An experiment was conducted to determine the efficacy of dietary conjugated linoleic acid (CLA) as a growth promotant in weanling swine. Weanling pigs (n = 192; 7.6 kg and 29 d of age) were randomly assigned to four treatments that were arranged as a 2 x 2 factorial. Concentrations of dietary CLA (0 or 0.6%) and antibiotics (+/-) constituted the main effect variables. Dietary CLA treatments con...

A study evaluating the effects of metaphylaxis antibiotics and milk replacer additives on the health and development of Holstein bull calves (n = 52; mean body weight = 42.28 kg + 3 kg; starting age < 3 d) was conducted. The calves were placed into a completely random 3 × 4 factorial design with each group receiving either tilmicosin phosphate (TIL), ceftiofur crystalline free acid (CEF), or sa...

Proliferative enteropathy (ileitis) is a common disease of grower and finisher pigs. Recent studies by the authors have illustrated reliable methods of in vitro culture of the etiologic agent, an obligate intracellular bacterium, known as ileal symbiont (IS) intracellularis.Characteristic lesions of proliferative enteropathy are reproduced when IS intracellularis is used as oral inocula in chal...

1 We determined the prevalence of Escherichia coli O157:H7 in organicallyand 2 naturally-raised beef cattle at slaughter and compared antibiotic susceptibility profiles of 3 the isolates to those from conventionally-raised beef cattle. Prevalence of E. coli O157:H7 4 were 14.8 and 14.2% for organicallyand naturally-raised cattle, respectively. No major 5 difference in antibiotic susceptibility ...

Camels are the most valuable livestock species in the Horn of Africa and play a pivotal role in the nutritional sustainability for millions of people. Their health status is therefore of utmost importance for the people living in this region. Streptococcus agalactiae, a Group B Streptococcus (GBS), is an important camel pathogen. Here we present the first epidemiological study based on genetic ...