β-CD-半胱胺对母猪繁殖性能和仔猪生长性能的影响

Effects of β-CD-cysteamine on Reproduction of Sows and Growth Performance of Piglets

本试验旨在研究母猪妊娠后期和泌乳期添加β-CD-半胱胺对母猪繁殖和仔猪生长性能以及母猪妊娠后期血清中胰岛素样生长因子-Ⅱ(IGF-Ⅱ)和初乳中免疫球蛋白G(IgG)的影响。选择30头妊娠85 d的健康长×大杂交经产母猪随机分成3组:对照组、处理1组和处理2组,每组10头母猪,单栏饲养。结果表明:(1)3组母猪的体况评分、第5天和第14天有效乳头数、发情间隔、母猪窝产仔数、活仔数、产弱仔率、仔猪初生窝重、初生个体重以及断奶窝重、断奶个体重和断奶育成率均无显著差异(P>0.05);但试验组母猪日平均泌乳量、仔猪断奶窝增重和初生重≤1 200 g的仔猪育成率有提高的趋势(P值分别为0.16、0.14和0.09);(2)试验组母猪110 d的IGF-Ⅱ水平显著高于对照组(P<0.01),并提高初乳IgG水平73.13%(P>0.05)。在母猪妊娠后期和泌乳期日粮中连续添加β-CD-半胱胺,可以极显著提高妊娠110 d血清中IGF-Ⅱ的水平,并有提高初生重≤1 200 g的仔猪育成率、母猪泌乳量、仔猪断奶窝增重和初乳IgG水平的趋势。

To investigate the effects of adding β-CD-cysteamine to sows diets during late gestation and lactation on reproduction of sows, growth performance of piglets and Insulin-like growth factors-Ⅱ （IGF-Ⅱ）in serum and Immunogolbulin G （IgG）in colostrum of sow,30 multiparous sows（Landrace × Large White）on day （82 ±2） of gestation were randomly allocated into 3 groups： control group（basal diet）and two treatments, respectively. The results showed that 1） body condition,valid mammillae on day 5 and 14 after farrowing, numbers born, number of live pigs at birth percentage of low-birth-weight, average pig weight at birth and weaning,total litter weight at birth and weaning,and percentage of survival for 3 groups were not affected by treatment（P〉0.05）, but average milk production , weight gain of litter at weaning and percentage of survival of pigs whose birth weight≤ 200 g of two treat groups sows was elevated by diet;2）the concentration of IGF-Ⅱin sows serum of two treatments on day 110 of gestation was increased significantly（P〈0.01） ,and IgG in colostrum of sow were affected by treatment in some exent （P = 0.13）. In conclusion, adding β-CD-cysteamine to sows diets during late gestation and lactation elevates IGF-Ⅱ in sow serum on day 110 of pregnancy significantly （P〈0.01）, and improves milk production of sow, total weight gain at weaning,survival rates （ birth to weaning ） of piglets whose birth weight≤ 200 g, and IgG in colostrum of sow.