Interaction of two levels of Sanyar commercial prebiotics (powder and liquid) in reduction of water pollution load, feed and growth performance, digestive enzyme activity, non-specific immunity of common carp (Cyprinus carpio) in bio-floc system

Document Type : Research Paper

Authors

1 1. PhD student in Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University

2 2. Assistant Professor, Department of Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University

3 3. Associate Professor, Department of Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University

Abstract

The purpose of this study was to investigate the effects of using two levels of Sanyar prebiotics (powder and liquid) on growth performance, feed productivity, digestive enzyme activity and non-specific immunity of Cyprinus carpio juveniles in the biofloc system. Common carp (10.09 ± 0.45 g) were stocked into 18 tanks (35 L) in six treatments for 60 days, including: Control treatment without additive and with clean water (C), Control treatments without additive with Floc (FC), Floc treatments with 0.1 and 0.2 g (FP1 and FP2) powder prebiotic and Floc treatments with 1 and 2 ml (FL1 and FL2) liquid prebiotic per 100 g of basic diet. Water parameters are maintained at the standard level for this species. Total ammonia concentration (TAN) was statistically significant between experimental treatments. The growth of fish was obtained significantly higher and the feed conversion ratio was lower in FP1. The highest intestinal protease activity (8.42± 0.05) was obtained in FP1 treatment. The lowest serum cortisol and glucose were observed in FP1. The immunoglobulin and lysozyme serum in FP2 and FL1 were significantly higher than other treatments. The results of this study showed that the use of 0.1 g of Sanyar prebiotic powder per 100 g of basic diet in the biofloc system could improve growth performance, and the immune status of C. carpio.
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Keywords

Journal of Fisheries
Volume 75, Issue 1 - Serial Number 1
February 2022
Pages 137-152

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