Table 7.

Effects of late gestation supplementation of Ca salts of saturated/monounsaturated fatty acids (CON) or polyunsaturated fatty acids (PUFA) on fatty acid profile of milk fat

Item	CONa	PUFAb	SEM	P-value
Fatty acid, % of total fatty acids
C4:0	3.76	3.73	0.133	0.80
C6:0	1.64	1.60	0.064	0.52
C8:0	0.97	0.93	0.057	0.53
C10:0	2.06	1.97	0.170	0.64
C12:0	2.37	2.32	0.216	0.85
C14:0	8.05	7.74	0.446	0.51
C15:0	1.01	1.07	0.043	0.24
C16:0c	22.7	21.6	–	0.19
C16:1c9	1.41	1.40	0.082	0.88
C17:0	0.65	0.66	0.025	0.52
C18:0	11.38	11.31	0.799	0.93
C18:1 t4	0.04	0.04	0.003	0.62
C18:1 t5	0.03	0.03	0.003	0.76
C18:1 t6, 8	0.47	0.49	0.024	0.44
C18:1 t9	0.36	0.37	0.015	0.47
C18:1 t11	4.62	4.70	0.220	0.72
C18:1 t12	0.39	0.41	0.020	0.58
C18:1c9	23.83	24.65	1.099	0.49
C18:1c11	0.42	0.40	0.027	0.58
C18:1c12	0.12	0.12	0.007	0.84
C18:1 t16	0.32	0.32	0.012	0.59
C18:2 t11, c15	0.11	0.09	0.018	0.52
C18:2n-6	2.58	2.72	0.140	0.37
C20:0	0.17	0.17	0.014	0.76
C20:1c11	0.05	0.05	0.003	0.66
C18:3n-3	0.50	0.52	0.030	0.36
C18:2c9, t11	2.22	2.28	0.140	0.66
C20:2n-6	0.02	0.02	0.002	0.48
C22:0	0.06	0.06	0.006	0.69
C20:3n-6	0.08	0.08	0.006	0.16
C20:4n-6	0.13	0.12	0.006	0.15
C20:5n-3	0.04	0.04	0.004	0.52
C22:5n-3	0.08	0.08	0.005	0.86
C22:6n-3	0.01	0.02	0.004	0.02
Total n-3	0.61	0.66	0.033	0.18
Total n-6	2.82	2.93	0.141	0.46

^aCON = cows were supplemented soybean hulls mixed with 155 g DM/cow/d EnerGII (Virtus Nutrition LLC, Corcoran, CA) for 77 ± 6 d prepartum

^bPUFA = cows were supplemented soybean hulls mixed with 80 g DM/cow/d Strata + 80 g DM/cow/d Prequel (Virtus Nutrition LLC, Corcoran, CA) for 77 ± 6 d prepartum

^cData were transformed for statistical analysis because of non-normal distribution; Means are presented after back-transformation