日粮粗纤维水平对妊娠母猪繁殖性能的影响

为研究日粮粗纤维水平对妊娠母猪繁殖性能的影响。试验选用30头配种时间及体况均相近的二产PIC配套系母猪,按要求随机分成5组,妊娠期间分别饲喂含3%、5%、7%、9%和11%的粗纤维日粮,通过调节各组的饲喂量,使其所摄入的能量、蛋白、钙、磷等基本一致。结果表明,1）妊娠期间9%粗纤维组母猪背膘厚度的增加显著高于3%、5%、7%和11%粗纤维组（P〈0.05）,平均增重远大于11%粗纤维组（P〈0.01）,与3%、5%和7%粗纤维组差异显著（P〈0.05）;2）哺乳期9%粗纤维组母猪背膘厚度的损失低于其他各组（P〈0.05）,分别减少了1.50、0.66、0.83和0.83 mm,平均失重分别减少了5.77、2.60、0.87和0.68 kg;3）9%粗纤维组平均每窝产仔数提高极显著（P〈0.01）,比3%、5%、7%和11%粗纤维组分别提高了2.33、1.00、0.83和1.33头,第28 d断奶窝均重与其他各组差异极显著（P〈0.01）,分别高出12.16、8.63、7.91和5.68 kg。结果表明,提高妊娠母猪日粮粗纤维水平能够保持母猪体况,提高繁殖性能,当粗纤维含量达到9%时,效果最显著。

The Effect of Dietary Crude Fiber Levels on Reproductive Performance of Sows

This experiment was conducted to study the effects of dietary fiber levels on reproductive performance of sows.Thirty PIC sows,with similar parity and breeding time,were randomly divided into 5 groups.They were fed during pregnancy with 3%,5%, 7%,9% and 11% of crude fiber on food,and made the intake of energy,protein,calcium,phosphorus and other basically the same by adjusting the amount fed each group.The results show that:1)During pregnancy,9% crude fiber group increased the backfat thickness was significantly higher than 3%、5%、7% and 11% crude fiber groups(P<0.05),the average weight gain was significantly higher than11% fiber group(P<0.01),and 3%、5%、7% crude fiber groups(P<0.05);2)The backfat thickness in the 9% fiber group was significantly thinner than the other groups in the lactation(P<0.05),was reduced by 1.50 mm、0.66 mm、0.83 mm and 0.83 mm,the average weight loss were reduced by 5.77 kg、2.60 kg、0.87 kg and 0.68 kg;3)9% crude fiber group,the average little size,was increased significantly(P<0.01),compared with 3%,5%,7%,9% and 11% crude fiber group were increased by 2.33、1.00、0.83 and 1.33,the average 28th days weaning weight was significant higher than others group(P<0.01),specific values were 12.16 kg、8.63 kg、7.91 kg and 5.68 kg.The results show that increased levels of crude fiber diet of pregnant sows to maintain sow body condition and improve reproductive performance,when the crude fiber content of 9%,the effect is most significant.