The present study was conducted to determine the effects of lipid sources with different fatty acids profile on meat fatty acids profile and beef quality traits of Nellore. A total of 45 Nellore animals with an average initial body weight of 419±11 kg (at 15±2 mo) were distributed in a completely randomized design consisting of 5 treatments and 9 replicates. The roughage feed was maize silage (...

Transportation from the feedlot and lairage at the processing plant have been identified as potential sources of Escherichia coli O157:H7 and Salmonella hide contamination. The objective of this study was to perform a comprehensive tracking analysis of E. coli O157:H7 and Salmonella associated with beef cattle from the feedlot through processing. Cattle (n = 581) were sampled in a feedlot, then...

Shane Gadberry, Ph.D. Associate Professor ­ Animal Science Feeding supplemental protein or energy to beef cattle consuming a forage­based diet should be viewed as an investment in cattle health and performance. Considering the large selection of supplemental feeds avail­ able, selecting the right feed is a daunting task. As an investment, supplemental feed is necessary to complement the forag...

Intensive milk and beef production is COIlIIlPn to the European agricultural due to a high density of population. Milk and beef traits are involved in breeding objectives of dual-purpose cattle. Various dual-purpose cattle populations cover a wide range of economic ting of milk and beef. The optimal weights of milk and beef characters on the marginal change in profit, and the time and nUIlber o...

phenotypes of four beef breeds (Charolais, hereford, limousin and piemontese) were determined based on the transmission of antigens from parents to offspring in the a blood group system of cattle. the effective number of alleles per locus (e) and the degree of heterozygosity (h) were calculated for different breeds based on the frequency of these phenogroups. most a-phenogrups (18) were found i...

§ 522.313a Ceftiofur crystalline free acid. * * * * * (e) * * * (2) * * * (i) Amount. For subcutaneous (SC) injection in the posterior aspect of the ear where it attaches to the head (base of the ear) in lactating dairy cattle. For SC injection in the middle third of the posterior aspect of the ear or in the base of the ear in beef and non-lactating dairy cattle. (A) Single-dose regimen: 6.6 mg...

The use of bedded hoop barns in finishing systems for beef cattle has not been widely researched. In this management system, beef cattle are confined to hoop barns throughout finishing, and bedding is used to absorb animal waste, which results in minimal effluent. The objective of this study was to compare the performance and carcass characteristics of finishing beef steers (n = 1,428) managed ...

Phenotypic expression of dairy influence often carries negative implications in beef production; thus, considerable variation beef- versus dairy-type might adversely affect value crossbred × cattle. This study evaluated effects phenotype cattle, specifically that associated with dairy-type, on meat quality. Effects were blocked within commercial feedlot pens because cattle a pen contemporaries ...

ABSTRACT: Reproductive effi ciency is of economic importance in commercial beef cattle production, since failure to achieve pregnancy reduces the number of calves marketed. Identifi cation of genetic markers with predictive merit for reproductive success would facilitate early selection of females and avoid ineffi ciencies associated with sub-fertile cows. To identify regions of the genome harb...