初产和经产湖羊母性行为比较研究

Comparison of Maternal Behavior of Primiparous and Multiparous Hu Sheep

良好的母性行为是仔畜存活和适应环境的关键,故母性行为与畜牧生产的收益密切相关。本研究以99只湖羊为研究对象,通过录像资料记录数据,利用生物统计方法探讨初产、经产母羊母性行为的差异,旨在发现湖羊母性行为的表现规律,以期为制定适合其生长繁育的管理措施提供依据。结果表明:初产母羊的分娩时间比经产母羊的长,且在产双羔组差异显著(P<0.05),在单羔和多羔组中差异不显著(P>0.05)。两组母羊抛弃羔羊和偷盗羔羊发生率均差异显著(P<0.05),而寻找、舔舐和踩踏行为无显著性差异(P>0.05);拒绝哺乳行为和哺乳行为差异均极显著(P<0.01);两组羔羊7日龄重差异显著(P<0.05)。综上可知,初产母羊比经产母羊更容易表达异常母性行为。

Good maternal behavior is the key to survival and adaptation to the environment of the newborn animal, it is closely related to income and maternal behavior of livestock production. In this study, data from 99 Hu sheep were recorded by the video using to study the difference between primiparous and multiparous ewes＇ maternal behavior the biological statistic method, aimed at discovering the performance rules of maternal behavior in Hu sheep in order to develop appropriate management measures which provide the basis for growth and breeding. The results showd that primiparous ewes delivery time was longer than multiparous ewes, and the relationship was significantly different in the double lamb production group（P〈0.05）, but there were no significantly difference in single and multiple lambs of two groups（P〈0.05）. Primiparous ewes were more likely to abandon a lamb and steal a lamb（P〈0.05）. There was no significant difference in behaviors of searching, grooming and trampling lambs between two groups（P〈0.05）. Nursing behavior and refusing to nursing behavior were very significant difference between two groups（P〈0.01）. Significant difference was found at 7 d weight of lambs between two groups（P〈0.05）. Therefore, primiparous ewes were more likely to show negative maternal behavior than multiparous ewes.