Variations in the strength of maternal behaviour and its conflict with flocking behaviour in Dalesbred, Jacob and Soay ewes

Elizabeth Shillito Walser, P. Hague, M. Yeomans
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Abstract

Dalesbred, Jacob and Soay ewes were tested in a T maze to observe the behaviour of the ewes when given a choice between going near to their own lambs or to a group of ewes and lambs from the flock. The sheep were tested when the lambs were 2, 9, 21 and 42 days old. Most of the ewes ran to their lambs as a first choice. There was no breed difference in time to run or choice made with all the age groups, but the ewes moved away from the lambs more quickly as the lambs got older. The Dalesbred ewes stayed close to their lambs for longer than the other ewes when the lambs were 2 and 9 days old. The Soay ewes spent the shortest time with their lambs when the lambs were 40 days old, and they also showed a greater tendency to move to the flock than the Dalesbred and Jacobs. The Dalesbred ewes returned to their lambs more often than other breeds and the Jacobs tended to stay at the junction of the maze. It is suggested that maternal behaviour is strongest in Dalesbreds with young lambs and the flock tendency highest in Soays with older lambs.

Dalesbred, Jacob和Soay母羊母性行为强度的变化及其与羊群行为的冲突
Dalesbred, Jacob和Soay母羊在T形迷宫中进行了测试,观察母羊在选择接近自己的羊羔或接近一群母羊和羊群中的羊羔时的行为。分别在羔羊2日龄、9日龄、21日龄和42日龄进行测试。大多数母羊把自己的小羊羔作为第一选择。所有年龄组的母羊在逃跑时间和选择上没有品种差异,但随着羔羊年龄的增长,母羊离开羔羊的速度更快。当羊羔2天和9天大的时候,戴尔斯种的母羊比其他母羊待在它们身边的时间更长。Soay母羊在羊羔40天大的时候和它们在一起的时间最短,而且它们也比Dalesbred母羊和Jacobs母羊更倾向于融入羊群。戴尔斯品种的母羊比其他品种的母羊更容易回到自己的羊羔身边,而雅各布品种的母羊则倾向于呆在迷宫的交界处。这表明母性行为在有幼羊羔的达勒斯种中最强,而羊群倾向在有老羊羔的索伊种中最高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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