Browsing Animal Sciences Doctoral Work by Title
Now showing items 11-29 of 29
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Factors Affecting Testicular Growth and Development in the Beef Bull
(North Dakota State University, 2019)At present no single parameter can predict potential daily sperm production (DSP) in bulls. Sertoli cells (SC) are responsible for nourishing and providing physical support to germ cells (GC) throughout spermatogenesis. ... -
Genetic Markers, Cattle Disposition, and Stress Relative to Variations in Beef Tenderness
(North Dakota State University, 2012)The objective of this research was to evaluate the efficacy of genetic markers, disposition, and animal stress on variations in beef tenderness. Warner-Bratzler shear force (WBSF) values on 570 mixed breed heifers and ... -
Genetic Predictions Using Subjective Methods of Beef Cattle Temperament Evaluation, Genetic Association Between Beef Cattle Temperament and Production Traits, and Influence of Sire and Dam Temperament on Calf Performance
(North Dakota State University, 2021)Beef cattle temperament is not only important to handler safety and animal welfare but also found to be related to productivity and thereby, considered an economically important trait. Constraints to improve cattle temperament ... -
The Impact of Age and Level of Nutrient Consumption on Pancreatic Insulin Production in Ruminants
(North Dakota State University, 2016)Video summarizing Ph.D. dissertation for a non-specialist audience. -
The Impact of Digestive Enzymes in the Ruminant Animal
(North Dakota State University, 2016)Understanding the enzymatic activity in ruminant digestive systems is essential for securing adequate growth, reproduction and overall metabolism. In order to evaluate the impact of various nutritional sources and dietary ... -
The Impact of Reproductive Technologies on Beef Cattle and Management
(North Dakota State University, 2016)Two experiments were conducted to evaluate producer management decisions that may impact beef cattle reproductive efficiency. The over-arching hypothesis was that critical breeding management decisions would positively ... -
Impacts of Beef Cow Nutrition on Conceptus Development
(North Dakota State University, 2013)Two experiments were conducted to determine the effect of maternal nutrient restriction followed by realimentation during early to mid-gestation on uterine blood flow (BF), maternal performance, and conceptus development ... -
Independent Methods to Improve Meat Quality Including Genetic Technologies, Modified Processing, and Growth Promotants in Beef
(North Dakota State University, 2015)Three independent studies were done to investigate how genetic factors, carcass management, and exogenous growth promotant programs influence meat quality attributes, palatability, and protein expression in beef. The first ... -
Influence of Cut, Cooking Method, and Post-Mortem Aging on Beef Palatability
(North Dakota State University, 2013)The objectives of these studies were to determine the effects of cut, cooking method, and postmortem aging on improving consumers' perception of beef. Consumers evaluated bottom round, top sirloin, ribeye, and a value cut ... -
Maternal Nutrition, One-Carbon Metabolites, and Programming of Fetal Development During Early Gestation
(North Dakota State University, 2019)Crossbred Angus heifers (n = 14) were bred via AI, assigned to nutritional treatment (CON = 100% of requirements for 0.45 kg/d gain and RES = 60% of CON) and ovariohysterectomized on d 50 of gestation. Fetal liver, muscle ... -
Maternal Nutritional Plane and Endogenous Retroviral Gene Elements, Pregnancy Hormones, and Placental Vascularity and Angiogenic Factors during the Establishment of Pregnancy in Beef Cattle
(North Dakota State University, 2016)In order to meet the projected food demands by 2050, animal agriculture must increase production of animal products on the same or decreased land area through increased efficiency. Early gestation is one area to increase ... -
Perceptions of Modern Meat-Animal Production from Consumers Two to Three Generations Removed from the Farm
(North Dakota State University, 2019)A consumer is defined as a person who purchases goods and services for personal use or a person or thing that eats or uses something (Merriam-Webster, 2019). Consumers either want or need to eat meat, whether it is for ... -
Reproductive and Nutritional Impacts of Dried Distiller's Grains with Solubles on Growing Rams and Feedlot Lambs
(North Dakota State University, 2017)Byproduct supplementation in livestock rations is viable and can lead to increased returns to producers. Increasing the inclusion of dried distiller’s grains with solubles (DDGS) was hypothesized to increase growth performance ... -
The Role of Maternal Protein Intake During Late Gestation on Placental Vascular Function
(North Dakota State University, 2013)Global nutrient restriction or excess can influence umbilical hemodynamics in sheep fetuses (Chapter 2). We hypothesized that a specific component of the diet, namely maternal metabolizable protein (MP), would alter placental ... -
Supplemental Leucine in Milk Replacer Fed to Neonatal Calves and Lambs: Effects on Growth, Development, and Metabolism
(North Dakota State University, 2021)Maximizing growth during the neonatal period in preruminants can enhance long-term growth and productivity, increasing producer profits and input efficiency. Meeting the requirements for growth can be achieved through ... -
Supplementing Metabolizable Protein to Ewes during Late Gestation: Effects on Ewe and Offspring Performance
(North Dakota State University, 2013)We hypothesized that MP intake at or above requirements during late gestation would improve dam and offspring performance. In year 1, ewes received one of three isocaloric dietary treatments during late gestation: 60MP1: ... -
Understanding Consumer Acceptance of Multiple Red Meat Products and Perceptions of the American Meat Science Association’s Intercollegiate Meat Judging Program Benefits From Participants
(North Dakota State University, 2022)Per capita consumption of red meat products totaled 67 kg in 2017. Given the popularity of meat, it is important for meat scientists to monitor consumers acceptance of red meat products. Consumer acceptance of red meat ... -
Understanding the Equine Distal Limb
(North Dakota State University, 2019)Studies examining health of the distal limb and lameness conditions are important for education and future research. It is hypothesized that changes to the external hoof would result in alterations to blood flow throughout ... -
Understanding the Relationship Between Weather Variables, Dry Matter Intake, and Average Daily Gain of Beef Cattle
(North Dakota State University, 2021)The current National Academies of Sciences, Engineering and Medicine (NASEM) dry matter intake (DMI) prediction models are inadequate for DMI prediction of beef cattle in the Northern Great Plains. Four studies were conducted ...