| Resumo: |
The objective of this study was to evaluate the effect of adding babassu oil associated with sunflower oil in the diet of finishing sheep on the quantitative and qualitative characteristics of the carcass and non-carcass components, yield of commercial cuts and yield of viscera. Thirty-five Dorper x Santa Inês lambs (initial average weight of 16.6 ± 4.77 kg) were used. The animals were distributed in a randomized block design for the evaluation of five experimental diets, the control diet (TC) without oil addition, and in the other four, babassu oil was replaced by sunflower oil at 0, 1.5, 2 .25 and 3.3%. The diets contained 4.5% oil inclusion, with a roughage : concentrate ratio of 30 : 70. After 60 days of confinement, the animals were slaughtered and the quantitative characteristics of the carcasses were evaluated, as well as the determination of the yield of non-containing components. carcass, commercial cuts and tissue composition of the legs. The effect of treatments was studied using analysis of variance and, when a significant effect was detected (P < 0.05), the orthogonal contrast test was applied. There was difference (P < 0.05) for slaughter weight, hot and cold carcass weights, hot and cold carcass yields, fat thickness and loin eye area. The diet with the addition of 4.5% babassu oil tended to reduce (P > 0.05) the slaughter weight of the animals compared to the control diet. The values of cooling loss and yield of the commercial cuts were not influenced by the addition of babassu oil and neither by the association of sunflower and babassu oils. On the other hand, the weights of the whole leg, muscle, bone and dissection sum were reduced (P < 0.05) with the addition of babassu oil compared to the control diet , on the other hand, as babassu oil was replaced by sunflower oil, an increasing linear effect was observed for these variables. The weight of the full gastrointestinal tract, rumen, reticulum, omasum, abomasum, large intestine and liver were also not influenced (P > 0.05) by the experimental diets. Small intestine weight and yield showed an increasing linear effect (P < 0.05) as sunflower oil replaced babassu oil. Sunflower oil can replace in up to 66% babassu oil in the diet of finishing sheep containing 4.5% vegetable oil, without loss of weight and yield of carcasses, commercial cuts and non-carcass components. |
|---|
