Theory question 104
Farm Animals and Their Importance(a) State four ways in which livestock is important. (b)(i) Mention six organs associated with the digestive system in rabbit. (ii) State two functions of the alimentary canal in livestock. (c)(i) State four functions of the liver in farm animals. (ii) Mention two parasites which could be found in the liver of cattle. (d) State two differences between the digestive systems of a goat and a rabbit.
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(a) Any four: food (meat, milk, eggs); income and employment; raw materials (hides, wool); manure; draught power/transport; foreign exchange; social and religious uses
(b)(i) Any six: mouth/teeth; oesophagus; stomach; small intestine; caecum; colon; rectum; anus; liver; pancreas; gall bladder
(ii) Any two: ingestion of food; digestion of food; absorption of nutrients; egestion of undigested waste
(c)(i) Any four: secretes bile; stores glycogen and controls blood sugar; deamination of excess amino acids/forms urea; detoxifies poisons and drugs; stores vitamins (A, D) and iron; makes blood proteins; breaks down old red blood cells; produces heat
(ii) Any two: liver fluke (Fasciola); hydatid cyst (tapeworm larva); roundworm larvae
(d) Any two (goat vs rabbit): four-chambered stomach vs simple stomach; chews the cud vs practises coprophagy; fibre digested in rumen vs fibre digested in large caecum; no upper incisors (dental pad) vs has upper incisors
Compare the same feature for both animals in (d).