Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/57871
Title: Viabilidade econômica da inclusão de óleo de girassol em dieta à base de cana-de-açúcar para vacas em lactação
Other Titles: Economic viability of feeding different levels of sunflower oil in sugarcane-based diets to lactating cows
Keywords: Bovinocultura leiteira - Nutrição
Qualidade do leite
Dairy cattle - Nutrition
Milk quality
Issue Date: 2014
Publisher: Universidade Federal de Minas Gerais, Escola de Veterinária
Citation: LOPES, M. A. et al. Viabilidade econômica da inclusão de óleo de girassol em dieta à base de cana-de-açúcar para vacas em lactação. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 66, n. 3, p. 853-860, 2014.
Abstract: The aim of this study was to evaluate the economic viability of the milk yield of Holstein x Gir cows by the addition of growing levels of sunflower oil (SO) (0.0, 1.5, 3.0 and 4.5%) in the dry matter of sugar-cane based diets. The data utilized in the study were obtained from an experiment conducted with 12 multiparous Holstein x Gir cows, with average yield of 18.2kg/day of milk, distributed into three 4 x 4 Latin squares according to milk yield, lactation order and body weight. The diets were isoprotein, a total mixture fed at libitum (ratio roughage concentrate of 60:40, dry matter basis) and cow consumption was determined daily. The individual milk yields were recorded daily and their composition analyzed regarding fat, protein and fatty acids content. The economic viability was carried out by considering the prices of the feedstuffs fed and the daily consumption in the diet for each treatment. The economic benefit was obtained by the difference between the receipt with the milk sale and the cost with the feeding of the animals. The pay for quality was estimated on the basis of the mean of eight systems utilized by businesses in the dairy branch on the basis of the fat and protein contents and by milk volume. The diet without the addition of SO was the one which provided the greatest economic benefit. The addition of SO in the sugar-cane based diets was not economically viable due to the additional expenditures with SO and the penalizations resulting from the reduction of the milk protein and fat content.
URI: http://repositorio.ufla.br/jspui/handle/1/57871
Appears in Collections:DMV - Artigos publicados em periódicos

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