Characteristics of amino acid constituents of cultivated forages in Tibet province

Abstract

Abstract: The characteristics of total amino acid (TAA), essential amino acids (EAA), sulfur amino acid, and limited amino acid of 57 cultivated forages in Tibet were studied. The TAA content ranged from 6.11% to 23.71% and declined in the sequence Leguminosae>Chenopodiaceae>Gramineae. The average content of EAA was 6.42% and the highest and the lowest ratios of EAA to TAA content were in the Leguminosae and Gramineae, respectively. The sulfur amino acid content ranged from 0.44% to 1.63%, and varied greatly between species. There was also a high ratio of limited amino acid content, which ranged from 0.63% to 2.25%. There were 47 species, accounting for 82% of all the forages, with ratios of EAA/NEAA>60% and of EAA/TAA>40%. This showed that there was a reasonable constitutive ratio of amino acid and high nutritive value in the cultivated forages, which were therefore excellent feed resources for local livestock.

CLC Number:

S54
Q946

JIANG Wen-qing, ZHOU Zhi-yu,QIN Yu, WANG Nan,WANG Tao,LI Xiao-zhong,TIAN Fa-yi. Characteristics of amino acid constituents of cultivated forages in Tibet province[J]. Acta Prataculturae Sinica, 2010, 19(5): 148-155.

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