Study on Nutrient Components and Rumen Degradability Dynamics of Six Hybrid Pennisetum

The chemical composition and rumen degradability of Six Pennisetum Lines were studied,the results showed that the dry matter and neutral detergent fiber effective degradabilities(ED)of Hybrid Pennisetum and Guangxi Pennisetum were higher,the dry matter ED of Fujian Pennisetum and neutral detergent fiber ED of Taiwan Pennisetum was the lowest.The dry matter potential degradation extent of seven Hybrid Pennisetums has a positive correlation with crude protein and a negative correlation with neutral detergent fiber.The dry matter potential degradation extent of six Hybrid Pennisetums has positive correlations with the potential degradation extent ofcrude protein and neutral detergent fiber,and was more relavant with the potential degradation of neutral detergent fiber,which implicated that it was more efficient by improving the degradation of neutral detergent fiber potential to use Hybrid Pennisetum Lines.