A carregar...
Publicação
Mastites em bovinos : caracterização etiológica, padrões de sensibilidade e implementação de programas de qualidade do leite em explorações do Entre-Douro e Minho
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 3.34 MB | Adobe PDF |
Resumo(s)
A preocupação do consumidor e as expectativas sobre a segurança dos produtos que adquire
foi crescendo com a capacidade de detectar e interligar os problemas de segurança alimentar
com um processo em particular.
As mastites são consideradas a doença mais dispendiosa na indústria e, na região do Entre-
Douro e Minho, as perdas com mastites rondam os 249€ vaca/ano (Aires, Larisma, Ribeiro &
Fontes, 2007), sendo o refugo prematuro e a morte de animais devidos a mastites o que mais
contribui para essas perdas.
O objecto deste estudo foi fazer uma caracterização dos principais agentes microbianos
responsáveis pelo aparecimento de mastites em explorações do Entre-Douro e Minho,
identificar os perfis de sensibilidades para os antibióticos testados, e também testemunhar o
papel do médico veterinário nos programas de qualidade de leite com vista à produção de um
leite de qualidade superior.
Das 5 explorações em estudo, duas apresentaram animais infectados com Staphylococcus
aureus. Do total das amostras de leite recolhidas nas explorações, 32% eram positivas para
Staphylococcus coagulase negativo, 9,2% para Streptococcus spp. e 8,4% para
Corynebacterium bovis. Cerca de 7% das amostras apresentavam-se com mais que um agente
patogénico e cerca de 25% resultaram em culturas negativas. De entre os agentes contagiosos
com maior relevância clínica, 2,3% das amostras deram positivas a Staphylococcus aureus e
2,1% a Streptococcus agalactiae.
Do total de isolados testados nas explorações, a associação amoxiciclina/ácido clavulânico
(82%) e a cefoperazona (77%) apresentaram a maior eficácia in vitro, seguidas da associação
cefalexina/canamicina (76%) e gentamicina (69%).
Com este trabalho foi possível perceber que ainda existe muito trabalho para fazer nesta área,
principalmente na formação dos produtores, e que a implementação de programas da
qualidade de leite permite melhorar a qualidade do produto final, traduzindo-se num lucro
superior para o produtor.
ABSTRACT - Bovine Mastitis: etiologic characterization, antibiotic sensivity patterns and implementation of milk quality programs in Entre-Douro e Minho dairy farms - The consumers’ worries and expectations on the safety of the daily acquired products have increased with the capacity of detecting and connecting the problems of food security with a particular process. Mastitis are considered the most expensive disease in the dairy industry and, particularly in Entre-Douro e Minho, this losses are about 249€ cow/year (Aires, Larisma, Ribeiro & Fontes, 2007), with mortality and premature culling being the reasons that mostly contributes to these losses. The aims of this study was to characterize the most important microbiologic agents responsible for mastitis in dairy farms in the region of Entre-Douro e Minho, to identify the susceptibility profiles for the tested antibiotics, and to demonstrate the role of veterinarian practitioners in the milk quality programs with the goal to produce high quality milk. Two of the five studied dairy farms were found to have animals infected with Staphylococcus aureus. 32% from the total dairy farms milk samples were contaminated with Staphylococcus coagulase negative, 9.2% of samples with Streptococcus spp., and 8.4% of the samples were infected with Corynebacterium bovis. About 7% of the samples were infected with more than one pathogenic agent, and about 25% of them resulted in negative cultures. Among the most clinic relevant contagious agents responsible for mastitis, 2.3% of the samples were positive for Staphylococcus aureus and 2.1% for Streptococcus agalactiae. From the total of samples tested in the dairy farms, amoxicyllin/clavulanic acid association (82%) and cefoperazone (77%) have major effectiveness in vitro, followed by cefalexine/kanamicine (76%) and gentamicin (69%). With this work it was possible to realize that still much work has to be done mainly in educating the farmer, and milk quality programs should be implemented in order to improve the final product quality, resulting in increased financial profit for the producer.
ABSTRACT - Bovine Mastitis: etiologic characterization, antibiotic sensivity patterns and implementation of milk quality programs in Entre-Douro e Minho dairy farms - The consumers’ worries and expectations on the safety of the daily acquired products have increased with the capacity of detecting and connecting the problems of food security with a particular process. Mastitis are considered the most expensive disease in the dairy industry and, particularly in Entre-Douro e Minho, this losses are about 249€ cow/year (Aires, Larisma, Ribeiro & Fontes, 2007), with mortality and premature culling being the reasons that mostly contributes to these losses. The aims of this study was to characterize the most important microbiologic agents responsible for mastitis in dairy farms in the region of Entre-Douro e Minho, to identify the susceptibility profiles for the tested antibiotics, and to demonstrate the role of veterinarian practitioners in the milk quality programs with the goal to produce high quality milk. Two of the five studied dairy farms were found to have animals infected with Staphylococcus aureus. 32% from the total dairy farms milk samples were contaminated with Staphylococcus coagulase negative, 9.2% of samples with Streptococcus spp., and 8.4% of the samples were infected with Corynebacterium bovis. About 7% of the samples were infected with more than one pathogenic agent, and about 25% of them resulted in negative cultures. Among the most clinic relevant contagious agents responsible for mastitis, 2.3% of the samples were positive for Staphylococcus aureus and 2.1% for Streptococcus agalactiae. From the total of samples tested in the dairy farms, amoxicyllin/clavulanic acid association (82%) and cefoperazone (77%) have major effectiveness in vitro, followed by cefalexine/kanamicine (76%) and gentamicin (69%). With this work it was possible to realize that still much work has to be done mainly in educating the farmer, and milk quality programs should be implemented in order to improve the final product quality, resulting in increased financial profit for the producer.
Descrição
Dissertação de Mestrado Integrado em Medicina Veterinária
Palavras-chave
Mastite Qualidade do leite Controlo Antibiograma Biossegurança Mastitis Milk quality Quality control Antibiograme Biosecurity
Contexto Educativo
Citação
Aires, T.A.C.P. (2010). Mastites em bovinos : caracterização etiológica, padrões de sensibilidade e implementação de programas de qualidade do leite em explorações do Entre-Douro e Minho. Dissertação de Mestrado. Universidade Técnica de Lisboa, Faculdade de Medicina Veterinária, Lisboa.
Editora
Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária