Genetic variances, heritabilities and maternal effects on body weight, breast meat yield, meat quality traits and the shape of the growth curve in turkey birds

Table 1 Descriptive statistics, including the estimates for the significant fixed effects (Sex and Hatch).

Traits(units)	N	Minimum	Maximum	LS Mean	RSD	Sex¹	Hatch²
BW01(Kg)	1416	0.04	0.07	0.06	0.00	0.00	0.02***
BW17(Kg)	1281	0.08	0.60	0.35	0.05	0.21***	0.11***
BW40(Kg)	1226	0.52	2.32	1.40	0.17	0.66***	0.37***
BW60(Kg)	1103	1.50	4.96	3.18	0.37	1.27***	0.65***
BW80(Kg)	1009	3.04	8.50	5.57	0.59	2.22***	1.64***
BW120(Kg)	878	4.54	15.90	10.49	1.01	5.00***	1.48***
PBM (%)	919	9.10	13.40	11.19	0.71	-0.20***	1.17***
BrL(mm)	1198	149.00	249.00	196.35	14.08	49.44***	23.19***
BrW(mm)	1198	107.00	181.50	135.93	7.91	26.70***	21.80***
PDL(%)	1028	2.21	14.10	5.11	1.14	0.94***	1.36***
pHu	1055	5.22	6.08	5.73	0.09	0.03***	0.49***
L*	1083	40.30	53.60	45.94	1.72	1.03***	2.65***
a*	1083	1.30	9.20	5.25	0.97	0.06	1.06***
b*	1083	0.00	5.60	2.25	0.77	0.51***	0.81***
As _wt (Kg)	867	4.6	20.23	12.39	1.32	6.47***	2.82***
t _mid (day)	867	59.86	112.24	82.82	3.58	6.07***	13.20***
scale(day)	867	12.66	29.15	20.61	1.21	1.86***	5.78***

N = Number of records; minimum = minimum values; maximum = maximum values; LS Mean = least square mean; RSD = residual standard deviation; BW01, BW17, BW40, BW60, BW80, and BW120 are the BW at days 1,17, 40, 60, 80, and 120 of age, respectively; PBM = percentage breast meat at 20 week of age; BrL = breast length at 20 week of age; BrW = breast width at 20 wk of age; PDL = percent drip loss at 20 week of age; pHu = ultimate pH at 20 wk of age; L* = lightness at 20 wk of age; a* = redness at 20 wk of age; b* = yellowness at 20 wk of age; As_wt = upper asymptotic weight (estimated growth curve parameter); t_mid = inflection point at 50% asymptote (estimated growth curve parameter); scale = constant that is proportional to the overall growth rate (estimated growth curve parameter). ¹ = The difference between sexes in the Least square means (LS Means) of the traits. ² = The difference between the maximum and minimum LS Means of the traits with respect to the week of hatch. *P ≤ 0.05, **P ≤ 0.005, ***P ≤ 0.0005

ISSN: 2730-6844