Table 3.

Effects of feeding Mn preconditioning diet for the first 96 h post-hatch and replacing manganese sulfate with Bioplex Mn on growth performance of broiler chicks.

	Weight gain g/bird		Feed intake g/bird		Feed efficiency g/f
Item	1 to 14 D	1 to 21 D	1 to 14 D	1 to 21 D	1 to 14 D	1 to 21 D
Mn preconditioning period (MnPP)
MnPD1 (Mn preconditioning diet)	359	736	551	1,166	0.656	0.632
NPCD (non-preconditioning diet)	363	745	541	1,174	0.671	0.636
Mn source
Basal diet3	363	734	550	1,166	0.730	0.632
Manganese sulfate2	364	744	546	1,168	0.670	0.637
Bioplex Mn2	359	738	545	1,171	0.660	0.631
Mn level (mg/kg)2
12	366	753a	547	1,173	0.667	0.643
60	357	728b	544	1,167	0.660	0.625
Interaction of Mn level×MnPP
12 mg/kg/MnPD	367	759a	550	1,174	0.668	0.647
12 mg/kg/NPCD	362	748a	544	1,172	0.667	0.640
60 mg/kg/MnPD	352	714b	545	1,157	0.645	0.617
60 mg/kg/NPCD	364	743a,b	542	1,176	0.676	0.633
P-values
MnPP	0.325	0.562	0.612	0.526	0.212	0.665
Mn source	0.193	0.483	0.888	0.827	0.325	0.498
Mn level	0.092	0.004	0.667	0.643	0.536	0.065
MnPP × source	0.772	0.508	0.303	0.085	0.385	0.383
MnPP × level	0.055	0.020	0.828	0.416	0.178	0.243
Mn source × level	0.971	0.390	0.736	0.777	0.919	0.735
MnPP x source × level	0.055	0.008	0.198	0.447	0.766	0.167
SEM	2.582	4.698	4.110	5.966	0.006	0.004

¹No supplemental Mn in the basal diet fed to chicks for 96 h.

²Data represent means of 24 replicates cages (n = 6).

³Data present means of 12 replicates cages (n = 6).

^a,bMeans within the same column within the same factor with any identical letters are not significantly different at P ≤ 0.05 by Tukey's HSD.