Agriculture Paper 2 Marking Scheme
KCSE CLUSTER TESTS 27
Agriculture Paper 2
SECTION A (30 Marks)
Oxytocin
1 marks
- Poor milking technique
- Presence of strangers
- Inflicting pain to the animal
- Absence of the calf
- Change of routine/ milkman
1.5 marks
- Crutching is the removal/ clipping of wool around the reproductive system of the ewe
while ringing is the cutting of wool round the penis sheet of the ram to facilitate mating
1 marks
- 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
2 marks
- Ear tagging
- Ear notching
2 marks
- Body size
- Age
- Activity
- Level of production
2 marks
a) Trocar and canula (1x1) N/B reject trocar or canula alone
b) State the use of a ring spanner. (1 mk)
Opening and loosening specific sizes of bolts and nuts.
2 marks
- Hastens foetus growth and development
- It helps in accumulation of the body reservoirs for more milk production in the following lactation period
- Assists in the formation of colostrums for the calf
- Accumulation of body reserves gives energy to the cow during parturition
- Provides nutrients for the cow and calf for healthy and strong calf at birth
2 marks
Large white has broad snout and slightly dished while Land race has straight snout
 ii) Large white has upright ears with Land race drooping ears
2 marks
i) Taenia solium- pig, sheep or cattle
ii) Liver fluke Fresh water snail
1 marks
- Bolous gun
- Drenching gun/Dosing gun.
1 marks
- Soil type /hardness of the soil
- Cost of the tool
- Capital
- Desired depth of tillage
- Nature of the field
1 marks
- Overcrowding
- Pest infestation/ disease outbreak
- Sudden change of routine e.g. feeds
- Imbalanced diet
- Extreme temperatures
- Lack of feeds and water
- Too much handling
2 marks
- Where land is not accessible by a tractor
- Irregular shaped pieces of land
- Where the cost of hiring a tractor is high
- Where tractor for hiring are not available
– very steep slopes
2 marks
a) Give three functions of worker bees in the hive (1 ½mk)
- Caring the larvae/newly emerged larvae
- Foraging i.e. collection of nectar pollen and propolis
- Comb building
- Hive cleaning
- Water collection
- Guards the hive (2x1=2 mks)
1.5 marks
- Calliadra
- Leucaenia
2 marks
- Sterilizing the male
- Use of trap nets
1 marks
- Highly nutritious
- Highly palatable
- Easy to digest
2 marks
i) Crop
ï‚· Stores food temporarily
ï‚· Moistens the food
ii) Proventriculus Acts as the true stomach
iii) Gizzard crushes and grinds food
2 marks
SECTION B (20 Marks)
A Inlet pipe
B Dam crest /Dyke ( ½ x4=2mks)
C Spill away
D Outlet pipe
b) Repair dyke
 clean pond and remove foreign materials
 plant grass where necessary
 Remove undesirable vegetation (1x3=3
 Remove silt
5 marks
a) Insulate floor preventing heat loss
- Absorbs moisture avoiding dampness ( ½ x2=1
b) Wood shavings, saw dust, straw, Rice husks ½ x2=1
c) Reflect radiated heat back to concentrate within brooder
- Prevent chicks from straying far from heat source (1x1=1mk
d) Advantages of natural brooding
 Little Labour required
 Little skill required (1x2=2 mks)
 Less /No costs involved
5 marks
Spraying procedure
 Start with back line
 Then sides in a zigzag manner
 Spray belly upto for flanks
 Spray the udder
 Then sides of hindlegs
 Raise tail and spray between hind legs
 Then tail upto the tip
 Spray the neck shoulders to brisket foreleg
 Spray head
 Lastly inside of ears ½ x10=5 N/B Procedure must be followed
5 marks
i) Disc plough 1mk
ii) part Function
 Depth control wheel
- stabilize plough ( ½ )
Rear/furrow wheel ½ mk
– control side thrust /control the depth
 Disc ½ mk
- cut and invert soil ½ mk
iii) Maintenance practices
 Tighten loose bolt &nuts
 Replace /repair worn out parts
 Grease /Lubricate moving parts
 Clean after use
 Proper storage ½ x4=2mks
 Painting
5 marks
SECTION C (40 Marks)
a) Difference between two and four stroke engines.
b) State the advantages and disadvantages of animal power (6 marks)
Advantages
- Require no skill
- Cheaper to buy animals
- Work out put is high compared to man power
- Can work in areas where tractors would not
- They are better on a small area than tractors
Disadvantages
- They need a bigger portion for grazing
- Are slower than tractors
- Can damage crops when used for weeding
- They may get sick thus reducing work out put
20 marks
a) Preparation starts 7-10 days before farrowing
- clean and disinfect the farrowing pen
- Introduce warm bedding with farrowing crate
- Drench the pig to control internal parasite
- Use clean bedding material - Reduce sow’s ration a day to farrowing
- During farrowing ensure piglet are breathing
- Ensure they suckle colostrum within 6-12 hrs
- Disnfect naval cord - Remove after birth to prevent sow from eating it
- Bring sow to pen 3 days to farrowing - - Feed sow with bran (1x12=12marks)
b) Management practices for good health
- provide balanced ration to increase disease resistance
- select healthy breeding stock
- cull animals susceptible to certain diseases
- use appropriate breeding methods to avoid disease transmission
- provide proper housing e.g calf pens to avoid diseases.
- maintain high level of hygiene
- isolate or confine sick animals from healthy ones
- Treat sick animals
- impose quarantine incase of out breaks of notifiable diseases
- use prophylactic drugs e.g dewormers
- carry out regular vaccination
- control vectors such as ticks
- slaughter & dispose properly affected animal if cannot be cured.
20 marks
a) Mention five precautions taken when using work shop toois 5mks
 Tools should be put in a safer place
 Use the correct tool for the correct job
 Tools should be maintained in correct working condition
 The tools should be handled correctly
 Use safety devices like fire extinguishers
b) Give five general characteristics of dairy cattle breeds 5 mks
 Have straight top line
 Well set hind quarters
 Large well developed udder
 prominent milk vein
 Lean bodies with little flesh
 Have large stomach capacity
 Are docile with mild temperament
c) State and explain the predisposing factors of livestock diseases 10mks
 Age-some diseases are found in certain age groups
 Sex-e.g. orchitis for males and virginities for female animals
 Colour-animal with unpigmented skin with photo dynamic diseases
 Hygiene of surrounding – unhygienic are source of infection.
 Breed/species-some diseases are specific e.g. new castle with poultry and swine fever with pigs
 Production level-e.g. milk fever with high producing animals
 Change in weather/climate/environmental conditions may lead to diseases like pneumonia.
 Injury e.g. on teat can lead to mastitis.
20 marks