不同断奶日龄仔猪血液中生长相关激素的检测

为探讨断奶日龄对仔猪血液生长相关激素指标的影响,试验从8窝"杜×长×大"仔猪中选取出生日龄相近、初生体重一致的健康仔猪24头,随机分为4个试验组,每个试验组设6个重复,每个重复1头仔猪,4组仔猪分别于14、21、28、35日龄断奶。至42日龄时,所有仔猪宰杀采血,利用放射免疫分析法进行血浆生长激素(GH)、胰岛素(INS)、三碘甲状腺原氨酸(T3)和四碘甲状腺原氨酸(T4)含量检测。结果表明,不同日龄组断奶仔猪血浆GH、T3和T4水平无显著性差异(P0.05);35日龄组断奶仔猪血浆INS含量显著高于14日龄断奶组(P0.05)。结果提示,不同断奶日龄对仔猪生长相关激素无显著影响。

Determination of Blood Growth Related Hormones in Different Weaning Age Piglets

The aims of this study were to investigate the effects of weaning age on plasma growth related hormones indexes in piglets.A total of 24 crossed-bred piglets from 8 litters with similar age and body weight were randomly assigned to 4 groups with 6 replicates in each group and 1 piglet in each replicate.The 4 groups were 14 days of age weaning group,21 days of age weaning group,28 days of age weaning group and 35 days of age weaning group,respectively.All piglets were slaughtered at 42 days of age and blood samples were acquired.The plasma GH,INS,T3 and T4 contents of piglets were measured by radioimmunoassay.The results showed that plasma GH,T3 and T4 contents of piglets were no significant difference among all groups (P>0.05);INS contents in 35 days of age weaning groups were higher than that in 14 days of age weaning groups(P<0.05).The results indicated that the effect of different weaning age on growth related hormones of piglets is no significant different.