Evaluation of the optimal temperature for digestive protease function in the hybrid catfish Clarias gariepinus × Heterobranchus longifilis
| dc.contributor.author | Martin-Culma, Nazly Yolieth | |
| dc.contributor.author | Bársony, Péter | |
| dc.date.accessioned | 2026-01-14T10:46:20Z | |
| dc.date.available | 2026-01-14T10:46:20Z | |
| dc.date.issued | 2025-12-02 | |
| dc.description.abstract | (1) Background: Water temperature is a key determinant of fish digestion. In vitro methods provide a reliable approach to assess enzyme activity, which is especially important in carnivorous catfish with protein-rich diets. Although the hybrid catfish Clarias gariepinus × Heterobranchus longifilis is widely farmed in Hungary, its optimal temperature for maximizing digestibility remains under investigation.; (2) Methods: Fish were reared at 23 ºC, 25 ºC, and 27 ºC, and stomach and proximal intestine content samples were collected, and it was determined the protease activity (3) Results: No statistically significant differences were observed in enzyme efficiency, crude protease activity (p > 0.05). Despite not significant differences, the stomach and intestinal, protease activity tended to be higher at 25 °C (3.41 ± 0.16 U/mL), and, while in the intestines was higher at 27 °C (2.03 ± 0.27 U/mL). Stomach activity was higher at 27 ºC, at 27 °C (2.03 ± 0.27 U/mL, respectively. (4) Conclusions: Stomach protease activity tended to be higher at 25 °C, while intestinal activity was highest at 25–27 °C. These results may indicate a better starting digestion that supports feed digestion. | en |
| dc.format | application/pdf | |
| dc.identifier.citation | Acta Agraria Debreceniensis, No. 2 (2025) , 65-70 | |
| dc.identifier.doi | https://doi.org/10.34101/actaagrar/2/16195 | |
| dc.identifier.issn | 2416-1640 | |
| dc.identifier.issue | 2 | |
| dc.identifier.jatitle | Acta agrar. Debr. | |
| dc.identifier.jtitle | Acta Agraria Debreceniensis | |
| dc.identifier.uri | https://hdl.handle.net/2437/402036 | en |
| dc.language | en | |
| dc.relation | https://ojs.lib.unideb.hu/actaagrar/article/view/16195 | |
| dc.rights.access | Open Access | |
| dc.rights.owner | by the Author(s) | |
| dc.subject | in vitro | en |
| dc.subject | fish digestion | en |
| dc.subject | protease activity | en |
| dc.subject | temperature | en |
| dc.title | Evaluation of the optimal temperature for digestive protease function in the hybrid catfish Clarias gariepinus × Heterobranchus longifilis | en |
| dc.type | folyóiratcikk | hu |
| dc.type | article | en |
| dc.type.detailed | idegen nyelvű folyóiratközlemény hazai lapban | hu |
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