ATTRACTION TO BLOOD AS A FACTOR IN TAIL-BITING BY PIGS
ATTRACTION TO BLOOD AS A FACTOR IN TAIL-BITING BY PIGS
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DOI：
10.1016/0168-1591(87)90008-6
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发表时间：
1987-04-01
影响因子：
2.3
通讯作者：
FRASER, D
中科院分区：
文献类型：
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作者：
FRASER, D
将猪尾大小的帆布模型用猪血浸渍或放置在平原上，并在2选择偏好测试中将其呈现给猪12天。猪的反应表现出巨大的、一致的个体差异：一些猪连续咀嚼模型，而另一些猪只轻微咀嚼;一些猪在血液覆盖的模型上咀嚼得更多，而另一些猪没有表现出偏好。平均而言，猪咀嚼血覆盖的模型比平原的模型要多得多。在第二个实验中，对猪进行选择测试，包括血液覆盖模型和普通模型，结果显示，与仅使用普通模型观察到的基线水平相比，咀嚼显著增加。这表明，这种强烈但高度可变的血液反应可以解释为什么一个相对较小的尾部损伤可以刺激一个大的，但不可预测的增加咬尾猪。
Canvas model, about the size of a pig''s tail, were impregnated with pigs'' blood or left plain, and were presented to pigs for 12 days in a 2-choice preference test. The pigs showed large, consistent, individual differences in response:some pigs chewed the models continuously while others chewed only slightly; some chewed much more on the blood-covered model, while others showed no preference. On average, the pigs chewed considerably more on the blood-covered model than on the plain one. In a second experiment, pigs presented with a choice test involving a blood-covered and a plain model showed a significant increase in chewing over a baseline level seen with plain models only. It is suggested that this strong but highly variable response to blood could explain how a relatively minor tail injury can stimulate a large but unpredictable increase in tail-biting among pigs.