Prevalence of Corynebacterium sp. in the milk of cows, their relationship with milking practices and the California Mastitis Test / Prevalência de Corynebacterium sp. no leite de vacas, sua relação com o manejo de ordenha e California Mastitis Test
Dambrós, Dayane; Bassani, Juliana; Miranda Portes, Vagner; Thaler Neto, André; Knackfuss Vaz, Adil; Knackfuss Vaz, Eliana.
Acta sci. vet. (Online);
41: 01-06, 2013.
Artigo
em Português
| VETINDEX
| ID: vti-480192
Resumo
Background: Corynebacterium bovis is the species among the Corynebacterium spp. more often isolated from mammary glands and despite being classified as a secondary pathogen, its role in intramammary infection is not yet defined. Some studies have shown that this agent causes no change in production and milk composition, while others noted the ability of Corynebacterium sp. in causing mastitis, considering it as a limiting factor for production of quality milk. This study aims were to determine the prevalence of Corynebacterium sp. in herds of five Brazilian States and assess the risk factors associated with the presence of this agent in milk samples. It was also analyzed the influence of Corynebacterium sp. on the California Mastitis Test of each cow in the dairy herds in Santa Catarina State (SC), Brazil. Materials, Methods & Results: It was conducted a longitudinal study in dairy herds in the States of Pernambuco (PE), Minas Gerais (MG), Paraná (PR), Santa Catarina (SC) and Rio Grande do Sul (RS). Herds were sampled four times in the period from January 2010 to July 2011, at six months intervals. Milk samples were collected from each animal, composed of the mixture of the four mammary quarters, packed in ice and sent to laboratories responsible for each State for microbiological analysis. Bacteria examination was performed by inoculation 10 µL of each milk sample, using aA mastite bovina é a enfermidade que mais causa prejuízos na pecuária leiteira tendo como principal causa as bactérias, divididas em agentes ambientais e contagiosos. [...]
Biblioteca responsável:
BR68.1