Efficacy of Semduramicin and Salinomycin Against Eimeria maxima in a Laboratory Test Using Two Levels of Oocyst Inocuia
| Autor: | V. Guyonnet, G. F. Mathis, S. Michener, D. P. Conway, L. R. Mcdougald |
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| Rok vydání: | 1995 |
| Předmět: |
Male
Biology Weight Gain Feed conversion ratio SEMDURAMICIN Eating chemistry.chemical_compound Animal science medicine Animals Poultry Diseases Salinomycin Pyrans Coccidiosis Inoculation Broiler General Medicine biology.organism_classification Carotenoids Anti-Bacterial Agents Laboratory test Eimeria maxima chemistry Nigericin Coccidiostats Eimeria Animal Science and Zoology medicine.symptom Chickens Weight gain |
| Zdroj: | Poultry Science. 74:1942-1947 |
| ISSN: | 0032-5791 |
| Popis: | The anticoccidial efficacies of semduramicin and salinomycin against five field isolates of Eimeria maxima in broiler chickens were compared in five trials. Uninfected, unmedicated; infected, unmedicated; infected, 25 ppm semduramicin; and infected, 66 ppm salinomycin treatments were assigned to battery cages using a randomized, complete block design. Two levels of inocuia, 103 and 104 oocysts per bird, were used in each trial in the infected treatments, creating a total of seven treatments per trial. Each treatment consisted of five replicate cages of eight broiler cockerels each. Medications were given in the feed continuously for 7 d beginning 24 h before inoculation. Response variables measured included bird weight gain by pen, feed consumption, feed conversion, plasma carotenoid concentrations, and coccidial lesion score. By using two levels of inocuia it was demonstrated that the efficacy of each anticoccidial was equal to or greater than 90% in controlling these E. maxima isolates. It was also demonstrated that 25 ppm semduramicin was more efficacious than 66 ppm salinomycin based on improvements in weight gain, feed conversion, plasma carotenoid concentrations, and coccidial lesion control. |
| Databáze: | OpenAIRE |
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