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Table 3 Growth performance of growing-finishing pigs fed low protein diet supplemented with different amino acids (n = 6)

From: Effect of different dietary protein levels and amino acids supplementation patterns on growth performance, carcass characteristics and nitrogen excretion in growing-finishing pigs

Item HCP MCP (−2 %) LCP(− 4 %) P 1 P 2
10 EAAs 10 EAAs 10 EAAs Lys, Met,Thr,
Trp
Lys,Met,Thr,
Trp, Ile
Lys,Met,Thr,
Trp, Val
Lys, Met,Thr,
Trp, Ile, Val
Phase I (25–50 kg)
 Initial weight, kg 25.4 ± 0.7 25.5 ± 0.8 25.4 ± 0.5 25.5 ± 0.6 25.4 ± 0.7 25.4 ± 0.5 25.8 ± 0.8 0.94 0.98
 Final weight, kg 51.5 ± 0.7 51.8 ± 0.6 50.5 ± 2.0abc 47.4 ± 2.0c 48.3 ± 1.1bc 52.0 ± 0.9ab 52.3 ± 0.6a 0.56 0.05
 ADFI, g 1641 ± 55 1607 ± 60 1573 ± 43bc 1550 ± 112bc 1461 ± 86c 1795 ± 56a 1715 ± 22ab 0.68 0.02
 ADG, g 791 ± 33 808 ± 29 761 ± 18ab 665 ± 44b 691 ± 44b 801 ± 26a 813 ± 13a 0.49 < 0.01
 F/G 2.09 ± 0.07 1.99 ± 0.05 2.07 ± 0.02b 2.33 ± 0.06a 2.12 ± 0.06b 2.23 ± 0.08ab 2.11 ± 0.04b 0.37 0.02
Phase II (50–75 kg)
 Initial weight, kg 51.5 ± 0.7 51.8 ± 0.6 50.5 ± 2.0abc 47.4 ± 2.0c 48.3 ± 1.1bc 52.0 ± 0.9ab 52.3 ± 0.6a 0.56 0.05
 Final weight, kg 75.8 ± 1.8 77.0 ± 1.9 76.0 ± 1.5 77.0 ± 2.3 71.7 ± 2.7 76.8 ± 1.6 76.0 ± 1.2 0.92 0.10
 ADFI, g 2132 ± 46 2076 ± 146 2351 ± 77 2280 ± 63 2155 ± 106 2306 ± 96 2307 ± 62 0.15 0.53
 ADG, g 866 ± 32 844 ± 56 908 ± 43 842 ± 24 838 ± 31 883 ± 34 860 ± 28 0.58 0.51
 F/G 2.48 ± 0.08 2.47 ± 0.08 2.63 ± 0.18 2.71 ± 0.05 2.57 ± 0.06 2.62 ± 0.13 2.69 ± 0.05 0.61 0.90
Phase III (75–100 kg)
 Initial weight, kg 75.8 ± 1.8 77.0 ± 1.9 76.0 ± 1.5 77.0 ± 2.3 71.7 ± 2.7 76.8 ± 1.6 76.0 ± 1.2 0.92 0.10
 Final weight, kg 103.2 ± 2.6 103.9 ± 2.6 104.1 ± 2.1 99.4 ± 2.7 101.7 ± 2.6 102.4 ± 2.9 104.0 ± 1.6 0.60 0.60
 ADFI, g 2734 ± 142 2699 ± 143 2703 ± 67 2949 ± 104 2703 ± 140 2709 ± 101 2753 ± 93 0.97 0.41
 ADG, g 932 ± 50 902 ± 36 938 ± 34ab 947 ± 43ab 1000 ± 18a 856 ± 52b 914 ± 22ab 0.80 0.06
 F/G 2.94 ± 0.07 2.99 ± 0.13 2.90 ± 0.11ab 3.13 ± 0.08a 2.71 ± 0.15b 3.20 ± 0.16a 3.01 ± 0.11ab 0.81 0.07
Phase IV (100–125 kg)
 Initial weight, kg 103.2 ± 2.6 103.9 ± 2.6 104.1 ± 2.1 99.4 ± 2.7 101.7 ± 2.6 102.4 ± 2.9 104.0 ± 1.6 0.60 0.60
 Final weight, kg 123.9 ± 3.2 123.6 ± 3.3 122.8 ± 3.2 118.8 ± 3.4 123.2 ± 3.1 122.3 ± 3.1 120.7 ± 2.1 0.97 0.87
 ADFI, g 3080 ± 145 2866 ± 117 3049 ± 135 3146 ± 109 3083 ± 105 3104 ± 103 2829 ± 210 0.52 0.54
 ADG, g 958 ± 62 937 ± 68 889 ± 57ab 926 ± 52ab 1022 ± 47a 946 ± 53ab 798 ± 38 b 0.95 0.08
 F/G 3.25 ± 0.16 3.1 ± 0.21 3.28 ± 0.08ab 3.42 ± 0.10a 3.03 ± 0.10b 3.31 ± 0.13ab 3.53 ± 0.14a 0.70 0.04
Overall (25–125 kg)
 Initial weight, kg 25.4 ± 0.7 25.5 ± 0.8 25.4 ± 0.5 25.5 ± 0.6 25.4 ± 0.7 25.4 ± 0.5 25.8 ± 0.8 0.94 0.98
 Final weight, kg 123.9 ± 3.2 123.6 ± 3.3 122.8 ± 3.2 118.8 ± 3.4 123.2 ± 3.1 122.3 ± 3.1 120.7 ± 2.1 0.97 0.87
 ADFI, g 2326 ± 77 2270 ± 108 2347 ± 53 2406 ± 74 2271 ± 95 2413 ± 46 2351 ± 76 0.91 0.43
 ADG, g 879 ± 22 876 ± 37 877 ± 25 833 ± 29 872 ± 21 865 ± 28 856 ± 11 0.99 0.72
 F/G 2.64 ± 0.05 2.60 ± 0.10 2.63 ± 0.04bc 2.88 ± 0.04a 2.58 ± 0.07c 2.80 ± 0.08ab 2.75 ± 0.08ab 0.89 0.01
  1. P1 represented the P value of ANOVA among the HCP diet, MCPdiet and LCP diet with balancing 10 EAAs
  2. P2 represented the P value of ANOVA among different amino acid balanced patterns of the LCP diets groups
  3. a,b,cSuperscripts indicated differences among different amino acid balanced patterns of LCP diets groups