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.
|Titolo:||Efficacy in the field of two anticoccidial vaccine for broilers|
|Autori interni:||GRILLI, GUIDO (Ultimo)|
GALLAZZI, DANIELE (Penultimo)
|Settore Scientifico Disciplinare:||Settore VET/05 - Malattie Infettive degli Animali Domestici|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||10.4081/ijas.2005.259|
|Appare nelle tipologie:||01 - Articolo su periodico|