Table 1 Indicators related to egg production traits in HEP and LEP

Body weight at 300 days (g)

2836.13±99.60

2880.86±202.43

0.588

Age at first egg (day)

152.00±5.81

161.71±9.46

0.031

Egg number at 300 days

140.36±3.28

56.89±20.25

0.001

Average egg production rate at 300 days (%)

87.15±22.34

35.33±19.30

0.001

Ovarian weight (g)

73.13±18.76

64.46±31.92

0.525

Number of hierarchical follicles

5.63±0.74

4.00±1.26

0.011

Number of pre-hierarchical follicles

 <2mm

0.84±0.29

0.91±0.25

0.605

 2~6mm

2.89±1.28

3.70±0.91

0.199

 2~6mm

3.76±1.86

4.57±2.23

0.456