title: Effect of heterosis and maternal influence on gestation length and birth weight in reciprocal crosses among Angus, Charolais and Hereford cattle.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001724:Birth Weight; D001947:Breeding; D002417:Cattle / Q000502:physiology*; D003433:Crosses, Genetic; D005260:Female; D006823:Hybrid Vigor; D006824:Hybridization, Genetic; D008297:Male; D011247:Pregnancy; D011270:Pregnancy, Animal; D013997:Time Factors