Browsing by Department "Animal Science"
Now showing items 1-20 of 469
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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 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 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, ... -
Antibody Mediated Immune Response and Cellular Mediated Immune Response Characterization in Brahman Cattle
(2017-09-05)The studies described herein were designed to characterize measures of immune responsiveness in weaned Brahman calves, breeding bulls and cows. Experiment 1 included 55 weaned bull and 57 weaned heifer Brahman calves. ... -
Antimicrobial Efficacy of Liposome Encapsulated Nisin and Nisin's Inhibition Against Listeria monocytogenes in Fluid Milk at Different Storage Temperatures
(2010-10-12)Nisin is a naturally occurring food antimicrobial that inhibits many Grampositive pathogens, including Listeria monocytogenes, a bacterial pathogen responsible for ~500 deaths in the U.S. annually. Factors known to counteract ... -
Application of Fecal Near Infrared Reflectance Spectroscopy and N-Alkane Labeled Supplementation Techniques to Predict Voluntary Intake in Beef Cattle
(2014-07-17)The objectives of this study were to evaluate the use of fecal NIRS profiling and the n-alkane labeled supplementation method for the prediction of voluntary intake in beef cattle for the identification of animals divergent ... -
Application of Partial Least Squares Regression to Predict Dry Matter Intake and Feed Efficiency Based on Feeding Behavior Patterns in Beef Cattle
(2018-05-08)Feed expenses are the largest driver of input cost in the beef industry, thus, increasing the genetic merit of beef cattle efficiency is an effective strategy to improve the environmental and economic sustainability of ...