The aim of the current study was to explore growth performance and carcass traits using ultrasound measurements calves different cattle breeds under pasture concentration feeding system. A total 25 male between ages 6 7 months with an average body weight 162.37 ± 7.7 kg were fed two separate fattening trials for seven (pasture finishing period). Animals divided into five groups (five each breed...

Transportation stress can result in significant economic losses to producers due to decreased animal productivity and increased medication costs associated with sickness such as bovine respiratory disease (BRD). Meloxicam (MEL) provides pain relief and anti-inflammatory effects in cattle for several days after a single oral treatment. Our hypothesis was that MEL administration before shipping w...

Of 1,004 isolates of Escherichia coli obtained during the spring of 1975 in seven different states from calves with diarrhea, 124 isolates were enterotoxigenic based upon ability to cause distention of the calf ligated intestinal segment. Isolates of enterotoxigenic E. coli (ETEC) were obtained from calves in six of the seven states. ETEC were detected in calves in 118 of 355 herds in Montana d...

In cattle, a gregarious species, the social group influences individual stress responses to fear-eliciting situations. As handling can be stressful for farm animals, it can be hypothesised that social partners modify individual responses to handling. The present experiment investigated the effect of the presence or absence of social partners on behavioural reactions of beef calves in a handling...

Recent outbreaks of Rift Valley fever in ruminant livestock, characterized by mass abortion and high mortality rates in neonates, have raised international interest in improving vaccine control strategies. Previously, we developed a reliable challenge model for sheep that improves the evaluation of existing and novel vaccines in sheep. This sheep model demonstrated differences in the pathogenes...

BACKGROUND Calf output is a key element in determining the profitability of a suckler beef enterprise. Infectious agents such as Bovine Virus Diarrhoea (BVD) virus, colostrum management and parasitic challenge can all affect calf output. Prior to the national BVD eradication programme, there was little published information on either the prevalence or effect of BVD in Irish beef herds. There is...

Calving difficulty (dystocia) contributes heavily to losses in production in beef cow/calf herds. The obvious losses are due to calves or cows that die at or soon after calving. Less noticeable losses are due to delayed rebreeding, more open females, an extended calving season and increased labor costs. While occasional dystocia is almost unavoidable, through proper management, cattlemen can mi...

We used ISO-compliant life cycle assessment (LCA) to compare the cumulative energy use, ecological footprint, greenhouse gas emissions and eutrophying emissions associated with models of three beef production strategies as currently practiced in the Upper Midwestern United States. Specifically we examined systems where calves were either: weaned directly to feedlots; weaned to out-of-state whea...

13 Weaning management of newly received beef calves with or without continuous exposure to a persistently infected bovine viral diarrhea virus pen mate: Effects on rectal temperature, peripheral blood leukocytes and serum proinflammatory cytokine concentrations. J. T. Richeson*1, E. B. Kegley1, J. G. Powell1, R. G. Schaut2, R. E. Sacco3, and J. F. Ridpath3, 1University of Arkansas, Fayetteville...

Respiratory disease in cattle is often associated with the youngest animals such as calves, heifers or steers (Hartel et al. 2004; Ames, 1997). Most cases appear before the age of two-years old (if not before the end of the first month of life-Crowe, 2001), and respiratory disease is a major cause of losses, particularly in beef cattle production (Prado et al. 2005; Kapil & Basaraba, 1997; John...