. 2023 Aug 22;101:skad279. doi: 10.1093/jas/skad279

Table 4.

Effects of Zn sources on growth performance of meat ducks

Items	Dietary treatment¹			P-value
Items	CON	ZnSO₄	Zn-Gly	P-value
BW, g
1 d	55.94 ± 0.21	56.17 ± 0.19	56.15 ± 0.22	0.688
14 d	743.96 ± 11.16^b	793.33 ± 13.22^a	819.58 ± 8.50^a	<0.001
35 d	2,523.33 ± 42.78^b	2,643.33 ± 40.87^b	2,827.26 ± 45.13^a	<0.001
ADG, g
1 to 14 d	49.14 ± 0.79^b	52.66 ± 0.94^a	54.53 ± 0.61^a	<0.001
15 to 35 d	79.67 ± 1.92^b	82.70 ± 1.69^b	89.96 ± 2.31^a	0.008
1 to 35 d	71.87 ± 1.22^b	75.29 ± 1.17^b	80.55 ± 1.29^a	<0.001
ADFI, g
1 to 14 d	72.69 ± 1.60	71.72 ± 1.04	74.98 ± 0.78	0.174
15 to 35 d	162.56 ± 2.50^b	170.52 ± 2.17^b	179.59 ± 2.55^a	<0.001
1 to 35 d	139.37 ± 2.37^b	145.73 ± 1.89^a	151.00 ± 3.29^a	0.021
F/G, (g/g)
1 to 14 d	1.48 ± 0.04^a	1.36 ± 0.03^b	1.38 ± 0.02^b	0.014
15 to 35 d	2.04 ± 0.03	2.06 ± 0.04	1.98 ± 0.04	0.283
1 to 35 d	1.94 ± 0.01	1.94 ± 0.01	1.91 ± 0.02	0.304

¹Dietary treatments were as follow: (1) control group (CON): basal diet; (2) ZnSO₄ group (ZnSO₄): CON + 70 mg Zn/kg form Zn-Gly; (3) Zn-Gly group (Zn-Gly): CON + 70 mg Zn/kg from Zn-Gly.

^a,bMeans in the same row with different superscripts differ significantly (P < 0.05).

Data represent mean values of six ducks per treatment.

BW, body weight; ADG, average daily gain; ADFI, average daily feed intake; F/G, feed to gain ratio.