Verification of Ruminogen (SPOFA) efficiency and its comparison with Rumensin (Elanco) in bullocks with permanent rumen cannula and in bull fattening

absorption de substances nutritives ammonia ammoniac application methods application rates boeuf buey bullocks chromatographie chromatography consommation alimentaire (animaux) consumo de piensos cromatografia digestive juices dose d'application essai feed consumption feed conversion efficiency gain de poids ganancia de peso growth rate in vivo experimentation jugos digestivos muestreo nutrient uptake ph pruebas sampling suc digestif taux de croissance trials volatile fatty acids weight gain