Faculty of Veterinary Medicine, Urmia University Veterinary Research Forum 2008-8140 14 10 2023 10 01 Impact of dietary curcumin administration along with feed-born silver nanoparticle on growth, hemato-biochemical parameters, and digestive enzyme activity of common carp (Cyprinus carpio) 567 573 706639 10.30466/vrf.2023.1982714.3708 EN Zohre Khorshidi Department of Fisheries, Faculty of Natural Resources, Urmia University, Urmia, Iran Kourosh Sarvi Moghanlou Department of Fisheries, Faculty of Natural Resources, Urmia University, Urmia, Iran Ahmad Imani Department of Fisheries, Faculty of Natural Resources, Urmia University, Urmia, Iran 0000-0002-0975-9406 Shahryar Behrouzi Department of Comparative Histology, Ecology Institute of Caspian Sea, Sari, Iran Journal Article 2022 12 14 This research explored the impacts of feed-born silver nanoparticles (AgNPs) on common carp (<em>Cyprinus carpio</em>) and whether dietary curcumin supplementation could ameliorate the impacts of AgNPs on growth, hemato-biochemical parameters and digestive enzyme activity. Nine experimental diets were prepared containing 0.00, 0.05, and 0.15 g kg^-1 AgNPs, as well as 0.00, 0.75, and 1.50 g kg^-1 curcumin in a factorial design. Triplicate groups of common carp (4.82 ± 0.41 g) were fed on the test diets for 60 days. The results demonstrated that AgNPs reduced growth performance and enhanced the feed conversion ratio dose-dependently. Supplementing 0.75 g kg^-1 curcumin at a low AgNP level improved the growth rate, while its inclusion at a high AgNP level led to further suppression of growth performance. The highest hematocrit value, hemoglobin concentration and white blood cell count were recorded in the group receiving 0.75 g kg^-1 curcumin. Serum glucose, cholesterol and triglyceride concentrations were elevated by increasing AgNP levels. However, curcumin inclusion, particularly at the lower level of AgNPs significantly decreased their values. Similarly, intestinal alkaline protease and lipase activities were progressively reduced by increasing dietary AgNP contents, but, significant improvements were observed by curcumin application at the lower AgNP level. Our results revealed that curcumin supplementation could limit the toxic effects of lower dietary AgNP contents. https://vrf.iranjournals.ir/article_706639_28470824e02c26cd21abbc068b71326d.pdf