27. True digestibility of the amino acids of barley by experiments with Japanese quails (Cotornix Cotornix Japonica)

Balance experiments for establishing of the digestibility of the amino acids of barley with Japanese quails have been conducted. Two methods were used – fecal and indicator. The average true digestibility of the amino acids, using  the fecal methods, were 76.37 and for essential amino acids – 77.98. The highest true digestibility shows proline – 85.2 and the lowest – lysine – 70.46. The average true digestibility of the amino acids, using the indicator methods, were 75.7 and for essential amino acids – 78.3. The highest true digestibility shows leucine – 84.87 and the lowest – metionine – 61.37. Significant were the differences between the both of the methods by arginine and metionine.