Nitrogen excretion patterns and postprandial ammonia profiles in Black Sea turbot Scophthalmus maeoticus under controlled conditions
Yazarlar (4)
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Israeli Journal of Aquaculture Bamidgeh (Q4) | ||
| Dergi ISSN | 0792-156X Dergi Bilgileri (2005) | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 01-2005 |
| Cilt / Sayı / Sayfa | 57 / 4 / 231–240 | DOI | – |
| UAK Araştırma Alanları |
Su Ürünleri Yetiştiriciliği
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| Özet |
| Measurements of the rate of nitrogenous excretion were carried out in two batches of young Black Sea turbot (small 42 g, large 72 g) at 12±1 C under natural light conditions (10 h light: 14 h dark and 13 h light: 11 h dark, respectively). The ammonia nitrogen excretion rates of fish starved for 48 hours were 0.20±0.05 mg-N for the small fish and 0.18±0.09 mg-N/100g fish/h for the large. Fish were then fed a pellet diet containing 8.3% nitrogen at average rations of 0.67% and 0.59% of the body weight, respectively, for four days. On the fourth day, ammonia nitrogen excretion rates were evaluated. In both batches, the rates were 2-3 times higher immediately after feeding than in the starved fish, reaching a peak 3-6 hours after feeding and declining afterwards. For the small and large fish, respectively, 21% and 20% of the consumed nitrogen was excreted as ammonia nitrogen, 6% and 7% as urea nitrogen, and 8% and 4% as feces nitrogen within 24 hours after feeding. |
| Anahtar Kelimeler |
| Ammonia | Black Sea turbot | Intensive fish culture | Nitrogen excretion | Scophthalmus maeoticus |
