Freeze Dried Earthworm meal derived from the species Eisenia foetida was nutritionally evaluated as a replacement for herring meal in production diets from rainbow trout, Freeze Dried Earthworm. Increasing levels of dried, from 5 to 30% by weight, were included in the diet and the response of fish fed these diets was compared to fish fed a control diet without earthworm meal inclusion. There was no evidence of any adverse effect on the growth performance or feed utilization efficiency of fish fed diets containing these low levels of dried Earthworm. There was. however, a significant increase in the whole carcass lipid content of fish fed diets containing 5. 10 and 20% dried. Concent rations of iron, zinc, lead, copper and cadmium within the whole fish carcass were not significantly elevated as a result of including these low levels of the dried Earthworm meal in diets for rainbow trout.

Experts believe most native species were wiped out wherever glaciers covered the land. Most earthworms we see today were imported mainly from Europe by early settlers. The worms or worm cocoons traveled in the rootstocks of plants brought by the settlers from their homelands. Europeans added soil, with its earthworms or worm cocoons, to ships for ballast. Once anchored in North American harbors, ships released their ballast -and living worms, who found new homes.

The processing of Freeze dried earthworm is clean and soak the earthworm, and then put into the low-temperature (-30℃) vacuum freeze drying box, after 39 hours to obtain the swelled dry earthworm. Moisture of freeze dried earthworm is within 5% which not only the pretty good pet feed but also can be useing in the file of medicine, health products, cosmetics and etc.