Histological effects of feeding with different sources of zinc and iron (nano-particles and mineral form) in common carp(Cyprinus carpio)

With the development of nanotechnology and materials science, however, these materials also have been used increasingly with the potential toxic effects of many unknown substances and many nano-particles were built with new properties and new despite. Therefore, in this study the effects of feeding with different sources of iron and zinc in the tissue of common carp (Cyprinus carpio) were measured.

For this purpose, 420 common carp (with an average initial weight 45±4.7 g) was prepared, the fish sterilization and adapted to the laboratory conditions for 10 days. Then fish were randomly divided into seven groups, the first group was considered as control groups respectively and other fish received values ​​of 10, 50 and 100 micrograms of iron and zinc nano-particles per gram of food for 60 days.

Microscopic studies of organs (liver, kidney) study showed that increasing the concentration of nano-materials could have more evenly histopathological lesions in the liver tissue and cells. In the medium and low concentrations of both nano-particle and in high doses of iron nano-particles, by removing the inducer tissues could again resume their physiological activity, but in high doses, unlike the iron nano-particles, the repair tissue was not resumable.

 From the above results it can be concluded that increasing the concentration of the nano-particles could increase tissue damage and can be considerable factors.