6Shiau SY, Yu Y P, Dietany supplementation of chitin and chitosan depress growth in trilapha,Oreochromis niloticus O.auteus[J].Aquaculture, 1999(179) :439 -446
7Lindsay G H, Walton M J, Adron J W, et al. The growth of rainbow trout (Salmo gairdneri) givendiets containing chitin and it relation ship to chitindytic enzymes and chitin digestibility [J]. Aquaculture, 1984(37):315-334
