Estimation for Metabolizability of Energy and Amino Acids of Wheat Distillers Dried Grains with Solubles in Huainan Spotted-Yellow Chicks

XIA Lunzhi WU Dong QIAN Kun ZHOU Fen WANG Li(Institute of Animal Husbandry and Veterinary Medicine,Anhui Academy of Agriculture Sciences,Hefei 230031,China)

wheat DDGS;Huainan spotted-yellow chick;amino acid;general energy;metabolizability

To investigate the metabolizability of energy and amino acids of wheat distillers dried grains with solubles(DDGS) in Huainan spotted-yellow chicks(HSY chicks),24 roosters with similar body weight were randomly allocated into 2 groups with 6 replicates per group and 2 chicks per replicate,and the chicks were used for collecting metabolic excreta of experimental diets and endogenous losses for 2 times,respectively.The results from the cross formula showed as follows: 1) average apparent metabolizability and true metabolizability of main amino acids of wheat DDGS in HSY chicks were 69.76% and 74.91%,respectively;2) apparent metabolizability and true metabolizability of general energy of wheat DDGS in HSY chicks were 46.87% and 47.58%,respectively;apparent metabolizable energy(AME) and true metabolizable energy(TME) were 9.09 and 9.24 MJ/kg,respectively;AME and TME corrected for nitrogen(AMEn and TMEn) were 9.13 and 9.28 MJ/kg,respectively;correlation coefficients of apparent metabolizability and true metabolizability of main amino acids and general energy of wheat DDGS were each more than 0.92.These results indicate that the values of true metabolizabilitie of main amino acids and general energy of wheat DDGS in HSY chicks are little lower than those of corn DDGS,and the values of apparent metabolizability are similar with those from the other study results.The true metabolizability is affected more than apparent metabolizability by crude fiber level of the determined feedstuff.Apparent metabolizability and true metabolizability of main amino acids and general energy of wheat DDGS in HSY chicks have a highly positive correlation.