[Objective] The influence of mixed silage of *** and *** at initial flowering stage on degradation was studied to provide theoretical basis for production practice.[Method] Using *** and *** at initial flowering stage...
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[Objective] The influence of mixed silage of *** and *** at initial flowering stage on degradation was studied to provide theoretical basis for production practice.[Method] Using *** and *** at initial flowering stage as materials,the changes of in vitro degradation rate,gas production,pH value,ammoniacal nitrogen（NH3-N）and volatile fatty acid（VFA）content in degradation solution were analyzed by means of artificial rumen technique,and the effect of mixed silage of *** and *** at initial flowering stage on degradation was studied in order to find out suitable mixed silage ratio of *** and ***.[Result] Compared with single ***,NH3-N content in degradation solution was very significantly decreased in the mixed silage of *** and ***,and there was a reduction in gas production,while the content of acetic acid,propionic acid and butyric acid increased significantly;for the treatment of 70% *** and 30% ***,NH3-N content（22.93 mmol/L）and gas production（40.50 ml）was lowest,while degradation rate（32.27%）,acetic acid（5.48 mmol/L）,propionic acid（2.08 mmol/L）,butyric acid（2.52 mmol/L）and their total content（10.08 mmol/L）were highest,so its degradation effect was the best.[Conclusion] The mixed silage of *** and *** at initial flowering stage could improve the utilization efficiency of protein and carbohydrate in *** and the treatment of 70% *** and 30% *** had the best degradation effect.
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