The effect of seasons on reproductive traits of boars in insemination

animal animal domestique animal pour cuirs et peaux animales animales de carne animals artiodactyla artiodactyle boars calidad cerdo condiciones ambientales condition de milieu domestic animals environment environmental conditions environmental temperature environnement espermatozoo fisiologia fonction physiologique fotoperiodismo gametes gametos ganado livestock mammals meat animals medio ambiente periodicidad periodicity photoperiodicity physiological functions physiologie physiology porcin quality reproduction saison seasons spermatogenese spermatogenesis spermatozoa swine temperatura temperature temps tiempo time timing verraco verrat vertebrados vertebrates vertebre