Bài báo khoa học

This research evaluates the reproductive performance of GF24 sows mated with GF280, GF337 and GF399 boar lines in the industrial pig production system in central Vietnam. The research was caried out in 5 intensive pig farms in Quang Binh, Quang Tri, Thua Thien Hue, Quang Ngai, and Binh Dinh provinces. A total of 4844 litters from the 1st to 4th parity of GF24 sows mated with GF280, GF337, and GF399 boar lines were recorded. The results show that GF24 sows mated with GF280, GF337, and GF399 boar lines have a high reproductive performance and it is similar among the boar lines. The litter size and body weight at farrowing and at weaning are 12.7−13.2 piglets/litter; 1.37−1.40 kg/piglet, and 11.4−11.6 piglets/litter; 5.89−6.00 kg/piglet weaned, respectively. The integrated traits of the number of piglets weaned/sow/year, and the body weight of piglets weaned are 28.4−29.1 piglets/sow/year and 171.8−172.9 kg piglets weaned/sow/year, respectively. The reproductive performance of GF24 sows is high from the 1st parity to the 4th parity ranging from 28.46 to 28.94 piglets, and there is no difference between litters. The GF24 sows and GF280, GF337, and GF399 boar lines should be used in the industrial pig production system to increase the reproductive performance of sow production