猪配合饲料中铅、镉、铬、砷含量的调查研究

doi:10.16174/j.issn.1673-4645.2026.05.005

Abstract

Abstract: The purpose of this survey was to evaluate the content of heavy metals in swine formula feed at different growth stages. A total of 152 feed products were collected. After pretreatment by dry ashing method, the content of lead, cadmium and chromium in the samples was determined by inductively coupled plasma mass spectrometry (ICP-MS), and the content of arsenic in the samples was determined by atomic fluorescence spectrometry. The results showed that the highest cadmium content in 152 batches of pig compound feed was 0.1 mg/kg (the national feed hygiene limit standard is ≤0.5 mg/kg), and the highest arsenic content was 0.62 mg/kg (the national feed hygiene limit standard is ≤2 mg/kg), which did not exceed the national feed hygiene limit standard. However, among the 152 feed products, 2 samples exceeded the national feed hygiene limit standard (≤5 mg/kg) for lead content, with an exceedance rate of 1.32%. Additionally, 18 samples exceeded the national feed hygiene limit standard (≤5 mg/kg) for chromium content, with an exceedance rate of 11.84%. The feed with excessive lead content was mainly piglet compound feed, while the feed with excessive chromium content mainly included piglet compound feed, growing pig compound feed, and sow compound feed. To sum up, the lead and chromium content of some samples tested in this sample exceed the standard, but the over-standard rate was not high. It was suggested that there were some potential hidden dangers of excessive heavy metals in swine formula feed, especially lead and chromium in compound feed for piglets, which requires attention.

Key words: swine, formula feed, lead, cadmium, chromium, arsenic, test

CLC Number:

S828

BIAN Zhengrong, CHENG Chuanmin, JIANG Xin, CHEN Fei, DING Xiaoqiao. A survey on lead, cadmium, chromium, and arsenic contents in swine formula feed[J].China Swine Industry, 2026, 21(5): 92-97.

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A survey on lead, cadmium, chromium, and arsenic contents in swine formula feed

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