Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/12966
Tipo do documento: Artigo
Título: Influence of lactation stage, delivery order of calving and genetic group on milk quality
Autor: Carmo, Ruthele Moraes do
Silva, Marco Antônio Pereira da
Pereira, Gustavo Machado
Paula, Guilherme Henrique de
Marques, Thiago Vilela Abdelnoor
Morais, Letícia Aparecida de
Silva, Vanessa Souza
Nicolau, Edmar Soares
Neves, Rodrigo Balduíno Soares
Lage, Moacir Evandro
Resumo: Milk production and quality are influenced by environmental factors such as nutrition, genetic factors such as breed and physiological. The aim of the present study was to evaluate the influence of lactation stage, delivery order and genetic group on the quality of milk from crossbred cows 3/4 Gyr, 7/8 Gyr and 15/16 Gyr. Fresh milk samples were collected from crossbred cows. Fat, protein, lactose, non fat dry extract (NDE) and somatic cell count (SCC) of milk according to lactation stage, delivery order of calving and genetic groups were evaluated. The experimental design was completely randomized. Tukey test at 5% probability was used. Animals at the final third of lactation (201 to 305 days) showed higher fat, protein, NDE and SCC levels when compared to animals of other lactation stages. First delivery animals produced milk with higher content of solids compared to animals with 2 deliveries and above three deliveries. First calving the animals produced milk with higher solids content compared to animals with two calving and above three calving. Fat, protein and NDE results of fresh milk were consistent with limits established by the Brazilian legislation for milk quality, regardless of lactation stage, delivery order of calving and genetic group. Milk SCC was higher in cows in advanced lactation stage, The results were however below limits required by law. 3/4 crossbred Gyr cows showed higher SCC, with average values above limit established by current legislation.
Palavras-chave: Somatic cell count (SCC)
Fat
Non fat dry extract (NDE)
Fresh milk
País: Brasil
Unidade acadêmica: Escola de Veterinária e Zootecnia - EVZ (RG)
Citação: CARMO, Ruthele Moraes do; SILVA, Marco Antônio Pereira da; PEREIRA, Gustavo Machado; PAULA, Guilherme Henrique de; MARQUES, Thiago Vilela Abdelnoor; MORAIS, Letícia Aparecida de; SILVA, Vanessa Souza; NICOLAU, Edmar Soares; NEVES, Rodrigo Balduíno Soares; LAGE, Moacir Evandro. Influence of lactation stage, delivery order of calving and genetic group on milk quality. African Journal of Agricultural Research, Johannesburg, v. 10, n. 50 p. 4532-4537, Dec. 2015.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.5897/AJAR2015.9808
Identificador do documento: 10.5897/AJAR2015.9808
URI: http://repositorio.bc.ufg.br/handle/ri/12966
Data de publicação: Dez-2015
Aparece nas coleções:EVZ - Artigos publicados em periódicos

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