Index Catalog // ScholarsArchive@OSU

In vitro hormonal and metabolic control of bovine mammary glucose 6-phosphate dehydrogenase activity

Creator:: Young, Allen Jack
Abstract:: Two studies were conducted to determine the in vitro metabolic and hormonal effects on glucose 6-phosphate dehydrogenase activity (G6PD) in bovine mammary explants. Study I was conducted to determine the effects of palmitoyl CoA (5 and 25 uM), acetate (1 and 10 mM), spermidine (0.4 mM) and putrescine (0.4 mM)...
Resource Type:: Dissertation
Full Text:: Gradut School Date thesis is presented June 9 1987 Typed by researcher for Allen J. Young

Transforming shrimp and crab waste into dairy heifer feed

Creator:: Evers, Dale J.
Abstract:: The goal of these experiments was to ensile combinations of shrimp or crab waste with perennial ryegrass straw and analyze it for silage quality and ruminal degradability. The rapid deterioration of seafood wastes required initial preservation prior to ensiling to minimize odor production and protein breakdown. Eight experiments were conducted...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Dale J. Evers for the degree of Master of Science in Animal Science presented on

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:: :_______________________________________________ Chad J. Mueller Feeding conjugated linoleic acids (CLA) improves reproductive

Identification of a mechanism underlying heritable subfertility in roosters homozygous for the rose comb allele

Creator:: McLean, Derek J.
Abstract:: The overall objective of this research was to define the cellular basis underlying heritable subfertility in roosters homozygous for the rose comb allele (R/R). Fertilization in the hen is preceded by the ascension of motile sperm through the vagina and sperm sequestration within sperm storage tubules (SST). The objective of...
Resource Type:: Dissertation
Full Text:: analysis of each experiment. Mr. Allen J. Feltmann assisted in semen collection and experiments performed

Implications of selenium status for various metabolic and performance parameters in beef cattle

Creator:: Drake, Daniel J.
Abstract:: Metabolic and performance parameters of beef calves were compared between Se supplemented (Se) and control (C) dam treatment groups from known Se deficient cattle. Four trials were conducted at three locations involving 50, 36, 25 and 39 experimental dam/calf pairs. Se supplementation was either two 30 gram oral boluses (90%...
Resource Type:: Dissertation
Full Text:: performance parameters in beef cattle AN ABSTRACT OF THE THESIS OF Daniel J. Drake for the degree of Doctor

Studies on luteinizing hormone and gonadal steroids in male and female llamas (Lama glama)

Creator:: Reed, Pamela J.
Abstract:: A series of studies was performed to more clearly evaluate gonadal function in llamas. Luteinizing hormone (LH) and progesterone (P₄) concentrations were compared following natural or hormone-induced ovulation. Luteal regression was evaluated following administration of the prostaglandin F₂α analog cloprostenol. The interaction of age, season and castration on testosterone (T)...
Resource Type:: Dissertation
Full Text:: and female llamas (Lama glama) AN ABSTRACT OF THE THESIS OF Pamela J. Reed for the degree of Doctor

Temporal effects of Dexamethasone on skeletal muscle protein metabolism in rabbits

Creator:: Yeh, Jan-ying
Abstract:: Glucocorticoids are growth-inhibiting steroids. They have been reported to reduce muscle growth by reducing protein synthesis. However, their actions on muscle protein degradation remain equivocal. Glucocorticoids have been reported to transiently increase muscle protein degradation, to not affect this process and to reduce muscle protein degradation. Reasons for these conflicting...
Resource Type:: Masters Thesis
Full Text:: . Special thanks are expressed to my committee members, Dr. L. J. Koong, Dr. Frank Moore and Dr. Frank

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

Reproductive characteristics of pregnant mares passively immunized against equine chorionic gonadotropin

Creator:: Shore, Maria Dawn
Abstract:: Two experiments were conducted to examine the effects of passive immunization of pregnant mares with a monoclonal antibody [MAb, 518B7, antibovine βLH which crossreacts with equine chorionic gonadotropin (eCG)] on subsequent reproductive characteristics and changes in plasma concentrations of hormones. In Exp.1 control mares (C, n=3) were not treated. Another...
Resource Type:: Masters Thesis
Full Text:: gestation (Cole and Goss, 1943; Clegg et al., 1954; Allen and Moor, 1972). In the event of pregnancy

Differential gene expression in the pregnant bovine corpus luteum during maternal recognition of pregnancy

Creator:: DuBay, Kristi M.
Abstract:: Interferon tau (IFN-τ) is the pregnancy recognition signal secreted by the trophectodermal cells of the developing bovine embryo that prevents luteolysis and maintains critical progesterone production. Recent evidence has suggested in addition to the mechanism of action identified in the uterus, there may be a direct effect of IFN-τ on...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

In vitro hormonal and metabolic control of bovine mammary glucose 6-phosphate dehydrogenase activity

Transforming shrimp and crab waste into dairy heifer feed

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

Identification of a mechanism underlying heritable subfertility in roosters homozygous for the rose comb allele

Implications of selenium status for various metabolic and performance parameters in beef cattle

Studies on luteinizing hormone and gonadal steroids in male and female llamas (Lama glama)

Temporal effects of Dexamethasone on skeletal muscle protein metabolism in rabbits

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

Reproductive characteristics of pregnant mares passively immunized against equine chorionic gonadotropin

Differential gene expression in the pregnant bovine corpus luteum during maternal recognition of pregnancy

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