This question was fairly attempted by the candidates.  In 8(a), majority of the candidates could list four methods of identification in cattle production.  Also, in 8(b-c), most of the candidates could neither mention three malnutrition-related diseases in farm animals nor state five effects of aquatic weeds in a fish pond.  However, in 8(d), majority of the candidates could state four fishery regulations.

The expected answers include:
8(b)     Malnutrition-related diseases in farm animals
                -              Milk fever/Hypocalcaemia

• Crazy chick disease – Grass tetany
• Rickets
• Ketosis/Acetonaemia
• Osteomalacia
• Perosis/Slipped tendon
• Baby pig anaemia
• Bloat
• Acidosis
• Hypomagnesaemia
• Pregnancy toxemia

(c)           Effects of aquatic weeds in a fish pond
                -              At a minimal level, the weeds could serve as food to the fish.
                -              Weeds could harbor pathogens, pests and predators.
-              Weeds cause loss of water from the pond by evaporation through transpiration process.

• Weeds cause obstruction to light penetration into the water.
• They limit air penetration in the water
• They cause gradual reduction in pond size and eventual drying
• Weeds reduce evaporation
• Competes with fish for nutrients and dissolved oxygen
• Obstruct easy harvesting of fish