Time: 60–90 min
Instructions: Answer FULLY (not one word)
SECTION A: CONCEPTS (DEEP UNDERSTANDING)
1.
Explain why domestication occurred and describe the role of selection in this process.
2.
Differentiate clearly between:
• Taming
• Domestication
AND explain why this difference is important in livestock production.
3.
Explain Bonsma’s statement:
“Man is the most important environmental factor”
Use examples.
4.
Explain how nutrition is linked to soil fertility and rainfall, and how this affects livestock production.
SECTION B: ADAPTATION PHYSIOLOGY (CORE)
5.
Define:
• Effective Ambient Temperature (EAT)
• Thermoneutral Zone (TNZ)
AND explain their importance in livestock production.
6.
Explain what happens:
• Above UCT
• Below LCT
AND describe the physiological responses of animals.
7.
Why are high-producing animals more susceptible to heat stress?
8.
List and explain the 6 adaptation mechanisms animals use to cope with heat.
, SECTION C: BREEDS & IDENTIFICATION
9.
You see a cow with:
• Large hump
• Loose skin
• Drooping ears
Identify:
• Breed type
• Classification
• Adaptation advantage
10.
A sheep has:
• Black head
• White body
• No wool
Identify:
• Breed
• Production type
11.
Compare:
• Bos taurus
• Bos indicus
In terms of heat tolerance and production
SECTION D: PROVINCES (APPLICATION – VERY
IMPORTANT)
12.
A farmer in Northern Cape wants to start dairy farming with Holstein cattle.
Evaluate:
• Is this suitable?
• Explain WHY using environment + adaptation
13.
A region has:
• High rainfall
• High humidity
• High parasite load
Which breeds are suitable and why?