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Uses Of Genomic Predictions In Commercial Beef Cattle Operations, Matt Miller
Uses Of Genomic Predictions In Commercial Beef Cattle Operations, Matt Miller
Dairy Science
This paper aimed to achieve two different objectives. The first objective of this study was to identify and explain the genetic gain achieved in commercial beef cattle operations with the use of genomic predictions versus the use of visual appraisal and EPDs. The second goal of this paper was to develop a method to easily explain genomic predictions and their practical applications on commercial beef operations to a lay audience, specifically to ranchers. In order to accomplish these objectives, I evaluated three of the most common selection methods used by producers today. These included visual appraisal, expected progeny differences (EPDs), …
A Survey Of Heterologous Expression Systems For The Production Of Bovine Follicle Stimulating Hormone And Luteinizing Hormone, Marcia Hesser
A Survey Of Heterologous Expression Systems For The Production Of Bovine Follicle Stimulating Hormone And Luteinizing Hormone, Marcia Hesser
All Dissertations
Follicle stimulating hormone (FSH) and luteinizing hormone (LH) are glycoprotein gonadotropins from the anterior pituitary gland that are involved in reproductive functions. They are heterodimeric proteins that share a common α-subunit that is highly conserved amongst mammalian species, and is also conserved across this family of proteins. The β-subunit confers receptor specificity and is distinct. Recombinant gonadotropin expression would be an important advance for the bovine superovulation industry, as there are a number of disadvantages associated with the currently used pituitary-derived gonadotropins. For example, these pituitary products are contaminated with other proteins including hormones, exhibit batch-to-batch inconsistencies, and harbor the …
Effects Of Adipogenic Compounds On Growth Performance, Hormonal Status And Fat Deposition Of Finishing Beef Steers, Susanna Elizabeth Kitts
Effects Of Adipogenic Compounds On Growth Performance, Hormonal Status And Fat Deposition Of Finishing Beef Steers, Susanna Elizabeth Kitts
University of Kentucky Doctoral Dissertations
Processes that regulate site of fat deposition in beef cattle are poorly understood. For the producer to procure the greatest profit, it is ideal to maximize intramuscular fat. Furthermore, to understand the physiological mechanisms affecting fat depots, it is necessary to evaluate hormones involved in growth regulation. Using a 2 x 2 factorial design of treatments, four experiments were conducted to examine two adipogenic compounds, chlortetracycline and dexamethasone. Synovex-S® and Revalor-S® were used to investigate potential interactions between growth implants and adipogenic compound. Growth performance, carcass quality, organ and fat mass and plasma hormone concentrations were measured in these studies. …