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An increased ratio of dietary tryptophan to lysine improves feed efficiency and elevates plasma tryptophan and kynurenine in the absence of antimicrobials and regardless of infection with enterotoxigenic Escherichia coli in weaned pigs.
Capozzalo MM, Kim JC, Htoo JK, de Lange CF, Mullan BP, Hansen CF, Resink JW, Stumbles PA, Hampson DJ, Pluske JR. Capozzalo MM, et al. Among authors: kim jc. J Anim Sci. 2012 Dec;90 Suppl 4:191-3. doi: 10.2527/jas.53900. J Anim Sci. 2012. PMID: 23365326 Clinical Trial.
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