Prevalence, etiology and risk factors of subclinical mastitis in dairy cattle of Viçosa-MG

Autor: Da Cunha, Adriano França, Bragança, Lindomar José, Quintão, Leonardo Cotta, Silva, Simone Quintão [UNESP], De Souza, Fernando Nogueira, Cerqueira, Mônica Maria Oliveira Pinho
Přispěvatelé: UNIVIÇOSA, Universidade Estadual Paulista (UNESP), Universidade Federal de Minas Gerais (UFMG)
Jazyk: portugalština
Rok vydání: 2015
Předmět:
Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Popis: Made available in DSpace on 2022-04-28T19:03:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-01-01 The prevalence, causative agents and factors related to management practices and production characteristics that influenced subclinical mastitis were determined in 44 dairy farms of Viçosa-MG. In 617 cows, subclinical mastitis was diagnosed by California Mastitis Test. Milk samples from animals with mastitis were submitted to microbiological tests for confirmation of the disease. A structured questionnaire was used to determine the risk factors of mastitis. The prevalence of subclinical mastitis in herds were 55.4%. The etiological agents more isolated were Corynebacterium sp. (32.99%), Staphylococcus aureus (28.35%), Streptococcus agalactiae (13.66%), Staphylococcus coagulase negativo (13.66%) and Staphylococcus intermedius (6.19%). The low milk production, inadequate procedure of milking, supplying of disposal milk to calves, lack of mastitis treatment during the dry period, poor hygiene of cows environmental and bad quality of water in farms had significant association (p < 0.05) with the prevalence of subclinical mastitis. Better care of the milking practices and management of the property are necessary in farms of Viçosa-MG. UNIVIÇOSA, Av. Maria de Paula Santana, 3815 Médico Veterinário UNIVIÇOSA Universidade Estadual Paulista Júlio de Mesquita Universidade Federal de Minas Gerais Inspeção de Produtos de Origem Animal Universidade Federal de Minas Gerais Universidade Estadual Paulista Júlio de Mesquita
Databáze: OpenAIRE