[Is there a relation between the nervous diseases and nutrition in ruminants or is it just another story about BSE?]

abonos npk aetiology alemania allemagne animal nutrition austria autriche beef belgique belgium bovine spongiform encephalopathy bulgaria bulgarie canada carne de res carnitina carnitine consommation alimentaire consumo de alimentos czech republic dairy cows danemark denmark dinamarca disease surveillance effectif du cheptel encefalopatia espongiforme bovina engrais npk espagne etiologia etiologie eua feed crops finland finlande finlandia food consumption france francia germany grazing grecia greece hipomagnesemia histoire historia history hongrie hungary hungria hypomagnesaemia ireland irlanda irlande italia italie italy livestock numbers morbidite morbidity morbosidad netherlands npk fertilizers nutrition animale ovin ovinos pastizal permanente pastoreo permanent pastures plantas forrajeras plante racine poland pologne polonia portugal prairie permanente prion priones prions reino unido romania root crops roumanie rumania sheep slovak republic spain suisse suiza switzerland symptome symptoms united kingdom usa vacas lecheras viande bovine vigilancia de enfermedades