Anne  Kimotho, Elijah  Oyoo-Okoth, Esther  Kitur, Charles  C. Ngugi, 
    Growth Performance of Nile tilapia Cultured under Different Cage Stocking Densities in a
Cage-cum-pond System Based on Laboratory Condition and among Farmers (Kirinyaga,
Kenya),
    Journal of Fisheries International,
    Volume 15,Issue 3-4,
    2020,
    Pages 22-29,
    ISSN 1817-3381,
    jfish.2020.22.29,
    (https://makhillpublications.co/view-article.php?doi=jfish.2020.22.29)
    Abstract: Growth performance of Nile tilapia at cage
densities of 25, 50 and 75 fish m<sup>&#150;3</sup> was evaluated in a
cage-cum-pond system under laboratory conditions and
among farmers practical field conditions. Stocking density
significantly (p<0.05) affected weight, SGR, FCR and
survival in laboratory conditions and among farmers
negatively but not observed changes in ponds (p>0.05).
Interaction between stocking density and rearing
condition did not affect survival of <i>O. niloticus</i> in ponds
(p>0.05) but was observed in the cages (p<0.05). Growth
performance indicators were significantly (p<0.05)
negatively correlated with stocking density, albeit weakly
in practical farming conditions. This study demonstrates
the neglected link between research outcomes and
practical condition of culture. It suggest that research
outcomes under laboratory environment is rarely the case
in practical field conditions, especially in developing
countries, rendering rigorously controlled research
findings meaningless in improving farmer&#146;s outcomes.
    Keywords: laboratory conditions;stocking density;growth performance;Cages-cum-pond system;practical field conditions 5