TABLE 2.

Body weight in generations 0 and 1 families of Leizhou Black Duck

Weeks	Gender	Generation 0		Generation 1
		Weight (g)	Coefficient of variation (%)	Weight (g)	Coefficient of variation (%)
0	Male	41.90 ± 2.75aC	6.56	40.57 ± 3.68aD	9.07
	Female	42.16 ± 3.19aC	7.57	40.44 ± 3.10aD	7.67
2	Male	209.62 ± 39.17AC	18.67	200.91 ± 32.05AD	15.95
	Female	221.39 ± 43.80Bc	19.78	220.00 ± 35.19Bc	16.00
4	Male	426.35 ± 43.87ac	10.29	435.70 ± 47.14ad	10.82
	Female	433.66 ± 40.03ac	9.23	438.40 ± 44.62ac	10.18
6	Male	572.93 ± 77.00ac	13.44	591.94 ± 63.17ad	10.67
	Female	580.78 ± 103.65aC	17.85	600.08 ± 61.30aD	10.22
8	Male	842.95 ± 31.73AC	3.76	872.31 ± 40.68AD	4.66
	Female	781.73 ± 36.43BC	4.66	837.69 ± 45.07BD	5.38
10	Male	966.11 ± 34.10AC	3.53	1033.00 ± 52.43AD	5.08
	Female	909.15 ± 35.97BC	3.96	1007.32 ± 46.48BD	4.61
12	Male	1,188.64 ± 33.59Ac	2.83	1156.73 ± 32.58Ac	2.82
	Female	1100.33 ± 36.29BC	3.30	1152.13 ± 43.00BD	3.73
14	Male	1255.91 ± 33.54AC	2.67	1284.45 ± 39.50AD	3.08
	Female	1205.00 ± 36.35BC	2.77	1239.73 ± 54.39BD	4.39
16	Male	1258.69 ± 34.61AC	2.75	1333.52 ± 45.72AD	3.43
	Female	1235.00 ± 37.00BC	2.19	1261.96 ± 45.52BD	3.61

The comparison between different genders of the same generation is indicated by the letters a and b. The comparison between the same gender of different generations is indicated by letters c and d. The same lowercase letters in the same column indicate no significant difference (p > .05) and different lowercase letters indicate a significant difference (p < .05), and the different upper case letters indicate that the difference is significant (p < .01).