Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 84 for “"animal performance"”.
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Live animal performance and carcass characteristics of bulls versus steers
… beef is a goal that involves many aspects of animal production including breeding, feeding and management. The trend toward leaner beef carcasses and more efficient feedlot performance has focused atterition on the effect of age at the time of castration on feedlot efficiency and carcass …
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Exploring producer perceptions for cattle price and animal performance in the stocker industry
… deepen our understanding of how cattle price and animal performance variability is viewed and approached by stocker cattle producers in the United States. Another part of this research focuses on what characteristics may be drivers of whether producers choose to practice different risk management …
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The effect of perennial grass species on forage growth and quality, etiolated growth, animal performance and economics
… species for forage yield and quality, steer performance and grazing capacity, animal intake, plant energy reserves and economic return under grazed conditions. In 1999, two 0.8 ha replicates each of ‘Paddock’ meadow bromegrass (Bromus ripariusRehm.), ‘Carlton’ smooth bromegrass (Bromus …
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Effects of Annual and Perennial Forage Systems on Forage Biomass and Quality, Grazing Animal Performance and Enteric Emissions, and System Economics
… respect to forage yield and quality, grazing animal performance, rumen fermentation, enteric methane production, and system economics. Forage systems included (1) CDC Austenson barley (Hordeum vulgare L.) + 4010 pea (Pisum sativum L.) + Winfred forage brassica (Brassica oleracea L.× Brassica …
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Effect of application of fluidized bed combustion residue to reclaimed mine pastures on forage yield, composition, animal performance and mineral status
… samples collected at 14-d intervals and all animals were sacrificed for tissue sampling at the end of the 114-d trial. Amendment with FBCR or limestone increased soil pH (P < .05) above control levels. Forage yield and steer gain were not significantly affected by treatment. Forage samples …
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Effects of supplementing beef cows grazing forages with wheat-based dried distillers’ grains with solubles on animal performance, forage intake & rumen metabolism
… distillers’ grains with solubles (DDGS) on cow performance, forage utilization, and production costs. In the first two experiments, 48 dry, pregnant Black Angus cows (mean BW±SD; 598.2±4.2 kg) stratified by body weight (BW) and days pregnant were allocated randomly to one of three replicated …
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Effect of rumen-protected methionine on placenta metabolism, animal performance, and immune-metabolism of dairy cows during the periparturient and early lactation periods
… the effects of enhancing methionine supply on performance, immunometabolic responses, and utero-placental metabolism of dairy cows. Sixty multiparous Holstein cows were used in a block design and assigned to a control diet or the control plus rumen-protected methionine (MET; Mepron, Evonik …
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Assessing the potential of mixed grazing goats with beef cattle to improve animal performance and increase the utilization of marginal pasturelands in the Appalachian coal region
… composition, relative plant abundance, and animal performance. The three treatments included an ungrazed control, cattle grazing alone, and mixed grazing goats with cattle. Experimental design was a randomized complete block design with two replicates for the control and three replicates for …
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Investigation of the Role of Amide I to Amide II Ratio and Alpha Helix to Beta Sheet Ratio of Faba Bean Seeds in the Determination of Microbial Protein Synthesis and Animal Performance and Metabolism in Ruminant Livestock Systems.
… of protein and starch to improve the production performance of high lactating dairy cows.
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Branched Chain Fatty Acid Additions to Diets Containing Corn Crop Residues
Experiments were initiated to measure animal performance, digestibility and metabolism characteristics associated with feeding corn crop residues supplemented with branched-chain fatty acids, urea, molasses, corn steep liquor, soybean meal and corn gluten meal.
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Program Feeding Strategies for Reducing Costs of Wintering Beef Cows
… months. This research focused on evaluating the performance, financial, and environmental impacts of using producer adaptable feeding systems and feedstuffs that are readily available in the region, to provide alternatives to traditional hay based winter feeding programs. The impacts of feeding …
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Determining the Nutritional Status of Mature Beef Cows
Improved prediction of forage quality and cow performance may enhance the nutritional management of beef cows. In two 12 mo trials, mature beef cows (n=136) grazing tall fescue pastures were used to compare estimates of forage quality and animal performance. Forage quality was estimated by …
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Preservative Effects of Covering and Propionic Acid on Alfalfa Haylage in Bunker Silos
… temperature of the haylage were monitored and animal growth was measured with 16 Holstein heifers. Covered haylage was superior to treated haylage in quality as measured by chemical analyses and animal performance. Propionic acid lowered ensiling temperature to a lesser extent than covering. …
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Evaluating native warm-season grass and wildflower mixtures for beef cattle production in the Mid-Atlantic
… NWSG-WF pasture enhancement could improve animal performance in TF grazing systems. The small plot experiments experienced extreme weed competition in the establishment year, although plots with higher NWSG content had fewer weeds over time. Floral production was comparable across …
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Hair Sheep Production in Temperate, Deciduous Appalachian Silvopastures
… temperate regions, but little data comparing animal performance from systems with different deciduous tree species are available. Forage and animal performance was compared from open systems (i.e., no trees) with that from silvopastures containing 13-yr-old honeylocust (Gleditsia triacanthos) …
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Feeding Behavior of Self-Fed Lambs
… (.595 or .334 sq m per lamb) did not influence animal gain, feed intake, waste feed associated with the feeder, side(s) (right and/or left) of the feeder trough used by the lambs and mean feeder usage. Feeder usage averaged 5.8, 9.1 and 10.2 hours in a 24-hour day for lambs fed a pelleted 20% …
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Effect of Zilpaterol hydrochloride and steroid implantation on yearling steer feedlot performance, carcass characteristics, and skeletal muscle gene expression
… for use in finishing cattle to improve growth performance and increase lean tissue accumulation. Little is known about the combined effects of ZH with anabolic steroid hormone implants. There is also little published data on the effect these growth promotants have on genes that play a role in …
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Effect of Grazing Pressure on Cattle Grazing Cool Season Annual Forages
… density of forage, dry matter intake, and animal performance. A myriad of grazing management strategies have been developed utilizing animal behavior to allow more efficient use of forage resources. Many management strategies based on manipulation of grazing behavior are simple and cost …
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