We compared two attenuated anticoccidial vaccines, administered to broilers by spray into the incubator (88,000 males and 210,100 females). Vaccine A container five species of Eimeria and vaccine B three. Zootechnical performance was similar in the two groups, with mean lesion scores no higher than 1; vaccine A caused only duodenal lesions, while vaccine B also caused typhlitis. Maximum oocyst count was 23,000/g feces at age 28 days with vaccine A and 38,000 at 21 days with vaccine B. Broilers vaccinated with vaccine B had more frequent enteric symptoms, and C. perfringens isolation.
CITATION STYLE
Ceruti, R., Ferrazzi, V., Gavazzi, L., Gallazzi, D., & Grilli, G. (2005). Efficacy in the field of two anticoccidial vaccines for broilers. In Italian Journal of Animal Science (Vol. 4, pp. 259–262). Avenue Media. https://doi.org/10.4081/ijas.2005.259
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