Table 5 Association days to first service, inter-service interval and number of service per-conception with other variables

Genotype

Local

155 ± 4.86

0.0015

37.4 ± 3.04

0.4025

1.14 ± 0.025

0.555

Crossbred

138 ± 2.06

40.1 ± 1.21

1.15 ± 0.0098

Calving type

PTC

142 ± 3.29

0.3020

43.5 ± 2.54

0.1331

1.11 ± 0.0123

<.0001

FTC

137 ± 3.60

38.6 ± 2.06

1.19 ± 0.0134

Fertility

Normal

89.2 ± 2.56

< 0.0001

25.4 ± 5.75

0.0006

1.07 ± 0.0316

<.0001

Subfertility

167.3 ± 1.85

46.7 ± 1.98

1.27 ± 0.0227

Parity

Prim/Heifer

–

–

37.2 ± 3.23

0.059

1.14 ± 0.026

0.0427

Multiparous

140 ± 1.91

44.4 ± 1.99

1.20 ± 0.018

NSPC

First AI

142 ± 2.67

0.1469

–

<.0001

–

–

Second AI

133 ± 6.11

36.0 ± 1.46

–

–

Third AI

114 ± 16.72

79.1 ± 4.24

–

–

AI Season

Summer

137 ± 3.49

0.7656

35.2 ± 1.99

0.001

1.15 ± 0.0169

0.8676

Spring

141 ± 3.72

34.7 ± 2.18

1.14 ± 0.0183

Winter

142 ± 3.81

45.8 ± 2.18

1.16 ± 0.0184

Autumn

142 ± 4.42

45.6 ± 2.53

1.14 ± 0.0198

Calving Season

Summer

142 ± 4.63

0.5992

41.5 ± 3.09

0.002

1.15 ± 0.0182

0.8784

Spring

144 ± 4.91

45.9 ± 3.27

1.15 ± 0.0187

Winter

137 ± 5.32

47.2 ± 3.62

1.14 ± 0.0195

Autumn

136 ± 4.66

32.2 ± 2.75

1.16 ± 0.0169