Table 2 Milk yield in treated (N = 6) and control group (N = 3) along the study.

From: Tracing recombinant bovine somatotropin ab(use) through transcriptomics: the potential of bovine somatic cells in a multi-dose longitudinal study

 

Milk yield (mean kg/day)

Days of study

Months in lactation (mean)

rbST (N = 6)

Control (N = 3)

Production difference (%)

rbST

Control

Cycle 0

40.41 ± 6.21**

33.94 ± 12.43

19.28 ± 4.96

−18 to 0

2.0

2.5

Cycle 1

40.53 ± 6.68**

35.43 ± 9.85

14.97 ± 7.14

1 to14

2.5

3.0

Cycle 2

42.22 ± 6.25**

37.38 ± 8.87

13.05 ± 4.99

15 to 28

3.0

3.5

Cycle 3

42.31 ± 5.84**

37.87 ± 8.01

11.80 ± 4.58

29 to 42

3.5

4.0

Cycle 4

38.49 ± 8.18*

35.00 ± 7.08

10.15 ± 6.45

43 to 57

4.0

4.5

Cycle 5

37.21 ± 8.27*

34.67 ± 6.65

7.38 ± 4.51

58 to 70

4.5

5.0

Cycle 6

35.00 ± 6.89

33.24 ± 4.73

5.44 ± 6.64

71 to 84

5.0

5.5

Cycle 7

35.09 ± 9.20***

28.43 ± 6.78

24.06 ± 8.99

85 to 98

5.5

6.0

Cycle 8

32.88 ± 7.92***

27.46 ± 4.59

19.89 ± 7.11

99 to 112

6.0

6.5

Cycle 9

36.13 ± 7.39***

29.18 ± 3.30

24.10 ± 6.04

113 to 127

6.5

7.0

Cycle 10

37.14 ± 6.29***

28.39 ± 2.83

30.99 ± 4.11

128 to 140

7.0

7.5

Cycle 11

34.70 ± 6.07***

27.42 ± 2.47

26.70 ± 7.35

141 to 154

7.5

8.0

Cycle 12

32.06 ± 5.50***

22.60 ± 6.86

43.26 ± 15.02

155 to 168

8.0

8.5

Cycle 13

32.31 ± 7.17***

24.75 ± 4.96

30.52 ± 10.56

169 to 182

8.5

9.0

Cycle 14

28.38 ± 6.55**

24.10 ± 5.39

18.22 ± 5.93

183 to 196

9.5

10.0

Cycle 15

29.82 ± 4.90***

25.91 ± 3.80

15.67 ± 9.77

196 to 209

10

10.5

Cycle 16

28.37 ± 4.85***

24.12 ± 5.50

13.03 ± 6.94

209 to 222

10.5

11

  1. Data was divided in cycles based in rbST administration cycles of two weeks. The mean milk production of each cycle was calculated. The day 0 of study is the day of the first rbST dose administration. Cycle 6, 14, 15, 16 has no administration of rbST and the last day of the cycle correspond with the last sampling for transcriptomic assays. The test-T was used to compare the milk yield in each cycle between treated and control group.
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