Níveis de uréia em dietas a base de resíduo de panificação para ovinos em terminação

Abstract

Brazilian sheep farms have undergone significant changes in recent years, driven mainly by the growing demand for quality meat, which will only be obtained by slaughtering young animals from adequate production systems (ARAÚJO FILHO, 2008). However, the system of sheep production in the country is still largely characterized by small producers, with a production system that is not well defined and with low zootechnical indexes, resulting in a low availability of animals for slaughter, with an irregular supply And with low carcass quality. The rise and instability of the prices of protein and energy concentrates are important factors in animal production in order to allow the competitiveness of production systems (FRANÇA et al, 2012). In this way, the operating costs of the production system are lower, since the operational costs of food and labor in the confinement represent 69% and 29%, respectively, of the final operating cost (PAIM et al, 2011). Can be more competitive in the market the cost of the diet should be reduced to the maximum possible without changing animal performance. In feed costs the nutrient with the highest added value is protein, in Brazil there are several foods of a protein nature, plus urea has been one of the most widely used ingredients when it comes to reducing the cost of protein in ruminant diets. One way to minimize environmental impacts, and to reduce operational costs is to use agro-industrial waste or by-products, which completely or partially replace traditional food, without however compromising the productive performance of the herd, for these problems being circumvented may be Maize substitution, one of the sources that can be used is the bakery residue, which is a portion of the production of foodstuff industries for human consumption, which do not Requirements for their consumption, but, however, it contains both nutritional and sanitary quality for animal consumption, thus being able to substitute maize as a source of energy in food. With the current growth in the production of industrialized food products to meet the demand of the fast growing population, also to an increase of by-products from the industry, to avoid this waste and the contamination of the environment by them, several branches of society are looking for alternatives To reuse these products, one of the possible and most promising uses for these by-products and in animal feed, then research companies and universities have been researching the best use and their nutritional qualities. Confinement provides a benefit to the productive system, such as alleviating animal load on grazing, thus leaving more forage for the animals that remain in it, prevents animals from losing weight at these times and reducing animal mortality. The confinement of lamb provides better nutritional control, guaranteed meat production throughout the year with younger animals and with standardized carcasses, and with faster capital return.