Korean Journal of Veterinary Research 1994;34(2):335-338.
Oocysticidal effects of morestan combination preparations against oocysts of Eimeria tenella
Jae-wuk Noh1, Byeung-gie Kim1, Hwa-gwun Oh2
1Bayer Veterinary Medical Research Institute, Bayer Vetchem (Korea) Ltd.
2College of Veterinary Medicine, Seoul National University
Morestan 합제의 Eimeria tenella 오오시스트에 대한 살멸효과
노재욱1, 김병기1, 오화균2
1한국바이엘화학(주) 동물의약연구소
2서울대학교 수의과대학
The tests on the oocysticidal effects of three formulations (75% o-dichlorobenzene, 7.5% cresol combined with morestan 0.5%, 1.0%, 1.5%, respectively) against immature oocysts of Eimeria tenella, were carried out. A o-dichlorobenzene preparation (72.5% o-dichlorobenzene, 7.5% cresol) on the market was selected and tested as the control. The tests were divided into two ways, the one was evaluated at different dilutions and contact times. The other was performed at different storage days. The test results are summarized as follows. Oocysticidal effects of 100% were revealed at 1 to 3 hours contact time of all morestan combined preparations. On the other hand, the perfect oocysticidal effect was revealed only at 24 hours exposure time of 100 times dilution among dilutes of control preparation. Combined rate of morestan was higher, oocysticidal effect was better. In the latter test, all morestan combined formulations had 100% of oocysticidal effect up to 5 days storage after dilution and 86.4% to 96.7% at two weeks storage after dilution, whereas the oocysticidal effects of the control preparation was gradually decreased by the storage time was passed and there was no effect at 2 weeks storage after dilution. With these results, morestan combined preparations have synergistic effect against oocysts of E tenella and can be used as the most effective oocysticidal disinfectant for broiler industry in future.
Key Words: morestan, o-dichlorobenzene, disinfectant, Eimeria tenella

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