Enhancement of carcass physical characteristics of male Bali pigs during the starter–grower phase through dietary supplementation of essential amino acids and choline

This study was conducted with the aim of knowing the effect of supplementation of a mixture of essential amino acids (lysine. methionine and tryptophan) and choline in standard feed in Bali pigs reared in starter (1 month) and grower (2 months) phases. The design used in this study was a completely randomized design (CRD) with four treatments and each treatment had 4 replications. so in this study 4 x 4 tails = 16 weaned male Bali pigs were used. The treatments that were tested on weaning Bali pigs were feed treatment which consisted of: treatment P0 : standard feed; P1 : Feed P0 + 0.50% mixture of essential amino acids (lysine. methionine and tryptophan) and choline; P2: feed P0 + 1% mixture of essential amino acids (lysine. methionine and tryptophan) and choline; and P3: feed P0 + 1.5% mixture of essential amino acids (lysine. methionine and tryptophan) and choline. In the starter phase fed CP 551 (for 1 month) and in the grower phase fed CP 552 (for 2 months). Observation data included slaughter weight, carcass weight. Carcass percentage, meat percentage. fat percentage and bone percentage. The results of the study found that the addition of a mixture of essential amino acids (lysine, methionine, tryptophan) and choline in the ration had a significant effect (P<0.05) on slaughter weight, carcass weight, physical composition of Balinese pig carcasses (meat and fat), but had no significant effect (P>0.05) on the physical composition of carcass bones.