trafik ceza easy agario agario games agario agario unblocked agario modded agarioprivate The Growth Performance of Nile Tilapia in Earthen Ponds Located at Different Altitudes of Toke Kutaye Woreda, Ethiopia | D. 1 | International Journal of Aquaculture

Research Article

The Growth Performance of Nile Tilapia in Earthen Ponds Located at Different Altitudes of Toke Kutaye Woreda, Ethiopia  

Dereje  D.1 , Prabha L. D.1 , Sreenivasa  V.1 , Abebe  G.1
1 Department of Biology, Ambo University, Ambo, Ethiopia
2 Department of Zoological sciences, Addis Ababa University, Ethiopia
Author    Correspondence author
International Journal of Aquaculture, 2015, Vol. 5, No. 34   doi: 10.5376/ija.2015.05.0034
Received: 09 Oct., 2015    Accepted: 24 Nov., 2015    Published: 18 Jan., 2016
© 2015 BioPublisher Publishing Platform
This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:

Dereje D., Devi L.P., Sreenivasa V., and Abebe G, 2015, The growth performance of Nile Tilapia in earthen ponds located at different altitudes of Toke Kutaye Woreda, Ethiopia, International Journal of Aquaculture, 5(35): 1-7

Abstract
The research was conducted to investigate the growth performance of Oreochromis niloticus fingerlings and plankton production in earthen ponds located at 2,500 msl, 2,100 msl and 1,710 msl in the west shoa zone, Ethiopia. The stocking density of each pond was 2/m2. The initial average length and weight of the fingerlings were 5±0.03 cm and 5.7±0.02 gm, respectively. The study has been conducted for a period of 120 days (October 2011-February 2012). Before stocking, the ponds were treated with quicklime (0.05 kg/m2) and fertilized with cow manure (0.1 kg/m2/week). Supplementary feed (wheat bran and nuog cake)was provided at the rate 3% of body weight throughout the growing period. Growth measurements were recorded at 15 days interval. The results showed that the final weight of O. niloticus was 18.2±0.02, 52.4±0.97 and 63.7±0.50 g at the altitude of 2,500 msl, 2,100 msl and 1,710 msl, respectively. The average daily body weight gain was 0.2±0.00, 0.7±0.05 and 0.8±0.04 gm in 2,500 msl, 2,100 msl and 1,710 msl, respectively. Survival rate was higher at the altitude of 1,710 msl. Moreover, specific growth rate, average feed conversion ratio, condition of fish, plankton abundance and distribution were significantly (P<0.05) varied in the three altitude ponds.
Keywords
Altitude; Growth performance; Nile tilapia; Plankton
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