EFFECTS OF GROUP-REARING OR PARTIAL ISOLATION ON LATER SOCIAL-BEHAVIOR OF CALVES
EFFECTS OF GROUP-REARING OR PARTIAL ISOLATION ON LATER SOCIAL-BEHAVIOR OF CALVES
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DOI：
10.1016/0003-3472(78)90116-1
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发表时间：
1978-01-01
期刊：
影响因子：
2.5
通讯作者：
LEAVER, JD
中科院分区：
文献类型：
--
作者：
BROOM, DM;LEAVER, JD
小牛要么在空间上隔离，但在视觉上没有隔离，要么在8个月后集体饲养，然后聚集在一起。基于竞争相互作用的排名顺序在8个月和20个月时相似。几乎所有群体饲养的动物的排名都高于所有隔离饲养的动物。最常见的近邻关系出现在群体饲养的动物之间，尤其是来自同一饲养群体的动物。在8点钟时，在相邻围栏中隔离的小牛之间也经常发生关联。隔离饲养的动物很少与群体饲养的动物联系在一起，并且独处的时间更多。体重与饲养条件或行为措施无关。排名在8到20之间的增加或减少与体重增加的速度比平均速度快或慢有关。
Calves were either isolated, spatially but not visually, or group-reared for 8 mo. and then kept together. Rank orders based on competitive interactions were similar at 8 and 20 mo. Almost all group-reared animals were higher in rank than all isolation-reared animals. The most frequent nearest neighbor associations were between group-reared animals, especially those from the same rearing group. Also frequent at 8 mo. were associations between calves which were isolated in adjacent pens. Isolation-reared animals associated infrequently with group-reared animals and spent more time alone. Body weight was not correlated with rearing conditions or with behavioral measures. Increase or decrease in rank between 8 and 20 mo. was associated with faster or slower than average weight gain.