摘要
采用粪便寄生虫虫卵检测和虫体鉴定方法调查四川凉山半细毛羊原种场及周围的羊寄生虫,主要有血矛线虫、奥斯特线虫、仰口线虫、夏伯特线虫、食道口线虫、毛首线虫、肺线虫、细颈线虫、片形吸虫、前后盘吸虫。根据凉山州半细毛羊原种场的主要寄生虫发育史、流行病学和中间宿主及该地的气候等制订寄生虫病的定期监测程序,即每年的2、5、8、11月各进行一次监测;根据该场主要寄生虫病疫情、绵羊的抵抗能力等制订进行预防性驱虫的参考标准,即15%羊的片形吸虫虫卵EPG值大于300时或20%羊的线虫虫卵EPG值大于1 000时进行驱虫;再根据“虫净灵”效果,制订驱虫效果考核参考指标,即口服药物后4 d线虫虫卵转阴率95%以上、20 d吸虫虫卵转阴率100%。从而建立起“定期监测、按需驱虫、及时评估”的控制技术,实施2年来的结果表明,该场绵羊的主要寄生虫病即片形吸虫病和线虫病的感染率分别下降了80.51%和27.80%。
Through the investigation of egg count and parasite identification, there were haemonchus, ostertagia, aucylostoma ,chabertia ,oesophagstomum ,trichuris ,lungworn,nematodirus ,fasciolidae and paramphistomum existed in the sheep and goat at Butuo area. First,according to the life cycle,epidemiology of major parasites,biologic characteristic of middle host and autochthonic weather,the periodical monitorial procedure was established,including the parasites were inspected in February, May, August and November every year,respectively. Second ,according to pathogenic capability of the major parasites and resistant capability of host ,the deworming reference standard of parasites was worked out when the faseiolidae egg＇s EPG of 15%- .sheep was 2〉300,or when the nematode egg＇s EPG of 20%-sheep was 2〉1 000. The evaluation standard of deworming effect was constituted,which was the turn-negative rate of nematode＇s egg being ≥95% and the fasciolidae＇s egg being 100%. A new control technique for control of parasitosis in the sheep farms was made,including ＂periodical monitor,deworming according to parasitosis level ,evaluating the deworming effect＂. Since the new control technique was carried out two years ago,the infection rate of the trematode and wireworm diseases in sheep depressed by 80.51 % and 27. 80% ,respectively.
出处
《中国兽医学报》
CAS
CSCD
北大核心
2006年第4期439-441,共3页
Chinese Journal of Veterinary Science
基金
四川省学术与技术带头人培养基金
关键词
寄生虫病
控制技术
绵羊
parasitosis
control technique
sheep
