Associação entre o índice de mastite em rebanhos bovinos leiteiros e a qualidade microbiológica do leite cru no Estado de São Paulo, Brasil / Association between mastitis rate in bovine dairy herd and the raw milk microbiological quality in São Paulo State, Brazil

AUTOR(ES)

Luís Ivan Martinhão Souto

DATA DE PUBLICAÇÃO

2006

RESUMO

The purpose of this research was to investigate the possible correlations between the mastitis rate and raw milk microbiology quality, from 36 dairy farms, in São Paulo State, Brazil. It was investigated 4662 mammary quarters of 1180 lactant animals to examine mastitis cases using Tamis test and CMT. It was collected one sample of each positive mammary quarter in one test at least to microbiological analysis. To estimate the raw milk microbiological quality, it was colected one sample from each farm and realized one aerobic plate count of microorganisms mesophilic, aerobic plate count of microorganisms psychrotrophic, aerobic plate count of microorganisms termophilic, Enterococcus spp. plate count, Stahylococcus spp. plate count, Streptococcus spp. plate count, Corynebacterium spp. plate count, Yeast and Molds plate count, Most Probable Number of coliforms, Most Probable Number of fecal coliforms. It was used Pearson Correlation test and Linear Regression. In order to compare mastitis rates, the best correlation was between positives CMT test rate and the cases of mastitis caused by infections disease (r = 0,920 and R2 = 84,7%). Analysing the mastitis rate and the raw milk microbiological quality, the best result of correlation was between Staphylococcus mastitis rate and the aerobic plate count of microorganisms termophilic (r = 0,522 e R2 = 27,3%). Because of the low number of significant correlation, it was observed that the mastitis heard in dairy bovines herds do not interfere in raw milk microbiological quality, in the condition of this experiment.

ASSUNTO(S)

milk (quality) raw milk mastite animal microbiology leite cru dairy herds microbiologia bovinos leiteiros leite (qualidade) animals mastitis

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