[Reproductive performance and milk production of Holstein-Friesian cows in Morocco].
D000818:Animals; D002417:Cattle / Q000502:physiology*; D005260:Female; D007774:Lactation / Q000502:physiology*; D009018:Morocco; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology*
Performances de reproduction et de production laitière des vaches Pie-Noires au Maroc.