[Variation of the ruminal and blood parameters in steers, at the inclusion in the diet of protected protein and energetic sources with formaldehyde] | Variacion de parametros ruminales y sanguineos en novillos, al incluir en la dieta fuentes proteicas y energeticas protegidas con formaldehido

amidon barley blood composition bovin bran cattle cebada composition du sang degradation diet dieta energia energie energy formaldehyde ganado bovino helianthus annuus in vivo experimentation mais maize orge proteine proteins rumen salvado soja son soybeans starch suplementos supplements