Effects of Ulva lactuca as a dietary supplement on growth, antioxidants and digestive enzymes of Nile tilapia (Oreochromis niloticus) under intermittent fasting and regular feeding regimes in the recirculating system
Yazarlar (5)
Seval Dernekbaşı Sinop Üniversitesi, Türkiye
Emin Karataş
Türkiye
Dr. Öğr. Üyesi Keriman YÜRÜTEN ÖZDEMİR Kastamonu Üniversitesi, Türkiye
Dilara Kaya Öztürk Sinop Üniversitesi, Türkiye
İsmihan Karayücel Sinop Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı JOURNAL OF APPLIED PHYCOLOGY (Q1)
Dergi ISSN 0921-8971 Dergi Bilgileri (2025)
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 12-2025
Cilt / Sayı / Sayfa 37 / 6 / 4705–4718 DOI 10.1007/s10811-025-03659-x
Makale Linki https://link.springer.com/article/10.1007/s10811-025-03659-x
UAK Araştırma Alanları
Ziraat, Orman ve Su Ürünleri
Özet
This study evaluated the effects of dietary supplementation with Ulva lactuca (5% = ULM5; 10% = ULM10) on Nile tilapia (Oreochromis niloticus) under prolonged intermittent fasting (1 week fasting/1 week feeding for 12 weeks). While fasting reduced growth and body composition parameters, protein content remained above 20% across all groups. ULM5 improved growth performance under normal feeding, whereas ULM10 enhanced antioxidant defense [↑SOD (superoxide dismutase), ↑CAT (catalase), ↓LPO (lipid peroxidation)], particularly during stress. Digestive enzyme activities declined during fasting but recovered in U. lactuca-fed groups. These findings suggest that U. lactuca, especially at 10%, may support physiological resilience and oxidative balance during nutritional stress, highlighting its potential as a functional feed additive in sustainable aquaculture.
Anahtar Kelimeler
Ulva lactuca | Oreochromis niloticus | Enzyme | Antioxidants | Feeding regime