我国畜禽饲料资源中微量元素硒含量分布的调查

王丽赛,张丽阳,马雪莲,王良治,邢冠中,杨柳,于涛,吕林,廖秀冬,李素芬,罗绪刚

A Survey on Distribution of Selenium Contents in Feedstuffs for Livestock and Poultry in China

WANG LiSai,ZHANG LiYang,MA XueLian,WANG LiangZhi,XING GuanZhong,YANG Liu,YU Tao,LÜ Lin,LIAO XiuDong,LI SuFen,LUO XuGang

表7 矿物质饲料中硒含量分布（风干基础)

Table 7 Distribution of Se contents in mineral ingredients (air-dry basis)

样品名称 Name of samples 省(市、区)数 No. of provinces (municipalities, regions) 样品数 No. of samples 硒含量Se contents (mg·kg-1) 平均值±标准差 Mean ± standard deviation 最大值 Maximum 最小值 Minimum 石粉 Limestone 18 65 0.544±0.448 3.072 0.006 磷酸氢钙 Dicalcium phosphate 4 45 0.344±0.215 1.095 0.024 骨粉 Bone meal 15 28 0.436±0.253 2.552 0.045 贝壳粉 Oyster shell meal 2 9 0.085±0.019 0.185 0.031 P值 P value 0.310 总平均值 Total average 0.352