D- VS L-methionine utilization by growing steers

dc.citation.epage13en_US
dc.citation.spage12en_US
dc.contributor.authorCampbell, C.G.
dc.contributor.authorSt. Jean, G.
dc.contributor.authorTitgemeyer, Evan C.
dc.contributor.authoreidetitgemeen_US
dc.date.accessioned2010-09-10T19:56:13Z
dc.date.available2010-09-10T19:56:13Z
dc.date.issued2010-09-10T19:56:13Z
dc.date.published1994en_US
dc.description.abstractIncreasing the amino acid supply to the small intestine of growing cattle can increase performance, if specific amino acids are limiting. Although this can be accomplished by feeding rumen undegradable protein, a more economical approach may be supplementing only those amino acids that actually limit performance, but in a form that will bypass the rumen. Methionine (MET) is thought to be a limiting amino acid for growing cattle. DL-MET, a 50 :50 mixture of natural methionine (L-MET) and the unnatural optical isomer (D-MET) is used widely in monogastric rations. Ruminally protected DL-methionine is also available for cattle; however, little information is available about its utilization by growing steers. We studied the efficiency of utilization of D- vs L-MET by growing steers by measuring nitrogen retention of steers postruminally supplemented with graded levels of D- or LMET. Nitrogen retention increased linearly in response to infusion of both L-MET and D-MET, with similar responses for the two isomers. The efficiency of utilization of DMET relative to L-MET was estimated to be 95.5%. In conclusion, D-MET was similar to L-MET in increasing nitrogen retention of growing steers.en_US
dc.description.conferenceCattlemen's Day, 1994, Kansas State University, Manhattan, KS, March 4, 1994en_US
dc.identifier.urihttp://hdl.handle.net/2097/4894
dc.publisherKansas State University. Agricultural Experiment Station and Cooperative Extension Serviceen_US
dc.relation.isPartOfCattlemen’s Day, 1994en_US
dc.relation.isPartOfKansas Agricultural Experiment Station contribution; no. 94-373-Sen_US
dc.relation.isPartOfReport of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 704en_US
dc.subjectBeefen_US
dc.subjectMethionineen_US
dc.subjectGrowing steersen_US
dc.subjectNitrogen retentionen_US
dc.titleD- VS L-methionine utilization by growing steersen_US
dc.typeConference paperen_US

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