Survey On The Epidemiology Of Chicken Coccidiosis And Its Integrate Control In Part Areas Of Jilin City

In this research, 18 chicken farms from 4 regions and 23 chicken farmers were selected in Jilin province, then the survey on the species of chicken Coccidiosis from broilers fed in different ways and some layers and the infection status of chicken was made, According to the determinations the special pathological indexes such as oocyst's shape, size, the shortest time of sporing, latent period, and parasitic site, the oocysts were primarily isolated and used to infect the healthy chicken, then the result of infection were confirmed through detecting the latent period, parasitic site and pathogenicity. The results showed: the chicken coccidian widely existed in chicken farms which were mainly infected by kinds of coccidian. A total of 7 kinds Eimeria coccidian were detected, they were Eimeria.tenella, E.rnaxia, E.acerrculirca, E.necatrix, E.bruretti, E.praecox and E.mitis. Among them, the dominant pathogenic coccidian were Eimeria.tenella, E.maxia and E.acernufina.According to the determinations on POAA, RLS, ROP and ACI, the drug resistances of Eimeria.tenella Changyi strain and Fengman Strain to Robenidine, Clopidop, Diclazuril, Maduramicin, Amprolium, Salnomycin, Monensin, sulfaclozine and Halofuginone were observed. The results showed that the Changyi strain was sensitive to sulfaclozine, diclazuril and Maduramicin; it had slight drug resistance to Monensin, moderate drug resistance to Clopidolum and Halofuginone, severe drug resistance to Robenidine, Amprolium and Salnomycin. While the Fengman strain was sensitive to sulfaclozine and diclazuril; it had moderate drug resistance to Maduramicin and Clopidolum severe drug resistance to Robenidine, Monensin, Halofuginone, Amprolium, and Salnomycin. It indicated that sulfaclozine, diclazuril, Maduramicin and Clopidolum could be used to prevent Eimeria.tenella properly, while Monensin, Halofuginone, Robenidine, Amprolium and Salnomycin could not be used temporarily.According to the determinations on POAA, RLS, ROP and ACI, the effects of the singer-medicine and the mixed-medicine were compared. The results showed that when using Monensin and Salnomycin had which had slight drug resistance or Clopidolum and diclazuril which had moderate drug resistance together or alternately, the effect of drugs increased significantly. So it was suggested to use drugs together or alternately.Through the comparison on the effects of drug and vaccine, the relative gain rate, survival rate, pathological changes value, oocyst value were determined. The results showed that effects of drug and vaccine were nearly the same. But vaccine prevention was better than medicine prevention in use and economic cost.