|
Mulesing involves the removal of strips of wool-bearing skin from around the breech (buttocks) of a sheep to prevent flystrike (myiasis).〔 〕 The wool around the buttocks can retain feces and urine, so tissue that regrows in the place of the removed skin is less likely to attract flies. Mulesing is a common practice in Australia as a way to reduce the incidence of flystrike, particularly on highly wrinkled Merino sheep.〔 Mulesing is considered by some to be a skilled surgical task〔(【引用サイトリンク】Standard Operating Procedures – sheep Mulesing )〕 although it may be performed by unskilled persons. Mulesing is a controversial practice. The National Farmers Federation says that "mulesing remains the most effective practical way to eliminate the risk of 'flystrike' in sheep" and that "without mulesing up to 3,000,000 sheep a year could die a slow and agonising death from flystrike". "The Australian Veterinary Association (AVA) recognises the welfare implications of mulesing of sheep. However, in the absence of more humane alternatives for preventing breech strike, the AVA accepts that the practice of mulesing should continue as a sheep husbandry procedure". The AVA also supports the use of analgesics and the accreditation of mulesing practitioners. The Australian Royal Society for the Prevention of Cruelty to Animals accepts mulesing when the risk of flystrike is very high, when it is done properly, and even then only as a last resort. The animal rights organisation PETA strongly opposes mulesing, says the practice is cruel and painful, and that more humane alternatives exist, and claim that sheep can be spared maggot infestation through more humane methods, including special diets and spray washing.〔http://www.peta.org/issues/animals-used-for-clothing/mulesing.aspx〕 In July 2009, representatives of the Australian wool industry scrapped an earlier promise, made in November 2004, to phase out the practice of mulesing in Australia by 31 December 2010.〔〔 〕 Mulesing is being phased out in New Zealand. ==History== Mulesing is named after John WH Mules, who developed the practice. While shearing a ewe which had suffered several flystrikes, Mules's hand slipped and his blade shears removed some skin from her hind end. After performing this procedure on his other sheep, Mules noticed that it prevented the occurrence of flystrike. The procedure was refined, experimented with, and demonstrated to reduce flystrike. It was approved for use in Australia in the 1930s. In Australia, it is thought that the fly primarily responsible for flystrike, ''Lucilia cuprina'', was introduced from South Africa in the nineteenth century. Originally, mulesing was carried out on sheep after they were weaned because it was considered "too rough" for lambs. However, lambs appear to cope with the procedure better than older sheep as the actual area of skin fold removed on young lambs is quite small, and they are protected for an extra year as well. For young lambs older than two months, the discomfort period seems to last for approximately two weeks by which time healing is almost, if not entirely, complete. Current codes of practice ban mulesing for sheep over 12 months of age.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「mulesing」の詳細全文を読む スポンサード リンク
|