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Dairy Science

Electronic Theses and Dissertations

Transition cow

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In-Vivo Assessment Of A Direct-Fed Microbial On Lactation Performances, Blood Biomarkers, Ruminal Fermentation And Microbial Abundance In Transition To Mid-Lactation Holstein Cows, Marcela Bulnes Lopez Jan 2023

In-Vivo Assessment Of A Direct-Fed Microbial On Lactation Performances, Blood Biomarkers, Ruminal Fermentation And Microbial Abundance In Transition To Mid-Lactation Holstein Cows, Marcela Bulnes Lopez

Electronic Theses and Dissertations

The transition period is a crucial stage in the lactation cycle and can lead to significant metabolic changes in cows. The use of nutritional interventions, such as direct-fed microbials, may assist cows during the transition from pregnancy to early lactation, reducing the occurrence of metabolic disorders and improving overall health. The primary goal of this study was to assess the effects of a commercial rumen-derived directfed microbial (DFM) product (Galaxis™ Frontier (GF) Native Microbials Inc., CA, USA) on various factors such as performance, blood biomarkers, rumen fermentation, and bacterial population in dairy cows during the transition period up to 100 …


Physiological Responses To Feeding A Yeast Culture Supplement To Transition Dairy Cows, Nathaly Ana Carpinelli Jan 2020

Physiological Responses To Feeding A Yeast Culture Supplement To Transition Dairy Cows, Nathaly Ana Carpinelli

Electronic Theses and Dissertations

The transition period is the dynamic stage in the lactation cycle, where the most metabolic changes can occur. The use of nutritional strategies, such as yeast culture, can help cows during the transition from pregnancy to early lactation, improving health and decreasing the incidence of metabolic disorders. The first objective of this research was to evaluate the effects of a commercial yeast culture product (YC; Cellerate Culture Classic HD, Phibro Animal Health, Teaneck, NJ) on performance, blood biomarkers, and rumen fermentation and bacterial population in dairy cows during the transition period through 50 days in milk (DIM). Overall, the results …