Growth Performance and Feed Utilization of Hybrid Red Tilapia, Oreochromis niloticus (Linnaeus) X Oreochromis mosambicus (Peters) Fed Different Dietary Protein and Energy Levels under Rearing in Seawater Conditions
A 3 X 2 factorial design of three dietary protein levels (25, 30 and 35%) and two levels of energy (18 and 20 MJ/kg) in three replications was conducted to investigate the proper dietary protein and energy levels for the growth of hybrid red tilapia, Oreochromis nilotics X Oreochromis mosambicus. Eighteen net cages (100 X 40 X 100 cm, L X W X H) were stocked with 10 fry of fish weighing 0.4 g/fish and fed to 16-weeks. No significantly differences (P>0.05) in final body weight, gain and specific growth rate were observed among fish fed diet containing different energy levels. However, at the dietary protein level of 25 and 30%, growth performance parameters were improved as dietary energy level increased from 18 to 20 MJ/kg. The improvement of growth, feed conversion, nutrient efficiency utilization were achieved with the diet containing 30% protein and 20 MJ/kg diet corresponding to P/E ratio of 15 g/kJ. Moisture and lipid contents were affected by dietary protein levels not by energy levels. Fish protein content tended to increase as protein level increased in the tested diets.
Y., E., A., S., & A, A. E. (2015). Growth Performance and Feed Utilization of Hybrid Red Tilapia, Oreochromis niloticus (Linnaeus) X Oreochromis mosambicus (Peters) Fed Different Dietary Protein and Energy Levels under Rearing in Seawater Conditions. Mediterranean Aquaculture Journal, 7(1), 12-21. doi: 10.21608/maj.2015.4629
MLA
El-Dakar Y.; Shalaby A.; Abd Elmonem A. "Growth Performance and Feed Utilization of Hybrid Red Tilapia, Oreochromis niloticus (Linnaeus) X Oreochromis mosambicus (Peters) Fed Different Dietary Protein and Energy Levels under Rearing in Seawater Conditions". Mediterranean Aquaculture Journal, 7, 1, 2015, 12-21. doi: 10.21608/maj.2015.4629
HARVARD
Y., E., A., S., A, A. E. (2015). 'Growth Performance and Feed Utilization of Hybrid Red Tilapia, Oreochromis niloticus (Linnaeus) X Oreochromis mosambicus (Peters) Fed Different Dietary Protein and Energy Levels under Rearing in Seawater Conditions', Mediterranean Aquaculture Journal, 7(1), pp. 12-21. doi: 10.21608/maj.2015.4629
VANCOUVER
Y., E., A., S., A, A. E. Growth Performance and Feed Utilization of Hybrid Red Tilapia, Oreochromis niloticus (Linnaeus) X Oreochromis mosambicus (Peters) Fed Different Dietary Protein and Energy Levels under Rearing in Seawater Conditions. Mediterranean Aquaculture Journal, 2015; 7(1): 12-21. doi: 10.21608/maj.2015.4629