(a) (i) Define the term culling as used in livestock production. (ii) State two reasons why culling is practiced in cattle production. (b) Mention one major...

(a)(i) Meaning of culling

Culling is the deliberate removal or elimination of unproductive, old, sick, deformed or otherwise undesirable animals from a herd or flock, so that only healthy and productive animals are kept.

(ii) Two reasons why culling is practised in cattle production

• To remove poor producers, old and barren animals so that only economic, high-yielding cattle are kept.
• To control the spread of disease and to improve the overall quality and productivity of the herd.

(b) One major function each of the enzymes during digestion in rabbits

• Ptyalin (salivary amylase): digests (breaks down) starch into maltose in the mouth.
• Rennin: coagulates (curdles) the soluble milk protein caseinogen into casein in the stomach.
• Pepsin: digests protein into peptones and polypeptides in the stomach.