Document Type : Primary Research paper
Ph.D. student, Astrakhan State University, Russia; Ministry of Agriculture, Department of Agricultural Research, Baghdad, Iraq
Ph.D in Agriculture, Professor, Chair of Biotechnology, Zoology, & Aquaculture, Astrakhan State University, 20a Tatischev Street, Astrakhan, 414056, Russia
Ph.D. in Biology, Associate Professor, Chair of Aquaculture and Fish Diseases, Saint Petersburg State University of Veterinary Medicine; 107139, Russia, 196084, st. Chernigovskaya, 5 Saint-Petersburg
The introduction of the technique of alternating culture between Fish and agricultural crops does not require additional costs; such as the purchase of mineral fertilizers and industrial feeds. This technique uses organic fertilizers from the remains of plant shoots and residues of crop plants and melons, in addition to the natural feed base for earthen ponds or through the addition of feed from barley and wheat grains, which allowed increasing the productivity of fish several times. This experiment that used the technique of organic fertilizers from the remains of plant shoots and the remains of crop plants and melons, in addition to the natural feed base of earthen ponds or through the addition of additional feed from barley and wheat grains, which allowed to increase the productivity of fish several times. The results represented by an increase in biomass, where we observed an increase in biomass in ponds by 13.2% -11.8%, as well as an increase in survival rate by 5.4% -6%.