Analysis of the behavior of Marek's disease in Matanzas province [Cuba, in chickens] in the last few years

agentes nocivos america anatomia anatomia animal anatomie anatomie animale anatomy animal animal anatomy animal domestique animales animals appareil digestif aves de corral aves domesticas bazo biological development birds body parts cardiovascular system caribbean caribe chickens crecimiento croissance digestive system disease prevention diseases domestic animals domesticated birds endocrine glands enfermedad de marek estomac facteur nuisible female genital system fisiologia fleur flores flowers foie fonction physiologique galliformes gineceo glande endocrine growth gynoecium immunisation immunization inflorescence inflorescences inflorescencias injurious factors kidneys liver maladie de marek oiseau oiseau domestique ovaire ovaries ovarios partes del cuerpo partie du corps physiological functions physiologie physiology plant anatomy pollo poulet poultry proventricule proventriculo proventriculus rate rein sistema cardiovascular sistema digestivo sistema urogenital spleen stomach tracto urinario tractus urinaire urinary tract urogenital system vertebrados vertebrates vertebre virose viroses virosis volaille