红马赛和杜泊母羊对捻转血矛线虫人工感染及随后自然感染的反应
Response to artificial and subsequent natural infection with Haemonchus contortus in red Maasai and Dorper ewes.
作者信息
Wanyangu S W, Mugambi J M, Bain R K, Duncan J L, Murray M, Stear M J
机构信息
National Veterinary Research Centre, KARI Muguga, Kikuyu, Kenya.
出版信息
Vet Parasitol. 1997 May;69(3-4):275-82. doi: 10.1016/s0304-4017(96)01129-6.
Maiden Red Maasai and Dorper ewes were kept indoors and artificially infected with a single oral dose of 5000 infective larvae of Haemonchus contortus. Their faecal egg counts (FEC) and packed red cell volumes (PCV) were monitored for 9 weeks. They were then treated with an anthelmintic and turned out to graze together on a pasture contaminated with H. contortus. They grazed this pasture for 14 months and were allowed to mate and lamb. While at pasture the ewes were monitored for FEC, PCV and peripheral eosinophilia. Red Maasai ewes had significantly lower FEC, and for certain periods, significantly higher PCV and peripheral eosinophilia. During the periparturient period, FEC were about twice as high in the Dorper breed as the Red Maasai. These results confirm and extend previous reports on the superiority of the Red Maasai breed in East Africa.
梅登红马赛羊和杜泊母羊被关在室内，经口服单剂量5000条捻转血矛线虫感染性幼虫进行人工感染。对它们的粪便虫卵计数（FEC）和红细胞压积（PCV）进行了9周的监测。然后用驱虫药对它们进行治疗，之后将它们放到受捻转血矛线虫污染的牧场一起放牧。它们在这个牧场上放牧了14个月，并进行交配和产羔。在牧场放牧期间，对母羊的粪便虫卵计数、红细胞压积和外周血嗜酸性粒细胞增多情况进行了监测。红马赛母羊的粪便虫卵计数显著较低，在某些时期，其红细胞压积和外周血嗜酸性粒细胞增多情况显著较高。在围产期，杜泊品种的粪便虫卵计数约为红马赛品种的两倍。这些结果证实并扩展了先前关于东非红马赛品种优越性的报道。
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