[Selenium and vitamin E deficiency syndrome in Iberic pasturing swine [Bibliographic review]]

additif additif alimentaire additives aditivos aditivos alimentarios agentes nocivos agronomic characters animal animal domestique animal pour cuirs et peaux animales animales de carne animals antioxidantes antioxidants antioxydant artiodactyla artiodactyle cerdo composition deficiencia de minerales deficiencia de oligoelementos deficiencia de vitaminas deficiency diseases disorders domestic animals elements europa europa occidental europe europe occidentale facteur nuisible food additives functional disorders ganado injurious factors livestock maladie de carence mammals meat animals metabolic disorders mineral deficiencies nutritional disorders organic compounds porcin semimetales semimetals swine tocoferoles tocopherol tocopherols trace element deficiencies trastornos trastornos funcionales trastornos nutricionales trouble trouble fonctionnel trouble nutritionnel vertebrados vertebrates vertebre vitamin deficiencies vitaminas vitamine vitamins western europe