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Effects of grazing management and targeted anthelmintic administration on the performance, parasite burden, and hematologic profiles of hair sheep
(2020-12)
The objective of this experiment was to determine if extensively managed rotational grazing would impact the performance, fecal egg counts, and hematologic profiles of hair sheep ewes and lambs. Crossbreed hair sheep ewes ...
Comparison of various ectoparasite control strategies and viral vaccine regimens in feedlot cattle: Impacts on performance, health, parasite burden, acute phase proteins, and antibody titers
(2021-07)
Two experiments were conducted to compare various ectoparasite control strategies and viral vaccine regimens in feedlot cattle to determine the impacts on performance, health, parasite burden, acute phase proteins, and ...
Effects of hay maturity on the enteric methane emissions, forage intake, energy metabolism and digestion by beef heifers
(2023-05)
Ruminants are a primary source of food security and play an essential part in sustainable agriculture. Ruminants consume fibrous feedstuffs and convert them to highly nutritional food and consumable products. While doing ...
Maintenance energy requirements in mature beef cows and relationships with metabolic hormones, adipose gene expression, and calf performance
(2015-12)
Nonlactating, spring-calving Angus cows in mid to late gestation were used to determine variation in maintenance energy requirements (MR) and evaluate relationships between MR and concentrations of triiodothyronine (T3), ...
Effect of postpartum nutrition on the onset of ovarian activity in beef cows
(2005-12)
Scope and Method of Study: Effects of nutrition on insulin-like growth factor-I (IGF-I) and insulin in plasma and dominant follicles (DF), and IGF binding proteins in DF were evaluated in anovulatory primiparous Angus x ...
FSH and IGF-I signal via AKT to regulate beta-catenin accumulation and estradiol production in granulosa cells
(2016-05)
Estradiol is the female sex hormone that profoundly influences the female reproductive system from puberty to fertility. Circulating estradiol in women is synthesized primarily by ovarian granulosa cells in response to the ...
Effect of breed, tissue type, and time of weaning on fatty acid composition and gene expression in Angus and Charolais finishing steers
(2010-07)
The effect of breed and tissue type on fatty acid composition and gene expression was evaluated using 33 steer calves. Calves were completely randomized to a 2 x 2 x 2 factorial treatment arrangement: sire breeds (Angus ...
Determination of the mechanism(s) by which direct-fed microbials control Escherichia coli O157:H7 in cattle
(2009-05)
Scope and Method of Study: The purpose of this experiment was to investigate the possible mechanisms responsible for the success of the direct-fed microbials, Lactobacillus acidophilus and Propionibacterium freudenreichii ...