Table 4.

Characteristics of LH pulsatility^A among prepartum dietary treatments

	Week 1B			Week 2B			P
	Control	Canola	Sunflower	Control	Canola	Sunflower	TrtC	Trt*wkD
Cows (n)	5	5	5	6	5	5
LH Mean	0.25 ± 0.14	0.25 ± 0.15	0.28 ± 0.13	0.24 ± 0.14	0.54 ± 0.14	0.28 ± 0.14	0.53	0.51
LH Min	0.11 ± 0.06	0.10 ± 0.06	0.09 ± 0.05	0.11 ± 0.07	0.16 ± 0.07	0.10 ± 0.07	0.83	0.92
LH Max	0.62 ± 0.39	0.63 ± 0.42	1.27 ± 0.37	0.61 ± 0.39	1.49 ± 0.39	0.69 ± 0.39	0.74	0.87
Frequency	3.91 ± 0.65	4.15 ± 0.69	4.75 ± 0.60	3.45 ± 0.63	4.95 ± 0.63	4.25 ± 0.63	0.30	0.55
AmplitudeE	0.38 ± 0.10	0.39 ± 0.10	0.44 ± 0.09	0.33 ± 0.09	0.52 ± 0.09	0.36 ± 0.09	0.61	0.54

^ABlood samples were collected every 15 min for 6 h

^BWeek 1: First week postpartum; Week 2: Second week postpartum; ^CTrt: Dietary treatment; ^Dwk: Postpartum week; ^EThe amplitude of LH pulses is defined as the height from the preceding nadir to maximum height