This study aimed to perform an analysis of the weight of live components ("fifth quarter") of lambs subjected to different levels of concentrated supplementation in Tifton-85 pasture. Twenty-five lambs were used, all of them castrated males, of no specific breed, all of which received in pasture conditions, different levels of supplementation: 0%, 1.0%, 1.5%, 2.0% or 2.5% of the living weight. The Food Company BÜNGE supplied the concentrated food used, ration Sano Vitosan, with the market name of ovine breeder. After each slaughtering the body parts of the animals were individually weighed. After that, the percentage of the body parts in relation to the living weight was calculated. The weights of blood, skin, foot, heart, lungs + trachea and inner fat have increased linearly with the increasing of the level of concentrated supplement, which was offered. On the other hand, a linear decreasing effect of the level of supplementation on the proportions of head and kidney was observed. The average amounts obtained were: blood = 1.208kg and 3.68%; skin = 2.958kg and 8.98%; foot = 0.643kg and 1.97%; head = 1.184kg and 3.64%; heart = 0.124kg and 0.38%; kidney = 0.088kg and 0.27%; liver = 0.507kg and 1.55%; lung + trachea = 0.573kg and 1.75%; dull = 0.047kg and 0.14%; inner fat = 0.202kg and 0.61% and kidney fat = 0.150kg and 0.46%. The weights of full green viscera and the gastrointestinal content, when expressed in kg, and the proportions of full green viscera, empty green viscera and the gastrointestinal content declined linearly with the increasing of the level of concentrated supplementation. The average amounts obtained were: full green viscera = 8.42 and 25.99%; empty green viscera = 2.71 and 8.29% and gastrointestinal content = 5,71 and 17,69%.
animal production; sheep; supplementation; visceras
