14

Question 1

In rearing houses piglets are housed in goup pens, what is the optimum number of piglets?

Answer 1

• 10-12 Piglets per group

Question 2

What is the minimum required area for piglets?

Answer 2

• up to 10 kg = 0.15m²
• 10-20kg = 0.20m²
• 20-30kg = 0.30m²

Question 3

What is the minimum required area for fattening pigs?

Answer 3

• 30-50kg = 0.40m²
• 50-85kg = 0.55m²
• 85-110kg = 0.65m²
• 110+kg = 1.0m²

Question 3

What is the minimum required area for fattening pigs?

Answer 3

• 30-50kg = 0.40m²
• 50-85kg = 0.55m²
• 85-110kg = 0.65m²
• 110+kg = 1.0m²

Question 4

What is the purpose of ventilation?

Answer 4

• Supply oxygen rich air
• Remove gases, odours, dust and bacteria
• Remove the heat generated by the housed livestock
• Remove moisture from within the house

Question 5

Goals of ventilation?

Answer 5

1. Air exchange
2. Air distribution

Question 6

What are the factors tha influence the freshness of air within a house?

Answer 6

• The cubic air capacity
• The rate of air entry and exit

Question 7

What are the factors tha influence the freshness of air within a house?

Answer 7

• The cubic air capacity
• The rate of air entry and exit

Question 8

Name the types of ventilation?

Answer 8

• Natural
• Artificial/forced
  -Negative pressure
  -Positive pressure
  -Isobaric

Question 9

What are the two ways natural ventilation occurs?

Answer 9

• Stack effect = calm conditions
• Wind = air speed in excess of 3m/s

Can also be a combination of both