Produção e composição do leite de vacas submetidas a dietas contendo diferentes níveis e formas de suplementação de lipídios
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Data
2001-04-25
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Editor
Revista Brasileira de Zootecnia
Resumo
O objetivo deste trabalho foi verificar o efeito de fontes de lipídios (soja integral moída e óleo de soja) adicionados à dieta sobre a produção e qualidades físico-químicas do leite. Foram utilizadas seis vacas multíparas 7/8 holandês-zebu, 30 dias após o parto, com peso vivo médio de 500 kg e produção média de 20 litros de leite ao dia. Os animais foram divididos em três grupos para recebimento das dietas, isoprotéicas e isoenergéticas, em que o tratamento controle continha 3% de extrato etéreo na ração total e os demais, 7%. Não foi verificado efeito de tratamento sobre os parâmetros avaliados. Os resultados das análises físico-químicas do leite estão dentro da faixa de valores recomendados pelo Regulamento de Inspeção Industrial e Sanitária de Produtos de Origem Animal.
The objective of this work was to verify the effect of lipids sources (whole soybean meal - WSM; and soybean oil - SBO) added to the diet on changes in milk production and its physical-chemical characteristics. Six multiparous 7/8 Holstein-Zebu cows, averaging 30 days post calving, 500 kg body weight and daily milk production of 20 l were used. The animals were divided into three groups and received three isoproteic and isocaloric diets (treatments): control (3% ether extract), WSM (7% ether extract) and SBO (7% ether extract). There were no treatment effects on any measured parameters. The results on the physical-chemical analysis of the milk were within the range of allowed values by Brazilian regulation of industrial inspection and sanity of products of animal origin.
The objective of this work was to verify the effect of lipids sources (whole soybean meal - WSM; and soybean oil - SBO) added to the diet on changes in milk production and its physical-chemical characteristics. Six multiparous 7/8 Holstein-Zebu cows, averaging 30 days post calving, 500 kg body weight and daily milk production of 20 l were used. The animals were divided into three groups and received three isoproteic and isocaloric diets (treatments): control (3% ether extract), WSM (7% ether extract) and SBO (7% ether extract). There were no treatment effects on any measured parameters. The results on the physical-chemical analysis of the milk were within the range of allowed values by Brazilian regulation of industrial inspection and sanity of products of animal origin.
Descrição
Palavras-chave
Composição do leite, Gordura suplementar, Lipídios, Produção de leite