A path analytic approach was used to study data collected on 23 traits of 226 Holstein-Friesians in a commercial dairy herd during May 1981-Oct. 1982. Rectal palpation to assess uterine involution and ovarian activity was performed at 15, 24 and 28 days post partum, and blood samples were collected ...

Three methods of assessing mastitis therapies are evaluated: (i) in vitro tests; (ii) experimental studies based on induced infections; (iii) field trials on commercial farms utilizing naturally occurring infections..

Developing an understanding of interrelationships among health, production, and livestock management, particularly nutrition, requires a holistic approach to the evaluation of the farming system. For both economic and animal welfare reasons, a detailed understanding of the implications of farm manag...