Avaliação nutricional de subprodutos da indústria do biodiesel e sua importância na alimentação de ruminantes

Abstract

Currently the search for other renewable energy sources has been stimulated, one of these sources is biodiesel, but its manufacture generates by-products called pies, which usually do not have an adequately adequate destination. These, in turn, have nutritional characteristics to be included in formulations of ruminant diets. The objective was to characterize and determine the nutritional quality of by - products obtained by the extraction of soybean oil, cottonseed and canola for biodiesel production and their use in ruminant feed. The work was carried out in the bromatology laboratory of the Universidade Tecnológica Federal do Paraná, Campus Dois Vizinhos, where samples of canola cake (Brassicanapus), soybean cake (Glycinemax), cotton cake (Gossypium spp. L.) and peanut (Arachis Hypogaea L.) were used to obtain values of dry matter (DM), mineral matter (MM), organic matter (OM), ethereal extract (EE), neutral detergent fiber (NDF), acid detergent fiber (ADF), crude protein (CP), total carbohydrates (TC), soluble carbohydrates (SC). It was verified that the analyzed pates were classified as highly protein concentrates, where the highest content was found for peanut pie, and it could be an efficient substitute for soybean meal in the diets, however, all protein values were high which can be considered a risk factor in ruminant feeding because they are above the required protein requirements, and a balance of the ingredients to be supplied in the diet of these animals is necessary. Most of the analyzes are similar to those found in the literature, but the difference in some of them can be evidenced by the way of extraction of oils, by the high protein content or in the high fiber content of the cotton, however, both have high nutritional qualities for inclusion in ruminant diets.