Angus×Simmental crossbred heifers (n=150) and steers (n=100) were used to evaluate 1 of 5 growing diets: 1) a corn-based growing diet (CRN); 2) a high-fat, high-protein coproduct blend; 3) a high-fat, low-protein coproduct blend; 4) a low-fat, high-protein coproduct blend; and 5) a low-fat, low-protein coproduct blend in a 2×2+1 factorial arrangement. Low-protein and low-fat diets were formulat...

Abstract Vaccination is one mechanism used as a preventative measure to decrease morbidity and mortality due bovine respiratory disease (BRD), but vaccination efficacy inconsistent. Therefore, the objective of this study was compare effect inactivated (INA) vs. modified live (MLV) viral vaccines on immune phenotype weaned beef calves. Mixed-sexed pens with equal numbers heifers steers were rand...

The objectives of this study were to investigate the effect starch and protein interaction on rumen environment, in situ digestion, total-tract digestibility nutrients weaned dairy calves between 8 16 wk age. Sixteen rumen-cannulated randomly divided into 4 dietary treatment groups with fed each treatment. diets had 2 levels [18%, low (LS), or 38%, high (HS)] [16%, (LP), 22%, (HP)] a dry matter...

Recently weaned calves transported to the feedlot are at risk of infection, illness and even death from Histophilus somni and other pathogens associated with bovine respiratory disease (BRD) throughout the feeding period. Gamithromycin is an azalide 15-membered semi-synthetic macrolide antimicrobial that is licensed in the European Union and Canada for therapeutic and preventative treatment of ...