Table 6.

Effects of feeding medium chain fatty acid on blood immune globulin of the pre-calving, early lactation, and peak lactation cows².

Variable	Treatment1		SEM	P-value
	CON	MCFA		Treatment	Time	Treatment×Time
Pre-calving
Ig3-G (mg/mL)	7.53	7.56	0.170	0.96	0.15	0.21
Ig-A (μg/mL)	93.61	91.24	1.450	0.41	0.10	0.27
Ig-M (mg/mL)	0.83	0.78	0.013	0.03	0.03	0.09
Early lactation
Ig-G (mg/mL)	8.12	8.30	0.209	0.66	0.01	0.70
Ig-A (μg/mL)	102.74	99.79	1.327	0.24	0.22	0.03
Ig-M (mg/mL)	0.80	0.82	0.017	0.53	0.02	0.03
Peak lactation
Ig-G (mg/mL)	8.24	8.08	0.191	0.56	<0.01	0.26
Ig-A (μg/mL)	97.79	94.70	1.797	0.41	0.37	0.30
Ig-M (mg/mL)	0.86	0.82	0.017	0.34	0.71	0.73

SEM, standard error of mean.

¹CON, control treatment, basic diet with no medium chain fatty acids, n = 9. MCFA, MCFA treatment, basic diet and medium chain fatty acids 20 g/d, n = 9.

²Pre-calving, from 21 d before calving to calving, Early lactation, from 1 d to 28 d after calving, Peak lactation,= from 29 d to 70 d after calving.

³Ig, Immune globulin.