河南省兔球虫感染情况及种类调查研究

为了掌握河南省兔球虫感染情况，用麦克马斯特虫卵计数法和饱和氯化钠溶液漂浮法对来自河南省不同地区的11个兔场共465份新鲜粪便进行兔球虫感染情况调查和球虫种类形态鉴定。结果发现：兔球虫平均感染率为74.6%，多数为混合感染，感染球虫种类多在4~6种，以1—3月龄幼兔感染率最高，达83.0%，并且感染强度OPG值最高，平均为6.8×104。本次共检出11种艾美耳球虫，其中大型艾美耳球虫、无残艾美耳球虫、穿孔艾美耳球虫、肠艾美耳球虫为优势种。本实验结果为进一步有效控制兔球虫病和筛选兔球虫疫苗提供重要的参考依据。

Epidemiological Investigation and Eimeria Species Identification of Rabbit Coccidiosis in Henan Province

To grasp the current infection status of rabbit coccidiosis in Henan Province, 465 fecal samples were collected from 11 rabbit farms and examined with McMaster counting and saturated saline flotation methods to determine the prevalence and Eimeria species in rabbits. The results showed that the mean infection rate in rabbits was 74.6%, and mostly concurrent infection with four to six Eimeria species. The mean infection rate (83.0%) and OPG value (oocysts per gram feces, 6.8×104) in the rabbits younger than 3 months (1 to 3 months) were higher than other elder rabbits. 11 Eimeria species were detected in infected rabbits of Henan, and E. magna , E. irrestidua, E. perforans, and E. intestinalis were dominant species. These findings would provided a important reference for further effective control of rabbit coccidiosis and selecting some Eimeria species for development of precocious line vaccine.