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Table 9 Prediction equations of energy apparent total tract digestibility from in vitro organic matter digestibility [96]

From: Alternative prediction methods of protein and energy evaluation of pig feeds

Noa Equationb n R 2
1 ATTDIN VITRO E = 4.8 + 0.881 × DIN VITRO OM 33 0.69
2 ATTDIN VITRO E = –14.0 + 1.106 × DIN VITRO OM 31 0.94
3 ATTDIN VITRO E = –14.7 + 1.117 × DIN VITRO OM 28 0.96
  1. aEquation: No. 1 - estimated for all feedstuffs; No. 2 – estimated after exclusion of values for raw potato starch and meat and bone meal; No. 3 - estimated after exclusion of values for raw potato starch, meat and bone meal, potato protein concentrate, sugar beet pulp and dried whey;
  2. bATTDIN VITRO E – Apparent total tract digestibility of energy predicted in vitro expressed in %; DIN VITRO OM – Digestibility of organic matter determined in vitro expressed in %
  3. R 2 - coefficient of determination;