Effect of nutrient quality in different parts,height treatments,and silage time of Cenchrus fungigraminus in Hetao area
In order to explore the nutritional quality of Cenchrus fungigraminus as a high-quality forage in Hetao area and develop its potential feeding value.In the experiment,the contents of nutrients in the samewhole plant,leaves,stems with a height 1.0 m and whole plants with plant with a height of 1.3 to 2.5 m,and stubble height of 0 to 20 cm were determined.The silage test was carried out on the whole plant with 1.6 m height to determine the content of conventional nutrients,pH value,NH3-N concentration and soluble sugar(WSC)content after silage.The results showed that the feeding value of each part was in the order of leaves＞whole plant＞stem.The nutrient content in Cenchrus fungigraminus with cutting height of 1.3 to 1.6 m was higher.When the stubble height was 10 to 15 cm,the nutritional quality of the next crop was better.During silage,the contents of crude protein(CP)and crude ash(CA)increased gradually,while the contents of dry matter(DM),neutral detergent fiber(NDF),soluble sugar(WSC)and pH value decreased gradually with the extension of silage time.The concentration of NH3-N was the highest when silage lasted for 30 days.The research revealed that the feeding value of the leaves was better than the stems,and the stubble height and cutting height had significant effects on the nutritional quality and yield of the Cenchrus fungigraminus.The nutritional level of the Cenchrus fungigraminus can be improved through silage fermentation.
国家科技期刊平台
NSTL
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