【摘要】 试验选择体况健康、年龄胎次、窝产仔数、产期尽量一致的12头长白经产母猪，随机分成4组，每组3头，然后再随机确定各组饲喂何种形态的开食料（Ⅰ组颗粒料、Ⅱ组碎粒料、Ⅲ组粉料、Ⅳ组膨化料），比较乳猪开食情况、生长状况及耗料情况，结果表明：Ⅰ组、Ⅳ组之间差异不显著；Ⅱ组、Ⅲ组之间差异不显著，但是，Ⅰ组、Ⅳ组与Ⅱ组、Ⅲ组之间差异极显著。Ⅰ组平均个体重比Ⅱ组、Ⅲ组分别重1．57kg（60日龄），1．87kg（60日龄）；Ⅳ组平均个体重比Ⅱ组、Ⅲ组分别重1．82kg（60日龄）、2．12kg（60日龄），四组饲料的料肉比分别为Ⅰ组：1．76：1、Ⅱ组：1．84：1、Ⅲ组：1．87：1、Ⅳ组：1．75：1。更多还原

【Abstract】 Litter weaning Weight, 12 Landrace sow that almost have the same ouput are selected tO be divided at random into 4 groups with 3 pigs in each one.Then different opening foods to be used in each group are determined by chance to compare the situation of feeding timing, growing and food-comsuming of pocket, the opening foods are composed of 1. particle Feed 2. Broken feed 3. Flour Feed 4. Expanding Feed .The result of comparison showes that: litile difference exists between group 1 & 4 as well as group 2 & 3,but the result of group 1/3 and group 2/4 appear very different.The average weight each in group 1 is 1.57 kg(60 days) more than that in group 2 and 1 .87 kg(60 days) more than that in group 3;The average weight each in group 4 is 1. 82 kg(60days) mere than that in group 2 and 2. 12 kg(days) more than that in group 3. The ratio of feed and adding meat weight for each group are Group1: 1 .76: 1,Group 2: 1 .84: 1,Croup 3: 1 .87: 1,Group 4:1 .75: 1.更多还原