The Impact of Spent Mushroom Compost and Fertilizer on Changes of Intestinal Tissue of Cultured Warm Water Species

Inroduction & Objective: Breeding carp species included common carp, grass carp or amor, silver carp or phytophagus and bighead.This study has been doneonimpact of button mushroom compost as an alternative and fertilizer on tissues structure of four cultured warm water species. Material and For this purpose juveniles a month with an average weight of 69.60 ± 1.28g for two months in six pool werefed with button mushroom compost and fertilizers in warm water fish culture at Shahid Ahmadian Khorramshahr. During breeding,treatment groups and control were fed by button mushroom compost and chemical fertilizer. At the end of the stipulated time and biometrics,5 millimeter tissue samples removed from primary, middle and end part of the intestine.Then rutine procedure of tissue preparation was done and sections staining with (H & E), studied by light microscope equipped with Dinolite lens. The results indicated an increase in the number of mucus cells in common carp and silver carp in the treatment group, an increase in the thickness of epithelium in the bighead in the control group, an increase in muscle layer thickness in grass carp and silver carp in the control group and an increase in the length of villi in bighead and silver carp in the treatment group with compost(p≤ 0.05). Therefore, it can be reported that in the recent study, the use of compost, has a positive effect on various parts of the intestinal in most cultured warm water species, because the compounds in it make the food easy to get in the species has been studied.For this purpose, compost can be used as a suitable alternative for enrichment in cultured warm water species.