(a) State eight functions of water in livestock management (b) List eight essential mineral elements required in animal nutrition (c) State four functions of the mineral elements in the body of animals. 

(a) Describe four methods of harvesting fish. (b) Discuss briefly four fishery regulations. 

Explain eight roles of agricultural extension in the development of agriculture in Nigeria

(a) Explain the meaning of each of the following terms in relation to agricultural practices: (i) appreciation; (ii) depreciation: (iii) salvage value.

(b) A fiat tractor was purchased by a farmer in 1978 for N12,000.00. In 1987, the tractor was sold off for N3.000.00 when it was no longer economical to maintain it. Calculate the: (i) salvage value of the tractor; (ii) total depreciation; (iii) annual depreciation; (iv) appreciation.

The image above represents specimen A. Study it carefully and use it to answer Questions (a) - (d)

(a) List five advantages of using specimen A.

(b) State four maintenance activities that can be carried out daily on the specimen.

(c) State five maintenance practices that should be carried out periodically on the specimen.

(d) (i) What type of fuel is needed to operate specimen A ?
(ii) Does the specimen require a spark plug?