乳頭損傷と乳房炎を合併した乳牛に乳頭管栓塞と搾乳休止による治療が奏効した1例

Abstract

A six-year-old Holstein cow with anorexia and fever was diagnosed with teat-canal injury complicated by acute mastitis caused by Streptococcus uberis. The cow was treated by parenteral and intramammary administration of antibiotics and a wax-teat bougie (NIT) inserted into the teat canal of the affected quarter to halt milking. To rest the teat, the quarter was not milked for 25 days. Intramammary antibiotics infusions and bougie inser-tion were performed at five-day intervals. On day 26, a negative CMT and culture showed that the teat injury and the mastitis had been fully cured. On day 31, milk yield had recovered to pretreatment level.