Published in Journal of Animal Science
Over the past 50 years tremendous advances were made in reproductive and genetic technologies that are available for beef cow-calf producers. In addition, extensive research has been done to establish the efficacy and economic advantages of adoption of such technologies. Nonetheless, adoption of reproductive and genetic technologies in beef cow-cal...
Published in Journal of Animal Science
Reproductive efficiency and efficacy are key components of economic return in small ruminant production, therefore utilization of assisted reproductive technologies has increased. Despite advances in assisted reproductive technologies, pregnancy rates per embryo culture and transfer still remain low. The physio-chemical parameter of pH within the f...
Published in Journal of Animal Science
Data from cattle and sheep studies are often utilized interchangeably to make inferences regarding ruminant nutrition and physiology, but few studies have directly compared rumen microbiological responses. The objective of this study was to evaluate species differences in ex vivo fermentation of concentrates and forages. Rumen fluid was obtained vi...
Published in Journal of Animal Science
Effects of cyclic monensin feeding on in situ disappearance kinetics of low-quality forage (LQF; 4.9% CP) were evaluated. Ruminally cannulated steers (n = 12; Bos taurus ; 260 kg BW) consuming LQF were randomly assigned to of 3 treatments in a completely randomized design: CON (0 mg∙animal-1∙day-1 monensin; Rumensin 90, Elanco Animal Health, Greenf...
Published in Journal of Animal Science
Quality Matters (QM) program consists of a stringent course quality peer-review process designed to give faculty feedback on the structure of online/hybrid courses which results in the national certification by the QM organization (Lynch and Gaston, 2020). The objective of this pedagogical study was to quantify student perceptions of online learnin...
Published in Journal of Animal Science
The objective of this experiment was to evaluate the impact of a yeast-derived product (Celmanax; Church & Dwight Co., Inc.; Princeton, NJ) supplementation on performance of beef calves during the backgrounding phase. A total of 44 male castrated beef calves [249 ± 31 kg body weight (BW), 296 ±8 days of age], were stratified by BW and randomly assi...
Published in Journal of Animal Science
Monensin is a carboxylic polyether ionophore that has the ability to alter ruminal fermentation and microbial populations in the rumen. Current research shows monensin to have beneficial effects on feed efficiency, specifically, a reduction in average daily feed intake and an increase in gain. Ten ruminally cannulated steers [5 Bos indicus (BI), 5 ...
Published in Journal of Animal Science
Neonatal and weaning periods are the most challenging phases for enteric infections in dairy calves. While different approaches are used to minimize calf health issues, the neonatal diet remains the core approach to enhance pre- and post-weaning animal health and performance. Previous studies have shown that bioactive compounds, including oligosacc...
Published in Journal of Animal Science
Parasite-resistant St. Croix sheep generate a potent neutrophilic response to larval stages of Haemonchus contortus . Protective neutrophil responses can be best characterized by increased neutrophil infiltration to the abomasum within the first 3 days of infection. These data indicate breed differences in neutrophil chemotaxis and response to H. c...
Published in Journal of Animal Science
The objective was to evaluate growth performance and estimates of body composition in offspring of dams that consumed diets containing tall fescue seed with (E+) or without (E-) the toxic endophyte and with or without melatonin during mid-late gestation. Pregnant heifers (n = 57) artificially inseminated with sex-sorted semen (X chromosome-bearing ...
