논문 상세보기
pp.58-65
Newborn piglets are routinely subjected to several treatments shortly after birth, one of which is tail-docking. Tail-docking, which is carried out without an anesthetic when the piglet is 3 to 4 days old, is intended to prevent the severe injuries that can occur when pigs bite each other’s tails. The study was performed in slaughterhouses to determine how much tail-docking prevented tail-biting and how much it caused clinical problems such as amputation neuroma. One thousand pigtails were collected from 3 slaughterhouses in different provinces and tail length and tail-biting injuries were examined. Among them, 659 tail tissues were examined for clinical problems like amputation neuroma. The collected tails were divided into 3 groups according to the length of the tail, which was defined as long (n=136, 75% of the tail remained compared to the referred intact tail length of 30.6±0.6 cm of crossbred Landrace×Yorkshire dam×Duroc sire; LYD), medium (n=694, 50% of the tail remained), and short (n=170, 25% of the tail remained). The results showed that 4.3% of 1000 tails had biting injuries and 58.7% of 659 tails had amputation neuromas. There was no significant association between the tail-biting injury and tail lengths (p=0.953). However, the tail-biting injuries differed significantly by the province (p<0.001), and the frequency of amputation neuromas also appeared more frequently in longer tail lengths (p<0.001). The results indicated that tail-biting behavior was not influenced by tail-docking but might be influenced by the housing system and/or management practices.
Ⅰ. 서론
Ⅱ. 재료 및 방법
1. 꼬리 길이와 직경(Tail length and diameter)
2. 육안병변: 꼬리 씹기에 의한 상처(Injury by tail biting)
3. 꼬리 가검물 채취 및 조직병리검사(collection andpreparation of tail tissue)
4. 꼬리 길이에 따른 그룹분석
5. 통계적 분석
Ⅲ. 결과
1. 꼬리 상처, 꼬리 길이와 직경(Tail biting injury, lengthand diameter)
2. 절단 신경종(Amputation neuromas)
Ⅳ. 고찰
Ⅴ. 요약
Ⅵ. 참고문헌
