Study the photograph of a dairy rearing system and the diagram of an artificial incubator, and answer the questions that follow.

18. The photograph below shows a dairy rearing system. Study it and answer the following questions.

a) Identify the system.
The system shown is a tie-stall or stanchion system.

b) List two building materials used in construction of the structure.

• Wood
• Concrete

c) State three reasons for carrying out the practice.

• To obtain milk for human consumption and processing.
• To generate income for the farmer.
• To produce dairy products such as cheese and yogurt.

19. Study the diagram of an artificial incubator below and answer questions that follow.

a) Identify the parts labeled P and Q.

• P: Ventilation outlet (or air vent)
• Q: Water tray

b) State the function of the part labeled Q.
The function of the water tray (Q) is to provide humidity inside the incubator, which is essential for proper embryo development and successful hatching.

c) Name four parts found in the structure.

• Egg trays/racks
• Heating element
• Fan
• Thermometer