Vol. 8, Issue 6, Part A (2023)

Author(s): Eyangshuman Das, Dhireswar Kalita, RN Goswami, Arundhati Phookan, Dimpi Khanikar and Nipu Deka

Abstract: Investigation was carried out to study the growth performance of HD-K75 pigs at original nucleus herd (ICAR-All India Co-ordinate Research Project on Pig, Assam Agricultural University, Khanapara, Guwahati, Assam). Body weights and daily body weight gain along with the effects of generation of birth and sex on them were studied. Data pertaining to 889 animals from 3rd crop of 14^th, 15^th, 16^th and 17^th generation born to 103 dams and 35 sires were utilized. Least-squares means (LSM) for body weights were found to be 0.994±0.002,9.845±0.009, 12.140±0.019, 27.821±0.033, 48.038±0.037 and 74.972±0.027 kg at birth, weaning, 2, 4, 6 and 8 months of age. LSM for daily body weight gain during birth to weaning, weaning to 8 months and birth to 8 months of age was 210.765±0.194, 328.937±0.141 and 308.248±0.113g. Highly significant effect of generation of birth and sex were observed in body weights and daily body weight gain. Pigs born to Generation 4 showed higher values for most of the studied traits. Body weights and daily body weight gain were significantly higher in males during earlier ages and in females shown during later ages.