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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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
... 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 ...
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 ...
... 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 ...
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
... 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 ...
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
... 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 ...
... 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 ...
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 ...
... 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 ...
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 ...
Germán Cantón; Ignacio Llada; Carlos Margineda; Facundo Urtizbiría; Sofía Fanti; Valeria Scioli; María Andrea Fiorentino; Enrique Louge Uriarte; Eleonora Morrell; Erika Sticotti; Pablo Tamiozzo
... 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 ...
... 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 ...
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
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 ...