Comparative Analysis Of Chemical Components And Nutritional Value Of Five Psammophytes And Study On Feeding Use

The shrub has a wide range of growth in our country,has played an extremely important role in ecological environment management,is a precious biomass resource.At present,there is a huge demand for coarse feed,and the shortage of feed material is the key factor that restricts the development of livestock husbandry in our country.There are a large number of sand shrubs such as Caragana korshinskii,sand willow and poplar Hedyotis growing in Usain Banner.The exploitation and utilization of roughaag can not only bring great economic benefits but also realize a virtuous cycle of environmental protection and economic growth.(1)At present,there are a lot of roughage products produced by Artemisia or dosica and artemisia ordosica on the market.By referring to the nutritional components of artemisia ordosica and artemisia ordosica that have been proved to be able to be fed,the nutritional value of caragana korshinskii,willow and poplar wood can meet the feeding standards.In this study,the nutritional value of psammophyllum caragana,Psammophyllum caragana,Psammophyllum japonicum and Psammo phyllum japonicum were evaluated comprehensively from the conventional nutritional indexes,CNCPS components and NRC components during the six months from September,2022 to February,2023(the state allowed stubble period).The nutritional indexes of psandophytes such as CP and EE in September and October are higher than those in other months.Therefore,it is suggested to finish cropping in September and October as far as possible.(2)Since the nutritional contents of Caragana Korshinskii,salix korshinskii and poplar firewood fluctuated,in order to explore the internal factors affecting the fluctuation of nutritional value of shrubs,this study conducted a correlation study between the conventional nutritional indexes,CNCPS components and NRC components and the lignin,cellulose and hemicellulose contents respectively at the same period.Through investigation,it can be found that the content of the three main elements has a certain negative correlation with the nutritional value of the three psandbush.When the content of the three main elements is too high,the lignification degree of psandbush will increase,which will affect the content changes of nutrient components such as CP,EE,NDF and ADF,and also lead to the reduction of the absorption and utilization rate of roughag of cattle and sheep.Therefore,it is suggested that for the psammophyllum collected after September and October,the factory should add "silage" process into the process of processing it into feed to reduce the lignification degree of caragana korshinskii,sand willow and poplar firewood,and improve the absorption and utilization rate of roughaag for livestock.(3)The comprehensive nutritional value of Caragana koragana was higher than that of willow and poplar.The contents of various nutritional components of the three psammophytes were close to or even better than that of artemisia ordosica,while the nutritional value of weeds was slightly lower than that of artemisia ordosica and artemisia ordosica.According to the nutritional data,the feasible roughage formula suitable for growing sheep,growing goats and beef cattle was formulated with caragana korshinskii,sand willow and poplar wood as main raw materials.