Comparison of chemical composition, starch gelatinization and in vitro ruminal fermentation characteristics of different types of maize grains
Three types of maize grains from high yield maize. (HYM), high protein maize (HPM) and high oil maize (HOM) were used in the present study to compare their chemical compositions, starch gelatinization and in vitro ruminal fermentation characteristics based on chemical analysis and the in vitro gas production method. The results showed that the type of maize had significant effect (P＜0.05) on the contents of CP, ether extract and starch, starch gelatinization, 48-h gas production, rumen fermentation rate, potential gas production, 12-h and 24-h in vitro ruminal digestibilities of dry matter and starch. Of three types of maize grains, HYM had better merits than HOM and HPM in most energy traits, though almost all in vitro ruminal fermentation parameters including pH, NH3-N, VFA concentration and molar percentages of individual VFA were not significantly different (P＞0.05) among maize types. It was concluded that compared with other two types of maize grains, high yield maize hybrid showed a great potential to be used as energy feed source of ruminant animals.
maize type chemical composition starch gelatinization in vitro ruminal fermentation gas production
F.Q.Qiao H.Yao L.Lu X.X.Wang Q.X.Meng
College of Animal Science and Technology, Beef Cattle Research Centre, China Agriculture University Department of Animal Science, Beijing University of Agriculture Beijing 102206, P.R.China College of Animal Science and Technology, Beef Cattle Research Centre, China Agriculture University
国际会议
The 7tb International Symposium on the Nutrition of Herbivores(ISNH-7)(第七届国际草食动物营养研讨会)
北京
英文
712-717
2007-09-16（万方平台首次上网日期，不代表论文的发表时间）