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Effects of conjugated linoleic acids on PGE₂, PGF₂α and progesterone production by bovine luteal cells in vitro

Creator:: May, Katherine C. P.
Abstract:: Feeding conjugated linoleic acids (CLA) improves reproductive performance in dairy cows; however, the molecular mechanisms by which CLA improves reproduction are not well understood. Therefore, we evaluated whether the CLA isomers, trans-10, cis-12 CLA and cis-9, trans-11 CLA altered synthesis of steroidogenic hormones in bovine luteal cells by measuring concentrations...
Resource Type:: Masters Thesis
Full Text:: : Review of the Literature………………………………………….....6 Reproductive Performance in Dairy Cattle………………………………..6

Perennial ryegrass nonstructural carbohydrates in dairy cattle nutrition

Creator:: Buyserie, Annette C.
Abstract:: Ruminal microorganisms require nitrogen and energy for microbial crude protein (MCP) synthesis. High-quality grass provides an excess of readily available proteins relative to available carbohydrates which reduces the conversion efficiency of grass protein to MCP. Nonstructural carbohydrates (NSC) are the primary source of readily available energy. Objectives of trial 1...
Resource Type:: Masters Thesis

Improving the nutritional and textural properties of dairy products by feeding Holstein cows processed flaxseed

Creator:: Oeffner, Scott P.
Abstract:: There is growing public concern about the high proportion of saturated fatty acids in milk fat; however, feed intake, energy partitioning toward milk synthesis, and milk fat concentrations can decrease when cows are fed high concentrations of unsaturated lipids. The objective of this study was to identify the optimal rate...
Resource Type:: Masters Thesis
Full Text:: . Title: Improving the Nutritional and Textural Properties of Dairy Products by Feeding Holstein Cows

Effects of prostaglandin F2alpha on neutrophil populations, uterine health and reproductive performance in dairy cows, Effects of prostaglandin F₂α on neutrophil populations, uterine health and reproductive performance in dairy cows

Creator:: Lulay, Adrienne McCracken
Abstract:: Incidences of uterine infections in dairy cattle are high between parturition and Day 21 postpartum. Dairy cows with uterine infections are at risk for prolonged periods of days open and multiple services before becoming pregnant. Neutrophils are the first wave of immune system defense against uterine contamination. Neutrophil function seems...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________ Alfred R. Menino, Jr Incidences of uterine infections in dairy cattle are high between

Assessing the phosphorus and potassium balances in Oregon's dairies

Creator:: Higgs, Kathryn N.
Abstract:: A field study was conducted to assess phosphorus (P) and potassium (K) concentrations of both lactating and dry cow diets on Oregon's dairies. Thirty-seven dairy farms, located in western Oregon, were grouped according to geographic region, valley (V) or coast (C), and herd size, small (S) or large (L). Farms...
Resource Type:: Masters Thesis
Full Text:: P Requirements for Dairy Cattle ...................................... 8 Phosphorus requirements

Salmonella and other Enterobacteriaceae in dairy cow feed ingredients and their antimicrobial resistance

Creator:: Kidd, Riam S.
Abstract:: Antimicrobial resistant Enterobacteriaceae might be introduced into dairy cows through the consumption of feeds and the microbes may eventually enter the human food supply. Thirty-two farms were selected at random from 43 commodity feeding dairy farms. Of the 32 farms selected, 12 farms agreed to participate in the study. In...
Resource Type:: Masters Thesis
Full Text:: Salmonella and other Enterobacteriaceae in Dairy Cow Feed

Quantifying the fertilizer value of algal meal : an evaluation of an integrated dairy-anaerobic digester-algae production facility

Creator:: Andrews, Shannon B.
Abstract:: Algae have shown great potential as a source for renewable fuels. However, current production schemes have not been able to prove a sustainable energy return on investment due in part to the high costs of nutrient addition and the energy required for drying the biomass. Integrated algae-dairy production systems have...
Resource Type:: Masters Thesis
Full Text:: , and nitrous oxide from dairy cattle housing and manure management systems. Journal of Environmental

The Effects of Prostaglandin F2α on Reproductive Performance in the Postpartum Dairy Cow and the Mechanism Behind its Benefits

Creator:: Younger, Kathryn Genevieve
Abstract:: During the beginning of the postpartum period, 80 to 100% of lactating dairy cows have bacterial contamination within their uteri. Presence of uterine bacteria may contribute to increased number of days open and services per conception within these cows. Expulsion of uterine contamination is crucial for uterine involution and reproductive...
Resource Type:: Masters Thesis
Full Text:: ramifications, and uterine infection is one of the most expensive impediments of conception for dairy cattle

Reconstruction and Validation of the Integrated Diagnostic SystEm for DAiry Cow WeLfare (IDEAL) to Assess Real-time Animal Well-being on Confined and Grazing Dairy Farms

Creator:: Krueger, Angela K.
Abstract:: Animal welfare is an essential component of agricultural production and animal use in teaching and research. However, defining animal welfare is intrinsically difficult because of how history and societal values and perceptions have shaped the term. Animal welfare encompasses three main ideas: physical well-being, normal affective/emotional states, and the ability...
Resource Type:: Masters Thesis
Full Text:: the animal to properly function in its environment even while stressors are present. Dairy cattle

ScholarsArchive@OSU

Effects of conjugated linoleic acids on PGE₂, PGF₂α and progesterone production by bovine luteal cells in vitro

Perennial ryegrass nonstructural carbohydrates in dairy cattle nutrition

Improving the nutritional and textural properties of dairy products by feeding Holstein cows processed flaxseed

Effects of prostaglandin F2alpha on neutrophil populations, uterine health and reproductive performance in dairy cows, Effects of prostaglandin F₂α on neutrophil populations, uterine health and reproductive performance in dairy cows

Assessing the phosphorus and potassium balances in Oregon's dairies

Salmonella and other Enterobacteriaceae in dairy cow feed ingredients and their antimicrobial resistance

Quantifying the fertilizer value of algal meal : an evaluation of an integrated dairy-anaerobic digester-algae production facility

The Effects of Prostaglandin F2α on Reproductive Performance in the Postpartum Dairy Cow and the Mechanism Behind its Benefits

Reconstruction and Validation of the Integrated Diagnostic SystEm for DAiry Cow WeLfare (IDEAL) to Assess Real-time Animal Well-being on Confined and Grazing Dairy Farms

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