A. D. Herring
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View article: 416 GPS precision and data acquisition efficiency of solar-powered collars and tags for beef cattle monitoring.
416 GPS precision and data acquisition efficiency of solar-powered collars and tags for beef cattle monitoring. Open
The use of GPS devices for tracking livestock has evolved rapidly. When integrated with pasture management, GPS devices can enhance understanding of cattle behavior, providing insights into grazing patterns and use within and among pasture…
View article: 317 Maternal citrulline supplementation to nutrient-restricted ewes during gestation programs glycine metabolism in the postnatal lamb.
317 Maternal citrulline supplementation to nutrient-restricted ewes during gestation programs glycine metabolism in the postnatal lamb. Open
Glycine plays important roles in protein synthesis, reducing oxidative stress, one-carbon metabolism, creatine synthesis, and is a conditionally essential amino acid in animal nutrition. Maternal arginine supplementation from gestational d…
View article: 316 Maternal citrulline supplementation increases fetal growth and programs postnatal pancreatic development in the lamb.
316 Maternal citrulline supplementation increases fetal growth and programs postnatal pancreatic development in the lamb. Open
Arginine, a conditionally essential amino acid, has been shown to reduce the incidence of fetal growth restriction following maternal malnutrition, while stimulating development of the pancreas. Despite these beneficial outcomes, supplemen…
View article: Maternal Dietary Citrulline Supplementation Increases Fetal Growth and Programs Pancreatic Development in the Lambs
Maternal Dietary Citrulline Supplementation Increases Fetal Growth and Programs Pancreatic Development in the Lambs Open
Intrauterine growth restriction (IUGR), caused by maternal undernutrition, impairs fetal growth and increases the risk for postnatal metabolic dysfunction. L-arginine can mitigate these effects; however, its use in sheep is limited by rumi…
View article: 50 Awardee Talk: The role of non-traditional inheritance patterns among <i>Bos indicus</i>-<i>Bos taurus</i> crosses for global beef value chain considerations
50 Awardee Talk: The role of non-traditional inheritance patterns among <i>Bos indicus</i>-<i>Bos taurus</i> crosses for global beef value chain considerations Open
Bos indicus-Bos taurus crosses have been effectively used in many production environments globally. Substantially higher amounts of hybrid vigor have been reported in these F1 crosses as compared with those involving only Bos taurus or onl…
View article: Economic-impact variability among F1 Nellore–Angus herd sires reared together and used in multiple-sire mating groups
Economic-impact variability among F1 Nellore–Angus herd sires reared together and used in multiple-sire mating groups Open
This study investigated variation of calf number and resulting economic impacts of F1 crossbred sires that were reared together as calves and used in multi- sire, natural-service breeding groups. Birth (n = 540) and weaning (n = 533) calf …
View article: Beefing up communication skills of upper-level animal science students
Beefing up communication skills of upper-level animal science students Open
Animal scientists face an increasing need to communicate with the lay public because of the public’s interest in the origin and production of animal-sourced foods. Consumers’ increased interest infers a critical need for effective communic…
View article: Genetic evaluation of crossbred <i>Bos indicus</i> cow temperament at parturition
Genetic evaluation of crossbred <i>Bos indicus</i> cow temperament at parturition Open
Cow temperament at parturition may be mostly a measure of aggressiveness. The heritability of cow temperament at parturition in Bos taurus cows has been reported to be low. The objectives of this study were to estimate the heritability of …
View article: 176 Relationships Among Early Life Weight and Growth Among Halfblood <i>Bos Indicus</i> Male Calves and Associations with Carcass Weight
176 Relationships Among Early Life Weight and Growth Among Halfblood <i>Bos Indicus</i> Male Calves and Associations with Carcass Weight Open
Nellore-Angus steers (n = 572) born in 2009-2013, 2015, and 2019 and Brahman-Angus reciprocal steers (n = 73) born in 2019 and 2020 were evaluated for calf and carcass weights (HCW). Calves were born and reared at the McGregor Research Cen…
View article: 154 Antibody and Cell-Mediated Responses Associated with Bvdv and Interferon-Gamma Expression in Reciprocal Angus-Brahman First Generation Crosses
154 Antibody and Cell-Mediated Responses Associated with Bvdv and Interferon-Gamma Expression in Reciprocal Angus-Brahman First Generation Crosses Open
The influence of sex and reciprocal cross type were evaluated in Brahman-sired (B × A) and Angus-sired (A × B) F1 cattle following modified-live viral vaccination regarding virus neutralization titers (VNT) and cell-mediated immune (CMI) r…
View article: Assessment of a COVID-induced shift in the evolution of a beef cattle production course
Assessment of a COVID-induced shift in the evolution of a beef cattle production course Open
This study investigated student (n = 272) exam grades and group project peer evaluations in a senior-level beef cattle management course during semesters of COVID-imposed transitional instructional delivery methods across the Fall 2019 to …
View article: Investigation of Reciprocal Cross Effects in F2 Nellore–Angus Calves
Investigation of Reciprocal Cross Effects in F2 Nellore–Angus Calves Open
The objectives of this study were to analyze calf performance traits and sex ratio frequencies in reciprocal Bos indicus–Bos taurus F2 Nellore–Angus calves (n = 539). The F2 calves were produced using reciprocal Angus-sired (AN) and Nellor…
View article: Differential Expression of MicroRNAs in Dark-Cutting Meat from Beef Carcasses
Differential Expression of MicroRNAs in Dark-Cutting Meat from Beef Carcasses Open
“Dark-cutting” meat in beef carcasses can result from conditions such as long-term stress and depleted glycogen stores, but some aspects of the physiological mechanisms that cause dark-cutting phenotypes remain poorly understood. Certain r…
View article: Evaluation of Post-weaning Efficiency in Nellore-Angus Crossbred Steers through Model Predicted Residual Consumption
Evaluation of Post-weaning Efficiency in Nellore-Angus Crossbred Steers through Model Predicted Residual Consumption Open
The objective of this work was to evaluate efficiency traits of Nellore-Angus crossbred steers (n = 349) on feed. Steers were fed a grain-based diet beginning at approximately 12 months of age for an average of 140 days. Contemporary group…
View article: Skeletal Muscle Expression of Actinin-3 (ACTN3) in Relation to Feed Efficiency Phenotype of F2Bos indicus - Bos taurus Steers
Skeletal Muscle Expression of Actinin-3 (ACTN3) in Relation to Feed Efficiency Phenotype of F2Bos indicus - Bos taurus Steers Open
In this study, actinin-3 ( ACTN3 ) gene expression was investigated in relation to the feed efficiency phenotype in Bos indicus - Bos taurus crossbred steers. A measure of relative feed efficiency based on residual feed intake relative to …
View article: 494 Walk the Talk – Teaching Is Still Teaching – Just Expanding Your Tool Box
494 Walk the Talk – Teaching Is Still Teaching – Just Expanding Your Tool Box Open
Beef Cattle Production & Management (ANSC 406) is a Texas A&M University “Communications” course and an elective in the undergraduate Animal Science curriculum. This course (3 hr lecture, 2 hr lab) is taught in Fall, Spring, and Summer sem…
View article: Effects of Multivalent BRD Vaccine Treatment and Temperament on Performance and Feeding Behavior Responses to a BVDV1b Challenge in Beef Steers
Effects of Multivalent BRD Vaccine Treatment and Temperament on Performance and Feeding Behavior Responses to a BVDV1b Challenge in Beef Steers Open
This study examined the effects of multivalent respiratory vaccine treatment (VT) and animal temperament classification on feeding behavior traits, feed intake and animal performance in response to a bovine viral diarrhea virus (BVDV) chal…
View article: Distributional characterizations and testing for differences of relatedness and inbreeding of a subpopulation of American Hereford bulls
Distributional characterizations and testing for differences of relatedness and inbreeding of a subpopulation of American Hereford bulls Open
Beta distributions are characterized by two determining parameters and a parameter space from 0 to 1, and may be useful for examining population genetic parameters such as the relationship or inbreeding coefficients. Often subpopulations e…
View article: 320 Carcass characteristics of Bos indicus-Bos taurus steers following BVDV type 1b challenge
320 Carcass characteristics of Bos indicus-Bos taurus steers following BVDV type 1b challenge Open
Bovine Viral Diarrhea virus (BVDV), is a component of bovine respiratory disease (BRD) worldwide. Documentation of animal genetic influences and performance variability specific to BVDV challenge is limited. This study evaluated individual…
View article: 423 What’s the beef with communication? Investigating communication styles of advanced animal science students
423 What’s the beef with communication? Investigating communication styles of advanced animal science students Open
Effective science communication skills are vital to the animal science industry for translating science-focused information to lay audiences. To address the American Society of Animal Science’s (2017) third core principle of communicating …
View article: Random regression of Hereford percentage intramuscular fat on geographical coordinates
Random regression of Hereford percentage intramuscular fat on geographical coordinates Open
Accounting for genotype–environment interactions may improve genetic prediction and parameter estimation. The objective was to use random regression analyses to estimate variances and thereby heritability for intramuscular fat (IMF) across…
View article: Transcriptomic analysis among sub-clinically ill cattle following Bovine Respiratory Disease vaccine protocol and challenge with Bovine Viral Diarrhea Virus
Transcriptomic analysis among sub-clinically ill cattle following Bovine Respiratory Disease vaccine protocol and challenge with Bovine Viral Diarrhea Virus Open
Background: Bovine viral diarrhea (BVD) is a widespread immunosuppressive disease of cattle. Infection with bovine viral diarrhea virus (BVDV) can also be sub-clinical and persistent in herds, leading to high economic impact to cattle prod…
View article: Effects of temperament at feedlot arrival and breed type on growth efficiency, feeding behavior, and carcass value in finishing heifers
Effects of temperament at feedlot arrival and breed type on growth efficiency, feeding behavior, and carcass value in finishing heifers Open
Objectives were to evaluate the effects of temperament at feedlot arrival and breed type on productivity, feed efficiency, feeding behavior, and carcass quality traits in finishing beef heifers, and to examine interactions between temperam…
View article: Ultrasonographic measurements in first trimester concepti identify predictors of birth weight and postnatal development in cattle1
Ultrasonographic measurements in first trimester concepti identify predictors of birth weight and postnatal development in cattle1 Open
The placenta is a major driver of prenatal growth and involved in programming of postnatal performance. We therefore determined placental and embryo-fetal ultrasonographic parameters in early pregnancy and their relationships with birth we…
View article: Evaluation of F1 cows sired by Brahman, Boran, and Tuli bulls for reproductive, maternal, and cow longevity traits
Evaluation of F1 cows sired by Brahman, Boran, and Tuli bulls for reproductive, maternal, and cow longevity traits Open
This study evaluated reproductive, maternal performance, and longevity traits of 143 F1 cows sired by Brahman (Br), Boran (Bo), or Tuli (T) bulls from Angus or Hereford cows from 1994 to 2011. Cow traits were measured at 7 yr of age in 199…
View article: 4 Heritability Estimations for Intramuscular Fat in Hereford Cattle Using Random Regressions.
4 Heritability Estimations for Intramuscular Fat in Hereford Cattle Using Random Regressions. Open
Random regressions make genetic predictions and parameter estimates possible across environmental gradients, which might possibly allow more accurate identification and beneficial use of breeding animals in specific environments. The objec…
View article: Feed Intake and Weight Changes in Bos indicus-Bos taurus Crossbred Steers Following Bovine Viral Diarrhea Virus Type 1b Challenge Under Production Conditions
Feed Intake and Weight Changes in Bos indicus-Bos taurus Crossbred Steers Following Bovine Viral Diarrhea Virus Type 1b Challenge Under Production Conditions Open
Bovine viral diarrhea virus (BVDV) has major impacts on beef cattle production worldwide, but the understanding of host animal genetic influence on illness is limited. This study evaluated rectal temperature, weight change and feed intake …
View article: 178 Black Hereford genetic parameters and predictions for calf traits with alternate modelling strategies
178 Black Hereford genetic parameters and predictions for calf traits with alternate modelling strategies Open
Large breed databases allow use of multi-trait models for genetic parameter estimations (GE), genetic predictions (GR), and increased estimation accuracy. However, large databases are not always available to apply more complex models than …
View article: Association of udder traits with single nucleotide polymorphisms in crossbred Bos indicus–Bos taurus cows1,2
Association of udder traits with single nucleotide polymorphisms in crossbred Bos indicus–Bos taurus cows1,2 Open
The size, support, and health of udders limit the productive life of beef cows, especially those with background, because, in general, such cows have a reputation for problems with udders. Genomic association studies of bovine udder traits…