Animal Sciences: Recent submissions
Now showing items 61-80 of 106
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Temperament Evaluation in Beef Cattle: Understanding Evaluator Bias Within Subjective Measurements of Docility Score, Temperament Score, and Qualitative Behavior Assessment
(North Dakota State University, 2016)An experiment was conducted to quantify evaluator bias and determine the impacts bias may have on genetic evaluations. Three subjective evaluation methods were recorded (n = 806) at weaning, including docility score (DS; ... -
Effects of Implanting Strategy and Zilpaterol Hydrochloride on the Calpain Proteolytic System in Sectioned Beef Steaks for Two Time Periods
(North Dakota State University, 2016)The objective of this study was to evaluate the impact of an anabolic implant and its use with the beta-adrenergic agonist zilpaterol hydrochloride (ZH) the calpain proteolytic system activity across specific areas of the ... -
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 ... -
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 ... -
Effects of Grain Type and Oil Concentration of Corn Dried Distillers Grains Plus Solubles of Digestion, Finishing Performance, and Carcass Quality
(North Dakota State University, 2016)Changes in ethanol processing have resulted in a reduction of oil in the final coproduct, DDGS, available as a feedstuff. Lowering the oil concentration can decrease the total energy in the diet and, therefore, could affect ... -
Does Beef Inclusion in a Modern American Diet Influence Risk Factors for Obesity-related Metabolic Disorders via a Swine Biomedical Model
(North Dakota State University, 2016)Using swine as a model for humans, this study was conducted to determine if replacing the sugar present in the average American diet (SUG) with ground beef (GB) would alter developmental body composition, onset of puberty, ... -
Effects of Protein Supplement During the Last Third of Pregnancy on Blood Flow to the Mammary Gland in Beef Cows
(North Dakota State University, 2016)Calves born to cows fed a protein supplement during late pregnancy have greater production characteristics compared to calves from cows not supplemented, despite similar birth weights. Our hypothesis was that cows receiving ... -
The Exploration of a Four-Platform Standing Scale in the Application of Measuring Temperament in Beef Cattle
(North Dakota State University, 2016)To assess the validity of a four-platform standing scale (FPSS) to measure cattle temperament, calves were evaluated at weaning age with an objective four-platform standing scale (FPSS) and subjective methods of docility ... -
Characteristics of Health Parameters and the Digital Cushion in Horses
(North Dakota State University, 2015)Studies examining lameness conditions and health concerns for horse owners are important for education and future research. To investigate this, a survey and two studies were conducted. For the survey, a total of 152 ... -
Factors Influencing the Passive, Innate, and Adaptive Immune System and Their Effects in Beef Cattle
(North Dakota State University, 2015)To investigate the factors influencing the passive, innate, and adaptive immune system and their effects in beef cattle, three experiments (exp.) were completed. Results from Exp. 1 indicate that there is some influence ... -
Role of Lipotropic (Methyl) Nutrients on Mammary Development and Carcinogenesis in Female Rat Offspring
(North Dakota State University, 2015)Lipotropes (methionine, choline, folate, and vitamin B12) play a key role in one-carbon metabolism. We hypothesized that maternal methyl (lipotropic) nutrients would induce epigenetic modification that influences mammary ... -
Supplementation of Corn Dried Distiller's Grains Plus Solubles to Gestating Beef Cows Fed Low-Quality Forage
(North Dakota State University, 2015)To investigate the effects of corn dried distiller’s grains plus solubles (DDGS) supplementation to cows during late gestation, 27 multiparous beef cows were divided randomly into 2 treatment groups (CON; n = 15; SUP = ... -
Management Considerations for Successful Technology Implementation in Beef Production Systems
(North Dakota State University, 2015)Two experiments were conducted to evaluate management strategies that foster successful implementation of technology in beef production systems. In experiment 1, cow reproductive performance, BW, and serum concentrations ... -
Arginine Supplementation Strategies during Gestation: Impacts on Dams and Offspring
(North Dakota State University, 2015)We hypothesize rumen-protected arginine supplementation during gestation will mitigate deleterious offspring effects caused by undernutrition. Experiment 1: non-pregnant ewes were supplemented with rumen-protected arginine ... -
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 ... -
Evaluation of Glycated Albumin as a Metabolic Marker for Marbling in Commercial Feeder Cattle
(North Dakota State University, 2015)This study was conducted to determine if glycated albumin is associated with marbling in beef cattle. Crossbred steers (n=113) were assigned randomly to different treatments to determine the effects of feeding strategies ... -
Effects of Maternal Nutrition During Gestation on Viscera Energy Use in Ruminant Dams and Offspring and Hypothalamic Neurohormone Content in the Offspring
(North Dakota State University, 2015)The extensive use of grazing systems for ruminant livestock and the high variation in forage quality throughout the year have important impacts on production. Changes in feed quality and availability cause alteration in ... -
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 ... -
Influence of Maternal Nutrient Intake on Placental Vascular Function in Pregnant Beef Cows
(North Dakota State University, 2014)Two experiments investigating impacts of maternal nutrition in beef cows were conducted; 1) to test the impact of duration of global nutrient restriction and subsequent realimentation throughout gestation on placentome ... -
Impacts of Supplemental Arginine on Ewe Reproductive Performance
(North Dakota State University, 2014)The objective of this study was to determine the effects of injectable and oral arginine (Arg) supplementation provided 14 d post-breeding on reproductive performance of fall lambing ewes. Upon estrus detection (d 0) ewes ...