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