A prepartum diet supplemented with oilseeds high in oleic or linoleic acid reduced GnRH-induced LH release in dairy cows during second week postpartum

Table 1 Ingredient and nutrient composition of prepartum TMR diets and fatty acid content of canola and sunflower seed

	Prepartum diets
	Control	Canola	Sunflower
Ingredient composition (% DM)
Barley silage	60.0	60.0	60.0
Alfalfa hay	10.0	10.0	10.0
Ground barley	10.0	10.0	10.0
Soybean hulls	10.0	6.2	3.4
Canola meal	5.0	0.8	3.6
Canola seed^A	0.0	8.0	0.0
Sunflower seed^B	0.0	0.0	8.0
Vitamin / mineral supplements	5.0	5.0	5.0
Nutrient Composition (% DM)
Crude protein	14.2	13.8	14.4
NDF	42.0	41.3	40.1
Crude fat	2.7	7.4	6.2
Net energy for lactation (Mcal/kg)	1.4	1.6	1.5

^ATotal fat: 45.2 %; Fatty acid content (% of total fat): 61.2 % oleic, 18.8 % linoleic, 9.6 % linolenic, 10.4 % other
^BTotal fat, 43.3 %; Fatty acid content (% of total fat): 12.5 % oleic, 73.1 % linoleic, 0.7 % linolenic, 13.7 % other

ISSN: 1477-7827