SELECTION AND CHARACTERIZATION OF A PRECOCIOUS LINE OF EIMERIA-INTESTINALIS, AN INTESTINAL RABBIT COCCIDIUM

被引:38
作者
LICOIS, D
COUDERT, P
BOIVIN, M
DROUETVIARD, F
PROVOT, F
机构
[1] Laboratoire de Pathologie du Lapin, Centre de Recherches de Tours-Nouzilly, I.N.R.A., Monnaie
关键词
D O I
10.1007/BF00930814
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
A precocious line of Eimeria intestinalis was obtained by selection for early development of oocysts in rabbits and after six consecutive passages in animals. This line (EiP) was derived from a wild strain (EiO) isolated in 1975 from the caecal content of a rabbit with coccidiosis. The prepatent period of the EiP strain was reduced from 215 h to<144 h, the result being that the oocyst sporulation time was the same for both lines. The excreted and unsporulated oocysts had exactly the same shape, but microscopical examination of the sporulated oocysts showed a marked difference between EiP and EiO strains. A huge refractile globule was located in each of two sporocysts of the precocious line, whereas no refractile globule was seen in the other two. The EiP line had a reproductive potential much lower (1000 times) than that of its parent strain EiO and, as judged by the weight gain, mortality and lesions that also occurred in the jejunum and above all in the ileum, its pathogenicity was substantially reduced. © 1990 Springer-Verlag.
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页码:192 / 198
页数:7
相关论文
共 37 条
[1]  
Bedrnik P., 1986, Research in avian coccidiosis. Proceedings of the Georgia Coccidiosis Conference, 18-20 November 1985, P510
[2]  
CATCHPOLE J, 1979, PARASITOLOGY, V79, P249, DOI 10.1017/S0031182000053324
[3]  
Cheissin E. M., 1948, UCH ZAP KARELOFINSK, V3, P179
[4]   CHARACTERIZATION OF EIMERIA SPECIES .1. ISOLATION AND STUDY OF PATHOGENICITY OF A PURE STRAIN OF EIMERIA-PERFORANS (LEUCKART, 1879 - SLUITER AND SWELLENGREBEL, 1912) [J].
COUDERT, P ;
LICOIS, D ;
STREUN, A .
ZEITSCHRIFT FUR PARASITENKUNDE-PARASITOLOGY RESEARCH, 1979, 59 (03) :227-234
[5]  
COUDERT P, 1976, CR ACAD SCI D NAT, V282, P2219
[6]  
Coudert P, 1973, Annale Rech vet, V4, P371
[7]  
COUDERT P, 1979, 1979 P INT S COCC FU
[8]  
FIORAMONTI J, 1981, ANN RECH VET, V12, P413
[9]  
Jeffers T. K., 1986, Research in avian coccidiosis. Proceedings of the Georgia Coccidiosis Conference, 18-20 November 1985, P482
[10]   ATTENUATION OF EIMERIA-TENELLA THROUGH SELECTION FOR PRECOCIOUSNESS [J].
JEFFERS, TK .
JOURNAL OF PARASITOLOGY, 1975, 61 (06) :1083-1090