Effect of selected factors on the functional component content of milk fat in dairy cows

acide gras aliment pour animaux alimentation des animaux animal animal feeding animal laitier animales animales lecheros animals antioxidantes antioxidants antioxydant aptitud lechera carotenoide carotenoides carotenoids cow milk cows dairy cows fatty acids feeds forage forrajes fourrage grasa de la leche lactation lactation number lait lait de vache leche leche de vaca lipid content methode methods milk milk fat milk performance milk yield milk yielding animals piensos poland pologne polonia rendement laitier rendimiento lechero retinol teneur en lipides vaca vacas lecheras vache vitamin e vitamina e vitaminas vitamine vitamine e vitamins