(i)

Brooder House is a heated enclosure/structure in which day-old chicks are kept.

OR

Brooder House is a heated enclosure to provide shelter for day old/young chicks

(ii)

Causes of cannibalism in poultry

1. Stress
2. Inadequate feed
3. Inadequate water
4. Dietary deficiency/unbalanced diet
5. Bright lighting
6. Injured birds
7. Overcrowding
8. Age/colour differences
9. Diseased birds
10. Abrupt changes in the environment/management practices
11. Excessive heat
12. Presence of parasite

(i)

Convection is the transfer of heat in a fluid through the rising of hot particles and the sinking of cooler (and less dense) particles.

(ii)

Why convection cannot take place in solids

1. Particles in a solid occupy fixed positions/do not move from a point to another
2. They only vibrate about a mean position
3. They are therefore incapable of carrying heat from one point to another