D-cystine utilization by the chick.
Young chicks were fed graded levels of either L-cystine or DL-cystine in a purified crystalline amino acid diet made adequate in methionine but void in cystine. Gain performance and slope-ratio efficacy comparisons indicated that the D-isomer of cystine could not be utilized by the chick.
D000818:Animals; D001835:Body Weight; D002645:Chickens / Q000254:growth & development / Q000378:metabolism*; D003553:Cystine / Q000378:metabolism*
D003553:Cystine