Interaction between live vaccines for coccidiosis and phytogenic compounds in the diet of broilers.

This study aimed to determine whether live vaccines alone or associated with phytogenic compounds supplied via feed could improve performance, intestinal health, serum biochemistry, and coccidiostatic action in broilers up to 42 days of age, challenged with Eimeria spp., compared with a traditional anticoccidial program. We used 800 birds divided into five treatments of eight repetitions each (n = 20): NC - Negative control (absence of additives in the feed and without coccidian challenge); PC - Positive control (absence of additives and with coccidian challenge at 21 days); AAP - Anticoccidial additives program, including salinomycin and nicarbazine, with coccidian challenge at 21 days of life; VAC - Vaccination on day 1 of life (Hipracox HIPRA®) against coccidiosis and subsequent coccidian challenge at 21 days; VAC + BPC - Vaccination (day 1 of life), the addition of 200 ppm of blend phytogenic compound (BPC) based on carvacrol and cinnamaldehyde to the diet, with coccidian challenge at 21 days of life.