FCR Bull Vs Rabbit 

Based on the results of scientific studies, the feed intake to meat gain ratio in domestic animals has been established: for a rabbit the ratio is approximately 3.4 kg of feed per 1 kg of meat and for a cow it is 8.8 kg of feed per 1 kg of meat(Gidenne et al., 2017; Wilkinson, 2011).

Thus, to gain 100kg of weight:

- A rabbit needs to eat 340kg of feed (3.4kg/kg * 100kg).

- A cow needs to eat 880 kg of feed (8.8 kg/kg * 100 kg).

If the rabbit family eats 880 kg of feed, their weight will increase to about 258.82 kg (880 kg / 3.4 kg/kg).

To estimate the efficiency of feed utilisation, we calculate the ratio of the amount of weight gain to the amount of feed consumed:

- Rabbit efficiency: 1 / 3.4 ≈ 0.2941 (rounded to four decimal places).

- Cow efficiency: 1/8.8 ≈ 0.1136 (rounded to four decimal places).

Thus, the rabbit's efficiency is approximately 0.2941, whereas the cow's efficiency is approximately 0.1136.

Comparing the efficiency of a rabbit and a cow, we get the ratio:

Rabbit Efficiency / Cow Efficiency ≈ 0.2941 / 0.1136 ≈ 2.588.

Hence, the rabbit's efficiency is 2.588 times higher than the cow's efficiency, which indicates that the rabbit is more efficient in digesting feed and gaining weight compared to the cow.