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.
Results
Showing 1 to 9 of 9 for “"Transition cow"”.
-
Investigating the effect of yeast and mineral dietary supplements during the periparturient period on the production, physical health, and innate immune system of dairy cows
The periparturient period of a dairy cow is defined as the time when the cow goes from a state of near maintenance in late gestation to a rapid on-set of metabolic adaptation to meet the needs of lactation production. This homeorhetic phase requires the coordination of numerous hormones and tissues …
-
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 …
-
The Association Between Non-Esterified Fatty Acids And Beta-Hydroxybutyrate During The Transition Period In Holstein Dairy Cows And Negative Downstream Outcomes - Disease Incidence, Milk Production And Reproduction
… post-partum is a challenging time for dairy cows because of both environmental and biological changes taking place in preparation for parturition and lactation. At the animal level, excessive negative energy balance (NEB) can increase the risk of developing displaced abomasa, clinical …
-
EFFECTS OF FEEDING A COMBINATION OF SYNTHETIC ZEOLITE A AND 25 HYDROXYVITAMIN D3 DURING THE PREPARTUM PERIOD ON MINERAL METABOLISM AND LACTATION PERFORMANCE OF HOLSTEIN DAIRY COWS
Hypocalcemia during the transition period in dairy cows significantly affects health, reproduction, and milking performance. Although several effective strategies exist to regulate Ca metabolism, the interactions between Ca dynamics, inflammation, and dry matter intake remain poorly understood. …
-
Effects of feeding moderate-energy high-forage diets with reduced DCAD for twenty-one or forty-two days prepartum on mineral homeostasis and postpartum performance
… that prevent milk fever and hypocalcemia in the transition cow are not completely understood. Extended negative dietary cation-anion difference (DCAD) feeding in the prepartum diet would allow producers to utilize a one group dry cow pen; reducing social stress on cows while providing protection …
-
The effects of feeding a negative dietary cation-anion difference diet at two dietary calcium inclusion rates to close up dry cows on the subsequent lactation uterine health and fertility
… of dietary Ca to feed with a close-up dry cow negative DCAD diet and the effects on the subsequent uterine health, circulating inflammatory blood metabolites, ovulation dynamics, and fertility. Multiparous Holstein cows (n = 76) were enrolled at 50 days before expected calving date and …
-
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 …
-
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 …
-
Nutritional modulation of the transcriptome in adipose, liver, and polymorphonuclear leukocytes in peripartal dairy cows
Peripartal dairy cows undergo extensive changes in metabolism and experience immune system adaptations which can hinder short-term health, production, and longevity. Various prepartum nutritional strategies have been implemented to alleviate negative consequences and maximize benefits to both cow …