Table 2 Reproductive performance between pre- and during-ASF-outbreak in observed breeding herd per each productive week.

From: An African swine fever vaccine-like variant with multiple gene deletions caused reproductive failure in a Vietnamese breeding herd

Parameters

Pre-outbreak* (mean ± SD)

During-outbreak** (mean ± SD)

P-value

Farrowing rate (%)

91.42 ± 4.67

62.71 ± 15.45

< 0.0001

Total born (piglets)

13.16 ± 0.46

11.57 ± 1.23

< 0.0001

Birth weight (kg/piglet)

1.26 ± 0.04

1.15 ± 0.08

< 0.0001

Born alive/litter (piglets)

11.66 ± 0.34

8.93 ± 1.55

< 0.0001

Weaned pig/litter (pigs)

10.81 ± 0.61

6.08 ± 1.21

< 0.0001

Weaning weight (kg/piglet)

6.64 ± 0.32

6.37 ± 0.15

0.0031

Pre-weaning mortality rate (%)

7.33 ± 3.98

34.16 ± 12.93

< 0.0001

  1. The Mann–Whitney U test was performed to compare two distinct periods.
  2. *Pre-outbreak period lasts for 34 weeks.
  3. **During-outbreak period lasts for 10 weeks.
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