With growth promoting agents with poison and side effect seceding from pig feed additive, porphyrin Fe will play an important role in animal husbandry.

Objective to investigate the potential effects of promoting growth additive on part of reproductive function of female rats and toxic action.

After primarily purified and renatured, the expressed recombinant salmon GH was used as a supplement to feed Tilapia fingering. The test shows that recombinant salmon GH ha...