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Table 3 Effect of arginine infusion on the feed intake and production parameters of lactating dairy cows

From: Jugular arginine supplementation increases lactation performance and nitrogen utilization efficiency in lactating dairy cows

Items

Treatmentsc

SEM

P-value

Control

Arg group

Ala group

Feed intake, kg DM/d

21.69

22.33

22.82

0.90

0.48

Milk yield, kg/d

25.45b

28.16a

25.95b

0.92

0.03

Milk fat, %

4.42

4.19

4.09

0.14

0.09

Milk protein, %

3.04b

3.17a

3.11b

0.03

< 0.01

Solids nonfat, %

8.81

8.73

8.75

0.21

0.93

Milk fat yield, g/d

1125.88

1179.80

1064.26

61.92

0.22

Milk protein yield, g/d

774.97b

893.95a

805.80b

31.38

0.01

Solids nonfat yield, g/d

2241.28

2458.33

2271.29

101.66

0.11

Milk efficiencyd

1.12b

1.30a

1.17b

0.06

0.03

  1. a,bDifferent superscripts within a column represent significant differences (P < 0.05)
  2. cControl, saline; Arg group, saline + 9.42 g/L L-Arg; Ala group: saline + 19.31 g/L L-Ala
  3. dMilk efficiency: Milk yield/Feed intake