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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

The role of the plasminogen activator system in the etiology of ovarian follicular cysts in dairy cattle

Creator:: McNeel, Anthony Kent
Abstract:: Cystic ovarian disease (COD) is an anovulatory condition in cattle that afflicts between 6-18% of all dairy cows in the US. Ovulation is dependent on the plasminogen activator (PA) family of proteases and protease inhibitor for proteolysis, culminating in follicular rupture. Failure of the follicle to ovulate suggests an aberration...
Resource Type:: Dissertation
Full Text:: Ovarian Follicular Cysts in Dairy Cattle Abstract approved: Alfred R. Menino, Jr. Abstract

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

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

Antioxidant Effects of Blackberry Pomace on the Health of Transition Dairy Cows

Creator:: Estenson, Kaelyn A.
Abstract:: Blackberry pomace (BBP), a byproduct from juice processing, is often disposed of in landfills. We propose BBP as an antioxidant-rich feed supplement for transition dairy cows. To explore the effects of BBP on antioxidant status, 24 multiparous dairy cows (5 Holstein and 19 Jersey) were assigned randomly to one of...
Resource Type:: Honors College Thesis
Full Text:: having between 350 and 400 head of cattle on 300 acres (Oregon Dairy and Nutrition Council, 2017

Dairy Cattle Nutrition and its Effect on Production, Milk, and Human Health

Creator:: Swanson, Katherine L.
Abstract:: As the world population continues to grow we must look for smarter and more sustainable ways to feed everyone. Milk is the first food humans consume and is a good source of protein, fat, and carbohydrates. The following studies sought to determine the effect of feeding blackberry pomace as a...
Resource Type:: Dissertation
Full Text:: : Dairy Cattle Nutrition and its Effect on Production, Milk, and Human Health. Abstract

ScholarsArchive@OSU

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

The role of the plasminogen activator system in the etiology of ovarian follicular cysts in dairy cattle

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

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

Antioxidant Effects of Blackberry Pomace on the Health of Transition Dairy Cows

Dairy Cattle Nutrition and its Effect on Production, Milk, and Human Health

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