Purified dietary red and white meat proteins show beneficial effects on growth and metabolism of young rats compared to casein and soy protein

Shangxin Song, Chun Hua, Fan Zhao, Mengjie Li, Qingquan Fu, Guido J. E. J. Hooiveld, Michael Muller, Chunbao Li (Lead Author), Guanghong Zhou (Lead Author)

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This study compared the effects of casein, soy protein (SP), red (RMP) and white meat (WMP) proteins on growth and metabolism of young rats. Compared to casein, the ratio of daily feed intake to daily body weight gain of rats was not changed by meat protein but reduced by SP by 93.3% (P<0.05). Feeding RMP and WMP reduced the liver total cholesterol (TC) contents by 24.3% and 17.8% respectively (P<0.05). Only RMP increased plasma HDL-cholesterol concentrations (by 12.7%, P<0.05), whereas SP increased plasma triacylglycerol, TC and LDL-cholesterol concentrations by 23.7%, 19.5% and 61.5% respectively (P<0.05). Plasma essential and total amino acid concentrations were increased by WMP (by 18.8% and 12.4%, P<0.05) but reduced by SP (by 28.3 and 37.7%, P<0.05). Twenty five liver proteins were differentially expressed in response to different protein sources. Therefore, meat proteins were beneficial for growth and metabolism of young rats compared to casein and SP.
Original languageEnglish
Pages (from-to)9942–9951
Number of pages10
JournalJournal of Agricultural and Food Chemistry
Issue number38
Early online date3 Sep 2018
Publication statusPublished - 26 Sep 2018


  • red meat
  • white meat
  • protein quality
  • molecular nutrition
  • proteomics

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