皖系白猪早期生长发育规律的研究

Study on the Growth Development Law of Early Stage Wanbai Pig

皖系白猪2世代猪从初生到90日龄生长迅速,到90日龄时体重达初生重的26倍。断奶对生后的生长发育的影响比较大,但早期断奶可及早锻炼仔猪的采食,并能提高生长期的采食量,从而提高断奶后生长速度。其早期的生长发育规律可用Gompertz模型进行拟合,拟合精度为0.996 3,据此模型可建立皖系白猪的早期生长曲线,为其进一步选育提供理论依据。

Wanbai meat-type of pig line grows very fast from birth to 90 d.The weight at 90 d is 26 times than that of birth. Weaning affects growth after birth.Early weaning is able to wain taking food and making them eat more, and providing the growth speed. The Gompertz curve （R^2 = 0.9963）is the best model to describe the growth-development law of wanbai treat-type of pig line at early stage, which will provide theoretical base for further breeding.