443/2 Agriculture Paper 2 form 4 Revision Kit model29082023002

SECTION A(30MKS)

1. Too much air in silo

Causes over heating
Causes decomposition

(½ x 2= 1mk)

2. Reasons for washing the udder.

To stimulate milk let-down
To remove dirt.

(½ x 2= 1mk)

3. Reason for lubricating.

Lower temperature
Reduce friction
Clean engine parts
Increase compression
Prevents rusting.

(1 x 2=2mks)

4. Four qualities of a good creep feed.

Highly rich in digestible crude proteins
Highly palatable
Highly digestible
Free from contaminants
High in energy
Rich in vitamins
Rich in minerals e.g Fe

(½ x 4= 2mks)

5. Maintenance practices on secateurs.

Proper storage
Oil/paint for long storage
Clean after use
Repair damaged parts/broken parts.
Lighten loose nuts and bolts.
Sharpen cutting edge.

(½ x 4= 2mks)

6. Uses of wind power in the farm

Dry grains/fodder
/cleaning grains
Windmills/pumping water
Generating electricity

(½ x 4= 2mks)

7. Reasons for holding animals

Prevents wastage of dip wash
Prevents contamination of pastures
Prevent water contamination.

(1 x 2=2mks)

8. Adaptations of goats.

Maintain weight gain even in dry season.
Feed on variety of shrubs.
Adaptable to high temperature
Thin hair to reduce heat stress
Walk for long distance
Feed on low quality grasses
Small body/low feed requirement.

(½ x 4= 2mks)

9. Objective of livestock breeding.

Increase resistance to diseases
Increase tolerance to pests
Adapt animal to local environment.
Increase productivity
Increase prolificacy
Enhance good mothering ability
Maintain uniformity in colour.

(½ x 4= 2mks)

10. Factors affecting quality of honey

Type of hive
Method of processing
Method of harvesting
Types of flowers used
Composition of the honey
Stage of honey maturity
Season of the year.

(½ x 4= 2mks)

11. Viral diseases of cattle

Foot and mouth
Rinderpest
Yellow fever
Rift Valley fever
Rabbies
Blue tongue
Lumpy skin
Ephemeral fever
2-day disease

( 1 x 2=2mks)

12. Methods of strengthening concrete

Use correct ratio of sand , cements and balance
Watering
Proper mixing
Reinforcing with metal

(1 x 2 = 2mks)

13. Functional difference

(i) Stock and die – used in cutting threads in pipes while

Pipe cutter – is used in cutting pipes into desired sizes.

(1 x 1 = 1mk (mark as a whole)

(ii) Ball pein hammer– Used in riveting and straightening metal sheets while

Claw hammer is used in driving and removing nails from wood or straightening nails.

(1 x 1 = 1mk (mark as a whole)

14. Methods used in identifying goats.

Neck straps and chains
Tattooing
Ear notching
Ear tagging

(1 x 2=2mks)

15. Reasons why bees swarm

Death of queen
Desire to multiply colony
Draught/lack of food
Unhygienic conditions
Presence of new queen
External disturbances
Destructions of hive
Destructions of brood.

(1 x 2=2mks)

16. Disadvantages of AI

Harmful traits/diseases can spread fast.
Require trained personnel/skills
Laborious
Low chances of conception due to poor timing/death of sperms.

(1 x 2=2mks)

SECTION C

21(a). Artificial rearing of day old chick to the point of lay

ü Ensure brooder corners are round

ü Provide enough brooding space depending on the number and age of chicks

ü Clean and disinfect the brooder house/equipment

ü Provide proper litter on the floor/wood shavings

ü Maintain appropriate range of temperature according to age of chicks

ü Maintain proper ventilation by adjusting the opening.

ü Provide fresh adequate and quality feed/chick mash.

ü Provide brooder with reliable and appropriate lighting/dim light.

ü Provide adequate and appropriate water according to the age/feeders.]

ü Control parasites by applying appropriate pesticides

ü Control diseases using appropriate methods e.g vaccination prophylactic drugs etc

ü Isolate and treat the sick chicks immediately

ü Keep proper records

ü Debeak birds 8 – 10 days towards end of brooding

(1 x 14=14mks)

(b) Characteristics of a poor layer

ü Combs and wattles are small and cold

ü The space between pelvic bones is narrow/2-3 fingers cannot fit in the space between the pelvic bones

ü Plumage is usually shinny, well preened or sometimes moulting

ü Vent, beak, shanks have yellow pigmentation

ü Space between the pin bone and pelvic bone is small/3-4 fingers cannot fit.

ü Eyes are dull, pale and yellow

ü Abdomen is hard/firm

ü The bird is lazy and dull

ü Bird becomes broody.

(1 x 6=6mks)

22(a) Advantages of tractor hire service

ü It is cheaper for a farmer to use hired tractor than buying one

ü The farmer does not incur maintenance and operating costs for the tractor.

ü The farmer does not incur risks of owing a tractor e.g theft, accidents

ü Farm operations are carried out on time/efficient.

(1 x 4=4mks)

(b) Functions of the fuel system components.

ü Tank- store fuel, screens fuel

ü sediment bowl- collect dirt in the fuel

ü lift pump – forces fuel into injector pump; used in bleeding fuel

ü fuel filters- remove dirt from fuel

ü injector pump-forces fuel through injector nozzles

ü injector nozzles- atomize fuel

ü air cleaners- remove dust from air.

Any 3 x 2 = 6mks)

(c) Maintenance of the battery

ü top up the electrolyte with distilled H₂O

ü Fix tightly to prevent spillage of electrolyte and knocking

ü Keep top surfaces clean against short circuiting

ü Clean terminals and coat with petroleum jelly

ü Keep vent holes/clear/open

ü Replace damaged vent plugs

ü Charge regularly

ü Avoid overcharging

ü Drain electrolyte for long storage

ü Ensure correct tension of generator fan belts

ü Tighten battery terminal connectors

(1 x 10=10mks)

23(a). Procedure

ü Fix the needle to the syringe

ü Withdraw the right amount from the bottle

ü Remove air/bleed needle

ü Disinfect site

ü Insert needle and push butt to release drug

ü Remove the needle

ü Release the animal.

( ½ x 6=3mks)

(b) Reasons for maintaining livestock in good health.

ü Increase quality of livestock products/work outputs/regular breeding

ü Increase quantity of livestock products/yields

ü Reduce spread of diseases

ü Increase profits/reduce costs of production

ü Increase productive life of livestock.

(1 x 6 = 6mks)

(i) Causal organism

Protozoan/coccidian elmeria/coccidia spp)

(1mk)

(ii) Livestock species attacked

§ Poultry

§ Calves

§ Young rabbits

§ Kids

§ Lambs

(any 2 x 1=2mks)

(iii) Symptoms of attack.

§ Diarrhoea

§ Blood stained dung

§ Emaciation

§ Ruffled coat

§ Dullness

§ Sudden death

(any 4 x 1=4mks)

(iv) Control measures

§ Treat appropriate/recommended drugs

§ Isolate infected animals

§ Maintain hygiene /cleanliness

§ Avoid communal waterers and drinkers

§ Provide adequate floor space in living quarters.

(any 4 x 1=4mks)

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443/2 Agriculture Paper 2 form 4 Revision Kit model29082023002

1. Too much air in silo

2. Reasons for washing the udder.

3. Reason for lubricating.

4. Four qualities of a good creep feed.

5. Maintenance practices on secateurs.

6. Uses of wind power in the farm

7. Reasons for holding animals

8. Adaptations of goats.

9. Objective of livestock breeding.

10. Factors affecting quality of honey

11. Viral diseases of cattle

12. Methods of strengthening concrete

13. Functional difference

14. Methods used in identifying goats.

15. Reasons why bees swarm

16. Disadvantages of AI

21(a). Artificial rearing of day old chick to the point of lay

(b) Characteristics of a poor layer

22(a) Advantages of tractor hire service

(b) Functions of the fuel system components.

(c) Maintenance of the battery

23(a). Procedure

(b) Reasons for maintaining livestock in good health.

(ii) Livestock species attacked

(iii) Symptoms of attack.

(iv) Control measures

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