The diagrams below represent two modern equipment used in commercial animal production. Use them to answer question (a), (b) and (c). (a) ldentify the equip...

(a) Identification of the equipment

• C: Incubator
• D: Milking machine

(b) Parts labelled I to VII

• I: Thermometer
• II: Egg
• III: Egg tray
• IV: Water
• V: Source of heat
• VI: Teat cup
• VII: Source of power / vacuum pump

(c) Precautions when using each equipment

C: Incubator

1. Set only clean, fresh, fertile eggs that have not been stored for more than two weeks.
2. Do not wash the eggs with water, as this increases the porosity of the shell and raises the respiration of the embryo.
3. Arrange the eggs with the air-space (broad) end up and set uniformly sized eggs, keeping the incubator away from walls for proper ventilation while constantly monitoring the temperature and relative humidity.

D: Milking machine

1. Clean and scrub the udder and teats thoroughly with slightly warm water before milking, and test the foremilk with a test cup.
2. Handle the dairy animal gently and apply only light pressure, avoiding noise or distraction such as smoking or drinking during milking.
3. Introduce some feed and provide light, soft music to induce the animal to let down its milk, while the milker concentrates fully on the task.