waecE-LEARNING
Fisheries Paper 2, May/June 2014  
Questions: 1 2 3 4 5 6   Main
General Comments
Weakness/Remedies
Strength







































Question 3
  • QUESTION 3
    (a)        State the optimum ranges for three water parameters in a fish pond.     [3 marks]
    (b)Name three energy yielding and three protein yielding ingredients in fish feeds. [6 marks]  
    (c)        (i)         Define the term feeding frequency.                                              [6 marks]
                            (ii)        Describe three feeding methods in aquaculture.                          [9 marks]
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OBSERVATION

This question was poorly attempted by the candidates.  In 3(a-b), most of the candidates were unable to state the optimum ranges for water parameters in a fish pond but majority of them were able to name energy yielding and protein yielding ingredients in fish feeds.  More so, in 3(c)(i-ii), majority of the candidates could neither define feeding frequency nor describe the feeding methods in aquaculture.       
The expected answers include:
3 (a) Optimum ranges for water parameters in a fish pond
                         -    Dissolved Oxygen : 5.0 – 8.0mg/l
                          -    pH: 6.5 – 8.0/8.5
                          -   Turbidity/Transparency: less than 30cm sec chi disc measurement
                          -   Temperature: 20 – 300C
                          -   Nitrite: < 0.25 ppm
                          -   Ammonia < 0.05ppm
                          -   Alkalinity 50 – 200ppm(m/l)
            (c)(i) Definition of feeding frequency
                     This is the number of times fish are fed daily
               (ii) Description of feeding methods  in aquaculture
                    Broadcasting
                    -       This involves scattering of fish feed on pond surface
                    -       It is usually done in tanks/ponds
                    -       It is done in earthen pond when the fish is young
                    -       It ensures wide spread distribution of feed
                    -       It is labour intensive
                    -       Feed can be blown off by wind
                        
                    Spot/point feeding
                    -     Involves feeding of fish at specific point of the pond
                    -     Commonly practised in earthen ponds
                    -     Fish are easily monitored using this method
                    -     It can aid fish pilferage

                    Automated/Automatic feeding
                     -       It is a mechanical way of feeding fish
                     -      There is less wastage of feed/proper feed utilisation
                     -      Less labour intensive
                     -      No direct observation of fish

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