. 2023 Dec 4;16:395–408. doi: 10.1016/j.aninu.2023.11.006

Table 3.

Performance of white laying hens fed different sources and levels of Zn, Mn, and Cu from 78 to 98 weeks of age.

Item	ADFI, g/hen	Egg production, %	Egg weight, g	Egg mass, g/hen per day	FCR, g:g	FCD, kg/dozen eggs
ZMCGly source	106.6	75.9^B	68.6^B	52.1^B	2.017^A	1.656
ZMCAA source	107.0	80.4^A	69.5^A	55.4^A	1.935^B	1.601
Low level	107.6	78.1	69.0	53.8	2.007^a	1.586^b
High level	106.0	78.2	69.0	53.5	1.931^b	1.657^a
P-value
Source	0.578	0.014	0.024	0.007	0.049	0.145
Level	0.082	0.963	0.861	0.993	0.050	0.032
Source × Level	0.701	0.286	0.338	0.497	0.439	0.584
SEM	0.46	0.92	0.20	0.63	0.0192	0.0161

ADFI = average daily feed intake; FCR = feed conversion ratio for egg mass; FCD = feed conversion for dozen eggs; SEM = standard error of the mean.

ZMCGly = Zn, Mn, and Cu bis-glycinates.

ZMCAA = Zn, Mn, and Cu amino acid complexed minerals.

Low level = 20, 20, and 3.5 mg of Zn, Mn, and Cu per kilogram of diet, respectively.

High level = 40, 40, and 7 mg of Zn, Mn, and Cu per kilogram of diet, respectively.

^A,B Within a column, values with different letters differ significantly from the source by Tukey’s test (P < 0.05). ^a,b Within a column, values with different letters differ significantly from the level by Tukey's test (P < 0.05).