Table 2 Effects of xylooligosaccharides (XOS), exogenous enzyme (EXE) and their combinations on dry matter intake, milk production, and feed efficiency in lactating Jersey cows

BW, kg

458 ± 79.1

446 ± 62.0

463 ± 86.1

447 ± 59.7

0.16

DM intake, kg/d

17.5 ± 1.71

17.9 ± 1.59

17.7 ± 1.82

17.4 ± 2.37

0.06

Milk yield, kg/d

18.4 ± 0.41^b

19.6 ± 1.06^a

18.9 ± 0.75^a

19.4 ± 1.10^a

 < 0.01

ECM², kg/d

22.4 ± 1.52^c

24.6 ± 1.38^a

23.4 ± 0.66^b

23.2 ± 1.42^b

< 0.01

True protein, %

3.87 ± 0.106^b

4.14 ± 0.227^a

4.07 ± 0.219^a

4.05 ± 0.502^a

0.04

Fat, %

5.43 ± 1.142^b

5.56 ± 2.073^a

5.57 ± 1.471^a

5.52 ± 1.511^a

0.02

Lactose, %

3.9 ± 0.48^b

4.1 ± 0.95^a

4.2 ± 0.65^a

4.0 ± 0.44^a

0.04

MUN, mg/dL

15.8 ± 1.34

16.2 ± 2.15

15.0 ± 1.37

16.0 ± 2.11

0.09

Milk yield/DM intake

1.08 ± 0.099^b

1.12 ± 0.251^a

1.07 ± 0.228^b

1.11 ± 0.248^a

0.040

ECM/DM intake

1.28 ± 0.164^c

1.37 ± 0.173^a

1.31 ± 0.306^b

1.32 ± 0.131^b

< 0.01