Table 3 Effects of Zn-Gly on growth performance of meat ducks from 15 to 21 d

BW (21 d), g

1,607.70 ± 12.61^a

1,398.46 ± 25.49^c

1,520.60 ± 31.94^b

1,593.60 ± 18.00^ab

1,623.46 ± 17.00^a

 < 0.01

ADG (15–21 d), g

103.54 ± 3.33^a

79.72 ± 4.42^b

95.83 ± 3.01^a

101.11 ± 3.48^a

103.44 ± 2.19^a

0.007

ADFI (15–21 d), g

175.97 ± 2.85

166.39 ± 3.30

172.99 ± 5.27

184.86 ± 2.46

173.06 ± 7.71

0.171

F/G (15–21 d), g/g

1.70 ± 0.01^b

2.09 ± 0.08^a

1.80 ± 0.01^b

1.83 ± 0.05^b

1.67 ± 0.05^b

0.001