Browsing by Department "Animal Science"
Now showing items 1-20 of 508
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A Quantitative Genetic Analysis of the Ancestry of Neil Trask Line Bred Hereford Cattle
(2019-07-19)Diverse expression of any given trait within a breed is required to protect the breed from the unwanted consequences of selective breeding. Within the cattle industry, the fluid state of selective breeding trends, and ... -
A Quantitative Genetic Analysis of the Ancestry of Neil Trask Line Bred Hereford Cattle
(2019-07-19)Diverse expression of any given trait within a breed is required to protect the breed from the unwanted consequences of selective breeding. Within the cattle industry, the fluid state of selective breeding trends, and ... -
A Survey of Postmortem Aging Times for Beef Steaks Marketed in the Retail Channel
(2015-07-29)This study was designed to determine the actual postfabrication storage time or aging time for beef rib/loin cuts sold at retail. Postmortem aging of beef is a commonly accepted practice in today’s industry; however, not ... -
Acclimation of Holstein Calves to Transit Stress: The Integration of Endocrine, Immune, and Behavior Systems
(2012-10-19)Little is known about the adaptation of livestock to repeated transport. This study determined how repeated transport affected calf feed intake, plasma cortisol (CORT), post-transport behavior, and the expression of ... -
Activity of group-transported horses during onboard rest stops
(Texas A&M University, 2007-04-25)Activity of group-transported horses was evaluated during onboard rest stops to determine if horses derive meaningful rest. A single-deck semi-trailer separated into three compartments was used for all shipments. In ... -
Adipogenesis in post-weanling pigs fed conjugated linoleic acid
(Texas A&M University, 2004-11-15)The effects of conjugated linoleic acid (CLA) on lipogenesis and preadipocyte proliferation in young pigs were evaluated in two separate experiments. The first compared dietary effects of linoleic acid, beef tallow, and ... -
Adjusting Milk Replacer Intake During Heat Stress and Non-heat Stress as a Means of Improving Dairy Calf Performance
(2012-07-16)The objective of this study was to evaluate the effects of heat stress and varying levels of milk replacer on dairy calf performance. Holstein bull calves ≤ 2 d of age were randomly assigned housing, outside under a covered ... -
Age-Related Effects on Markers of Inflammation and Cartilage Metabolism in Response to an Intra-Articular Lipopolysaccharide Challenge
(2014-11-25)Eighteen Quarter Horses were utilized in a randomized complete design for a 28 d experiment to evaluate age-related effects on inflammation and cartilage turnover after induction of a single inflammatory insult using ... -
Amino acids, polyamines, and nitric oxide synthesis in the ovine conceptus
(Texas A&M University, 2005-08-29)The objective of this study was to determine concentrations of amino acids and polyamines as well as nitric oxide (NO) and polyamine synthesis in the ovine conceptus (embryo/fetal and associated placental membrane). Ewes ... -
An Evaluation of Feedyard Management Strategies to Optimize Cattle Feeding Performance and Animal Health
(2019-07-26)End products of ruminal fermentation differ based on availability of structural (fiber) and nonstructural (starch) carbohydrates. Two experiments were conducted to evaluate the effect of dietary components (starch and ... -
An Evaluation of Growth and Body Composition of Droughtmaster Cattle in Northern Queensland
(2015-05-05)The overall objective of this research was to evaluate impacts on growth of Droughtmaster cattle in northern Queensland based on four years (2009-2012) of repeated weight records from a single operation. Animals (total ... -
An Evaluation of the Livestock 101 Educational Exhibit at the State Fair of Texas
(2019-04-09)The need to produce enough food to feed the world is met with a quickly growing world population and new perspectives of agriculture amongst consumers, creating a divide from producer to purchaser. Consumers no longer have ... -
An Exploration of Biological Mechanisms that Impact Intake and Feed Efficiency in the Grazing Animal
(2013-05-21)Biological mechanisms that potentially contribute to residual feed intake (RFI) have not been fully understood in the grazing animal. The objective of this study was to determine the differences of RFI measured in confinement ... -
An investigation of communications process within the Texas beef industry
(2014-04-10)The purpose of this qualitative study was to identify and describe the communication process between and among sectors, and their corresponding members, in the Texas beef cattle industry. An inductive, qualitative approach ... -
Analysis of estrone sulphate, testosterone, and cortisol concentrations around time of ejaculation and potential correlation to sexual behavior and sperm characteristics in stallions
(2010-07-14)In the stallion, inconsistent sexual behavior and variable semen quality are common. This reproductive variability has been attributed to differences in circulating hormone concentrations. In order to further examine this ... -
Analysis of Methylation Patterns in Ejaculated Sperm from F1 Nellore-Angus Crossbred Bulls
(2016-12-06)Methylation of the carbon 5 position of cytosine is a common epigenetic mark in vertebrates, and has been associated with male infertility. Methylation can be affected by environmental changes in utero and our long-term ... -
Analysis of records of embryo production in Red Brahman cows
(Texas A&M University, 2005-11-01)Records of embryo production in Red Brahman donor cows (n=50) and F1 recipients (n=531) were evaluated from the collection day to the birth of the embryo produced. The effects of the sire of the donor and the embryo, ... -
Anterior Gradient Homolog 2 and Its Potential Roles In Ovine Pregnancy
(2014-08-13)Anterior gradient homolog 2 (AGR2) is a proto-oncogene that encodes a secreted protein with biological roles in cell migration, differentiation, and growth, and is also implicated in epithelial barrier function and integrity. ... -
Anterior Pituitary Responsiveness of the Cyclic and Seasonally Anovulatory Mare to Continuous Infusions of Gonadotropin-Releasing Hormone
(2010-07-14)In Experiment 1, 12 cyclic mares were assigned randomly to one of two groups (n = 6/group): 1) Control, saline; and 2) GnRH, 100 mu g/h. Between 3 and 6 d after ovulation (Day 0), Alzet osmotic minipumps (Model 2ML1) ... -
Anti Mullerian Hormone Concentrations as a Predictor of Superovulation Response and Conception Rate in Beef Females
(2015-08-11)The primary objective of this study was to determine the relationship of anti-Müllerian hormone (AMH) to ova production in various breeds of cattle in an embryo transfer program. Factors evaluated included breed type, age, ...