数字农科院2.0

Chromium picolinate alleviates heat stress-induced breast muscle glucose and lipid metabolism disorders in broiler chickens

文献类型： 外文期刊

作者： Miao Yu;Xiumei Li;Xin Zhao;Jinghai Feng;Minhong Zhang

作者机构：

关键词： Broiler;Chromium;Glucose and lipid metabolism;Heat stress;PPARα

期刊名称： Poultry Science

ISSN： 0032-5791

年卷期： 2025 年 104 卷 11 期

页码：

收录情况： SCIE（2025版）

摘要： To date, extensive research has shown that heat stress disturbs glucose and lipid metabolism in broiler chickens. Recent evidence suggests that chromium supplementation influences metabolic regulation, particularly in glucose and lipid homeostasis in mammals. This study aimed to evaluate the effects of chromium picolinate supplementation on glucose and lipid metabolism in the breast muscle of broiler chickens under chronic heat stress. A total of 180 male Arbor Acres (AA) broilers (22 days old) were randomly assigned to three groups: a thermoneutral control group (21°C), a heat stress group (31°C), and a heat stress group receiving chromium picolinate (31°C + 400 μg/Kg elemental chromium). After 14 days, heat stress significantly impaired growth performance, induced insulin resistance, increased fat deposition, and suppressed the expression of key glucose and lipid metabolic genes. In contrast, chromium picolinate improved the average daily feed intake (ADFI), average daily gain (ADG), and reduced feed conversion ratio (FCR). It also upregulated glucose metabolism genes (GLUT1, PI3K, GS) and lipid metabolism genes (PPARα, CPT-1, LPL) in breast muscle. Overall, chromium picolinate alleviated heat stress-induced skeletal muscle glucose and lipid metabolism disturbances in broiler chickens.

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