[Investigations on the influence of different protein and energy content in feed on protein, urea, fat, glucose and electrolytic concentration as well as enzymatic activities (cholinesterase, alkaline phosphatase and creatin-kinase) in blood serum of growing broiler and hybrid layer chickens]

aliment pour animaux alimentos para animales alkaline phosphatase azucares chicks cholinesterase colinesterasa corps gras electrolytes enzimas enzyme enzymes fats feeds fosfatasa alcalina grasas phosphatase alcaline pollito poussin proteine proteins sucres sugars urea uree