Effects of different sources of carbohydrates on intake, digestibility, chewing, and performance of Holstein dairy cows

Table 6 Milk production and composition of cows fed on three total mixed rations containing three different sources of non-fiber carbohydrates

Item	Treatments¹			SEM	P value
Item	B	BC	BB	SEM	P value
Yield of milk and milk components, kg/d
Milk	25.11	25.50	25.83	0.653	0.062
3.5% FCM	21.69	22.43	22.69	0.645	0.070
Fat	0.86^b	0.90^a	0.91^a	0.033	0.013
Protein	0.81^a	0.80^b	0.80^b	0.025	0.021
Lactose	1.17	1.20	1.16	0.020	0.062
Total solid	3.47	3.42	3.57	0.060	0.076
Milk composition, %
Fat	3.43^b	3.55^b	3.63^a	0.087	<0.001
Protein	3.23^a	3.15^b	3.10^b	0.030	0.001
Lactose	4.67	4.69	4.66	0.045	0.058
Total solid	11.93	11.89	12.01	0.098	0.060

^{a, b}Means within a row with different subscripts differ (P < 0.05).
¹Treatments were diets containing barley + basal diet (B), barley and corn + basal diet (BC), and barley and beet pulp + basal diet (BB).

ISSN: 2049-1891