O.O.  Ajiboye, A.F.  Yakubu, N.A.  Nwogu, E.D.  Olaji, T.E.  Adams, 
    Growth and Economic Performance of Nile Tilapia (<I>Oreochromis niloticus</I>) Fed Two Feed Type at Different Stocking Densities in Semi Flow Through Culture System,
    Journal of Fisheries International,
    Volume 8,Issue 2,
    2013,
    Pages 25-30,
    ISSN 1817-3381,
    jfish.2013.25.30,
    (https://makhillpublications.co/view-article.php?doi=jfish.2013.25.30)
    Abstract: The growth and economic performance of Nile tilapia (<I>Oreochromis 
  niloticus</I>) in relation to stocking density was evaluated in a semi flow 
  through culture system. Fingerlings weighing 6-8 g were held in densities of 
  158, 237 and 316 m<SUP>-3</SUP> in 12 circular fibre glass tanks each containing 
  1.9 m<SUP>-3</SUP> of water. The experimental animals were fed 2 types of feed: 
  MULTI feed (foreign) and NIOMR feed (local) of 32 and 44% Crude Protein (CP), 
  respectively for over 24 weeks. The overall growth rates showed significantly 
  (p&lt;0.05) highest growth, feed conversion and survival rate in treatment 2 
  (MULTI feed at 158 fish m<SUP>-3</SUP>) while significantly lowest growth rate 
  and feed conversion was recorded in treatment 5 (NIOMR feed at 158 fish m<SUP>-3</SUP>). 
  In terms of gross profit, treatments 2, 4 and 5 seemed more profitable with 
  values of 801.50, 59.78 and 153.43 Naira, respectively. The profit index, also 
  showed that treatments 3 and 5 had better profit index of 26.01 and 28.09, respectively 
  than other treatments. In addition, treatments 1 recorded the best incidence 
  of cost with a value of 5.69 followed by treatment 3 with value of 5.79. Treatments 
  2, 4 and 5 recorded values of 1.22, 1.01 and 1.02, respectively indicating that 
  those treatments were profitable unlike the other treatments. The results of 
  the study indicate that fish fed with MULTI feed and stocked at 158 fish m<SUP>-3</SUP> 
  in treatment 2 had the best FCR of 6.52. In addition, all water quality parameters 
  are within the acceptable and suitable range for proper growth of <I>O. niloticus</I>. 
  Based on the growth performance (final mean weight, survival rate, feed conversion 
  ratio) size of fish at harvest and benefit cost ratio, treatment 2 (stocking 
  density of 158 fish m<SUP>-3</SUP>) fed multi feed is recommended.
    Keywords: Nile tilapia;economic performance;yield;Growth;flow-through culture system