At the phylum level, the relative abundance of Proteobacteria was significantly lower in ARG than CON birds ( P < 0.05), while Firmicutes had a similar trend toward significance.
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Feeding broiler chickens with arginine above recommended levels: effects on growth performance, metabolism, and intestinal microbiota.
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The sentences
In addition, the concentrations of arginine, betaine, and histidine were significantly greater for ARG birds, with acetate and creatine exhibiting a similar tendency toward significance.
In the caeca, ARG birds showed a significantly lower concentration of leucine and an almost significant increase in thymine than CON birds.
While glutathione displayed a decreasing trend in ARG birds, aspartate, creatine, leucine, phenylalanine, and threonine varied in the opposite way.