphasized the initial portion of the feeding phase; yet, little work has investigated risk factors associated with BRD incidence later in the feeding period. Our study objective was to identify risk factors associated with BRD morbidity and mortality timing within the feeding phase. Individual animal records for first BRD treat ...
DOI:
10.15232/aas.2022-02311

6. Kinome Analysis of Cattle Peripheral Lymph Nodes to Elucidate Differential Response to Salmonella spp.

Author:
Ryan J. Arsenault; Tyson R. Brown; Thomas S. Edrington; David J. Nisbet
Source:
Microorganisms 2022 v.10 no.1 pp. -
ISSN:
2076-2607
Subject:
feedlots,   etc   ; Salmonella; ground beef; immune response; innate immunity; lymph; peptides; phosphorylation; summer; winter;     Show all 10 Subjects
Abstract:
... Salmonella spp., contained within the peripheral lymph nodes (PLNs) of cattle, represents a significant source of contamination of ground beef. Herein is the first report where species-specific kinome peptide arrays designed for bovine biology were used to further the understanding of Salmonella spp. within these PLNs. For the purpose of this research, multiple comparisons of sub-iliac lymph nodes ...
DOI:
10.3390/microorganisms10010120

7. A systematic review of the utility of biomarkers as aids in the early diagnosis and outcome prediction of bovine respiratory disease complex in feedlot cattle

Author:
Jing Li; Yiping Zhu; Brian Shoemake; Bo Liu; Pamela Adkins; Laurie Wallace
Source:
Journal of veterinary diagnostic investigation 2022 v.34 no.4 pp. 577-586
ISSN:
1943-4936
Subject:
feedlots,   etc   ; biomarkers; blood; bovine respiratory disease; cattle; early diagnosis; financial economics; prediction; systematic review;     Show all 9 Subjects
Abstract:
... Bovine respiratory disease complex (BRDC) is a common, serious problem in feedlot cattle worldwide. Early diagnosis and outcome prediction are critical for making decisions to prevent economic loss and to limit antimicrobial use. Diagnosing BRDC is commonly based on visual signs and behavioral changes; both assessments are considered to have low diagnostic accuracy. Biomarkers are important for su ...
DOI:
10.1177/10406387221081232

8. Acute interstitial pneumonia and the biology of 3-methylindole in feedlot cattle

Author:
Luke A. J. Haydock; R. Kent Fenton; Lauren Sergejewich; E. James Squires; Jeff L. Caswell
Source:
Animal health research reviews 2022 v.23 no.1 pp. 72-81
ISSN:
1475-2654
Subject:
feedlots,   etc   ; animal health; beef; beef industry; beef production; microbiome; pathogenesis; pneumonia; research; stakeholders; vaccination;     Show all 11 Subjects
Abstract:
... Acute interstitial pneumonia (AIP) of cattle has been recognized for many decades. While the pathogenesis and risk factors for this condition in pastured cattle are relatively well characterized, there remains a poor understanding of the disease as it occurs in intensively fed cattle such as in beef feedlots. Specifically, in pastured cattle, AIP results from excessive ruminal production of the pn ...
DOI:
10.1017/S1466252322000020

9. Development of a welfare assessment protocol for practical application in Argentine feedlots

Author:
Débora Silvia Racciatti; Diego Nicolas Bottegal; Natalia María Aguilar; Marcela Liliana Menichelli; Trinidad Soteras; María Zimerman; Andrea Karina Cancino; Gisela Ariana Marcoppido; Isabel Blanco-Penedo; Joaquim Pallisera Lloveras; Leandro Ezequiel Langman
Source:
Applied animal behaviour science 2022 v.253 pp. 105662
ISSN:
0168-1591
Subject:
feedlots,   etc   ; animal behavior; animal welfare; beef cattle; equipment; farms; models; sample size; welfare assessment; Argentina;     Show all 10 Subjects
Abstract:
... The intensification of livestock farming has led to the expansion of feedlots in many countries and Argentina is not an exception. As in any other husbandry context, there is a need to objectively adopt an evidence-based approach to monitoring animal welfare in feedlots. This research aimed to describe the stages that took part in the development process of Bienest.AR, a beef cattle evaluation pro ...
DOI:
10.1016/j.applanim.2022.105662

10. Feedlot Factors Influencing the Incidence of Dark Cutting in Australian Grain-Fed Beef

Author:
Cameron C. Steel; Angela M. Lees; Garth Tarr; Frank R. Dunshea; Des Bowler; Frances Cowley; Robyn D. Warner; Peter McGilchrist
Source:
Animals 2022 v.12 no.15 pp. -
ISSN:
2076-2615
Subject:
feedlots,   etc   ; ambient temperature; beef; cattle; climate; grain-fed livestock; pH; rain; risk; slaughterhouses; solar radiation;     Show all 11 Subjects
Abstract:
... It has been well-established that dark cutting (DC) is a multifactorial issue that is associated with numerous animal and management factors. However, there is limited understanding of the feedlot-based factors that contribute to the influence of DC. The aim of this study was to evaluate the effect of climate, animal, and feedlot factors on the incidence of pH non-compliance in Australian grain-fe ...
DOI:
10.3390/ani12151989

11. Investigating perceptions, adoption, and use of digital technologies in the Canadian beef industry

Author:
Ayoola Makinde; Muhammad Muhaiminul Islam; Katharine M. Wood; Emily Conlin; Melissa Williams; Stacey D. Scott
Source:
Computers and electronics in agriculture 2022 v.198 pp. 107095
ISSN:
0168-1699
Subject:
feedlots,   etc   ; agriculture; animal health; beef; beef industry; computer software; electronics; innovation adoption; livestock; stakeholders; Ontario;     Show all 11 Subjects
Abstract:
... This research investigated digital technology adoption in the Canadian beef farming industry. The study was carried out from the point of view of two different stakeholders, farmers and veterinarians, to understand current perceptions, level of awareness, and experiences with digital precision livestock farming (PLF) technologies being used on Canadian beef farms. The study specifically focused on ...
DOI:
10.1016/j.compag.2022.107095

12. Can we obtain high productivity allied to environmental gains? An emergy-economic study of sheep meat production systems

Author:
Danny A. Rojas-Moreno; Rafael Araújo Nacimento; Yuli A. Pena-Bermudez; Vanessa Theodoro Rezende; Gustavo L. Sartorello; Carmo Da Silva Filho; Feni Agostinho; Ives C.S. Bueno; Augusto H. Gameiro
Source:
Journal of cleaner production 2022 v.365 pp. 132722
ISSN:
0959-6526
Subject:
feedlots,   etc   ; economic performance; emergy; farming systems; markets; meat production; profitability; sheep; sheep meat; sustainable development; Brazil;     Show all 11 Subjects
Abstract:
... Lamb production in Brazil has the state of São Paulo as its largest consumer market, but due to competition for area with other agricultural activities, sheep farming in São Paulo underwent an intensification of the production system to achieve better economic profitability. This intensification can compromise the sustainability of the system. There is no research concerning about emergy evaluatio ...
DOI:
10.1016/j.jclepro.2022.132722

13. Metaphylactic antimicrobial effects on occurrences of antimicrobial resistance in Salmonella enterica, Escherichia coli and Enterococcus spp. measured longitudinally from feedlot arrival to harvest in high‐risk beef cattle

Author:
Nathan S. Long; James E. Wells; Elaine D. Berry; Jerrad F. Legako; Dale R. Woerner; Guy H. Loneragan; Paul R. Broadway; Jeff A. Carroll; Nicole C. Burdick Sanchez; Samodha C. Fernando; Carley M. Bacon; Cory L. Helmuth; Taylor M. Smock; Jeff L. Manahan; Ashley A. Hoffman; Kristin E. Hales
Source:
Journal of applied microbiology 2022 v.133 no.3 pp. 1940-1955
ISSN:
1364-5072
Subject:
feedlots,   etc   ; Enterococcus; Escherichia coli; Salmonella enterica; antibiotic resistance; beef cattle; ceftiofur; crossbreds; feces; florfenicol; lymph; microbiology;     Show all 12 Subjects
Abstract:
... AIMS: Our objective was to determine how injectable antimicrobials affected populations of Salmonella enterica, Escherichia coli and Enterococcus spp. in feedlot cattle. METHODS AND RESULTS: Two arrival date blocks of high‐risk crossbred beef cattle (n = 249; mean BW = 244 kg) were randomly assigned one of four antimicrobial treatments administered on day 0: sterile saline control (CON), tulathrom ...
DOI:
10.1111/jam.15691

14. HoBi-like pestivirus in 2 cases of fatal respiratory disease of feedlot cattle in Argentina

Author:
Carlos A. Margineda; Franco Matías Ferreyra; Franco Masnyj; Maximiliano Audrito; Paula Melisa Favaro; Dus Santos María José; Andrea Pecora
Source:
Journal of veterinary diagnostic investigation 2022 v.34 no.4 pp. 693-698
ISSN:
1943-4936
Subject:
feedlots,   etc   ; Mannheimia haemolytica; Pestivirus; bovine respiratory disease; bronchopneumonia; etiological agents; immunohistochemistry; lungs; pathogenesis; phylogeny; viruses; Argentina;     Show all 12 Subjects
Abstract:
... HoBi-like pestivirus (HoBiPeV) is an emerging virus that has been detected in cattle and other ruminants. We diagnosed 2 cases of fatal bovine respiratory disease complex (BRDC) associated with infection with HoBiPeV in a feedlot in Argentina. The main findings in 2 steers autopsied were interstitial bronchopneumonia (case 1) and fibrinous bronchopneumonia (case 2). HoBiPeV was detected by RT-PCR ...
DOI:
10.1177/10406387221098356

15. Effectiveness of food traceability system in the supply chain of local beef and beef sausages in Malawi: A food safety perspective

Author:
Demster Chisomo Edward Kumvenji; Moses Vernonxious Madalitso Chamba; Kingsley Lungu
Source:
Food control 2022 v.137 pp. 108839
ISSN:
0956-7135
Subject:
feedlots,   etc   ; beef; cattle; food safety; human resources; laws and regulations; public health; supply chain; traceability; Malawi;     Show all 10 Subjects
Abstract:
... A study was conducted to determine status of traceability system implementation in the supply chain of local beef and beef sausages in Malawi, and tried to identify key factors affecting the implementation, in an attempt to find solutions to traceability issues, to ensure safety of these food products for consumers. Eighty-two (82) samples of cut beef (40) and beef sausages (42) were identified fr ...
DOI:
10.1016/j.foodcont.2022.108839

16. Effects of Rumen-protected Glucose Supplementation on Growth Performance, Body Measurements and Plasma Biochemical Indices of Fattening Chinese Simmental Bulls

Author:
Li Lingyan; Xianchao Guan; Hongliang Wang; Fuzhong Zhao; Qu Yongli
Source:
Indian journal of animal research 2022 v.56 no.5 pp. 563-568
ISSN:
0976-0555
Subject:
feedlots,   etc   ; Simmental; animal research; blood glucose; bulls; chest; diet; fatty acids; feed conversion; glucose; growth performance; China;     Show all 12 Subjects
Abstract:
... The objective of the study was to investigate the effects of rumen-protected glucose (RPG) supplementation on growth performance, body measurements and plasma biochemical indices of Simmental bulls in Northeast China during the fattening period. A 90 d feedlot study was conducted using thirty Simmental bulls (body weight= 444.3±26.9 kg). Bulls were randomly allocated into three groups to receive a ...
DOI:
10.18805/IJAR.B-1403

17. Effects of organic trace mineral supplementation on the prevalence of digital dermatitis in beef feedlot cattle

Author:
K. Anklam; M. Kulow; A. Gander; J. Wolf; E. Loe; C. Larson; M. Branine; D. Döpfer
Source:
Applied animal science 2022 v.38 no.4 pp. 380-391
ISSN:
2590-2865
Subject:
feedlots,   etc   ; beef; beef cattle; carcass weight; data collection; dermatitis; diet; growth performance; regression analysis; slaughter; trace elements;     Show all 11 Subjects
Abstract:
... The aim of the study was to evaluate the effects of organic trace mineral (OTM) supplementation (Availa Plus, Zinpro Corporation) on the prevalence of digital dermatitis (DD) and growth performance in feedlot beef cattle. A blinded, randomized, controlled field study in a commercial beef cattle feedlot was performed for 11 mo. The study was conducted in 2 phases: the adaptation phase comprised the ...
DOI:
10.15232/aas.2022-02277

18. Mycoplasma bovis-pneumonia and polyarthritis in feedlot calves in Argentina: First local isolation

Author:
Germán Cantón; Ignacio Llada; Carlos Margineda; Facundo Urtizbiría; Sofía Fanti; Valeria Scioli; María Andrea Fiorentino; Enrique Louge Uriarte; Eleonora Morrell; Erika Sticotti; Pablo Tamiozzo
Source:
Revista argentina microbiología 2022 pp. -
ISSN:
0325-7541
Subject:
feedlots,   etc   ; Mycoplasma bovis; arthritis; bovine respiratory disease; consensus sequence; distress; fever; lameness; lungs; monitoring; pneumonia; tenosynovitis; Argentina;     Show all 13 Subjects
Abstract:
... Bovine respiratory disease (BRD) is one of the most frequent clinical concerns in weaned calves after their arrival at the feedlot. This work reports the first local isolation of Mycoplasma bovis from feedlot calves with pneumonia and polyarthritis in Argentina. Twenty four out of 545 calves showed progressive, subacute to chronic respiratory distress, coughing, and fever. Thirty percent of the af ...
DOI:
10.1016/j.ram.2022.02.005

19. Scoping Review on Risk Factors and Methods for the Prevention of Bovine Respiratory Disease Applicable to Cow–Calf Operations

Author:
Shih-Yu Chen; Pedro Negri Bernardino; Erik Fausak; Megan Van Noord; Gabriele Maier
Source:
Animals 2022 v.12 no.3 pp. -
ISSN:
2076-2615
Subject:
feedlots,   etc   ; animals; bovine respiratory disease; computer software; diet; farm management; herds; meta-analysis; morbidity; trace elements; yeasts;     Show all 11 Subjects
Abstract:
... The presented scoping review summarizes the available research evidence and identifies gaps in knowledge for bovine respiratory disease (BRD) prevention. Published literature on BRD from 1990 to April 2021 was searched in online databases, including Medline, CAB Abstracts, Scopus, Biosis, and Searchable Proceedings of Animal Conferences. Citations were systematically evaluated in a three-stage app ...
DOI:
10.3390/ani12030334

20. Performance and economic analysis of Nellore cattle finished in feedlot during dry and rainy seasons

Author:
Andressa S. Santos; Severino DJ Villela; Fernando de Paula Leonel; Lucas L. Verardo; Josimari ReginaPaschoaloto; Pedro VR Paulino; Éllem Maria de Almeida Matos; Paulo Gustavo M de Almeida Martins; Gabriel Machado Dallago; Patrícia Monteiro Costa
Source:
Livestock science 2022 v.260 pp. 104903
ISSN:
1871-1413
Subject:
feedlots,   etc   ; Nellore; animal performance; body weight; cattle; diet; dry season; economic sustainability; opportunity costs; profitability; wet season;     Show all 11 Subjects
Abstract:
... We aimed at evaluating the animal performance and economic variables of Nellore cattle finished in feedlot during the dry and rainy seasons. A total of 1,908 Nellore animals with an average age of 24 months were used. These animals were separated into two groups: 1,021 animals, with an average body weight of 400 kg, wereconfined for 100 days in the dry season and 887 animals, with an average body ...
DOI:
10.1016/j.livsci.2022.104903