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Investigation of the effects of the use of Nostoc sp. algae extract on some growth indicators of Siberian salmon (Acipenser baerii, Brandt, 1869)
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Anita Golpour *   , Seyed Abbas Hosseini , Seyed Ali Akbar Hedayati , Moazameh Kordjazi , Hamid Mohammadi Azarm , Fatemeh Abbasi |
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Abstract: (45 Views) |
The aim of the present study was to investigate the effects of Nostoc algae on the growth indices of Siberian sturgeon (Acipenser baerii). A total of 72 juvenile Siberian sturgeon with an average weight of 140 ± 4 grams were allocated to four treatment groups, each with three replicates. The treatments included a control diet (without algae extract), treatment one with 0.5% extract, treatment two with 1% extract and treatment three with 2% extract of Nostoc algae. The fish were fed over a period of 42 days. Biometric measurements were taken both at the beginning and at the end of the experimental period to evaluate the growth indices. Data analysis at the end of the experiment revealed that specific growth rate (SGR) and weight gain (WG) were highest in the 2% algae treatment, while the control group had the lowest performance. The highest feed conversion ratio (FCR) was achieved in the control group, while the lowest FCR was observed in the 2% algae group. The best condition factor (CF) was recorded with the 0.5% algae treatment, while the lowest CF was associated with the 1% algae treatment (P < 0.05). Overall, these results indicate that the addition of Nostoc algae at different percentages significantly improved the growth indices of Siberian sturgeon. Based on the research results and the knowledge gained from the different treatments, the use of nostoc algae at a concentration of 2% seems to be the best option to improve the growth indices of Siberian sturgeon (Acipenser baerii). This treatment showed the highest growth and body weight gain compared to the other treatments. In addition, the treatment with 0.5% nostock algae seems to provide the highest condition factor (CF). However, in terms of weight gain and overall growth, the 2% treatment shows clear superiority.
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| Keywords: growth indices, Nostoc sp., Siberian sturgeon, nutrition |
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Full-Text [PDF 1087 kb]
(5 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2024/11/12 | Accepted: 2024/12/21 | Published: 2025/06/27
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