WAEC Agricultural Science 2013 Theory question 107

Theory question 107

Livestock Management

(a) Give three reasons why fish farming is important.
(b) State three factors that influence the choice of a suitable site for a fish pond.
(c) Mention two sources of each of the following feed nutrients: (i) water; (ii) proteins; (iii) carbohydrates; (iv) vitamins.
(d) Mention two ways by which roundworm infestation is of economic importance in livestock production.

Show the model answer
Model answer

(a) Any three: cheap source of animal protein; income and employment; uses land unsuitable for crops; raw materials (fish meal, oil); foreign exchange; recreation.
(b) Any three: reliable water supply; soil that holds water (clay/loam); gentle topography; freedom from flooding and pollution; accessibility and security; nearness to market.
(c)(i) Water: drinking water, succulent forage, metabolic water. (ii) Proteins: fish meal, blood meal, groundnut cake, soyabean meal, legumes. (iii) Carbohydrates: maize, sorghum, cassava, rice bran. (iv) Vitamins: green forage, fish liver oil, vitamin premix, fruits.
(d) Any two: reduce growth and weight gain; cause anaemia, diarrhoea and weakness; block the intestine and may kill animals; increase cost of treatment; reduce milk/meat production; condemnation of organs.

Explanation

Two sources for each of the four nutrients.