Evaluation of feeding and medicinal value of wild and cultivated Apocynum apocynum leaves
This study aims to investigate the differences between the nutritional and medicinal components of wild and artificially cultivated Apocynum venetum leaves in different growth periods,as well as the changing law.Grey correlation analysis was used to comprehensively evaluate the medicinal and feeding value of wild and artificially cultivated Apocynum venetum leaves.The results indicated that during the growth period,the cultivated Apocynum venetum chinensis had the lowest crude ash content at 1.08％,and the highest crude protein and acacetin content,reaching 19.57％and 2.14 mg/g,respectively.The cultivated Poacynum hendersonii bracteata had the highest digestible dry matter at 72.44％,with the highest contents of isoquercitrin and astragalin,at 2.32 mg/g and 0.23 mg/g,respectively,and the lowest acid detergent fiber content at 21.12％.For the wild Poacynum hendersonii bracteata,the content of chlorogenic acid and rutin was the highest,with 7.19 mg/g and 3.73 mg/g,respectively.In the early flowering stage,the wild Poacynum hendersonii bracteata had the lowest crude fat content at 3.05％,and the highest astragalin content at 0.23 mg/g.The cultivated Poacynum hendersonii bracteata had the lowest digestible dry matter and relative feeding value,at 69.25％and 217.82,respectively.During the pod-setting period,the wild Poacynum hendersonii bracteata had the highest content of apigenin-7-glucoside,at 6.16 mg/g.The cultivated Poacynum hendersonii bracteata had the highest crude fat content,dry matter intake,and relative feeding value,at 4.21％,5.15％,and 276.31,respectively,and the lowest neutral detergent fiber content at 23.31％.The study indicates that in the growing period of artificial cultivation of Apocynum venetum chinensis has excellent nutritional and medicinal value,can be used as herbal feed,has good potential for development and utilisation.
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