Incidence of coccidia in birds [chickens] under prophylactis with a coccidiostat for 3 years in the poultry units of Matanzas province [Cuba]

agentes nocivos agronomic characters america animal animal domestique animales animals anticoccidials anticoccidien antimicrobials antimicrobien antiprotozoaire antiprotozoal agents aves de corral aves domesticas bactericidas biological control biological development birds breeding breeding aims caribbean caribe chickens coccidiose coccidiosis coccidiostaticos crecimiento croissance disease resistance domestic animals domesticated birds drugs enfermedades parasitarias facteur nuisible fisiologia fonction physiologique galliformes growth injurious factors lutte biologique medicamentos medicamentos contra protozoarios objetivo de mejoramiento oiseau oiseau domestique parasitose parasitoses periodicidad periodicity pest control methods physiological functions physiologie physiology pollo poulet poultry protozoal infections protozoose resistance to injurious factors resistencia a la enfermedad saison seasons temps tiempo time timing vertebrados vertebrates vertebre volaille