Uso de niveles de nitrógeno uréico en sangre (BUN) y leche (MUN) como guía para la suplementación protéica y energética en bovinos

摘要: As an adjunct to monitoring body weight changes and condition score, blood or milk urea nitrogen (BUN MUN) can be a useful tool for the protein­energy status of cattle. In healthy beef cows finishing steers, concentrations less than about 7 mg/dL would indicate deficiency dietary protein (nitrogen) relative intake digestible energy. rapidly growing cattle high producing dairy cows, 15 protein. Urea greater 19 20 have been associated with reduced conception pregnancy rates in cows.