[Zootechnical and genetic basis for the use of prolific Chinese breeds in intensive husbandry: the case of Meishan swine breed]

aptitud combinatoria augmentation de rendement aumento del rendimiento breeding value cerdo combining ability crecimiento croisement croissance cruzamiento gain de poids ganancia de peso genetic variation gestation multiple growth hybrid vigour multiple births performance de reproduction porcin reproductividad reproductivity selection swine tendencias trends vigueur hybride weight gain