Utilização da glicerina bruta em suplementos múltiplos para bovinos de corte

• Autor(a) principal: Arelaro, Danilo
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/5969
• topic: Biodiesel; Bovino; Sustentabilidade; Biodiesel; Cattle; Sustainability; CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL

With the growing production of biodiesel, production of byproducts has increased, among them are glycerine which generates a surplus of production that the industry can not absorb, and which can become an environmental contaminant. Therefore, it is necessary to find other options for the use of these coproducts, and its use in animal nutrition may be an alternative to the use of these coproducts. Glycerol present in glycerin, can be used with precursor gliconeogênico by ruminants. Glycerol is an important structural component of triglycerides and phospholipids and when the body uses body fat reserves as an energy source it releases glycerol and fatty acids into the bloodstream, glycerol can be converted to glucose by the liver, providing energy for metabolism cells. Accordingly, we evaluated the partial replacement of corn used to supplement the crude glycerine (GB), in proportions of 0%, 6% and 12%, based on dry matter (DM) on the body weight gain of cattle cutting the grass. Were used thirty Nellore steers aged 12-18 months, the supplemented pasture (Brachiaria brizantha cv. Marandú), divided into three treatments with two replications. The animals received daily supplements of 1 kg per day and the treatments: A = supplement no crude glycerin (SGB); supplement with B = 6% crude glycerine (GB6%) and C supplement = 12% crude glycerine (GB12%). There were no significant differences in the values of average weight gain between treatments (P<0.05). The use of crude glycerin from biodiesel production through grain oilseed partially substituting corn supplements for grazing cattle in a proportion of 0.35% on average body weight, showed no significant difference in weight gain, and should be more work done to determine the optimal level of glycerin in situations in where the staple food is pasture. The use of glycerine replacing corn will depend on the cost of maize to enable its use.