Every six YaNan gilts, which breeding-weight was 55. 84 70. 16 and 84. 24kg respectively, fed 1. 13 1. 61 2. 09kg/h. d during gestation 0 to 80day and 1. 57 2. 24 2. 91kg/h.

• 本实验选用初配体重分别为56.；8、70