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Table 2 Mean with SD of production parameters in high and low yielding cows by parity and farm

From: Comparison of rumen bacterial communities in dairy herds of different production

 

Farm 12

Farm 9

Primiparous cows

Multiparous cows

Primiparous cows

Multiparous cows

 

High

Low

High

Low

High

Low

High

Low

(n = 12)

(n = 12)

(n = 12)

(n = 11)

(n = 10)

(n = 9)

(n = 9)

(n = 10)

Days in milk

116

109

125

125

128

113

130

132

Milk yield (kg/d)

48.1

38.6

70.7

52.6

37.2

25.5

41.8

32.1

± 1.3

± 1.2

± 4.3

± 3.3

± 7.1

± 2.7

± 3.4

± 3.4

Fat (%)

3.31

3.34

3.20

3.86

3.64

3.83

3.19

3.86

± 0.57

± 0.61

± 1.25

± 0.90

± 0.36

± 0.62

± 0.48

± 0.67

Protein (%)

2.85

2.94

2.86

3.23

2.91

2.94

2.87

3.03

± 0.22

± 0.20

± 0.27

± 0.28

± 0.22

± 0.30

± 0.23

± 0.23