EVALUATION OF MILK QUALITY AND PRODUCTION CHANGES IN MULTIPAROUS DAIRY CATTLE FOLLOWING THE USE OF CEPHAPIRIN SODIUM INTRAMAMMARY THERAPY IN THE CLOSE UP DRY PERIOD AT A COMMERCIAL DAIRY

摘要

This purpose of this study was to evaluate changes in milk quality and production as measured by Dairy Herd Improvement Association (DHIA) Somatic Cell Counts (SCC) and milk test weights following intramammary medication (IMM) with a single tube of Cephapirin Sodium (ToDAY Fort Dodge Animal Health) per quarter. Treatment was administered by partial insertion at approximately 14-21 days prepartum in a typical on-farm setting. From an approximately 800 cow commercial Georgia dairy herd, two hundred andtwenty-five adult dairy cows (ranging from 2-8 lactations) and calving over a 3-month period initially received intramammary Cloxacillin Benzathine (Dry Clox Rx; Fort Dodge Animal Health) at dry-off with 1 tube administered by partial insertion into each quarter as per label directions.