Experiments were conducted to investigate the effect of gender of 26-wk-old Nick Pink on apparent metabolizable energy(AME) and protein metabolic rate of eight feedstuffs.Protein and energy of basal diet were substituted separately by dried sweet potatoes,rice bran,pearl millet and brown rice as energy supplements while sunflowers meal,sorghum-distiller's grains,corn gluten meal and distillers dried grains with solubles(DDGS) as protein supplements.The results showed that the difference of AME between roost...