| The experiment collected 15 corn samples in different region of shaanxi and shanxi province, including sanyuan, huaxian, jingyang, gaoling, chengxian, wugong, yaliang in shaanxi and yuncheng,xinjiang in shanxi. And they are detected and analysed from unit weigt, moisture content, crude protein content, fat content, mildew rate, mycotoxin contamination and so on. Experimental data show that the moisture content is between 14.56%~16.21%, it is above the Chinese Maize Standards for Feed, the unit weight of the samples which reach the national first level standard is Number 9(710.87 g/L) from gaoling and Number 10(711.53 g/L) from jingyang, the lowest one is Number 13 from yuncheng of shaanxi; the crude protein content is between 7.35%~8.94%; and there are big differences in fat content among the samples, it differs by 2.11 percent between the highest amount of fat content and the lowest, and the differences in coefficient of variation of the samples also; there are 7 samples have not reach the standard in them about mildew rate, the defect rate reached to 50%; all the samples tested negative for aflatoxin zearalenone vomitoxin except three from jingyang, wugong and yuncheng, zearalenoneand vomitoxin contamination in all of the samples are also serious. Comprehensive analysis of the above indicators, the corn in jingyang district is better. |