几种南方非常规饲料作物的营养成分及氨基酸组成

Study of nutrient components and amino acid formation in several southern Chinese unconventional roughage sources

利用饲料分析技术及氨基酸分析仪对桑(Morus alba)、苎麻(Boehmeria nivea)及葛藤(Pueraria lobata)几种南方非常规饲料作物中的常规营养成分及氨基酸组成进行了分析。结果发现,1)桑、苎麻及葛藤中的蛋白质含量较高,尤其是苎麻,蛋白质含量高达22.38%,但同时其纤维含量也较高;2)葛藤的总能值相对较高,达17.17 MJ·kg^(-1);3)桑、苎麻及葛藤中的氨基酸含量丰富,尤其是植物性第一限制性氨基酸——赖氨酸的含量较高,为0.65%~0.89%,且总必需氨基酸的含量为5.10%~7.40%。因此,桑、苎麻及葛藤可以作为南方的优质牧草资源进行开发利用。

In the present study, we analysed the nutrient components and amino acid formation in mulberry, ramie, and kudzu by using feed analysis technology and amino acid analysis. The results showed that： 1） the protein content of mulberry, ramie, and kudzu was high. In particular, the ramie protein content was as high as 22.38% and the fibre content was also high; 2） the gross energy of kudzu was the highest （17. 17 MJ · kg ^-1）; 3） there were abundant amino acids in mulberry, ramie, and kudzu. In particular, the content of the first restrictive amino acid, lysine, was 0.65%-0.89% and the total essential amino acid content was 5.10%-7.40%. Therefore, mulberry, ramie, and kudzu could be high quality forage grass resources available for development and usage in southern China.