Effect of reduced energy density of close-up diets on dry matter intake, lactation performance and energy balance in multiparous Holstein cows

Table 5 Effect of energy density of close-up dry period diets on EB in Holstein cows

Item	Dietary treatment¹			SEM	P-value
Item	HD	MD	LD	SEM	Diet	Time	Interaction
EB, MJ/day
Prepartum
Wk −3 to −1	30.1^a	15.9^b	1.3^c	0.94	< 0.001	< 0.001	0.34
Wk −3	42.3^a	26.8^b	7.5^c	3.22	< 0.001
Wk −2	37.2^a	20.9^b	3.3^c	2.93	< 0.001
Wk −1	15.9^a	6.7^b	−8.4^c	2.34	< 0.001
Postpartum
Wk 1 to 4	−45.2	−46.0	−43.1	2.2	0.66	0.09	0.99
Wk 1	−43.5	−39.7	−31.0	4.27	0.49
Wk 2	−41.0	−40.2	−38.9	4.06	0.98
Wk 3	−51.9	−53.1	−52.3	4.48	0.99
Wk 4	−47.3	−47.7	−43.9	3.05	0.86
EB, % of requirement
Prepartum
Wk −3 to −1	149.8	126.2	101.1
Wk −1	125.6	109.7	87.4
Postpartum
Wk 1 to 4	72.7	73.1	75.2
Wk 1	72.7	73.5	79.2

¹HD high energy density diet, MD middle energy density diet, LD, low energy density diet.
^{a, b, c}Values within a row with different superscripts differ significantly at P < 0.05.

ISSN: 2049-1891