HOMABAY SUB – COUNTY JOINT EVALUATION EXAM 2014
JULY /AUGUST
443/2 AGRICULTURE
PAPER 2
MARKING SCHEME
SECTION A ( 30 MKS)
1.
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To prevent corrosion / rusting
To reduce friction
To reduce wear and tear
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Wash the sow with soap and water 7- 10 days before furrowing
Reduce feeding sow seams meal 3 days to furrowing
De-worm the sow 7-10 days to furrowing
Move the sow to the furrowing pen 3 days to furrowing
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water proof roof /leak proof roof
Easy to clean and to keep clean
Have proper ventilation
Vermin proof /with metal deflectors
Well built to contain load / strong enough
Easy to load and offload/easy entry
Damp proof /raised above the ground
Well lit
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A calf can be reared even after the death of the mother
Many calves can be neared at a time
( 2x1)
2.
3.
(4x½)
4.
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5.
6.
7.
The calf is given the correct amount of milk
Possible to keep accurate milk production records
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High quality females are used to produce embryos which are spread widely
Stimulate milk production in females not in milk
Mass production of superior offspring’s
Easier to transport embryos in test tubes
Embryos can be stored for long periods, waiting for a recipient female (2x1)
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Barbed wire /chain link
Stones
Cement :sand : Ballast /Concrete
Wood poles/ metal rods
4x ½ = 2 mks
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To stimulate milk let down
Remove physical dirt
To kill / remove disease causing organisms
1 mk
H-bay, Sub-county Form four 2014
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Agriculture paper 2 marking
8
9
10
11.
12.
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Brucellous/contagious abortion /orchids
Trichomiasis
Vibriosis
Vaginities
2x ½ = 1 mk
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Control deficiency diseases
Impart resistance to disease
Good physical appearance / good coat cover
2 mks
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Workshop tools and equipment
Gardening /Garden tools and equipment
Livestock production tools
Plumbing tools and equipment
Masonry tools and equipment
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Softening of the food
Storage of the food
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Dromedary
Bacterian
2 mks
2 x½ = 1 mk
2 x½ = 1mk
13 Stocking rate refers to the number of animals that can be supported per unit area of land
14,
15
16.
17
18
19
20
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East coast Fever
Anaplasmosis/Gall sickness
Red water
Heart water
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Romney marsh
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Mastitis
Milk fever
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Dry cow therapy
This is the infection of Mastitis control antibiotics into the teat after drying off a cow
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Pen mating: Is the use of only one cock to mate a flock of hens;
Flock mating ; Is where two or more cocks are used to mate hens
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To control foot rot disease
To prevent rams from injuring the ewes during mating
To facilitate easy movement / control lameness
mk
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Dullness
Aggressiveness when approached
Abnormal urination and defaecation
Rough hair coat / falling off of hairs
H-bay, Sub-county Form four 2014
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1x1 = 1mk
1x1 = 1
Agriculture paper 2 marking
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Rough dry skin
Dry and pale mucus membranes
Abnormal respiration rate
Abnormal pulse rate
Decline in production
SECTION B (20 MRKS)
21
a) Photo A : Deep litter system
b)
Photo B : Battery cage system
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C)
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½ mrks
1x½ = ½ mrk
Collection of clean eggs
Individual birds laying records are kept
Higher laying percentage
=mks
2 x 1
can not be used for brooding
Can not be used for natural mating
22)
21
Dropper
22
Intermediate post / standard /ordinary post
23
Barbed wire
24: straining post /strict
25 : corner post
c) Depth at 26 : 30
Distance at 27: 4.5
50cm
9.0 m
d) Uses of 21
 Reinforce the fence/prevent wire sag /maintain tension
 Percent animals from entering through the fence
 Strengthen the fence
23 a)
1:Eggs hatch and larvae emerge
4: Nymphs climb onto a 2nd host and feed
5 : Engorged nymphs drop down to lay eggs
6: Engorged female drops to lay eggs
4 x½ = 2 mks
b) Tick keeps on dropping off the animals at every stage of development , so it is not affected
by acaricides when the animal is sprayed / dipped
1x½ = 1 mk
c)
d)
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Ears
Base of the horns
Around the eyes
Tail switch
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Brown ear tick
Boot tick
East African boot tick
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H-bay, Sub-county Form four 2014
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Agriculture paper 2 marking
A: Top bar
B : Wire loop
C; Lid /covers /Top covers
b) A; For attachment of honey combs by bees
D; To separate honey from the brood
C)
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1x½ = ½ mrk
1 x ½ = ½ mrk
Hive tool
Smoker
SECTION C ( 40 MARKS)
Petrol Engine
i.
Uses petrol as fuel
ii.
Spark plug ignition
iii.
Has a carburetor
iv.
Has plugs for ignition
v.
Compression ratio is lower
8:1
vi.
Power from air –fuel mixture
vii.
Lighter
viii.
Petrol engines produce les
noise
ix.
Produces less smoke
x.
Needs
more
frequent
maintenance
Diesel Engine
i.
Uses diesel as fuel
ii.
Uses compression ignition
iii.
Has no carburetor
iv.
Has no plugs
v.
Compression rate ratio is higher
16 :1
vi.
Power from diesel
vii.
Heavier
viii.
Produce more noise
ix.
x.
Produce more smoke
Needs less frequent maintenance
b)
10 x 1 = 10 mks
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Daily maintenance of a tractor
Engine oil
Check the level with a dip stick and add if low
Battery
Check the level of electrolyte and distilled water to cover the plates
Fuel
Check and add if low
Greasing
Is done using the nipples on all greasing points
Fan belt
Tighten if loose
Radiator
Add water if level of water is low and remove vegetation
Air cleanses
Blow off any excessive dust
Oil baths (air cleaner)
Change oil if dirty
Nuts, Bolts ,pins
Tighten these if loose
Sediment bowl
Clean if clogged
H-bay, Sub-county Form four 2014
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10 x 1 = 10 mks
Agriculture paper 2 marking
26
a) Disease predisposing factors
Are conditions inside or outside the body of an animal which lead to the animal which contracting a
disease or injury
1x2 = 2mks
b)
c)
d)
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Age of the animal ; species of the animal
Sex of the animal ; Bred of the animal
Colour of the animal
Change of climate / environment
Heredity
Environment
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Overcrowding
Physical conditions as fatigue , weakness and pregnancy
Animal movement / Animal coming in contact wit animals
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Age
Stage of lactation
Udder attachment / pendulous udder
Incomplete milking
Medicinal injuries
Poor sanitation
Poor milking technique
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Proper feeding and nutrition : To prevent deficiency diseases and impart diseases resistance
Proper breeding and selection : Healthy animals should be selected for breeding
Proper housing : House should be well
ventilated , leak proof, well lit , easy to clean ,spacious, free from draught , and well drained
Isolation / separation of sick animals
Animals showing disease symptoms should be isolated /separated from the rest of the hard to avoid
further spread
Imposition of quarantine : in the event of an outbreak of notifiable disease , movement of animals and
their products should be restricted to prevent spread of diseases
Prophylactic measures / Treatment : Prophylactic measures such as administering prophylactic drugs ,
help to control diseases
Treatment : should be carried out to prevent disease attack and spread
Vaccination : Regular vaccination gives am animal immunity against certain diseases
Mass slaughter : Animals affected by highly infections and contagious diseases should be slaughtered
to prevent further spread of the disease
Use of antiseptics and disinfectants : Antiseptics can be use on open wounds e.g terramycin sprays ,
disinfectants contain germicidal chemicals help to control of are disease as scours in calves,fowl
typhoid, coccidiusis etc.
Control of vectors: Disease carrying agents like tsetse flies and ticks are controlled by use of appropriate
insecticides.
Use of healthy breeding stock / Artificial insemination
breeding stock : Artificial insemination help to prevent the spread of certain diseases e.g. Brucellosis
De-worming : Internal parasites be controlled by drenching of farm animals to help control parasites as
tapeworms ,round worms ,liver flukes etc
Rearing diseases resistant breeds : some livestock breeds are more tolerant to diseases than others eg
zebra cattle are tolerant to East Coast fever
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H-bay, Sub-county Form four 2014
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Agriculture paper 2 marking
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Trimming of hooves to minimize occurrence of foot not disease ;Ensure no sharp objects like cut wire I
pasture like bloat.
Any first 4 x2
8mks
27. a)
i.
Close breeding : Is the mating of very closely related animals eg between brother – sister or parent
children
ii.
Line breeding : Mating of distantly related animals that share a common ancestors e.g. cousin - cousin
iii.
Cross breeding : Mating of two animals from different breeds e.g. Friesian bull to Jersey cow
iv.
Out crossing - The mating of unrelated animals but of the same breed. Friesen cow in Kenya served
with semen of a Friesian cow in Kenya served with semen of Friesian bull from Britain
v.
Selection :
vi.
Is the process of allowing certain animals to be parents of the future generations while culling others
5 x2 = 10 mks
b)
Age :
Young animals that have pasteurized not more tan three times should be selected ; old animals are low and
poor breeders.
Level of performance
Only those animals with the highest production level should be selected
Physical fitness;
Animals selected should be free from a very physical defects as being mono-eyed , limping , irregular no of
teats ,scrotal hernia ,defective or weak backline
Health;
Animals selected must be healthy ; stick animals do not breed well ; those that frequently fall sick are expensive
to keep
Body conformation ;
Animals for breeding should be selected according to their proper body conformation e.g. dairy cow be wedge
shaped with a large udder e,t.c ; a dairy cow that appears blocky should be called
Temperament or behavior
Animals within a breed might have bad temperament or undesirable behavior as cannibal and egg eating in case
of poultry ; aggressiveness and kicking in case of dairy cattle
Quality of products :
Select – animals that give high products of good quality e.g. wool production  breeds that produce fine, long
elastic and pure white wool are selected .
Mothering ability
- Animals selected should have good mothering ability is natural instinct towards their young ones
Adaptability
- Animals selected should be well adapted to the prevailing climatic conditions in the area
Prolificacy
Select animals are highly prolific i.e. with ability to give birth to many offspring at a time (large litter)
in selective for pigs and rabbits
Any 1st 10 x 1
H-bay, Sub-county Form four 2014
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Agriculture paper 2 marking