(a) Name four breeds of chicken used for commercial egg production. 14 marks] (b) State two functions of each of the following components in the diet of far...

Assessment: WAEC SSCE - Agricultural Science - 2010 (Essay) Subject: Agricultural Science

Question 1 Report

 (a) Name four breeds of chicken used for commercial egg production. 14 marks] 
(b) State two functions of each of the following components in the diet of farm animals: (i) water (ii) minerals (ii) antibiotics (iv) protein [8 marks] 
(c) Enumerate four advantages of the intensive system of rearing ruminants. [4 marks]

Answer Details

(a) Four breeds of chicken used for commercial egg production

  1. White Leghorn
  2. Rhode Island Red
  3. Black Australorp
  4. New Hampshire (Isa Brown/other layer strains are also acceptable)

(b) Two functions of each dietary component

ComponentTwo functions
(i) WaterActs as a solvent for digestion, absorption and transport of nutrients; regulates body temperature and removes waste from the body
(ii) MineralsBuild strong bones, teeth and egg shell (calcium, phosphorus); form part of body fluids, blood and enzymes and aid metabolic processes
(iii) AntibioticsControl/prevent disease-causing organisms in the animal; promote faster growth and improve feed efficiency
(iv) ProteinBuilds body tissues for growth and repair of worn-out tissues; forms part of enzymes, hormones, milk and eggs

(c) Four advantages of the intensive system of rearing ruminants

  1. Many animals can be reared in a small space.
  2. The animals are closely supervised, so diseases and pests are easily detected and controlled.
  3. Feeding is controlled and balanced, giving faster growth and higher productivity.
  4. Records are easy to keep and the animals are protected from theft, predators and bad weather.
Read lesson note on Livestock Management (JAMB)
Read lesson note on Animal Nutrition (JAMB)
View Answer

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