临河地区舍饲羔羊自然感染主要消化道线虫情况的观察

发布时间：2018-08-23 18:44

【摘要】：近年来,内蒙古地区肉羊养殖业由散养化向规模化、集约化转变。但是在此过程中,在舍饲条件下对绵羊消化道线虫病的流行情况尚不清楚。针对这一情况,本文在对巴彦淖尔市临河区舍饲绵羊消化道线虫病的流行规律进行调查研究的基础上,对该地区不同出生时间的全舍饲羔羊首次感染消化道线虫的排卵情况进行了动态观察。结果显示:6月出生的夏羔在9月龄以前没有观察到消化道线虫虫卵的排出;9月出生的秋羔在翌年4月首次观察到了奥拉齐细颈线虫虫卵,羔羊平均月龄为7月龄;12月出生的冬羔在翌年的6月首次观察奥拉齐细颈线虫虫卵,最早排卵羔羊为6月龄;3月出生的春羔在翌年的9月首次检出捻转血矛线虫(Haemonchus.contortus)、蛇形毛圆线虫(Trichostrongylus.colubriformis)和奥拉齐细颈线虫(Nematodirus.oiratianus)3种消化道线虫虫卵,羔羊平均月龄为6月龄。舍饲羔羊1a中首次发现消化道线虫虫卵的顺序为奥拉齐细颈线虫,捻转血矛线虫和蛇形毛圆线虫。羔羊最早感染消化道线虫的年龄为5月龄。羔羊消化道线虫的排卵的季节动态的研究结果显示:捻转血矛线虫和蛇形毛圆线虫全年呈现1个高峰期,高峰期为9月;奥拉齐细颈线虫则有2个高峰期,首个高峰期在5月,第2个高峰期在10月。由此推断,捻转血矛线虫和蛇形毛圆线虫的感染时间为6到10月,奥拉齐细颈线虫的感染时间为4到10月。
[Abstract]:In recent years, mutton sheep farming in Inner Mongolia has changed from scattered farming to scale and intensive. But during this process, the prevalence of digestive tract nematode disease in sheep was not clear under the condition of house feeding. In view of this situation, based on the investigation and study of the epidemic law of nematode disease in the digestive tract of sheep in Linhe district of Bayan Nur city, The ovulation of whole house feeding lambs infected with digestive tract nematodes for the first time in this area was observed dynamically. The results showed that the egg excretion of nematodes in digestive tract was not observed in summer lambs born in June, and that in autumn lambs born in September was observed for the first time in April of the following year. The average monthly age of the lamb was 7 months, and the winter lamb born in December was observed for the first time in June of the following year. The earliest ovulation lamb was 6 months old and the spring lamb born in March was the first to detect three kinds of digestive tract nematode eggs (Haemonchus.contortus, Trichostrongylus.colubriformis and Nematodirus.oiratianus) in September of the following year. The average age of lamb was 6 months. For the first time in 1 year, the order of eggs of nematodes in the digestive tract of lambs was Auracia australis, Haematoxylus twirlissima and nematode serpentine. The earliest infection age of lambs was 5 months old. The results of seasonal study on ovulation dynamics of nematode in digestive tract of lamb showed that there was a peak period in the whole year, the peak period was September, and the first peak was in May. The second peak was in October. It is inferred that the infection time of the nematode and the nematode is from June to October, and the infection time is from April to October.
【作者单位】：内蒙古农业大学兽医学院;巴彦淖尔市磴口县农牧业局;
【基金】：国家自然科学基金项目(31260602)
【分类号】：S858.26

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