| The effect of anticoccidial drugs for coccidial vaccines |
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Hee-jeong Youn1, Jae-wuk Noh2 |
1College of Veterinary Medicine, Seoul National University
2Shincheongbong Farm |
| 항콕시듐제제가 콕시듐 백신에 미치는 영향 |
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윤희정1, 노재욱2 |
1서울대학교 수의과대학
2신청봉농장 |
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| Abstract |
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Avian coccidiosis is a very important disease of poultry industry. In recent years, many researchers studied for the immunology of avian coccidiosis. Coccidial vaccines have been used at some poultry farms in many countries. In order to evaluate the anticoccidial effects of coccidial vaccine to chicken treated with anticoccidial drugs, 4 week-old chicken were administered anticoccidial drugs and challenged with avian coccidia at 2 weeks after vaccination of coccidia. The body weight gains, lesion scores, oocyst indices and anticoccidial indices of chicken were investigated at the time of vaccination, challenge and necropsy. The body weight gains and feed conversion rates of groups immunized with coccidial vaccine and treated with anticoccidial drugs were moderately higher and lower than those of groups treated with anticoccidial drugs, respectively. The lesion score and oocyst indices of all groups immunized with coccidial vaccine and/or treated with anticoccidial drugs were milder than those of infected control groups. The anticoccidial indices of groups immunized with coccidial vaccine and treated with anticoccidial drugs were moderately higher and lower than those of groups. treated with anticoccidial drugs. But all of the investigated items were not statistically significant. |
| Key Words:
chicken, coccidia, vaccine, anticoccidial drug, immunization |
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