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Full-Text Articles in Life Sciences
Effects Of Dietary Amino Acid Supplementation On Measures Of Whole-Body And Muscle Protein Metabolism In Aged Horses, Christine M. Latham
Effects Of Dietary Amino Acid Supplementation On Measures Of Whole-Body And Muscle Protein Metabolism In Aged Horses, Christine M. Latham
Theses and Dissertations--Animal and Food Sciences
Sarcopenia is a condition that is most common in aged animals, and is characterized by the loss of skeletal muscle mass and integrity, and can lead to physical disability and poor quality of life. Since skeletal muscle protein synthesis can be limited by the availability of amino acids, supplementation of limiting amino acids to ameliorate the progression of sarcopenia has become a topic of interest in companion animal research. Although there is some data to support the idea that amino acid supplementation improves maintenance of muscle mass in aged horses, the cellular mechanisms behind that improvement have yet to be …
Towards Determination Of The Threonine Requirement Of Yearling Horses Fed Varying Dietary Compositions Using The Indicator Amino Acid Oxidation Method, Kelsey M. Smith
Towards Determination Of The Threonine Requirement Of Yearling Horses Fed Varying Dietary Compositions Using The Indicator Amino Acid Oxidation Method, Kelsey M. Smith
Theses and Dissertations--Animal and Food Sciences
The amino acid requirements of growing horses are currently unknown, and studies suggest that threonine is a limiting amino acid in common horse diets. Thus, the objective of this study was to determine the threonine requirement of growing horses fed two different forage to concentrate ratios using the indicator amino acid oxidation method. The study consisted of a high concentrate phase (HC; 60% concentrate and 40% forage) and a high forage phase (HF; 25% concentrate and 75% forage). Within each phase, 6 female yearling Thoroughbred horses were randomly assigned each of 6 dietary treatments in a 6 x 6 Latin …
Relationships Between Behavioral Measures And Productivity In Finishing Beef Cattle, Jasmyn Mimiko
Relationships Between Behavioral Measures And Productivity In Finishing Beef Cattle, Jasmyn Mimiko
Theses and Dissertations--Animal and Food Sciences
The relationship between measures of temperament, growth performance, and social hierarchy in finishing beef cattle were explored in two experiments. In experiment 1, high OCS (objective chute score) steers had periods of significantly higher ADG (P < 0.01), but OCS had no relationship with dominance ranking (P > 0.47). Conversely, slow exit velocity (EV) correlated with higher ranking (P ≤ 0.06), but EV had no relationship with performance (P > 0.37) in a competitive environment. Rank showed no relationship with performance (P > .58). In experiment 2, steers with fast EV had periods of decreased growth (P ≤ .06), intake (P ≤ .06), and gain:feed (G:F; P = 0.02). There were no interactions between …