Torta de crambe em dietas para terminação de ovelhas em confinamento

Abstract

To evaluate the replacement of soybean meal by of crambe crushed in the diet on the parameters of performance and apparent digestibility were used 20 crossbred ewes Santa Ines, with average weight of 44.10 kg. For determine the quantitative characteristics of carcasses and meat quality, were slaughtered 16 sheep, which reached the desired body condition score 3.0 to 3.5. The animals were distributed into four treatments: 00 = absence of crambe crushed; 05 = 5% replacement of soybean meal by of crambe crushed, 10 = 10% replacement, 15 = 15% replacement, and corn silage as roughage. The concentrates were balanced to be isoenergetic with 70% total digestible nutrients. The experimental design was completely randomized, with initial weight and slaughter weight was used as a covariate in the model. The performance and intake were not affected (P>0.05), except the intake of ether extract and crude protein that increased and reduced, respectively, as the levels increased crambe crushed in the diet. The digestibility coefficient of neutral detergent fiber and non fiber carbohydrates were the ones who no effect, being the other variables influenced by replacement levels. The characteristics of carcass were not affected by replacement levels, except the cold carcass yield which showed decreasing linear response. For the sensory attributes was effect only for flavor and tenderness. There was no effect for instrumental analysis in the Semimembranosus muscle. The moisture content showed a linear increase due of the replacement levels and, contents of ash linear reduction, in the Semitendinosus muscle. The crambe crushed can be included in the diet for sheep up to 15% without impair the animal production.