Table 2

Performance of lactating dairy cows receiving rumen-protected supplements of conjugated linoleic acid (CLA)^1,2 (J Dairy Sci 2004, 87:3010–3016).

Treatment

Variable

Control

AP-CLA

LE-CLA

SEM

P³

DMI, kg/d

30.6

31.6

30.4

0.9

0.50

Milk, kg/d

40.5

42.6

42.7

3.5

0.32

Milk fat

%

3.23^a

2.37^b

2.34^b

0.15

< 0.001

kg/d

1.272

1.004^b

0.992^b

0.079

< 0.001

Milk protein

%

2.55

2.51

2.58

0.12

0.07

kg/d

1.001^b

1.063^a

1.086

0.023

0.02

^a,bMeans within a row with different superscripts differ.

¹Supplements were amide-protected CLA (AP-CLA) and lipid-encapsulated CLA (LE-CLA).

²Values represent an average of day 6 and 7 of supplementation.

³Statistical probability of treatment effects.

Moon et al. Nutrition & Metabolism 2008 5:16   doi:10.1186/1743-7075-5-16