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Branched-chain amino acids partially recover the reduced growth of pigs fed with protein-restricted diets through both central and peripheral factors

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Animal Nutrition 2021年第3期7卷 868-882页

作者： Mohammad Habibi Cedrick Shili Julia Sutton Parniyan Goodarzi Excel Rio Maylem Leon Spicer Adel Pezeshki Department of Animal and Food Sciences Oklahoma State UniversityStillwaterOK74078USA

The objective of this study was to assess the growth efficiency of pigs fed with protein-restricted diets supplemented with branched-chain amino acids(BCAA)and limiting amino acids(LAA)above the rec-ommended *** 2 weeks of adaptation,48 young barrows were weight matched and randomly assigned to 6 treatments(8 pigs/treatment)for 4 weeks:positive control(PC)with standard protein,negative control(NC)with very low protein containing LAA(i.e.,Lys,Met,Thr and Trp)at rec-ommended levels,and NC containing LAA 25%(L25),LAA 50%(L50),LAA+BCAA(i.e.,Leu,Ile and Val)25%(LB25)and LAA+BCAA 50%(LB50)more than *** intake(FI)and body weight(BW)were measured daily and weekly,*** week 6,blood samples were collected,all pigs euthanized and tissue samples *** data were analyzed by univariate GLM or mixed procedure(SPSS)and the means were separated using paired Student's t-test followed by Benjamini-Hochberg *** to PC,NC had decreased FI,BW,unsupplemented plasma essential amino acids,serum insulin-like growth factor-I(IGF-I)and hypothalamic neuropeptide Y(NPY)(Pprotein-restricted diets with increased levels of dietary BCAA partially recovered the negative effects of these diets on growth through improved IGF-I concentration and FI,which was associated with changed expression of serotonin receptors,blood AA and hypothalamic NPY.

关键词： Branched-chain amino acid very low protein diet NPY insulin-like growth factor-Ⅰ Serotonin Pig

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