Question 2
- What is the function of specimen B in fish feed? [2 marks]
- List three feed ingredients each that could be used in place of:
(i) Specimen B;
(ii) Specimen C. [6 marks]
(c) State two uses each of specimens D and E. [4 marks]
(d) State three ways of prolonging the lifespan of specimen E. [3 marksObservation
This question was attempted by many candidates and their performance was good. However in Question 2(b), many candidates were mentioning the class of food to which specimen B belongs which is carbohydrates instead of giving the functions as required. In Question 2(c) many candidates could not state the uses of specimen D and E specifically in fish production and others could not differentiate between the two specimens.
The expected answers include:
(a) Function of specimen B (Maize) in fish feed
- Energy supply / provide energy
- Binding agent / feed binder
- Source of vitamin E
(b) (i) Feed ingredients that could be used in place of specimen B (Maize)
- Millet
- Sorghum/ guinea corn
- Wheat
- Barley
- Soya bean hull
- Rice
- Cassava
(ii) Feed ingredients that could be used in place of Specimen C (soyabeans)
- Cotton seed
- Fish meal
- Poultry by products/offal/internal organs
- Groundnut cake meal
- Coconut / copra
- Maggot meal
- Sunflower meal
- Palm kernel cake
- Shrimp meal
- Blood meal
- Insect meal
- Meat and bone meal
- Feather meal
(c) Uses of specimen D (Digger)
- Removal/ uprooting of plant roots
- Digging or excavating the soil / breaking up soil
- Splitting / cutting roots
Uses of specimen E (Shovel)
- For mixing of materials e.g. sand and cement
- For loading/ packing earth
- For levelling the soil / shaping
- For spreading manure over pond
(d) Ways of prolonging the life span of specimen E (Shovel)
- Washand dry / clean after use
- Oil/ lubricate/ grease the metal parts
- Replace worn out/ damaged parts
- Keep wooden handle away from termites/ fire
- Store in a cool dry place
- Repair/ weld/ tighten loose parts
- Keep away from rain/ moisture
- Sharpen/straighten the blunt or curved edges after use