EFFECT OF DIETARY CRUDE PROTEIN LEVEL AND STOCKING RATE OF MONOSEX ALL MALE NILE TILAPIA REARED UNDER RECIRCULATING AQUACULTURE SYSTEM | ||||
Journal of Animal and Poultry Production | ||||
Article 1, Volume 7, Issue 1, January 2016, Page 1-13 PDF (556.04 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/jappmu.2016.48254 | ||||
View on SCiNiTO | ||||
Authors | ||||
N. F. Abdel-Hakim1; M. E. Lashin1; A. A. Alazab1; I. A. Radwan2; A. F.B. Abdelhamid1 | ||||
1Anim. Prod. Dept., Fac. of Agric., Al-Azhar Univ., Cairo, Egypt. | ||||
2Egyptian Aquaculture Centre, Kafr El-Sheikh, Egypt. | ||||
Abstract | ||||
To recognize the best dietary crude protein (CP) percentage and stocking rate (SR) of monosex Nile tilapia under recirculating aquaculture system, two CP levels (25 & 32 %) and two SR (140 & 210 / m3) were used for 168 days. The obtained results revealed that feeding fish 32 % CP-diet at SR of 140 fish / m3 resulted in the best final bodyweight, average daily gain, specific growth rate, feed conversion, survival, energy utilization, and return. Whereas, 32 % CP at 210 fish / m3 was responsible for best protein productive value, body weight (with lowest inedible parts percentage), carcass protein percent (with lowest fat %), and productivity / m3. So, it could recommend feeding Nile tilapia (under similar conditions to those of the present experiment) 32 % CP-diet and stocking rate of 140 fish / m3. | ||||
Keywords | ||||
Nile tilapia; monosex; crude protein; stocking rate; Aquaculture; recirculating system | ||||
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