the experimental ascertainment of the pure feed protein flowing into the duodenum on the basis of the calculation of the difference between the nh3-free crude protein flowing into the duodenum and the bacterial crude protein determined by means of dapa showed the following results after the testing of 28 different rations at a dry matter intake adequate to the production level : with a variation of the pure protein in the crude protein content of the ration between 40 and 90 % , the quota of feed protein flowing into the duodenum is 52.5 % , and with a variation of the pure protein in the crude protein content between 80 and 90 % it is 40.6 % .
C0004627
bacterial
C0033684
protein