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Full-Text Articles in Dairy Science
Physiological Impacts And Lactational Performance Of Dairy Cows Fed Brown Midrib Corn Silage During Dry Period Through Early To Midlactation, Alexandra Windley Kelley
Physiological Impacts And Lactational Performance Of Dairy Cows Fed Brown Midrib Corn Silage During Dry Period Through Early To Midlactation, Alexandra Windley Kelley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Developing solutions to the metabolic stress experienced by cows during the transition period is very important because it can negatively influence lactational performance. The objectives were to: 1) compare physiological changes through body weight (BW) and concentrations of non-esterified fatty acids (NEFA) and β-hydroxybutyric acid (BHBA) and 2) evaluate feed intake, milk production, and energy balance (EB) of cows fed brown midrib corn silage (BMRCS)-based diets when compared with conventional corn silage (CCS)-based diets during the transition. At 4 wk prior to parturition, 40 dry multiparous Holstein cows …
Relationships Between Teat Shape, Teat Erosion, California Mastitis Test, And Milk Production In A Large Dairy Herd, John Sephen Malan
Relationships Between Teat Shape, Teat Erosion, California Mastitis Test, And Milk Production In A Large Dairy Herd, John Sephen Malan
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Data were collected from a 1,000 cow commercial dairy unit during three different time periods to determine the interrelationships between teat shape, teat erosion, mastitis (as measured by the California Mastitis Test and somatic cell counts), and milk production.
Results showed no relationship between teat shape or teat end erosion and milk or fat production. The relationship between teat end erosion and mastitis appeared to be masked by the high level of teat erosion. There was an indication that cows with flat and cone shaped teat ends were prone to higher California Mastitis Test scores than cows with pointed, round, …