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Table 2 Feed intake, milk production, and milk composition of cows fed the control diet or the control diet supplemented with green tea extract (GTE) in average over weeks 2 to 7 of lactation1

From: Effects of supplementation of green tea extract on the milk performance of peripartal dairy cows and the expression of stress response genes in the liver

 

Week 2 to week 7

 

P-value

Variable

Control

GTE

SEM

GTE

Week

GTE × week

Parity

DMI, kg/d

20.2

19.8

0.65

0.67

<  0.001

0.06

0.45

Net energy intake, MJ/d

141

138

4.5

0.67

<  0.001

0.06

0.45

Energy balance, MJ NEL/d

- 45.1

- 35.0

7.0

0.06

<  0.001

0.72

0.44

Milk yield, kg/d

46.1

43.9

1.50

0.17

<  0.001

0.21

0.70

ECM2, kg/d

46.6a

40.7b

1.68

0.002

0.08

0.91

0.53

Feed efficiency, kg ECM/kg DMI

2.36a

2.11b

0.12

0.010

<  0.001

0.09

0.47

Fat, %

4.29a

3.68b

0.18

<  0.001

<  0.001

0.003

0.89

Protein, %

3.05

3.08

0.07

0.92

<  0.001

0.02

0.54

Lactose, %

4.83a

4.75b

0.03

0.026

0.015

0.34

0.44

Fat, kg/d

1.96a

1.58b

0.10

<  0.001

0.07

0.13

0.74

Protein, kg/d

1.40

1.34

0.05

0.16

0.36

0.031

0.33

  1. 1Values are least square means, n = 15 for each group
  2. 2ECM, energy corrected milk, adjusted to 4% fat and 3.4% protein
  3. a,b Means with different superscripts differ significantly (P < 0.05)
  4. DMI, dry matter intake; SEM, standard error of means
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Journal of Animal Science and Biotechnology

ISSN: 2049-1891