Correlation between mastitis occurrence and the count of microorganisms in bulk raw milk of bovine dairy herds in four selective culture media

Autor(es)

Souto, Luis I. M. ^[1] ; Minagawa, Clarice Y. ^[1] ; Telles, Evelise O. ^[1] ; Garbuglio, Marcio A. ^[1] ; Amaku, Marcos ^[1] ; Melville, Priscilla A. ^[1] ; Dias, Ricardo A. ^[1] ; Sakata, Sonia T. ^[1] ; Benites, Nilson R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Vet Med, Dept Prevent Vet & Anim Hlth, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF DAIRY RESEARCH; v. 77, n. 1, p. 63-70, FEB 2010.
• Citações Web of Science: 6

Resumo

Milk is the normal secretion of the mammary gland, practically free of colostrum and obtained by the complete milking of oil(? or more healthy animals. Mastitis is all inflammatory process of the mammary gland and it may cause alterations in the milk. The present work aimed to verify whether it is possible, by means of the counts of microorganism in the bulk raw milk ill four selective culture media, to establish a correlation with the occurrence of mastitis and therefore, to monitor this disease in bovine dairy herds. The following selective culture media were Used: KF Streptococcus Agar, Edwards Agar, Baird-Parker Agar, Blood Agar plus potassium tellurite. Spearman's correlation coefficient was calculated in order to compare the Occurrence of mastitis (percentage) in each herd with respective selective culture media counts of microorganisms in bulk raw milk. Thirty-six possibilities were analysed (Tamis and CMT-positive rates were compared with the log-transformed count in four selective Culture media) and there was a negative correlation between Tamis 3 and the Baird-Parker Agar plate count. The total results of microbiological tests showed that there were three correlations of the counts in selective culture media. Fifty-two possibilities were analysed and there was a negative correlation between no-bacteria I-growth mastitis rates and log(10) of KF Streptoccocus Agar plate Count and there were two positive correlations between coagulase-positive staphylococci and log(10) of Baird-Parker Agar plate count and Blood Agar plus potassium tellurite plate count. (AU)

• Processo FAPESP: 03/04785-0 - Associação entre o índice de mastite em rebanhos leiteiros e a qualidade microbiológica do leite cru
• Beneficiário: Nilson Roberti Benites
• Modalidade de apoio: Auxílio à Pesquisa - Regular