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 11 of 11 for “"Transition cows"”.
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Effects of close-up dietary energy strategy and prepartal dietary monensin on hepatic mRNA expression of enzymes involved in glucose and lipid metabolism in transition cows
A two-stage feeding system for dry cows (far-off plus close-up groups) has been used by farmers for a long time. However, little basic research has been conducted to evaluate the effects of such approach on liver function. The objective of this study was to 1) to compare the effect of two different …
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Transition cows: hepatic endocannabinoid system gene expression in response to prepartal plane of nutrition and the effects of genetic merit on genes of lipid metabolism in adipose tissue
Two experiments were conducted on transition cows to evaluate 1) hepatic endocannabinoid system gene expression in response to prepartal plane of nutrition. 2) effects of genetic merit on lipid metabolism in adipose tissue. For the objective of first experiment, we examined mRNA expression via qPCR …
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Feeding behavior and metabolism of transition dairy cows supplemented with monensin
… behind the metabolic changes observed when transition cows are administered monensin, as well as the effects of supplementing mid-lactation cows with two commercial amino acid products were investigated. Traditionally, the effects of monensin are attributed to increased gluconeogenic …
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Regulation of glucose metabolism in dairy cattle
… supplement did not affect glucose metabolism in transition cows. The data revealed that insulin sensitivity was low during the transition period, but the tissue responses to insulin and the acute insulin response to a glucose infusion increased slightly after calving as compared to late …
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Physiological and molecular mechanisms associated with performance, immunometabolic status, and liver function in transition dairy cows fed rumen protected methionine or choline
The onset of lactation in dairy cows is characterized by high output of methylated compounds in milk when sources of methyl group are in short supply. Methionine (MET) and choline (CHOL) are key methyl donors and their availability during this time may be limiting for milk production, hepatic lipid …
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The rumen microbial ecosystem during the transition period in dairy cows
Seven rumen cannulated Holstein cows were used from 3 weeks prepartum to 4 weeks postpartum to determine the relative abundance of 7 different species of ruminal microorganisms. The prepartum diet was based on corn silage. In the postpartum, diet included ground corn, grain by-products, and alfalfa …
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Blood and liver biomarkers and transcriptome alterations during the transition period reveal beneficial effects of rumen-protected methionine supplementation on health status and performance in dairy cows
… supply of nutrients to mammary gland. Peripartal cows are likely to undergo a negative methionine (Met) balance due to increased requirements of tissues and cells for methylated compounds and Met for milk protein production. Therefore, supplementation of rumen-protected Met during the peripartal …
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Endocannabinoid and lipid metabolism genes network analysis in adipose and liver tissue of dairy cows during the transition period
During the transition period dairy cows are exposed to enormous metabolic changes. These changes could affect the overall health and production. Two experiments were conducted on transition cows to evaluate the 1) effects of body condition score (BCS) on the endocannabinoid system and lipid …
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Management during the dry period and its effect on hepatic and adipose tissue molecular biomarkers of metabolism and health in grazing dairy cows
A successful transition into lactation determines optimum production, reproduction, and health. The peripartum period is characterized by an inflammatory state that, if not controlled, could be detrimental to the cow. The first experiment examined hepatic and adipose gene expression in response to …
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Bioinformatics analysis of liver and adipose tissue microarray data from periparturient dairy cattle and development of a web-based ruminant specific microarray database
… the metabolic responses in the liver of dairy cows that were overfed or restricted-fed dietary energy prepartum, 2) to evaluate the metabolic changes and physiological adaptations in the bovine adipose tissue occurring during pregnancy into early lactation, and 3) to develop a ruminant specific …
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Effects of prepartum dietary energy and lipid supplementation on hepatic transcriptome profiles in dairy cows during the transition period
The transition period in dairy cows is the most crucial time for both cow health and dairy management. Three experiments were conducted on transition dairy cows to evaluate the effects of prepartum overfeeding and lipid supplementation around parturition on hepatic mRNA expression using qPCR and …