Digestible and metabolizable energy in corn grains from different origins for growing pigs

초록

An experiment was conducted to determine the digestible energy (DE) and metabolizable energy (ME) concentrations in nine sources of corn grains fed to growing pigs and to compare the energy values among their countries of origin. A total of nine sources of corn grains including five sources of yellow corn from the United States (USY), two sources of yellow corn from South Africa (SAY), and two sources of white corn from South Africa (SAW) were used. Nine barrows with an initial body weight of 37.1 +/- 8.6kg were allotted to a 9x9 Latin square design with nine diets and nine periods. The DE concentration in SAY (3347kcal/kg) was greater (P<0.001) than in USY (3269kcal/kg), but was less (P<0.001) than in SAW (3436kcal/kg) on an as-fed basis. Similarly, the ME concentration in SAY (3291kcal/kg) was greater (P<0.001) than in USY (3209kcal/kg), but was less (P<0.001) than in SAW (3386kcal/kg). In conclusion, the DE and ME concentrations in nine sources of corn grains are different among their countries of origin.

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