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Full-Text Articles in Animal Sciences
Efficiency Of Energy Utilization And Fecal Mineral Excretion In Holstein And Jersey Dairy Cows, Gabriel Garcia Gomez
Efficiency Of Energy Utilization And Fecal Mineral Excretion In Holstein And Jersey Dairy Cows, Gabriel Garcia Gomez
Department of Animal Science: Dissertations, Theses, and Student Research
Eight multiparous Holstein and 8 Jersey dairy cows were used to complete energy balance trials designed to determine the effect of breed on the production and energy efficiency of milk, and energy partitioning. A repeated switchback design was used to compare the effect of cow breed. Diets consisted of 24.5% corn silage, 18.4% alfalfa hay, 6.9% grass hay, with either 22.9% rolled corn and 14.8% soybean meal (CON) or 8.95% rolled corn and 28.8% reduced fat distillers grains (RFDDGS) DM-basis. Diets were offered ad libitum for a 28 d adaptation period and 95% ad libitum for a 4 d collection …