Agriculture Paper 2 Questions and Answers - Form 3 Mid Term 3 Exams 2023

Share via Whatsapp

« Previous Topic
Agriculture Paper 1 Questions and Answers - Form 3 Mid Term 3 Exams 2023

Next Topic »
Computer Studies Paper 1 Questions and Answers - Form 3 Mid Term 3 Exams 2023

Download PDF for future reference Get on Whatsapp for 50/-

SECTION A (30Marks)

Answer ALL questions from this section

Name the exoticbreed of cattle producing milk with highest butter fat content. (½ mk)
Give four reasons for identification in cattle management.(2mks)
State four bacterial diseases affecting cattle. (2mks)
Give four harmful effects of parasites in livestock. (2mks)
Highlight four functions of vitamins in animals (2mks)
State the gestation period of: (1mk)
1. Ewe
2. Sow
State three methods of selection in breeding (1 ½mks)
Give four qualities of a good vaccine. (2mks)
State any four signs that a sow would show before farrowing. (2mks)
What is cropping in aquaculture? (½mk)
State any four uses of a crush (2mks)
Differentiate between flushing and steaming up as used in livestock production. (1mk)
State four conditions necessary for incubation (2mks)
List three methods of extracting honey from the honey combs (1 ½ marks)
List four reasons for docking in sheep. (2mks)
State four advantages of keeping animals healthy (2mks)
Mention four disadvantages of natural mating as a method of breeding in dairy cattle (2mks)
Name any four breeds of dairy goats (2mks)

SECTION B (20 MARKS)

Answer ALL questions in this section in the spaces

The diagram below illustrates an activity carried out by a poultry farmer keeping layers. Study it carefully and answer the questions that follow
1. Name the activity illustrated above (1mk)
2. Give four abnormalities in the eggs that can be detected during the above activity (4mks)
3. State one function of the carton box in the activity illustrated above (1mk)
Below is a diagram of knapsack sprayer. Study it carefully and answer the questions that foll
1. Name the parts labeled B and D (2mks)
2. State one main maintenance practice that should be carried out on the knapsack sprayer (1mk)
3. State the function of the part labeled E and F (2mks)
The diagram below shows parts of a plunge dip. Study the diagram and answer the questions that follow.
1. Name the parts labeled A,B, and D (3mks)
2. Give one reason why cattle are held for some time in part labeled C (1mks)
3. State two maintenance practices carried out on part D (2mks)
The following diagram illustrates a disease symptom in cattle. Study it carefully and answer the questions that follow.
1. State the name of the disease (1 mk)
2. State two other causes of the disease mentioned above (2mks)

SECTION C (40 MARKS)

Answer any TWO questions from this section

1. Describe five factors to consider when selecting a breeding stock. (10mks)
2. Describe five control measures of diseases in livestock and give an example of a disease controlled by the measure.
  (10 mks)
1. Discuss mastitis disease under the following
  1. Causal organism. (1mk)
  2. Symptoms (3mks)
  3. Causes of the disease (4mks)
  4. Control measures (2mks)
2. State and explain the various factors that should be considered when siting farm structures (10mks)
1. Outline five factors considered when buying farm tools equipment to use (5mks)
2. Explain five predisposing factors of livestock diseases (5mks)
3. Explain factors a farmer should consider when selecting building materials for farm structures. (10mks)

MARKING SCHEME

SECTION A (30Marks)

Name the exotic breed of cattle producing milk with highest butter fat content. (½ mk)
- Jersey
Give four reasons for identification in cattle management.(2mks)
- Easy to select animal for bleeding.
- Facilitates treatment of sick animals.
- Helps to cull poor performing animals.
- Helps in recording.
- Helps to detect loss or theft.
State for bacterial diseases affecting cattle. (2mks)
- Anthrax
- Black quarter
- Brucellosis
- Foot rot
- Mastitis
Give four harmful effects of parasites in livestock. (2mks)
- Causes anemia
- Deprive animal of food
- Injury/ damage caused to tissue.
- Transmit diseases
- Causes irritation
- Causes obstruction of internal organs.
Highlight four functions of vitamins in animals (2mks)
- Promote growth
- Help in blood clotting
- Help in bone formation
- Muscular activity
- Prevent diseases in animals
- Act as organic catalysts
State the gestation period of (1mk)
1. Ewe – 150 days
2. Sow – 113-117 days
State three methods of selection in breeding (1 ½mks)
- Mass selection
- Progeny testing
- Contemporary comparison.
Give four qualities of a good vaccine. (2mks)
- Should be good as natural immunity
- Long keeping life
- Easy to administer to the animal
- Have no side effects when inoculated
- Should be compatible with other vaccines
- A single dose gives lifelong immunity
State any four signs that a sow would show before farrowing. (2mks)
- Restlessness
- Enlargement of vulva
- Slackening of pelvic muscles
- Loss of appetite
- Enlarged udder
- Sow builds a nest
What is cropping in aquaculture? (½mk)
- Selective removal of marketable sized fish from fish pond.
State any four uses of crush (2mks)
- Spraying
- Identification
- Vaccination
- Milking
- AI
- Dehorning etc
Differentiate between flushing and steaming as used in livestock production. (1mk)
- Flushing is the practice of giving an animal high nutritive feed around serving time while steaming up is provision of extra high nutritive feed before parturition.
State four conditions necessary for incubation (2mks)
- Temperature – 37°c – 39°c
- Fresh air/ well venerated
- Relative humidity 60 %
- Egg turning
List three methods of extracting honey from the honey combs (1 ½ marks)
- Heat method
- Crushing and straining method
- Use of centrifugal extractor
List four reasons for docking in sheep. (2mks)
- To facilitate easy mating during bleeding
- For even fat distribution in the body.
- To reduce blowfly infestation
- To avoid soiling of wool.
State four advantages of keeping animals health (2mks)
- For longer productive health
- Enables animals to breed regularly
- Control spread of diseases
- Healthy animals are high yielding
- To produce high quality
Mention four disadvantages of natural mating as a method of breeding in dairy cattle (2mks)
- Causes in breeding if the bull is not controlled.
- It is economical to keep the bull.
- There is risk of transmission of breeding diseases.
- A bull may cause physical injury to a cow.
- Only a few cows can be mated by a bull at a given time.
Name any four breeds of dairy goats (2mks)
- Saanen
- Toggen burg
- Aglo-nubian
- Jamnapari
- British Alpine
- German Alpine

SECTION B (20 MARKS)

1. Name the activity illustrated above (1mk)
  - Egg candling
2. Give four abnormalities in the eggs that can be detected during the above activity (4mks)
  - Tiny/hair cracks on the egg shells
  - Presence of double yolks
  - Blood spot in an egg
  - Excessively larger air space.
3. State one function of the carton box in the activity illustrated above (1mk)
  - Cartoon box provides a dark environment for clear visibility through the egg
1. Name the parts labeled B and D (2mks)
  - B-Trigger
  - D-nozzle
2. State one main maintenance practice that should be carried out on the knapsack sprayer after every use (1mk)
  - Wash thoroughly and after use.
  - Unblock nozzle that are blocked
3. State the function of the part labeled E and F (2mks)
  - E - For pumping pressure into the knapsack sprayer.
  - F- Aid in carrying the sprayer when spraying.
1. Name the parts labelled A,B and D (3mks)
  - A- Foot bath
  - B - Dip tank/ plunge tank
  - D - Dispersal yard/drying yard.
2. Give one reason why cattle are held for some time in part labeled C (1mk)
  - minimize wastage of accaricides
  - Minimize pasture contamination.
3. State two maintenance practices carried out on part D (2mks)
  - Repair cracked walls and floors
  - Replace expired dip wash
  - Maintain level of dip wash
  - Maintain the concentration of dip wash
  - Clean dipping tank regularly
1. Name of the disease (1 mk)
  - Milk fever
2. State two other causes of the disease mentioned above (2mks)
  - Deficiency of calcium in the blood of a lactating cow
  - High milk yielding cow where calcium replenishment is not done.

SECTION C (40 MARKS)

1. Describe five factors to consider when selecting a breeding stock. (10mks)
  - Production level
  - Age
  - Health
  - Mothering ability
  - Temperament
  - Adaptability
  - Body conformation
  - Prolificacy
  - Physical defects
2. Describe five control measures of diseases in livestock and give an example of a disease controlled by the measure.
  (10 mks)
  - Prophylactic drugs e.g. coccidiosis.
  - Quarantine- foot and mouth, anthrax etc.
  - Isolation – calf scours
  - Culling/mass slaughter- foot and mouth, anthrax
  - Vaccination- anthrax, black quarter
  - Control of vectors- nagana, east coast fever
  - Use of healthy breeding stock- brucellosis
  - Proper nutrition – milk fever
  - Proper housing- pneumonia
  - Proper milking techniques- mastitis
  - Drenching – ascariasis
  - Spraying – east coast fever
  - Keeping resistant animals- Zebus- East Coast Fever.
  - Hoof trimming – foot rot.
1. Discuss mastitis disease under the following
  1. Causal organism. (1mk)
    - streptococcus spp or staphylococcus spp.
  2. Symptoms (3mks)
    - Blood/ pus in milk
    - Swollen or inflamated udder
    - Rise in body temperature
    - Drop in milk production
    - Pain in the udder or treats
    - Milk has a salty taste
    - Fine clots in milk
  3. Causes of the disease (4mks)
    - Incomplete milking
    - Low standards of hygiene
    - Injury to the udder/teats
    - Genetic factors
    - Stress
  4. Control measures (2mks)
    - Use of correct milking technique
    - Use of a strip cup to detect infected cows
    - Practice proper hygiene
    - Vaccination
    - Use of dry cow therapy
    - Treat with antibiotics
    - Cull susceptible cows.
2. various factors that should be considered when siting farm structures (10mks)
  - Accessibility to the structure
  - Type of soil
  - Relationship with existing structures
  - Government policy on building and construction
  - Topography of the land or drainage
  - Space for future expansion
  - Position/direction of the sun/orientation
  - Availability of social amenities
  - Drainage of the area
  - Farmers tastes and preferences
1. five factors considered when buying farm tools equipment to use (5mks)
  - Purpose /use of the equipment
  - Cost of the tool/equipment
  - Quality of the tool/ equipment whether high or low
  - Skill required in handling the tool/equipment i.e. whether the skill is there or not
  - Capital availability/financial strength /purchasing power of the buyer
  - The nature of work need to be done
2. five predisposing factors of livestock diseases (5mks)
  - sex of the animals
  - age of the animal
  - Colour of the animal
  - Breed of the animal
  - Poor sanitation/environment
3. factors a farmer should consider when selecting building materials for farm structures. (10mks)
  - Durability
  - Cost of the material
  - Maintenance required
  - Design of the building
  - Prevailing weather condition
  - Strength of the material
  - Availability of the materials
  - Types of structure/ use of structure
  - Skills required in using the materials
  - Beauty or attractiveness of the material