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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 63 for “"forage quality"”.
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Forage Quality of "Matua" Prairie Grass
Research on the nutritive quality of Matua grass (Bromus willdenowii) is limited in south central Kentucky-Due to the hot summers, mild winters and a 200-day long growing season in Kentucky, herbage quality as well as management practices may differ from those reported in research from other …
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Barley growth, physiology, and forage quality as influenced by defoliation and water stress
… L.) after defoliation and their effects on forage-quality characteristics is needed. The objectives of this study were to investigate defoliation and water deficit stress effects on regrowth, physiology and forage quality characteristics of four barley cultivars known to differ in response …
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Three Overlooked Issues: Water Quality, Forage Quality, and Forage Blends Impacting the Feed Efficiency of Dairy Cows
… the study suggested that the source and nutrient quality of water can affect rate of ruminal fermentation. Thus, use of real farm water being offered to the cow to conduct in vitro gas production measurements may accurately predict the ruminal fermentation, digestibility and total gas production. …
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Cytology, Mode of Reproduction, and Forage Quality of Selected Species of Brachiaria Griseb. (Chromosome Numbers, Fiber Structure, Pachytene Analysis, Apomixis)
The genus Brachiaria includes several species of economic importance as pastures throughout the tropics. Most of the species investigated are polyploids of the basic chromosome number x = 9. Apomixis is the predominant mode of reproduction within the genus. To define chromosome behavior during …
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A study assessing forage quality and desert bighorn sheep (Ovis canadensis nelsoni) diet in central Nevada using microhistology and molecular analysis
… of desert bighorn sheep health is diet and the quality of forage consumed. Using data collected in the Clan Alpine mountain range (a range that supports a population of healthy desert bighorn sheep in central Nevada), this research attempted to first, determine quality of collected forages …
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Cover Crop Systems Impact on Biomass Production, Carbon-to-Nitrogen Ratio, Forage Quality, and Soil Health Indices in a Semiarid Environment.
… greater above- and below-ground biomass and forage nutritive value and lower tissue carbon-to-nitrogen (C/N) ratios. We also hypothesize that these characteristics will promote greater soil organic carbon, total nitrogen, and microbial biomass and diversity compared to cover crop …
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Management and Livestock Performance of Alfalfa-Tall Fescue Mixed Stands
… alfalfa (Medicago sativa L.) have many desirable forage attributes, are grown extensively throughout the USA, and combined form a productive pasture mixture. The objective of this research was to develop recommended management practices for alfalfa-tall fescue mixtures and compare livestock …
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The Role of Plant Chemical Defenses in The Nutritional Ecology of Voles
Although forage quality influences the individual performance, food preferences, habitat selection, and population density of microtine rodents (voles and lemmings), the impact of secondary plant compounds on forage quality is largely unknown. This thesis reports results of studies conducted to …
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Interactive effects of fire and grazing on soil and forage nitrogen dynamics in a tallgrass prairie
… on soil nitrogen (N) dynamics and links to forage quality across heterogeneous landscapes remain incompletely resolved. This thesis examined how fire frequency, grazing, and landscape position interact to regulate N cycling, N retention, and plant–soil feedbacks in tallgrass prairie systems. …
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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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Establishment of native plant species for livestock forage in silvopasture systems
… and environmental stewardship into existing forage-livestock systems is growing in popularity. This project takes a novel approach incorporating native rather than introduced forage species. Our objectives were to: determine success of establishment of native cool and warm season grasses, and …
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Annual forage cropping-systems for midwestern ruminant livestock production
<p>Annual forage cropping systems are a vital aspect of livestock forage production. One area where this production system can be enhanced is the integration of novel annual forages into conventional cropping systems. Two separate projects were conducted to investigate alternative forage options in …
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Quantifying the impacts of ozone pollution on the sustainability of pasture
… declining production and yield, and impacts on forage quality. Ozone impacts on nodulation and nitrogen (N)-fixation in legumes have not extensively been investigated, but could have important consequences for pasture sustainability, with predicted reductions in the root nodule biomass of …
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Influence of seaweed extract and other plant growth regulators on growth, persistence, and quality of tall fescue and their potential to alleviate tall fescue toxicity to livestock
… extract and other plant growth regulators on forage quality and persistence of endophyte-infected (Acremonium coenophialum Morgan-Jones and Garns) and endophyte-free tall fescue (Festuca arundinacea Schreb.). The influence of plant growth regulators on forage quality of endophyte-infected tall …
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Understanding the complex relationships between climate, vegetation, and foraging behavior of a climate-sensitive alpine mammal in order to explain patterns of persistence
… but understanding the links between climate, forage quality, and foraging behavior is necessary to identify the mediating mechanism. Pika foraging pressure help shape the local plant community, which can confound modeling efforts and must be considered when evaluating the influence of …
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Management of summer grazed alfalfa
… L. cv. Arc) productivity, regrowth, and quality as affected by summer grazing management and K fertilization (560 kg K/ha) was investigated with sheep. Sheep grazed alfalfa for 2-, 4-, or 6-weeks following a 2 July hay cut when regrowth was 450 kg/ha dry matter; beginning in early bud for …
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Growing crops for biofuel and forage while conserving soil and water
… assess the impacts of growing WSG on biomass and forage production and quality and c) determine the most adaptable WSG species to dryland conditions. A number of dedicated energy crops and their performance across three different moisture regimes in Kansas were studied. Biomass yield, soil …
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Nutritional status of beef cows grazing reclaimed strip mined pastures
… Virginia. Blood samples, esophageal fistula forage samples and hand plucked forage samples were taken in each trial. An external marker, Ytterbium, and an internal marker, indigestible neutral detergent fiber (INDF) were used to estimate organic matter intake, fecal output and digestibility. …
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Combined Roles of Glandular-haired Alfalfa and Natural Enemies in Alfalfa Pest Managment in Virginia
… Both varieties frequently had similar yields and forage quality. In general, the glandular-haired variety did not outperform the standard variety. Results also indicated that insecticide application did not always provide the expected benefits of higher yields and forage quality, despite reducing …
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