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Table 3 Distribution of atypical lactation curves according to age at first calving

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

Calving month

19

20

21

22

23

24

25

26

27

28

29

30

31

Negative B

25

54

136

431

1481

2865

2751

1891

685

237

99

51

5

Negative B and C

21

39

90

293

983

1814

1737

1153

432

155

74

39

3

Total

46 (16 %)

93 (14 %)

226 (30 %)

724 (28 %)

2464 (25 %)

4679 (22 %)

4488 (22 %)

3044 (23 %)

1117 (24 %)

392 (28 %)

173 (34 %)

90 (40 %)

8 (19 %)