Laboratory of animal nutrition;
Graduate School of Animal Science and Technology;
Yangzhou University;
Wen Hui Road;
Jiangsu 225009;
China;
Laboratory of Functional Morphology;
Graduate School of Agricultural Science;
Tohoku University;
1-1 Tsutsumidori-Amamiyamachi;
Aobaku;
Sendai 981-8555;
Japan;