Table 2. Growth performance of calves fed egg yolk powder with or without specific chicken egg yolk immunoglobulins (IgY).

Item	Treatment		SEM	P-value
	Control	IgY
BW, kg
Initial	56.79	54.78	1.36	0.310
Final	91.72	96.68	2.16	0.117
DG, kg/d
Total	0.71	0.86	0.03	0.001
Pre-weaning	0.71	0.81	0.04	0.084
Post-weaning	0.74	0.92	0.03	0.023

Values are expressed as least squares mean ± SEM. Control group (n=15), supplemented with nonspecific yolk powder; IgY group (n=15), supplemented with specific IgY against the lipopolysaccharides of Escherichia coli. Total, entire period of experiment (21–70 days of age); pre-weaning period, 21–48 days of age; Post-weaning period, 49–70 days of age. BW, body weight; DG, daily weight gain.