Comparison of ileal digested production of parental rice and rice genetically modified with cowpeas trypsin inhibitor.
OBJECTIVE
To compare the ileal digestibility of protein and amino acids in parental rice and rice genetically modified with sck gene.


METHODS
Six experimental swines were surgically fixed with a simple T-cannula at the terminal ileum and fed with parental rice and rice genetically modified with sck gene alternately. The ileum digesta were collected and analyzed for determination of apparent and true digestibility of protein and amino acids.


RESULTS
The apparent and true digestibility of protein was similar in these two types of rice. Except for the apparent digestibility of lysine, there was no difference in the apparent and true digestibility of the other 17 amino acids.


CONCLUSIONS
The digestibility of protein and amino acids is not changed by the insertion of foreign gene, so it can meet the request of "substantial equivalence" in digestibility of protein and amino acids.
Han
Jun-Hua
JH
Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, 27 Nanwei Road, Beijing 100050, China.
Yang
Yue-Xin
YX
Men
Jian-Hua
JH
Bian
Li-Hua
LH
Guo
Jun
J