Fakae B B
Department of Veterinary Parasitology and Entomology, University of Nigeria, Nsukka.
Vet Parasitol. 1990 May;36(1-2):123-30. doi: 10.1016/0304-4017(90)90100-p.
A survey was conducted in the Nigerian derived savanna (from August 1987 to July 1988) on the seasonal fluctuations in the composition of Haemonchus contortus burden of naturally infected West African Dwarf sheep and goats. During this period 117 abomasa collected from locally slaughtered animals were processed. Male, female as well as immature worms were enumerated. The incidence of Haemonchus infection was high (77.8-100%) with no definite seasonal distinction. There was however, a clear seasonal trend in the worm burden of animals; higher burdens were evident during the rainy rather than the dry season. There was no significant hypobiosis; Haemonchus contortus survived in the host during the unfavourable dry season (November to March) as adults.
1987年8月至1988年7月，在尼日利亚衍生的稀树草原上进行了一项调查，研究自然感染的西非矮种绵羊和山羊体内捻转血矛线虫感染情况的季节性波动。在此期间，对从当地屠宰动物收集的117个皱胃进行了处理。对雄虫、雌虫以及未成熟虫体进行了计数。捻转血矛线虫感染率很高（77.8%-100%），没有明显的季节性差异。然而，动物体内虫负荷存在明显的季节性趋势；雨季的虫负荷高于旱季。没有明显的休眠现象；捻转血矛线虫在不利的旱季（11月至3月）以成虫形式在宿主体内存活。
