NIGHT FEEDING REGIME IMPROVES WATER QUALITY, GROWTH PERFORMANCE AND FEEDING BEHAVIOUR OF EUROPEAN EELS, Anguilla anguilla
This study was aimed to explore differences between day and night feeding of farmed European eels (Anguilla anguilla) on: (1) the growth and feeding behaviour of eels; and (2) the subsequent impact on the quality of the culture water. A 30 day field experiment was conducted in which 40 European eel...
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| Format: | Article |
| Language: | English |
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University of Ljubljana Press (Založba Univerze v Ljubljani)
2019-03-01
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| Series: | Slovenian Veterinary Research |
| Online Access: | https://www.slovetres.si/index.php/SVR/article/view/799 |
| _version_ | 1797224983711186944 |
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| author | Abdel-Hay Abdel-Hay Sara Hamed Mohamed Zayd Fatma Abouelenien Ibrahim Rehan Seham El-Kassas Amany Deyab Radi Mohamed |
| author_facet | Abdel-Hay Abdel-Hay Sara Hamed Mohamed Zayd Fatma Abouelenien Ibrahim Rehan Seham El-Kassas Amany Deyab Radi Mohamed |
| author_sort | Abdel-Hay Abdel-Hay |
| collection | DOAJ |
| description |
This study was aimed to explore differences between day and night feeding of farmed European eels (Anguilla anguilla) on: (1) the growth and feeding behaviour of eels; and (2) the subsequent impact on the quality of the culture water. A 30 day field experiment was conducted in which 40 European eels (186.4 ± 9.26 g) were arbitrarily allocated into two replicate concrete ponds (200 x 100 x 125cm) that were divided into two treatment groups, one receiving feed by day (DF) and the other receiving feed at night (NF). Results revealed a significant improvement in eel's growth performance (larger final weight and faster growth) of the fish that were fed by night (NF). Moreover, feeding behaviour was also improved in the NF group with a significantly shorter latency to start feeding and shorter feeding duration. As a consequence of improved feeding behaviour, more favourable water quality conditions (higher dissolved oxygen concentrations and lower ammonia concentrations) were observed in the NF group. In conclusion, feeding eels by night could considerably enhance the culturing of eels by promoting enhanced growth and feeding behavior, and simultaneously improving water quality.
Key words: feeding regime; European eel; behaviour; nocturnal feeding; growth; performance
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| first_indexed | 2024-04-24T14:01:47Z |
| format | Article |
| id | doaj.art-03598ec24f6f4c668c99397a1f556dc7 |
| institution | Directory Open Access Journal |
| issn | 1580-4003 2385-8761 |
| language | English |
| last_indexed | 2024-04-24T14:01:47Z |
| publishDate | 2019-03-01 |
| publisher | University of Ljubljana Press (Založba Univerze v Ljubljani) |
| record_format | Article |
| series | Slovenian Veterinary Research |
| spelling | doaj.art-03598ec24f6f4c668c99397a1f556dc72024-04-03T12:39:24ZengUniversity of Ljubljana Press (Založba Univerze v Ljubljani)Slovenian Veterinary Research1580-40032385-87612019-03-015622-Suppl10.26873/SVR-799-2019NIGHT FEEDING REGIME IMPROVES WATER QUALITY, GROWTH PERFORMANCE AND FEEDING BEHAVIOUR OF EUROPEAN EELS, Anguilla anguillaAbdel-Hay Abdel-HaySara HamedMohamed ZaydFatma AbouelenienIbrahim RehanSeham El-KassasAmany DeyabRadi Mohamed This study was aimed to explore differences between day and night feeding of farmed European eels (Anguilla anguilla) on: (1) the growth and feeding behaviour of eels; and (2) the subsequent impact on the quality of the culture water. A 30 day field experiment was conducted in which 40 European eels (186.4 ± 9.26 g) were arbitrarily allocated into two replicate concrete ponds (200 x 100 x 125cm) that were divided into two treatment groups, one receiving feed by day (DF) and the other receiving feed at night (NF). Results revealed a significant improvement in eel's growth performance (larger final weight and faster growth) of the fish that were fed by night (NF). Moreover, feeding behaviour was also improved in the NF group with a significantly shorter latency to start feeding and shorter feeding duration. As a consequence of improved feeding behaviour, more favourable water quality conditions (higher dissolved oxygen concentrations and lower ammonia concentrations) were observed in the NF group. In conclusion, feeding eels by night could considerably enhance the culturing of eels by promoting enhanced growth and feeding behavior, and simultaneously improving water quality. Key words: feeding regime; European eel; behaviour; nocturnal feeding; growth; performance https://www.slovetres.si/index.php/SVR/article/view/799 |
| spellingShingle | Abdel-Hay Abdel-Hay Sara Hamed Mohamed Zayd Fatma Abouelenien Ibrahim Rehan Seham El-Kassas Amany Deyab Radi Mohamed NIGHT FEEDING REGIME IMPROVES WATER QUALITY, GROWTH PERFORMANCE AND FEEDING BEHAVIOUR OF EUROPEAN EELS, Anguilla anguilla Slovenian Veterinary Research |
| title | NIGHT FEEDING REGIME IMPROVES WATER QUALITY, GROWTH PERFORMANCE AND FEEDING BEHAVIOUR OF EUROPEAN EELS, Anguilla anguilla |
| title_full | NIGHT FEEDING REGIME IMPROVES WATER QUALITY, GROWTH PERFORMANCE AND FEEDING BEHAVIOUR OF EUROPEAN EELS, Anguilla anguilla |
| title_fullStr | NIGHT FEEDING REGIME IMPROVES WATER QUALITY, GROWTH PERFORMANCE AND FEEDING BEHAVIOUR OF EUROPEAN EELS, Anguilla anguilla |
| title_full_unstemmed | NIGHT FEEDING REGIME IMPROVES WATER QUALITY, GROWTH PERFORMANCE AND FEEDING BEHAVIOUR OF EUROPEAN EELS, Anguilla anguilla |
| title_short | NIGHT FEEDING REGIME IMPROVES WATER QUALITY, GROWTH PERFORMANCE AND FEEDING BEHAVIOUR OF EUROPEAN EELS, Anguilla anguilla |
| title_sort | night feeding regime improves water quality growth performance and feeding behaviour of european eels anguilla anguilla |
| url | https://www.slovetres.si/index.php/SVR/article/view/799 |
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