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Table 6 Phenotypic correlations among parameters of lactation curve in different season of calving (autumn = upper diagonal, winter = lower diagonal)

From: Effects of season and age at first calving on genetic and phenotypic characteristics of lactation curve parameters in Holstein cows

 

a

b

c

Peak time

Peak yield

Part1

Part2

Part3

Milk 305

Persis1

Persis2

a

 

−0.86

−0.60

−0.45

0.19

0.39

0.34

0.19

0.32

−0.31

0.07

b

−0.87

 

0.77

0.36

0.22

0.01

0.12

−0.14

0.00 ns

0.22

−0.22

c

−0.60

0.77

 

−0.19

0.10

−0.01

−0.19

−0.53

−0.28

−0.43

−0.75

Peak time

−0.48

0.38

−0.17

 

0.14

0.00 ns

0.40

0.51

0.34

0.86

0.74

Peak yield

0.24

0.16

0.08

0.09

 

0.97

0.92

0.71

0.90

0.15

0.04

Part1

0.44

−0.04

−0.03

−0.05

0.97

 

0.88

0.70

0.98

0.02

0.00 ns

Part2

0.37

0.06

−0.23

0.37

0.90

0.87

 

0.91

0.93

0.48

0.41

Part3

0.25

−0.20

−0.57

0.48

0.68

0.67

0.91

 

0.90

0.62

0.69

Milk305

0.37

−0.07

−0.32

0.30

0.89

0.98

0.93

0.91

 

0.42

0.42

Persis1

−0.30

0.21

−0.43

0.86

0.09

−0.02

0.45

0.62

0.40

 

0.88

Persis2

0.07

−0.22

−0.75

0.72

0.02

−0.01 ns

0.42

0.71

0.42

0.89

Â