The dynamics comparisons of nutritional quality of different Bothriochloa ischaemum populations in Shanxi

In the present study, the nutritional values of nine Bothriochloa ischaemum populations from Shanxi were evaluated by conventional methods to explore the dynamics changes of nutritional quality during growth stage. The results showed that the contents of crude protein(CP), EE declined with plants growth and development, whereas the contents of NDF, ADF and ADL increased. In the same growth stage, there were significant differences (P0.05) in the contents of CP, EE, NDF, ADF and ADL among the different populations. In the jointing stage, plants of Xiangfen population had the highest contents of CP, EE and the lowest contents of NDF, ADF and ADL indicating its highest nutritional value at this stage. In the booting stage, plants of Qinyuan population had the highest contents of CP, EE suggesting its the highest nutritional value at this stage. In the heading, flowering and mature stage, the comprehensive performance of nutritional contents of plants from Taigu population was best, followed by the Qinyuan and Yuanping populations.