Effects of plant- Ulva lactuca based diet supplementation with exogenous enzymes or yeast on growth performance, feed utilization, and biochemical parameters in Nile tilapia (Oreochromis niloticus).”
El-mousalamy, A., Amer, T., mohamed, S., Ali, Y. (2022). Effects of plant- Ulva lactuca based diet supplementation with exogenous enzymes or yeast on growth performance, feed utilization, and biochemical parameters in Nile tilapia (Oreochromis niloticus).”. EKB Journal Management System, 2022(1), 8-19. doi: 10.21608/bfszu.2022.56618.1056
Amany Mohamed El-mousalamy; Talaat nagy Amer; sally zidan mohamed; Yossef Mohamed Ali. "Effects of plant- Ulva lactuca based diet supplementation with exogenous enzymes or yeast on growth performance, feed utilization, and biochemical parameters in Nile tilapia (Oreochromis niloticus).”". EKB Journal Management System, 2022, 1, 2022, 8-19. doi: 10.21608/bfszu.2022.56618.1056
El-mousalamy, A., Amer, T., mohamed, S., Ali, Y. (2022). 'Effects of plant- Ulva lactuca based diet supplementation with exogenous enzymes or yeast on growth performance, feed utilization, and biochemical parameters in Nile tilapia (Oreochromis niloticus).”', EKB Journal Management System, 2022(1), pp. 8-19. doi: 10.21608/bfszu.2022.56618.1056
El-mousalamy, A., Amer, T., mohamed, S., Ali, Y. Effects of plant- Ulva lactuca based diet supplementation with exogenous enzymes or yeast on growth performance, feed utilization, and biochemical parameters in Nile tilapia (Oreochromis niloticus).”. EKB Journal Management System, 2022; 2022(1): 8-19. doi: 10.21608/bfszu.2022.56618.1056

Effects of plant- Ulva lactuca based diet supplementation with exogenous enzymes or yeast on growth performance, feed utilization, and biochemical parameters in Nile tilapia (Oreochromis niloticus).”

Bulletin of Faculty of Science, Zagazig University
Article 2, Volume 2022, Issue 1, April 2022, Page 8-19  XML PDF (976.49 K)
Document Type: Original Article
DOI: 10.21608/bfszu.2022.56618.1056
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Authors
Amany Mohamed El-mousalamy1; Talaat nagy Amer2; sally zidan mohamed email 3; Yossef Mohamed Ali4
1chemistry department, faculty of science, Zagazig University
2Agricultural research center (central laboratory of aquaculture research)
3Biochemistry department faculty of science zagazig university
4biochemistry department, faculty of veterinary medicine, Zagazig University
Abstract
The growing aquaculture sector demands the development of sustainable and cost-effective feed ingredients. An 12-week feeding trial was conducted to determine the effect of supplementation of plant-based diets of Ulva lactuca (Ulva) with exogenous enzymes (mono or multi-enzyme complex) and yeast on growth performance ,feed utilization and biochemical parameters of Nile tilapia (Oreochromis niloticus). Six isonitrogenous and isocaloric diets were formulated to supply 28% protein and 425 kcal/100 g diets. The treatments were: (1) positive control diet (fishmeal-based), (2) negative control diet (Ulva based diet), (3) Ulva based diet + 1.50 g phytase/kg, (4) Ulva based diet + 1.50 g xylanase/kg and (5) Ulva based diet + 3 g yeast /kg (6) Ulva based diet + 1.50 g multi-enzyme complex /kg. The fish that were fed the fishmeal-based diet and the Ulva diets supplemented with different enzymes or yeast had significantly better growth performance and survival rate values compared to those fed Ulva alone. The highest values of blood parameters (Hb, RBCs, and Ht) were observed in fish fed the multi-enzyme supplemented diet. There were no significant differences in total protein serum and albumin among the experimental treatments. The results suggest that supplementation of Ulva based diet with enzymes or yeast can improve the nutrient utilization and growth performance of Nile tilapia while remaining cost-effective.
Keywords
Nile tilapia; Ulva; exogenous enzymes; growth performance; hematology
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