WAEC Agriculture 2011 Paper

Concept:Feed Conversion Ratio (FCR) measures the feed consumed per unit of live weight gain.Explanation:The sheep's weight increased from $25\,\text{kg}$ to $45\,\text{kg}$.So, total weight gain $= 45\,\text{kg} - 25\,\text{kg} = 20\,\text{kg}$.Total feed consumed during this period was $60\,\text{kg}$.FCR is calculated as feed consumed divided by weight gain.Thus, FCR $= \frac{60\,\text{kg}}{20\,\text{kg}} = 3$.Expressed as a ratio, this gives $3:1$.Answer:The feed conversion ratio is $3:1$, which corresponds to option C.