CARCASS YIELD AND PORK QUALITY CHARACTERISTICS OF GROWING PIGS TO FEED WITHDRAWAL PERIODS AND ASCORBIC ACID SUPPLEMENTATION
Keywords:ascorbic acid; Carcass; growing pigs; pork quality; proximate; restriction
A 3×3 factorial experiment was carried out to determine carcass yield and pork quality of pigs in humid tropics to feed withdrawal periods and ascorbic acid supplementation. Fifty-four mixed breed weaner pigs with mean weight of 5.5±0.3 kg were grouped on weight equalization into 9 treatments with 6 pigs per treatment and 2 pigs per replicate. Treatments 1,4 and 7 were fed ad libitum with ration containing ascorbic acid at the rates of 0, 1500 and 2500 mg/kg feed, respectively. Treatments 2, 5 and 8 were subjected to two hours feed withdrawal period and ascorbic acid supplementation of 0, 1500 and 2500 mg/kg feed, respectively. While those on treatments 3, 6 and 9 were on 4 hours feed withdrawal period with ascorbic acid levels of 0, 1500 and 2500 mg/kg feed, respectively. Carcass yield, meat quality and proximate composition were assessed on twentieth week. Carcass yields were significantly (P< 0.05) influenced by feed withdrawal period and ascorbic acid supplementation. Pigs on two hours withdrawal period and ascorbic acid supplementation at 1500 mg/kg feed had the highest values for carcass parameters. Two-hours feed withdrawal period and ascorbic acid supplementation of 1500 mg/kg feed influenced carcass yield, pork quality and proximate composition of growing pigs.