1)釧路地区NOSAI阿寒釧路支所(〒085-0215 北海道阿寒郡阿寒町中央3-13-1) 2)釧路地区NOSAI阿歴内家畜診療所(〒088-2271 北海道川上郡標茶町阿歴内) |
(1999年8月4日受付・1999年11月25日受理)
要 約
乳牛の子宮捻転において,患牛の後肢を吊り上げて,降ろすことにより容易に捻転を整復することができた.捻転方向を上にして牛を寝かせ,両後肢の球節の直上をロープで結束し,トラクターで後躯を約1m吊り上げた後に,術者は産道より胎子を把握しながら静かに降ろすことにより捻転を整復できた.全例とも無麻酔下で行った.3年間,35例の子宮捻転に対して本法を試み,29例は本法のみで整復でき,23例の胎子が生きて生まれた.28例は左方捻転,7例は右方捻転であった.母体回転法を併用したのは6例で,そのうち5例の胎子が死亡していた.捻転整復後,分娩まで24時間以上経過した4例の胎子はすべて死亡していた.整復中および整復直後,全例の母牛に異常は認められなかった.本法は短時間かつ少人数で実施可能であり,体力も必要としないことから,臨床的応用価値が高いと思われた. ―キーワード:乳牛,後肢吊り上げ法,トラクター,子宮捻転.
--------------------日獣会誌 53,297〜301(2000)
Correcting Uterine Torsion in Dairy Cows by Elevating the Animalsユ Hind LegsMitsuo ISHII*, Takashi KANAMORl, Masaji ENDO, Isamu TSURUOKA, Toshinori NOZAWA, Takeshi FUKUDA, Yasuaki YAMAMOTO, Tsuyoshi JITSUKAWA, Tsutomu SHIMAMURA, Akihiko UTSUMI and Shinichi MATSUI
SUMMARY Elevating the hind legs and lowering the animals into a lying position easily corrects
uterine torsion in dairy cows. The animals were laid so that the direction of torsion was uppermost,
then the hind legs were tied together with rope positioned immediately above the fetlocks. A tractor
hoist raised the rear half of the body to a height of about 1 meter. The specialist in charge held the
fetus via the parturient canal as the animal was gently lowered again, thus correcting the torsion. No
anesthesia was used in any of these procedures. Over a period of 3 years, 35 cows (28 with left torsion
and 7 with right torsion) were treated in this way. In 29 of those cases, this method alone was used;
of these, 23 calves lived after parturition and torsion correction. In 6 cases, the elevated-hind-legs
method was combined with the mother-cow rotation method. Five of the 6 fetuses treated in this way died.
In 4 cases in which more than 24 hours lapsed between torsion correction and parturition, all the fetuses
were stillborn. In no instances were abnormalities observed in the mother cows during or immediately
after torsion correction. Because it is fast and requires a small number of peolpe and no great physica1
strength, this method is considered highly useful for clinical application.
--------------------J. Jpn. Vet. Med. Assoc., 53, 297〜301 (2000) |