Browsing Theses and Dissertations by Subject "dairy cattle"
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Effect of Double Ovulation on Peripheral Concentrations of Progesterone, Luteal Blood Perfusion and Hepatic Steroid Inactivating Enzymes
Progesterone is essential for the maintenance of pregnancy in cattle. Recent trends in decreased reproductive efficiency in dairy cattle have led researchers to believe that increased catabolism and decreased peripheral ... -
Efficacy of Bentonite and Calcium Montmorillonite Clays at Reducing Aflatoxin M1 Transfer in Lactating Holsteins
Aflatoxins are naturally occurring carcinogens found on grains, particularly in warmer climates. Because of their carcinogenic properties, they are strictly regulated and are only allowed in minimal amounts. Aflatoxin B1, ... -
Evaluation of B-mode and color Doppler Ultrasound as Alternative Tools for the Study of Reproduction, Temperament, and Milk production- Related Variables in the Bovine
An adequate vascular perfusion status is essential not only to maintain life, but to ensure the proper physiology of the different systems that form the animal’s body. Due to its role in the transport of oxygen and nutrients ... -
Identifying and Mitigating Heat Stress of Grazing Dairy Cattle Using Shade and Sprinklers
Animal welfare, reproduction, and milk production can be negatively affected when dairy cattle experience heat stress. Dairy cows in southern latitudes spend nearly 4 to 6 months in a state of heat stress. Animal health ... -
Use of digital infrared thermal imaging (DITI) for early detection of mastitis and to assess mammary function and lameness in dairy cattle
The objectives of this study were (1) to evaluate the use of digital infrared thermal imaging as a diagnostic tool for early detection of mastitis, (2) to test the usefulness of thermography in the quantative evaluation ...