青贮苜蓿及不同添加水平的苜蓿草粉对初产母猪繁殖性能、初乳成分及其仔猪生长性能的影响

Effects of Alfalfa Silage and Different Levels of Alfalfa Meal on Reproductive Performance and Colostric Compositions of Primiparous Sows,and Growth Performance of Their Piglets

在初次妊娠母猪的日粮中分别添加10%青贮苜蓿或10%、15%、20%的苜蓿草粉,探讨了青贮苜蓿及不同添加水平的苜蓿草粉对初产母猪繁殖性能、初乳成分及其仔猪生长性能的影响。结果表明:与对照组相比,各试验组母猪在妊娠期背膘厚度增加量和哺乳期背膘厚度损失量上均无显著差异;各苜蓿草粉组在初生仔猪总数、产活仔数、产活仔率、仔猪的断奶重等指标上均有所上升;15%、20%苜蓿草粉组母猪初乳的乳脂率显著升高(P<0.05);各试验组母猪初乳中的乳总固形物含量显著升高(P<0.05)。在不同处理中,以20%苜蓿草粉添加组的综合效果最为理想。

In this study,10% alfalfa silage or 10%,15%,20% alfalfa meal was added into the diets of the first-time pregnant sows,and the effects of alfalfa silage and different levels of alfalfa meal supplement on the reproductive performance and colostric compositions of primiparous sows,and the growth performance of their piglets were explored. The results indicated that：there were no significant differences in the increment of back-fat thickness of sows in gestation period and the loss of back-fat thickness of sows in lactation period among different test groups; the sum of newly-born piglets,number of live-born piglets,rate of live-born piglets,and weaning weight of piglets in various alfalfa meal supplement groups were higher than those in the control group; the colostric butter-fat rate of sows in 15% or 20% alfalfa meal supplement groups was significantly higher than that in the control group（ P〈0.05）; the content of total solids in colostrum of sows in all test groups was significantly higher than that in the control group（ P〈0.05）. Among different treatments,the treatment of 20% alfalfa meal supplement obtained the best comprehensive effects.