The effects of water temperature and stocking density on survival,feeding and growth of the juveniles of the hybrid yellow catfish from Pelteobagrus fulvidraco (♀) × Pelteobagrus vachelli (♂) |
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| Authors: | Guosong Zhang Shaowu Yin Yayuan Wang Li Li Xiaolu Wang Yandong Ding Xue Zang Hongwei Zhang Yihe Jia Yali Hu |
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| Affiliation: | 1. College of Life Sciences, Key Laboratory of Biodiversity and Biotechnology of Jiangsu Province, Nanjing Normal University, Nanjing, Jiangsu, China;2. Co‐Innovation Center for Marine Bio‐Industry Technology of Jiangsu Province, Lian Yungang, Jiangsu, China |
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| Abstract: | In this study, we aimed to investigate the effects of water temperature and stocking density on the survival, feeding and growth of the juveniles of the hybrid yellow catfish from Pelteobagrus fulvidraco (♀) × Pelteobagrus vachelli (♂) using the parameters as follows: survival rate (%), feeding rate (% day?1), feed conversion ratio, specific growth rate (% day?1), coefficient of variation (%), productivity (P, g m?3 day?1) and condition factor. We reared the juvenile fish (3.25 ± 0.21 g) at 12 water temperature levels and six stocking density levels (each level included three aquaria in two batches of experiments). The results showed that all groups survived at a temperature range of ≤35°C during a 46‐day experimental period, and they could achieve a high growth at a water temperature range of 26–32°C. The optimal temperature for growth was 29.8°C. Productivity peaked at a stocking density of 1.9 kg m?3. Our results indicated that the hybrid is very suitable for commercial aquaculture. |
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| Keywords: | hybrid yellow catfish water temperature stocking density growth feeding |
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