產次別組

Parity group

胎數

Litters

出生窩仔數

Litter size at birth

出生活頭數Number born alive

出生存活率,％

Survival rate at birth

離乳活頭數

Litter size at weaning

離乳存活率,％

Survival rate at weaning

1- 5

4387

6.85±.03 ^a

6.48±.04 ^a

93.3±0.3 ^a

70.2±0.5 ^a

6-10

1832

6.69±.05 ^b

6.33±.06 ^b

93.3±0.5 ^a

70.6±0.8 ^a

11-15

758

6.36±.09 ^c

6.05±.10 ^c

94.3±0.8 ^a

67.8±1.2 ^a

16-20

301

6.11±.14 ^c

5.78±.16 ^c

93.6±1.2 ^a

67.9±1.9 ^a

21-29

97

5.08±.25 ^d

4.84±.28 ^d

93.6±2.2 ^a

64.8±3.5 ^a

整體

Overall

7375

6.71

(37.1 %) ^e

6.35

(44.0%) ^e

93.4

(24.0%) ^e

4.80

(58.8%) ^e

69.9

(49.4%)^e