|Better Farming Series 14 - Farming with Animal Power (FAO - INADES, 1977, 57 p.)|
|Income from animal power|
|What animal power costs|
Gambara gives a feed supplement to his working oxen (see page 27). Each animal gets 2 kilogrammes of sorghum on days when it works.
Instead of giving the sorghum to the animals Gambara could have sold the sorghum at, say, 12 francs a kilogramme.
Gambara should know how much money he could have got for this food.
Each working day the food for the two oxen costs him: 4 kilogrammes x 12 francs = 48 francs.
The oxen work 100 days a year.
Their food costs him: 48 francs x 100 = 4 800 francs.