Work out pig feed conversion instantly with clear inputs, formula shown and shareable results.
Feed conversion ratio is feed consumed divided by live weight gain — the single most important efficiency measure in pig production, since feed is 65-75% of the cost. Modern genetics on a well-balanced diet achieve 2.4-2.8 from 25 kg to slaughter; above 3.2 suggests diet, health or wastage problems.
Feed conversion
FCR = feed consumed / (finish weight - start weight)
Growth rate
ADG (g/day) = gain x 1000 / days on feed
Maintenance requirement rises with body weight and later gain contains more fat, which costs more energy per kilogram than lean. Extending finishing weight always worsens FCR.
Yes — FCR measured from feed delivered includes wastage, which can be 5-10% with badly adjusted feeders. That is exactly why the measured figure is the one that matters commercially.