Analysis of feeding quality changes of aboveground parts of Astragalus membranaceus var.mongholicus(Bge.)Hsiao in different growth periods
YANG Feifei
LI Bingzhen
ZHAO Shuwen
HU Yun
ZHANG Qianqian
Abstract：The experiment was to study the growth pattern,nutritional quality,and forage value of the aboveground parts of Astragalus membranaceus var.mongholicus(Bge.)Hsiao at different growth period.The aboveground parts of Astragalus membranaceus var.mongholicus(Bge.)Hsiao were harvested starting from May 2023,with harvests conducted in the middle of each month for five consecutive months until sampling was completed in September.A near-infrared spectroscopy analyzer was used to measure the nutritional quality indicators in the samples.The results showed that May to July was the stem and leaf growth period and flowering period of Astragalus membranaceus var.mongholicus(Bge.)Hsiao,during which the aboveground parts grew relatively fast.While August to September was the period when the roots and rhizomes of Astragalus membranaceus var.mongholicus(Bge.)Hsiao,during which the aboveground parts grew relatively slowly.The crude protein(CP)content of the aboveground parts of Astragalus membranaceus var.mongholicus(Bge.)Hsiao in May and June was significantly higher than that in other months(P＜0.05).The crude fiber(CF)and crude fat(EE)contents were relatively high in July and August,and the increase of neutral detergent fiber(NDF)and acid detergent fiber(ADF)contents was the largest from June to July.The calcium(Ca)and dry matter(DM)contents in May were the highest and significantly higher than those in other months(P＜0.05).With the progress of the growth period,the in vitro dry matter digestibility(IVDMD)of the aboveground parts of Astragalus membranaceus var.mongholicus(Bge.)Hsiao first increased and then decreased,reaching its peak in June.The correlation analysis with climatic factors found that the duration of sunshine and relative humidity were the main factors affecting the forage value of the aboveground parts of Astragalus membranaceus var.mongholicus(Bge.)Hsiao.The study indicates that the contents of nutrients and the forage quality of the aboveground parts of Astragalus membranaceus var.mongholicus(Bge.)Hsiao are better in June and July.
Keywords：Astragalus membranaceus var.mongholicus(Bge.)Hsiaonon-medicinal partsfeeding qualitygrowing period
Publication Date：2025-02-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 109-113 )