Pandey V S, Ouhelli H, Dakkar A, Cabaret J
Institut Agronomique et Vétérinaire Hassan II, Rabat, Morocco.
Ann Rech Vet. 1990;21(4):259-66.
The epidemiology of gastrointestinal helminths of sheep on permanent pastures in Morocco was studied by monthly examination of faeces of ewes for helminth eggs and by use of batches of 3 tracer lambs each month from December 1979 to November 1980. The main helminth genera encountered were Teladorsagia, Haemonchus, Trichostrongylus and Moniezia, with Nematodirus, Cooperia, Oesophagostomum and Trichuris occasionally recorded. The faecal egg counts of ewes showed 2 peaks; the first in March due to the acquisition of larvae during the rainy season and periparturient rise, the second in October probably due to maturation of inhibited larvae. The worm burdens of tracer lambs showed that there was a gradual accumulation of nematodes from December, reaching a peak in May; an absence of infection in July and August during the dry period, and a second peak in November. Infection by Moniezia was higher during the dry season.
1979年12月至1980年11月期间，通过每月检查母羊粪便中的蠕虫卵以及每月使用一批3只示踪羔羊，对摩洛哥永久牧场上绵羊的胃肠道蠕虫流行病学进行了研究。所遇到的主要蠕虫属为细颈线虫属、血矛线虫属、毛圆线虫属和莫尼茨绦虫属，偶尔也记录到捻转血矛线虫属、古柏线虫属、食道口线虫属和鞭虫属。母羊的粪便虫卵计数出现两个高峰；第一个高峰在3月，这是由于在雨季期间获得幼虫以及围产期上升所致，第二个高峰在10月，可能是由于受抑制幼虫的成熟。示踪羔羊的蠕虫负荷表明，从12月开始线虫逐渐积累，5月达到高峰；在7月和8月的干旱期没有感染，11月出现第二个高峰。莫尼茨绦虫感染在旱季更高。
