Milk flow, teat morphology and subclinical mastitis prevalence in Gir cows

Pesquisa Agropecuária Brasileira

Marco Aurélio De Felicio Porcionato²  Weber Vilas Boas Soares¹  Carolina Barbosa Malek Dos Reis²  Cristina Simões Cortinhas²  Lucinéia Mestieri²  Marcos Veiga Dos Santos² 

[1] ,Universidade de São Paulo Faculdade de Medicina Veterinária e Zootecnia Departamento de Nutrição e Produção AnimalPirassununga SP ,Brazil

关键词: Gir;    lactation;    mammary gland;    milking;    morphology;    Gir;    lactação;    glândula mamária;    ordenha;    morfologia;   

DOI  :  10.1590/S0100-204X2010001200023

来源: SciELO

【 摘 要 】

The aim of this work was to evaluate the association between milk flow, teat morphological measurements and subclinical mastitis prevalence in Gir cows. Eighty cows in the 2nd and 3rd lactations, with 90 to 200 days of lactation, were divided according to milk flow during milking into fast or slow groups. Teat morphometry was assessed by ultrasound scanning of the right anterior teat and external measurements. Milk samples were collected for somatic cells count (SCC) and microbiological culture. The effect of milk flow during milking was evaluated by analysis of variance of milk yield, SCC, morphometry and external measurements. The association of morphometry and external measurements of the teats with the SCC and microorganisms found in milk were analysed. Milk flow was significantly correlated to milk production. Gir cows with slower milk flow had longer teat canal and greater milk yield, in comparison to cows with fast milk flow. Teat-end to floor distance influenced SCC of Gir cows. Prevalence of subclinical mastitis and the type of mastitis-causing pathogens were not affected by milk flow during milking

【 授权许可】

CC BY   
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