PANSENGESCHUTZTE AMINOSAUREN IN DER MILCHKUHFUTTERUNG UNTER BESONDERER BERUCKSICHTIGUNG VON METHIONIN UND LYSIN

摘要

The duodenal flow of essential amino acids (EAA) primarily depends on the efficiency of rumen microbial protein synthesis. Once the capacity of the energy-dependent microbial synthesis is exhausted, additional amounts of EAA flowing into the small intestine can only be supplied by specifically treated, rumen-protected (RP) protein feeds or RPAA. Type and intensity of the treatment of, e.g., rapeseed and soybean meal can have a significant impact on the AA flow into and the absorption from the small intestine. Therefore, an evaluation of rumen-protection technologies should include estimates of both, rumen degradation and intestinal absorbability.