Effect of lysine, methionine and tryptophan supplementation upon nitrogen retention of barrows.
D000821:Animal Feed; D000818:Animals; D001835:Body Weight; D004044:Dietary Proteins / Q000378:metabolism*; D008239:Lysine / Q000494:pharmacology*; D008715:Methionine / Q000494:pharmacology*; D009584:Nitrogen / Q000378:metabolism*; D013552:Swine / Q000378:metabolism*; D014364:Tryptophan / Q000494:pharmacology*
D004044:Dietary Proteins; D014364:Tryptophan; D008715:Methionine; D008239:Lysine; D009584:Nitrogen