Características físico-químicas e perfil lipídico do leite de cabras mestiças Moxotó alimentadas com dietas suplementadas com óleo de semente de algodão ou de girassol

Abstract

The effects of cottonseed and sunflower oil supplementation on milk composition were tested using crossbred Moxotó goats. Experimental diets were as follows: control, without addition of oil; addition of 3% cottonseed oil; 5% cottonseed oil; 3% sunflower oil and 5% sunflower oil (%DM). Ten confined lactating goats were allotted to a double Latin square experimental design (5 x 5). Each period was comprised by 12 days of adaptation to the diet and three days of sampling in each period. Cottonseed oil supplementation at 5 %DM increased the fat content (4.99%) and the total solid (13.48%) of milk. However, the addition of sunflower oil at 5% promoted an increase in the linolenic acid (C18:3) concentrations. Therefore, the vegetal oil addition in diets for native goats promoted an increase in the percentage of milk fat and in unsaturated fatty acid contents in milk, resulting in a product of better quality for the human health. © 2008 Sociedade Brasileira de Zootecnia.