Question 4
Study specimens N and O carefully  and answer the questions that follow.
(a) Name five fish feed ingredients that could be used in preparing specimen N. [5 marks]
(b) Give two advantages of using specimen N to  feed fish.  [2 marks]
(c) State three advantages and three disadvantages of using specimen O in transporting fish. [6 marks]
Observation
The performance of candidates in this question was fair.
In part (a), majority of the candidates were able name fish feed ingredients. However, some of them lost marks to spelling error. Few of the candidates wrote concentrates and water as fish feed ingredients.
In part (b), majority of the candidates gave two advantages of using specimen N to feed fish.
In part (c), majority of the candidates stated three advantages of using specimen O in transporting fish. However, majority of them could not state the disadvantages.
In part (d), majority of the candidates name two other items that could be used in transporting fish.
The expected answers include:
(a)   -       Maize  / corn
    -           Oyster  shell
    -           Blood  meal
    -           Fish  meal
    -           Wheat  bran / offal
    -           Groundnut  cake
    -           Soya  bean
    -           Rice  bran
    -           Bone  meal
    -           Brewery  waste
    -           Agro  industrial by-products
    -           Fish  oil
    -           Premix  / vitamin / minerals
    -           Balm  kernel cake
    -           Chicken  waste / offal
    -           Cotton  seed meal / cake
    -           Sorghum
    -           Millet
(b) -           Provides  balanced nutrient / Rich in nutrients
    -           Improves  fish growth / yield
    -           It  is handy / easy to transport / to apply
    -           Easy  to store
    -           It  is readily expensive
                        Advantages
    (c) -    Free  flow of air minimizes fish spoilage
    -           Cheap  / affordable
    -             Readily available locally
    -           Easy  to handle
    -           Size  could be small for easy transportation
    -           Enhances  water drainage from fish
                        Disadvantages
    -           Could  be bulky when large in size
    -           It  is fragile
    -           Could  cause fish breakage
    -           Could  cause injury to humans
    -           Basket  can grow mould / fungi
    -           Cannot  transport live fish
(d)  -           Nylon  / polythene
    -           Wooden  box
    -           Cartons
    -           Plastic  bowls / box
    -           Fabric  / cotton
    -           Jute  bag / sac
    -           Metal  foils / trays
    -           Leaves
