Effect of re-feeding regime under different stocking density of Nile tilapia, O. niloticus on growth performance, nutritional efficiency and fish body composition
El-Dakar, A., Mouhmed, A., Elgamal, A., Amer, M., Shalaby, S., Abdel-Aziz, M. (2023). Effect of re-feeding regime under different stocking density of Nile tilapia, O. niloticus on growth performance, nutritional efficiency and fish body composition. EKB Journal Management System, 10(1), 1-9. doi: 10.21608/maj.2023.192473.1019
Ashraf El-Dakar; Aya Mouhmed; A Elgamal; Mohamed Amer; Shymaa Shalaby; Mohamed Fathy A Abdel-Aziz. "Effect of re-feeding regime under different stocking density of Nile tilapia, O. niloticus on growth performance, nutritional efficiency and fish body composition". EKB Journal Management System, 10, 1, 2023, 1-9. doi: 10.21608/maj.2023.192473.1019
El-Dakar, A., Mouhmed, A., Elgamal, A., Amer, M., Shalaby, S., Abdel-Aziz, M. (2023). 'Effect of re-feeding regime under different stocking density of Nile tilapia, O. niloticus on growth performance, nutritional efficiency and fish body composition', EKB Journal Management System, 10(1), pp. 1-9. doi: 10.21608/maj.2023.192473.1019
El-Dakar, A., Mouhmed, A., Elgamal, A., Amer, M., Shalaby, S., Abdel-Aziz, M. Effect of re-feeding regime under different stocking density of Nile tilapia, O. niloticus on growth performance, nutritional efficiency and fish body composition. EKB Journal Management System, 2023; 10(1): 1-9. doi: 10.21608/maj.2023.192473.1019

Effect of re-feeding regime under different stocking density of Nile tilapia, O. niloticus on growth performance, nutritional efficiency and fish body composition

Mediterranean Aquaculture Journal
Volume 10, Issue 1, June 2023, Page 1-9  XML PDF (802.82 K)
Document Type: Original Article
DOI: 10.21608/maj.2023.192473.1019
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Authors
Ashraf El-Dakar1; Aya Mouhmed2; A Elgamal3; Mohamed Amer3; Shymaa Shalaby4; Mohamed Fathy A Abdel-Aziz email orcid 5
1Department of Aquaculture and Biotechnology, Faculty of Aquaculture and Marine Fisheries, Arish University, Arish, Egypt
2Faculty of Agriculture, Suez canal University, Ismailia, Egypt
3Animal Production Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
4Aquaculture Department, Faculty of Fisheries, Suez University, Suez, Egypt
5Department of Aquaculture and Biotechnology, Faculty of Aquaculture and Marine Fisheries, Arish University, Arish, Egypt-
Abstract
A factorial rearing trail 4x2 was done to investigate compensatory growth of Nile tilapia (Oreochromis niloticus) in structural size and live weight in response to different deprivation periods and re-feeding. Four treatments were evaluated. The control group was fed to satiation two times a day and one day starvation and re-feeding six days (1/6) throughout the experiment. The other three treatment groups were starved for 2, 3 and 4 days and re-feeding 7, 11 and 14 days, (2/7),(3/11) and (4/14) respectively. O. niloticus were constructed in this experiment with initial primary weights of 21.62 ± 0.08 g. Fish were randomly fed twice daily and starved for four days and were constructed for fourteen days in two replicates to assess the cost of feeding, growth performance, feed use, and survival rate for 84 days in 16 fiberglass tanks. The results showed that the best final body weight and feed conversion ratio in the feeding regime system was 3/11 compared to the control. Feed restriction significantly (P ≤ 0.05) reduced the cost of feed. The lowest feeding cost was obtained by O. niloticus fish starved for three days compared to starving for two days, four days, and control. The cost of feeding was reduced by 30% when the feeding was limited to three days starving and re-fed eleven days compared with those fed six days and starved one day.
Keywords
Feeding regime; Deprivation; Starvation; Compensatory growth; Oreochromis niloticus
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