Utilização de cápsulas de óleos de coco e cártamo em substituição a ractopamina para suínos em fase de pós-terminação

Abstract

The aim of this study was to evaluate the replacement of ractopamine by capsules of safflower and coconut oils in the diet of pigs in post - termination phase. Twenty four castrated male pigs with an average weight of 98.70 ± 1.63 kg were distributed in a randomized block design with four treatments and six replications. The treatments were divided into: T1 - Basal diet (RB); T2 - RB + 10 ppm Ractopamine; T3 - RB + Safflower Oil and T4 - RB + Coconut Oil. Performance parameters, economic viability, organ weights, meat quality and carcass characteristics were evaluated. Data were evaluated by the 5% Duncan test by SAS statistical software, version 8.0 (SAS, 2003). Safflower oil presented the highest values of carcass meat quantity and ham weight, while coconut oil presented the highest value of loin eye area and lowest fat area, resulting in a meat: fat ratio higher than too much. In the Economic Viability part, it was observed that the control diet presented lower cost per kg of feed (CR), while the lowest values of feed per kg of live weight of the animal (RV) were found in the ractopamine-fed and in the group control. The high values observed in vegetable oils negatively influenced the Economic Efficiency Index (IEE) results so that the results obtained showed a lower efficiency when compared to the control and ractopamine groups, this result could also be observed in the Cost Index (CI), due to the addition of oils that significantly increased the diets. The use of coconut oil to feed post-finishing pigs showed better results of the animals' RCG and RCCF when compared to safflower oil and ractopamine and can be used as a natural source to replace ractopamine for lean meat production.