Níveis de suplementação de bovinos em pastejo de mombaça (Panicum maximun cv. Mombaça), em terminação

Abstract

The objective of this study was to evaluate the cattle performance in semiconfinement receiving two levels of supplementation energetic proteic, and assess the viability economic. Used 68 animals, not castrated, Nellore , with initial weight of 388 kg on Mombaça pasture (Panicum maximum cv. Mombaça), in semiconfinement regime for a period of 129 days, fed diet containing 18 % crude protein (CP) and 73% of total digestible nutrient (TDN). Two supplementation levels were tested, treatment 1: 1,2% of body weight and treatment 2: 1,8% of body weight, based on dry matter intake, evaluated gain AOL and EGS, taken with the use of ultrasound and PCQ, performance, conformation and evaluated finih after slaughtering, also evaluated the economic, taking into account only the cost of food. The performance of animals fed with higher nutritional level was higher, and the animals had, on average, 12 kg weight gain, yield and finishing more than treatment 1,2% live-weight. Animals treated with 1.2% live-weight, showed better results in relation to cost-effective than treatment with 1.8% of PV in which the investment was lower.