Components and contents of fatty acids of four grasslands in Yanchi, Ningxia

The composition of fatty acids in the mixed pasture grasses of Ningxia pond was determined using gas chromatography. In the mixed pasture, there were 30~34 fatty acids in May and there were 29~34 fatty acids in October. The percentage of saturated fatty acids, single unsaturated fatty acids and polyunsaturated fatty acids in total fatty acids in the mixed pasture in May was 26.80%~42.87%, 15.56%~24.54% and 36.71%~56.95%, respectively. Short chain fatty acids and satiric acid which influence local lamb meat quality only accounted for 0.46%~0.79% and 2.26%~7.58%, respectively. The percentage of saturated fatty acids, single unsaturated fatty acids and polyunsaturated fatty acids in total fatty acids in the mixed pasture in October was 22.51%~33.46%, 13.65%~27.15% and 46.70%~60.91%, respectively. The research indicated that there are more polyunsaturated fatty acids and less short chain fatty acid and satiric acid in the mixed pasture.