Table 8.

Effects of feeding medium-chain fatty acid on blood bile acid metabolism of early lactation cows².

Variable3 (μ mol/L)	Treatment1		SEM	P-value
	CON	MCFA		Treatment	Time	Treatment ×Time
LCA	0.02	0.02	0.002	0.37	<0.01	<0.01
UDCA	0.017	0.015	0.002	0.50	0.04	0.06
HDCA	0.03a	0.02b	0.002	0.02	0.02	<0.01
CDCA	0.30	0.61	0.118	0.13	0.03	0.03
DCA	1.20	3.47	0.592	0.15	0.05	0.11
HCA	0.05a	0.01b	0.006	<0.01	<0.01	<0.01
CA	18.77	21.04	3.547	0.71	<0.01	0.27
GLCA	0.08	0.08	0.012	0.81	0.11	0.79
GCDCA	0.82	0.71	0.153	0.70	<0.01	0.33
GDCA	2.03	1.90	0.290	0.80	0.01	0.66
GCA	9.30	6.86	1.328	0.28	<0.01	0.29
TCDCA	0.45	0.43	0.096	0.89	0.10	0.13
TCA	5.02	2.74	0.718	0.08	0.08	0.03
TBA	39.98	38.70	5.626	0.89	<0.01	0.76
CA/CDCA	75.35	89.10	20.696	0.75	0.16	0.85

SEM, standard error of mean.

^a-bMeans within a row with unlike superscripts differ (P ≤ 0.05).

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.

²Early lactation, from 1 d to 28 d after calving.

³LCA, lithocholic acid; UDCA, ursodeoxycholic acid; HDCA, hyodeoxycholic acid; CDCA, chenodeoxycholic acid; DCA, deoxycholic acid; HCA, hyocholic acid; CA, cholic acid; GLCA, cholic acid; GCDCA, glycochenodeoxycholic acid; GDCA, glycodeoxycholic acid; GCA, glycocholic acid; TCDCA, taurochenodeoxycholic acid; TCA, taurocholic acid; TBA, total bile acid.