[討論]豬咬尾發生的前兆

中國西翁 · 發表于 2006-10-1 11:18:11

2004年8月Asian Economic News報道：荷蘭科學家發現當豬在應激，煩躁狀態下，會伸直自己的尾巴。這種現象的出現標志著不久豬群里將發生咬尾........
......豬發生咬尾的前2到3天，牠們伸直尾巴，并把尾巴藏于兩腿之間，這樣的狀態一直持續到咬尾的發生。研究者們觀察了1000頭沒有斷尾的豬。

我簡單把原文意思介紹了一下，呵呵翻譯的不好多原諒。
原文如下：
Pigs straighten tails when bored, Dutch scientists say
Asian Economic News, August 23, 2004

Pigs straighten their tails when bored and stressed, Dutch scientists have detected.
This in turn can serve as a warning sign that within days they will start biting each other's tails, a habit that can cause serious injury and death.
Two to three days before pigs start biting each others' tails, they straighten their tail and hide it between their hind legs,'' Johan Zonderland, a researcher from Wageningen University in the Netherlands told Kyodo News. ''The animals stay like that for days until they start biting.''
Zonderland and his collaborators carried out their research over a period of three months. They carefully observed 1,000 pigs that still had their tails.
Most pig farmers cut off their pigs' tails to avoid the risk of tail-biting. Only biological farmers leave the animals as they are.
The research fits into a growing discussion about animal welfare. Animal rights groups say intensive agriculture creates psychological and physical health problems as too many pigs are gathered together in a small area.

It is the first time in the world that in-depth research has been carried out into the reasons behind "tail-biting,'' said Zonderland, whose country is one of the world's major exporters of pork products. These results will make it easier for farmers to detect problems in time. They can give the pigs some extra straw or toys to play with to prevent them hurting one another.''

另外，家畜生態2001，22（2）；14-21，崔衛國，包軍所發表文章《異物特征和斷尾處理對斷奶仔豬啃咬行為及其生產性能的影響》中有如下論述：

在對發生咬尾的個體進行觀察時發現, 尾巴的空間位置似乎與咬尾有關, 但需要進一
步深入研究。M cGlone (1990) 發現, 當在特定環境下仔豬咬尾時, 豬群中會有近1/3 的豬將尾巴下垂, 而在發生咬尾之前, 尾巴都表現為抬高或卷曲。尾巴的空間位置在豬群中有傳遞信息的作用, 尾巴下垂可以保護個體的尾巴不被咬到.