Figure 5From: Effects of "Bioactive" amino acids leucine, glutamate, arginine and tryptophan on feed intake and mRNA expression of relative neuropeptides in broiler chicksCumulative feed intake of broiler chicks after ICV administration with saline (control, n = 9), 10 μg (n = 8) or 100 μg (n = 9) L-tryptophan. Feed intake was recorded at 0.25, 0.5, 1, 1.5, and 2 h post-administration; Data are represented as means ± S.E.M.Back to article page