Browsing by Author "Forrest, David"
Now showing items 1-15 of 15
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Poe, Allen Brant (2016-07-27)Career-building competitions, such as collegiate livestock evaluation, claim to enhance writing and speaking skills, confidence in making decisions, teamwork, and critical thinking skills of participants, yet there is ...
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Dworaczyk, Marissa Coral (2016-12-14)Over the course of two breeding seasons, the ovarian activity and concentrations of progesterone, luteinizing hormone (LH), and cortisol were evaluated and compared in six exercising (EXER) mares and six non-exercising ...
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Luksovsky, Joe (2012-02-14)A study was undertaken to evaluate and compare the effectiveness of three anthelmintics, ivermectin, fenbendazole, and a combination of ivermectin and pyrantel pamoate, on fecal egg count reductions of cyathostomes and ...
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Cushioned centrifugation of stallion semen: factors impacting equine sperm recovery rate and quality Waite, Jessica Arlene (2009-05-15)Centrifugation of stallion semen is an integral part of the cryopreservation procedure, primarily allowing for the concentration of sperm and removal of seminal plasma. In addition, centrifugation is required for maximizing ...
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Romano, Juan Eduardo (Texas A&M University, 2006-04-12)Pregnancy diagnosis by transrectal ultrasonography (using a 5 MHZ linear probe) presented the maximum sensitivity and negative predictive values at day 26 and day 29 after estrus in heifers and cows, respectively. Palpation ...
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Salazar, Jose L. (2010-10-12)Three ejaculates from each of eight stallions were initially centrifuged in INRA 96 extender and spermatozoal pellets were resuspended in a milk/egg yolk-based freezing extender or an egg yolk-based freezing extender. ...
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Rathmann, Ryan James (Texas A&M University, 2007-04-25)The current study involved two experiments which were conducted at the Texas A&M Agricultural Research and Extension Center in Uvalde (semi-arid environment) from 2002 to 2004. In experiment one, Bonsmara bulls (n = 19; ...
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Paczkowski, Melissa Jeanne (Texas A&M University, 2005-11-01)Angus-sired heifers were allotted by age (mean=4 mo), BW (mean=135 kg), and sire (n=4) to either a control (n=10) or infected group (n=11; 600 metacercariae of Fasciola hepatica, intraruminally) to test our hypothesis that ...
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Effects of Krebs Cycle Acids and Erythritol in Clarified Egg Yolk Media on Dairy Bull Sperm Motility Roach, Alexis Nicole (2019-04-09)Motility rates of sperm cells affect conception rates, which affect overall dairy production rates. Cryopreservation of cells can damage the cell’s integrity and biological functions, including motility. Fresh and thawed ...
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Pena, Carlos Raul (2020-01-14)The genetics of longevity in beef cattle production is a critical aspect of efficiency, thus making it an economically important trait. Variation in longevity has been observed between different breeds, and is dependent ...
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Nelson, John Stephen (2009-05-15)Two trials were conducted to compare the effectiveness of fixed-time artificial insemination (AI) to AI based upon visual detection of estrus following superstimulation of donor beef cows. In Trial 1, multiparous beef cows ...
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Bluntzer, James Stanley (Texas A&M University. Libraries, 1982)One hundred and six primiparous Brahman percentage cows were used to determine the effect of suckling manipulation on postpartum reproductive performance. Variables measured included weight, body condition scores, pelvic ...
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Delovio, Malcolm Leihulu (2012-10-19)A baculovirus (Spodoptera frugiperda) system was designed to express recombinant canine thyroid stimulating hormone (rcTSH). The efficacy of rcTSH was measured against pituitary derived bovine thyroid stimulating hormone ...
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Stutts, Kyle Jeffrey (Texas A&M University, 2006-10-30)Two experiments tested the efficacy of gonadotropin-releasing hormone (GnRH) or estradiol cypionate (ECP) administration in combination with controlled internal drug release (CIDR) inserts on pregnancy rate to fixed-time ...
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Comerford, Kathryn L. (2010-01-16)Accurate measurement of stallion spermatozoal concentration is important to equine breeding operations. The hemacytometer is considered the standard for measuring spermatozoal concentration but is time consuming and may ...