Monitoring of the effect of innovative feed additives on hydrochemical parameters and microbial contamination of the aquatic environment during the cultivation of common carp (Cyprinus carpio)

Monitoring of the effect of innovative feed additives on hydrochemical parameters and microbial contamination of the aquatic environment during the cultivation of common carp (Cyprinus carpio)The article presents the results of the influence of innovative feed additives on hydrochemical parameters and the level of microbial contamination of the aquatic environment during the cultivation of common carp (Cyprinus carpio).Assessment of water quality when using feeds with innovative additives is a key element in monitoring environmental safety and ensuring the health of aquatic organisms.It was found that the pH value changed, in particular during the experiment with the introduction of innovative additives into the feed, and amounted to 7.2 in the control group.In the first experimental group, which was fed inulin, the index was slightly different, but this change was not significant -7.3, and in the second experimental group, which was fed probiotics, it remained at the level of the control group -7.2.Changes in the oxygen regime of water after feeding fish with feed containing innovative additives indicate that oxygen in the water is at an optimal level.The index of chemical oxygen consumption slightly changed in the process of feeding fish with the use of innovative additives and amounted to 10 mg/l in the control group, 9 mg/l in the first and second experimental groups, which were fed with inulin and probiotics, but did not deviate from the norm of water for carp rearing in ponds.It was found that the water hardness when feeding feed containing innovative additives is at the optimal level.The level of microbial contamination of water, in particular the number of coliform bacteria, which belong to sanitary indicator microorganisms, after feeding feed with additives, showed that in the reservoirs where fish received standard feed without additives, their level was 5 CFU/100 ml.This is the highest figure among the groups studied and indicates more intense microbial contamination.The addition of inulin and probiotics changed the level of coliform bacteria to 4 CFU/100 ml, which is 20% lower than in the water where the control group of fish were kept.These results confirm that the addition of inulin and probiotics to feed can improve the sanitary condition of water bodies, which is an important factor in maintaining fish health and ecological balance.