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Evaluation stress indicators, metabolic and hematology of common carp (Cyprinus carpio) fingerling fed Sanyar prebiotic and resistance to catching and transportation stress in biofloc-based aquaculture system
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Samira Jafaryan   , Hossein Adineh , Mohammad Farhangi * , Mohammad Harsij , Zia Kordjazi |
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Abstract: (567 Views) |
| Fish transportation and catching is a common activity in aquaculture that induces stress and immunosuppression. The aim of this study was to investigate the effects of using Sanyar prebiotic (powder and liquid) in biofloc environment on metabolic activity, stress indices, and hematological of common carp (Cyprinus carpio) under catching and transporting stress. Diets containing prebiotic (0.1 and 0.2 g powder; FP1 and FP2) and (1 and 2 ml liquid, FL1 and FL2) and control group without additive (FC) in biofloc system and the control group without additive with clean water (C) were fed to common carp for 60 days. At the end of the rearing period, to simulate catching stress, the fish were followed in the tanks with hand fishing nets for 10 minutes. For stress caused by long transportation with a stocking density of 1 kg (6 treatments and each with 3 replications), plastic bags (20 liters of water and 20 liters of oxygen) were used for 12 hours. After applying stress, blood sampling was done separately from the fish in two groups (catching and transportation). Metabolic activities (hepatic enzymes, urea, and creatinine), Red blood cells, hemoglobin, and hematocrit had a significant decrease in prebiotic treatments under stress. Cortisol concentration in the FC treatment (catch) and in the control treatment (transportation) significantly increased compared to other experimental treatments. In general, the results showed that using Sanyar commercial prebiotics in the biofloc environment reduces the stressful effects of catching and transportation for common carp. |
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| Keywords: Prebiotics, biofloc, common carp, fishing stress and transportation |
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Type of Study: Research |
Subject:
Special
Received: 2023/04/17 | Accepted: 2023/05/6 | Published: 2024/01/21
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