Table 3.

Changes in growth performance of Muscovy ducks (n = 6/group).

Items	Control group	Group Ⅰ	Group Ⅱ	P value
Body weight, g
16 d	267.33 ± 9.50	269.33 ± 8.39	277.67 ± 4.62	0.28
21 d	386.69 ± 19.54	375.64 ± 12.79	383.63 ± 18.15	0.59
42 d	1089.25 ± 49.16	1080.48 ± 28.78	1087.88 ± 62.47	0.91
70 d	2220.00 ± 82.46	2263.00 ± 42.14	2271.88 ± 52.98	0.22
Average daily gain, g
16–21 d	21.68 ± 4.36	22.38 ± 3.87	22.30 ± 5.50	0.98
21–42 d	31.95 ± 0.54	34.49 ± 0.78	34.48 ± 0.87	P < 0.01
42–70 d	40.06 ± 3.25	42.16 ± 1.95	42.47 ± 3.28	0.22
16–70 d	34.50 ± 3.50Bb	37.01 ± 3.33Aa	36.80 ± 3.32Aa	P < 0.01
Average daily feed intake, g
16–21 d	43.22 ± 2.65	45.76 ± 0.44	45.21 ± 0.89	0.21
21–42 d	89.11 ± 1.05	89.45 ± 1.41	91.33 ± 1.03	0.76
42–70 d	160.95 ± 1.77	164.84 ± 2.84	161.57 ± 1.50	0.91
16–70 d	120.68 ± 2.37	123.06 ± 0.89	122.06 ± 1.01	0.13
Feed conversion ratio
16–21 d	2.05 ± 0.40	2.08 ± 0.34	2.12 ± 0.59	0.98
21–42 d	2.79 ± 0.04	2.59 ± 0.06	2.65 ± 0.07	0.02
42–70 d	3.94 ± 0.22a	3.71 ± 0.03ab	3.59 ± 0.03b	0.04
16–70 d	3.49 ± 0.12Aa	3.33 ± 0.06Bb	3.32 ± 0.02Bb	0.05

Note: In the same row, no letter or the same letter superscripts: no significant difference (P > 0.05). Different small letter superscripts: significant difference (P < 0.05). Different capital letter superscripts: significant difference (P < 0.01).