Table 5.
Estimation of growth curve parameters by strains in new synthetic Korean native commercial chickens

Function1) Parameter2) Female Male
FHFY FHHY HFFY HFHY FHFY FHHY HFFY HFHY
GOMP A 3,327±57 3,674±103.1 3,545±85.5 3,280±72.2 4,829±125.1 5,133±163.7 5,229±155.5 5,050±140.1
b 3.84±0.085 3.73±0.032 3.89±0.041 3.74±0.038 3.96±0.036 3.99±0.031 4.1±0.048 4.01±0.035
k 0.03±0.001 0.03±0.001 0.03±0.001 0.03±0.001 0.03±0.001 0.02±0.001 0.02±0.001 0.02±0.001
ti 48.8±0.76 52.8±1.15 52.1±1.01 49.2±0.87 55.4±1.0 59±1.48 60.3±1.43 58.7±1.24
Wi 1284±22.0 1399±35.1 1368±33.0 1266±27.9 1864±48.3 1981±63.2 2019±60.0 1949±54.1
VONB A 4,261±101.4 5,081±257.9 4,786±189.5 4,250±136.4 6,712±239.6 8,115±510.3 8,524±513.2 7,827±454.7
b 0.78±0.007 0.78±0.003 0.79±0.006 0.78±0.007 0.8±0.004 0.8±0.003 0.82±0.007 0.81±0.005
k 0.02±0.001 0.02±0.000 0.02±0.001 0.02±0.001 0.02±0.000 0.01±0.001 0.01±0.001 0.01±0.001
t i 49.9±1.08 57.3±2.25 55.4±1.66 50.7±1.33 60.6±1.64 69.3±3.16 72.2±3.06 68±2.68
W i 1262±30.1 1505±76.4 1418±56.2 1259±40.4 1989±71.0 2404±151.2 2526±152.1 2319±134.7
LOGI A 2,592±33.6 2,707±40.2 2,669±44.4 2,533±37.5 3,473±51.9 3,554±64.7 3,559±62.3 3,532±57.8
b 18.61±0.81 17.99±0.307 19.47±0.414 17.49±0.302 20.74±0.452 21.09±0.468 22.73±0.654 21.35±0.46
k 0.06±0.001 0.05±0.001 0.06±0.001 0.06±0.001 0.05±0.001 0.05±0.001 0.05±0.001 0.05±0.001
t i 51.3±0.57 53.6±0.63 53.3±0.70 51.4±0.56 55.3±0.57 56.9±0.77 57.4±0.75 57±0.65
W i 1,296±16.8 1,353±20.1 1,335±22.2 1,266±18.7 1,737±25.9 1,777±32.3 1,780±31.1 1,766±28.9
GOMP, Gompertz function; VONB, Von Bertalantffy function; LOGI, logistic function.
A, mature weight; b, growth ratio; k, maturing rate; ti, point of inflection; Wi, body weight at inflection point.