Feed conversion ratio calculation and interpretation

The feed conversion ratio formula

FCR = Cumulative feed consumed ÷ Live weight produced.

Live weight produced accounts for sold animals, free exits and the weight remaining on farm, estimated from the last weighing and the strain guide.

An automatic, transparent calculation

FermaTrack cumulates feed consumed from weekly inventories (initial stock + receipts − exits − final stock) and crosses this data with weighings.

FCR is shown per flock in statistics and the technico-economic report, with the formula used explicitly stated.

Interpreting FCR

A low FCR reflects good feed efficiency: less feed to produce one kilo of live weight. A high FCR can signal waste, mortality or a growth deviation.

Comparing FCR between flocks at the same age helps identify underperforming flocks.

Acting on FCR

FCR depends on feed quality, ambient conditions, mortality and growth. FermaTrack provides the data to understand and correct deviations.