Aspectos citológicos e microbiológicos do leite

Pesq. Vet. Bras. 29(11):881-886, novembro 2009

Aspectos citológicos e microbiológicos do leite em propriedades no sistema orgânico de produção1
Hélio Langoni2*, Débora Tieko Parlato Sakiyama3, Felipe de Freitas
Guimarães4, Benedito Donizete Menozzi5 e Rodrigo Costa da Silva6
ABSTRACT.- Langoni H., Sakiyama D.T.P., Guimarães F.F., Menozzi B.D. & Silva R.C.
2009. [Cytological and microbiological aspects of milk in farms with an organic system of production.] Aspectos citológicos e microbiológicos do leite em propriedades no sistema orgânico de produção. Pesquisa Veterinária Brasileira 29(11):881-886.
Departamento de Higiene Veterinária e Saúde Pública, Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Campus de Botucatu, Distrito de
Rubião Júnior s/n, Botucatu, SP 18618-000. E-mail: [e-mail]
Nowadays, farmers have great interest in milk production within an organic system due to the consumers’ claim for natural products. The purpose of this paper was to study the cytological and microbiological quality of milk produced by four farms in the county of
Botucatu, SP, which use organic system management. A total of 150 mammary gland milk samples were tested by CMT and Somatic Cell Count (SCC/mL milk), microbiological examination, and Colony Former Unit Count (CFU mesophile microrganisms/mL milk).
From these individual milk samples, 66 (44.0%) were CMT positive. Corynebacterium bovis was isolated from 37.9% milk samples, Staphylococcus aureus from 18.2%, S. epidermidis from 15.2%, Streptococcus uberis from 3.0%, and S. dysgalactiae from 3.0%. Association of at least two different bacteria species was observed in 7.6% samples. In respect to the whole milk of each farm, the SCC/mL values were in normal limits on three of them (i.e. lower than 400x103), and considering the CFU/mL, on three farms high levels were observed
(8,5x105; 1,5x106; 4,1x105). From the individual milk samples, contagious mastitis