MASTISIS CONTROL PROGRAM ON DAIRIES WITH HIGH INCIDENCE IN FIRST CALVING HEIFERS: PART 2

摘要

This paper evaluates the results of mastitis control in two Buenos Aires, (Argentina), dairies with significant incidence of infections in first calving heifers. The present research was done from December 2001 to November 2002, in a farm with two dairies (Dairy 1 & Dairy 2) where 1400 Argentine Holstein cows are milked, producing a average of 28 liters/cow/day. On bulk milk tank, the following analysis were performed: somatic cell counts (BTSCC), standard plate count (SPC), counts in pasteurized milk (LPC), counts in milk with previous sample incubation (PIC) and coliforms counts (CC). The sampling, and identification of pathogens were realized according the norms indicated by the NMC.