Características do leite e sanidade da glândula mamária de bovinos curraleiro pé-duro e pantaneiro

• Ano de defesa: 2015
• Autor(a) principal: Sola, Marília Cristina
• Orientador(a): Rezende, Cíntia Silva Minafra e
• Banca de defesa: Fioravanti, Maria Clorinda Soares, Bueno, Cláudia Peixoto, Juliano, Raquel Soares, Coelho, Karyne Oliveira, Mesquita , Albenones José de
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Programa de Pós-graduação em Ciência Animal (EVZ)
• Departamento: Escola de Veterinária e Zootecnia - EVZ (RG)
• País: Brasil
• Palavras-chave em Português: Contagem de células somáticas; Mastite; Proteinograma do soro lácteo; Qualidade do leite; Raças bovinas locais
• Palavras-chave em Inglês: Mastitis; Whey protein profile; Milk quality
• Área do conhecimento CNPq: CIENCIA DE ALIMENTOS::AVALIACAO E CONTROLE DE QUALIDADE DE ALIMENTOS; MEDICINA VETERINARIA PREVENTIVA::SAUDE ANIMAL (PROGRAMAS SANITARIOS)
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/5167

This study aimed to analyze the health aspects of the mammary gland, whey protein profile, and quality of milk produced by the breeds Curraleiro Pe-Duro and Pantaneiro. We evaluated 226 milk samples from a Curraleiro Pé-Duro herd, in the municipality of Cocalzinho, Goiás, and 107 milk samples from a Pantaneiro herd, belonging to the Nhumirim farm - Embrapa Pantanal experimental unit, municipality of Corumbá, Mato Grosso do Sul, from January 2013 to May 2014. We determined values related to the milk chemical composition (fat, protein, lactose, degreased, and total dry extract) and physical aspects (acidity, pH, electroconductivity). According to the results of this study, we determined the values related to the chemical composition (fat, protein, lactose, total solids, and degreased) and physical aspects of milk (acidity, pH, electroconductivity). Cases of clinical and subclinical mastitis were identified in herds with the involvement of bacteria of the genera Staphylococcus, Streptococcus, Bacillus, Corynebacterium, Escherichia, Serratia, Enterobacter, Klebsiella, Citrobacter, Proteus, Yersinia, and Shigella. There was no presence of antibiotic residues in the milk of both breeds. It was possible to characterize the main proteins present in whey as the concentration, molecular weight, and gel migration time due to microfluidic electrophoresis assays, besides the evidence of mastitis effect on whey proteins regarding the increase in the concentration of albumin, immunoglobulin G, and lactoferrin. The results of this study suggest that Curraleiro Pé-Duro and Pantaneiro showed good conditions of milk quality and sanity of the mammary gland in most animals evaluated, justifying the importance in the conservation of these genetic resources for future contribution to the development of the national livestock.