我国畜禽饲料资源中微量元素铜含量分布的调查

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

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

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

表7 矿物质饲料中铜含量分布（风干基础）

Table 7 Distribution of Cu 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 铜含量Cu contents (mg·kg-1) 平均值±标准差 Mean ± standard deviation 中位数 Median 众数 Mode 石粉 Limestone 16 45 3.39±1.95b 3.45 3.50 磷酸氢钙 Dicalcium phosphate 12 43 11.45±5.96a 10.73 7.55 骨粉 Bone meal 15 28 6.89±3.64b 5.79 5.46 贝壳粉 Oyster shell meal 5 8 5.42±3.44b 7.69 - P值 P-value ＜0.001 总平均值 Total average 6.79