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Table 4 Prediction equations of energy digestibility and energy values for pigs from values determined for rats

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

Equationsa Samples type n R 2 Reference
DEPIG = –0.702 + 1.183 × DERAT Diets 16 0.940 [29]
ATTDPIG E = –15.48 + 1.1615 × ATTDRAT E Cereals 5 0.992 [31]
DEPIG = –4.489 + 1.2532 × DERAT Cereals 5 0.996 [31]
MEPIG = –5.176 + 1.3015 × MERAT Cereals 5 0.995 [31]
ATTDPIG E = 0.211 + 0.766 × ATTDRATE Feedstuffs 138 0.81 [32]
ATTDPIG E = 0.104 + 0.867 × ATTDRAT E Cereals 56 0.93 [32]
ATTDPIG E = 45.261 + 0.00549 × ATTDRAT E Barley 18 0.971 [45]
  1. aDEPIG and DERAT: Digestible energy for pigs and rats expressed in MJ per kg dry matter, respectively; ATTDPIG E and ATTDRAT E: Apparent total tract digestibility of energy determined in pigs and rats expressed in %; R 2 – coefficient of determination