Growth traits | cGH | IGF-I | ||||||
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AA (n = 27) | AG (n = 178) | GG (n = 203) | SEM | AA (n =135) | AC (n = 215) | CC (n = 58) | SEM | |
BW (g) | ||||||||
0 | 37.1 | 36.4 | 35.8 | 0.5 | 36.7 | 36.0 | 36.1 | 0.3 |
2 | 204.8 | 213.2 | 213.8 | 5.4 | 219.8a | 210.4b | 208.6b | 3.6 |
4 | 639.3b | 696.0a | 700.1a | 12.5 | 704.4 | 691.0 | 696.1 | 8.5 |
6 | 1,161.0b | 1,268.3a | 1,268.9a | 23.2 | 1,276.2 | 1,265.3 | 1,239.6 | 15.8 |
8 | 1,689.7 | 1,782.2 | 1,788.2 | 35.0 | 1,794.7 | 1,782.5 | 1,785.5 | 23.8 |
10 | 2,194.4 | 2,296.4 | 2,325.9 | 42.4 | 2,298.4 | 2,304.6 | 2,303.0 | 29.4 |
ADG (g/d) | ||||||||
0–2 | 12.0 | 12.6 | 12.7 | 0.4 | 13.1a | 12.5b | 12.3b | 0.3 |
2–4 | 31.1B | 34.5A | 34.7A | 0.6 | 34.6 | 34.4 | 34.8 | 0.4 |
4–6 | 37.3 | 40.9 | 40.6 | 1.1 | 40.8ab | 41.0a | 38.8b | 0.7 |
6–8 | 37.8 | 36.7 | 37.1 | 1.7 | 37.0 | 36.9 | 39.0 | 1.2 |
8–10 | 35.5 | 36.6 | 37.7 | 1.6 | 36.0 | 36.7 | 37.4 | 1.1 |
0–6 | 26.8b | 29.3a | 29.4a | 0.5 | 29.5 | 28.3 | 28.7 | 0.4 |
0–8 | 29.5 | 31.2 | 31.3 | 0.6 | 31.4 | 31.2 | 31.2 | 0.4 |
0–10 | 30.8 | 32.3 | 32.7 | 0.6 | 32.3 | 32.4 | 32.4 | 0.4 |
Breed/genotype | Growth performance traits | |||||||||||||
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BW (g) | ADG (g/d) | |||||||||||||
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0 | 2 | 4 | 6 | 8 | 10 | 0–2 | 2–4 | 4–6 | 6–8 | 8–10 | 0–6 | 0–8 | 0–10 | |
PS×KM | ||||||||||||||
AA (n = 5) | 38.4 | 228.0 | 626.8B | 1,228.9B | 1,689.8B | 2,162.0b | 13.5 | 28.5B | 43.0B | 32.9 | 32.7 | 28.3B | 29.5b | 30.3b |
AG (n = 31) | 37.9 | 237.5 | 732.7A | 1,438.9A | 1,940.2A | 2,427.4a | 14.3 | 35.4A | 50.4A | 35.8 | 35.6 | 33.4A | 34.0a | 34.1a |
GG (n = 68) | 38.2 | 237.6 | 752.2A | 1,453.1A | 1,987.3A | 2,472.8a | 14.2 | 36.8A | 50.1A | 38.2 | 35.7 | 33.7A | 34.8a | 34.8a |
SEM | 0.8 | 9.9 | 21.5 | 36.8 | 54.9 | 71.0 | 0.7 | 1.1 | 1.5 | 2.8 | 3.2 | 0.9 | 1.0 | 1.0 |
PS×KT | ||||||||||||||
AA (n = 16) | 37.9a | 209.4 | 674.9 | 1,170.0 | 1,723.0 | 2,258.4 | 12.2 | 33.3 | 35.4 | 39.3 | 38.2b | 27.0 | 30.1 | 31.7 |
AG (n = 46) | 37.3a | 203.4 | 689.4 | 1,182.5 | 1,670.6 | 2,201.8 | 11.9 | 34.7 | 35.2 | 34.8 | 37.8b | 27.3 | 29.2 | 30.9 |
GG (n = 39) | 34.9b | 206.9 | 705.0 | 1,202.8 | 1,666.5 | 2,295.3 | 12.3 | 35.6 | 35.6 | 33.8 | 44.3a | 27.8 | 29.1 | 32.3 |
SEM | 0.7 | 7.8 | 18.4 | 34.0 | 52.9 | 61.7 | 0.5 | 0.9 | 1.7 | 2.5 | 2.0 | 0.8 | 0.9 | 0.9 |
PS×SN | ||||||||||||||
AA (n = 5) | 35.0 | 232.3 | 703.3 | 1,311.4 | 1,844.2 | 2,337.5 | 14.1 | 33.8 | 43.4 | 38.1 | 35.2 | 30.4 | 32.3 | 32.9 |
AG (n = 50) | 33.7 | 229.6 | 701.0 | 1,320.5 | 1,899.1 | 2,366.5 | 14.0 | 33.8 | 44.3 | 41.3 | 33.3 | 30.6 | 33.3 | 33.3 |
GG (n = 49) | 34.1 | 232.5 | 692.9 | 1,314.7 | 1,869.1 | 2,326.5 | 14.2 | 32.9 | 44.4 | 39.6 | 32.8 | 30.5 | 32.8 | 32.8 |
SEM | 0.7 | 7.3 | 15.5 | 30.9 | 43.2 | 62.1 | 0.5 | 0.7 | 1.5 | 1.8 | 2.5 | 0.7 | 0.8 | 0.9 |
PS×SP | ||||||||||||||
AG (n = 51) | 35.0 | 216.9 | 701.5 | 1,264.2 | 1,762.6 | 2,287.9 | 13.0 | 34.6 | 40.2 | 35.6 | 37.3 | 29.3 | 30.9 | 32.2 |
GG (n = 47) | 34.6 | 212.5 | 682.7 | 1,229.5 | 1,725.0 | 2,270.0 | 12.7 | 33.6 | 39.1 | 35.4 | 36.3 | 28.4 | 30.2 | 31.9 |
SEM | 0.5 | 4.9 | 13.6 | 25.6 | 39.5 | 47.2 | 0.3 | 0.7 | 1.2 | 1.9 | 1.8 | 0.6 | 0.7 | 0.70 |
BW, body weight (at hatching 2, 4, 6, 8, and 10 weeks of age); ADG, average daily gain (during 0 to 2, 2 to 4, 4 to 6, 6 to 8, 8 to 10, 0 to 6, 0 to 8, and 0 to 10 weeks of age); PS, broiler breeder sire; KM, Khai Mook Esarn; SEM, standard error of the mean; KT, Kaen Thong; SN, Soi Nin; SP, Soi Pet dam line.
Breeds/genotype | Growth performance traits | |||||||||||||
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BW (g) | ADG (g/d) | |||||||||||||
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0 | 2 | 4 | 6 | 8 | 10 | 0–2 | 2–4 | 4–6 | 6–8 | 8–10 | 0–6 | 0–8 | 0–10 | |
PS×KM | ||||||||||||||
AA (n = 44) | 38.5 | 247.2a | 711.6 | 1,376.8 | 1,870.2 | 2,383.3 | 14.9a | 33.2 | 47.5 | 35.2 | 36.9 | 31.9 | 32.7 | 33.5 |
AC (n = 46) | 37.6 | 235.8ab | 705.3 | 1,362.2 | 1,869.8 | 2,341.1 | 14.2ab | 33.5 | 46.9 | 36.3 | 33.8 | 31.5 | 32.7 | 32.9 |
CC (n = 14) | 38.4 | 220.1b | 694.8 | 1,382.0 | 1,877.2 | 2,337.7 | 13.0b | 33.9 | 49.1 | 35.4 | 33.3 | 32.0 | 32.8 | 32.8 |
SEM | 0.7 | 8.9 | 19.4 | 33.3 | 49.6 | 64.7 | 0.6 | 1.0 | 1.4 | 2.6 | 2.9 | 0.8 | 0.9 | 0.9 |
PS×KT | ||||||||||||||
AA (n = 31) | 37.4 | 210.4 | 697.5 | 1,207.9ab | 1,673.2 | 2,230.8 | 12.4 | 34.8 | 36.5ab | 33.1 | 39.4 | 27.9ab | 29.2 | 31.3 |
AC (n = 55) | 36.6 | 206.2 | 692.7 | 1,227.5a | 1,729.5 | 2,290.7 | 12.1 | 34.8 | 38.2a | 36.5 | 39.9 | 28.4a | 30.2 | 32.2 |
CC (n = 15) | 36.2 | 203.0 | 679.0 | 1,120.0b | 1,657.4 | 2,234.0 | 11.9 | 34.0 | 31.5b | 38.3 | 41.1 | 25.8b | 29.0 | 31.4 |
SEM | 0.7 | 7.8 | 18.6 | 34.3 | 53.4 | 62.2 | 0.5 | 0.9 | 1.7 | 2.6 | 2.0 | 0.8 | 0.9 | 0.9 |
PS×SN | ||||||||||||||
AA (n = 45) | 35.5a | 229.0ab | 692.7ab | 1,320.0 | 1,881.3 | 2,329.3 | 13.8ab | 33.1 | 44.8 | 40.1 | 32.2 | 30.6 | 33.0 | 32.8 |
AC (n = 44) | 34.0b | 222.9b | 682.0b | 307.0 | 1,839.8 | 2,322.9 | 13.5b | 33.0 | 44.6 | 38.1 | 34.4 | 30.3 | 32.2 | 32.7 |
CC (n = 15) | 33.4b | 242.6a | 722.5a | 1,319.5 | 1,891.3 | 2,378.3 | 14.9a | 34.3 | 42.6 | 40.8 | 34.7 | 30.6 | 33.2 | 33.5 |
SEM | 0.7 | 6.6 | 14.0 | 28.0 | 39.0 | 56.5 | 0.5 | 0.7 | 1.4 | 1.6 | 2.3 | 0.7 | 0.7 | 0.8 |
PS×SP | ||||||||||||||
AA (n = 15) | 34.5 | 255.8a | 698.3 | 1,253.9 | 1,736.7 | 2,229.0 | 13.7a | 39.7 | 34.5 | 33.7 | 33.4 | 29.0 | 30.4 | 31.4 |
AC (n = 70) | 35.2 | 213.6ab | 683.5 | 1,257.0 | 1,733.2 | 2,279.2 | 12.7ab | 41.0 | 34.0 | 37.3 | 37.0 | 29.1 | 30.3 | 32.1 |
CC (n = 14) | 34.7 | 204.8b | 694.5 | 1,229.6 | 1,761.6 | 2,328.6 | 12.1b | 38.2 | 38.0 | 39.4 | 39.1 | 28.5 | 30.8 | 32.8 |
SEM | 0.6 | 6.2 | 17.3 | 32.5 | 50.1 | 53.3 | 0.4 | 1.6 | 2.5 | 4.6 | 2.3 | 0.8 | 0.9 | 0.8 |
BW, body weight (at hatching 2, 4, 6, 8, and 10 weeks of age); ADG, average daily gain (during 0 to 2, 2 to 4, 4 to 6, 6 to 8, 8 to 10, 0 to 6, 0 to 8, and 0 to 10 weeks of age); PS, broiler breeder sire; KM, Khai Mook Esarn; SEM, standard error of the mean; KT, Kaen Thong; SN, Soi Nin; SP, Soi Pet dam line.
Dressing percentage: the percentage of carcass weight without visceral organ, head, neck, and shanks, calculated on live weight. The percentage of breast muscle, wing, drumstick, and thigh calculated on carcass weight without visceral organs, head, neck, and shanks. cGH, chicken growth hormone gene; SEM, standard error of the mean; IGF-I, insulin-like growth factor-I gene.