• C.P. NJOKU Department of Animal Production and Health, Federal University of Agriculture, Abeokuta, Nigeria
  • J.A. ADEGBITE Department of Animal Production and Health, Federal University of Agriculture, Abeokuta, Nigeria
  • O.S. AKINOLA Department of Animal Production and Health, Federal University of Agriculture, Abeokuta, Nigeria
  • O.Y. AYO-AJASA Department of Animal Production and Health, Federal University of Agriculture, Abeokuta, Nigeria
  • L.T. EGBEYALE Department of Animal Production and Health, Federal University of Agriculture, Abeokuta, Nigeria
  • T.A. OKUNNIYI Department of Animal Production and Health, Federal University of Agriculture, Abeokuta, Nigeria


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.




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