Dietary Manganese Supplementation Influences the Expression of Transporters Involved in Iron Metabolism in Chickens |
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| Authors: | Shiping Bai Lirong Huang Yuheng Luo Leilei Wang Xuemei Ding Jianping Wang Qiufeng Zeng Keying Zhang |
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| Institution: | 1. Institute of Animal Nutrition, Feed Engineering Research Centre of Sichuan Province, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, 625014, Ya’an, Sichuan, People’s Republic of China
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| Abstract: | To investigate the effects of dietary manganese (Mn) supplementation on iron (Fe) metabolism, a total of 480 50-week-old hens were fed the basal diet (control, 24.35 mg Mn/kg) without Mn supplementation for 6 weeks to reduce Mn storage in the body. Hens were then randomly assigned to one of three treatments, which included the control and control added with 60 or 300 mg Mn/kg diet (M-Mn or H-Mn). Duodenum, heart, liver, and tibia were collected in hens after 12-week feeding period. No significant differences were observed in egg production, feed/egg ratio, shell breaking strength, and shell thickness among different treatments. Compared with control or M-Mn, H-Mn decreased (P?P?P?P?P?>?0.10) Fe concentration in the heart and tibia. In conjunction with reduced Fe retention, DMT1 mRNA expression decreased (P?mRNA level was higher (P?mRNA expression was lower (P?
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