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Table 2 Productive performance of broiler chickens fed a commercial basal diet (CON, n = 9; digestible Arg:Lys = 1.05, 1.05, 1.06 and 1.07) or the same basal diet supplemented with L-arginine (ARG, n = 9; digestible Arg:Lys = 1.15, 1.15, 1.16 and 1.17)

From: Effect of dietary arginine to lysine ratios on productive performance, meat quality, plasma and muscle metabolomics profile in fast-growing broiler chickens

Variables CON ARG SEM P-value
0–12 d
 Chick body weight, g/bird 37.1 36.9 0.09 0.27
 Body weight, g/bird 288.5 293.0 2.47 0.38
 Daily weight gain, g/(bird·d)a 21.0 21.3 0.20 0.39
 Daily feed intake, g/(bird·d)a 29.3 28.8 0.19 0.21
 Feed conversion rate (0–12 d)a 1.401 1.352 0.01 0.02
 Mortality, % 0.00 0.17 0.01 0.33
13–22 d
 Body weight, g/bird 846.7 856.1 6.08 0.46
 Daily weight gain, g/(bird·d)a 55.8 56.3 0.43 0.56
 Daily feed intake, g/(bird·d)a 79.7 79.8 0.60 0.92
 Feed conversion rate (13–22 d)a 1.429 1.419 0.01 0.37
 Cumulative feed conversion rate (0–22 d)a 1.420 1.398 0.01 < 0.01
 Mortality, % 0.34 0.52 0.02 0.69
23–33 d
 Body weight, g/bird 1829 1884 12.8 0.03
 Daily weight gain, g/(bird·d)a 89.3 93.1 1.11 0.08
 Daily feed intake, g/(bird·d)a 143.6 145.5 1.02 0.39
 Feed conversion rate (23–33 d)a 1.610 1.571 0.01 0.09
 Cumulative feed conversion rate (0–33 d)a 1.524 1.494 0.01 0.02
 Mortality, % 0.17 0.35 0.01 0.55
34–43 d
 Body weight, g/bird 2864 2920 26.0 0.30
 Daily weight gain, g/(bird·d)a 101.6 102.3 1.62 0.83
 Daily feed intake, g/(bird·d)a 197.1 196.9 1.41 0.94
 Feed conversion rate (34–43 d)a 1.949 1.926 0.02 0.62
 Mortality, % 1.37 1.71 0.02 0.62
0–43 d
 Body weight, g/bird 2864 2920 26.0 0.30
 Daily weight gain, g/(bird·d)a 65.7 67.0 0.60 0.30
 Daily feed intake, g/(bird·d)a 109.1 109.2 0.54 0.94
 Feed conversion rate (0–43 d)a 1.675 1.646 0.01 0.09
 Mortality, % 1.88 2.74 0.02 0.21
  1. a Corrected for mortality