Desempenho produtivo e avaliação de carcaça e da carne de ovinos confinados.

Abstract

This study aimed to assess the intake of nutrients, carcass, commercial cuts, not caraça components and meat quality of sheep fed elephant grass or cane sugar as sources of roughage and corn meai or rice bran as concentrated energy and two feeding leveis. The study included 36 sheep without defined breed (SPRD), castrated male, with 19.77 ± 1.99 kg of body weight (BW) initial. 24 animais were kept with the will alimetação (AV) and 12 animais were food restricted (AR). The animais were distributed in a completely randomized design with eight treatments in a 2x2x2 factorial (two bulky, two concentrates, two leveis of feeding), and six repetitions for the animais fed the will and three replicates for restricted feeding, and slaughtered to achieve average of 30.0 kg BW. The animais that received restricted feeding were slaughtered as they were established and reached slaughter weight of each of the two animais treated with the will feeding. The nutrient intake was higher for treatments with corn meai, elephant grass and the will feeding. Rice bran caused greater loss in fasting, gastrointestinal contents greater weight and higher percentage of lipids in the edible portion of the loin. Diets with corn meai showed higher protein deposition in the edible portion of the loin and more ash content in the same region and muscle. The elephant grass favored higher body weight at slaughter and higher empty body weight, liver weight was higher, omasum and gastrointestinal contents. The hot carcass and cold as well as the weight of the loin, kidneys, percentage of soluble collagen and moisture from the edible portion of the loin were higher when it was added cane sugar in the experimental diet. The feeding levei will favor greater nutrient intake, carcass yield, commercial cuts, physical and proximate composition of the edible part of the carré constituents and not housing. The use of cane sugar and bran and rice as altemative feedstuffs in confinement sheep is a viable strategy for production systems has not decreased since the quantitative and qualitative parameters of sheep carcass.