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Table 2 FARM B. Reproductive performance before, during and after the occurrence of riboflavin (vit B2) deficiency (during the monitoring period of 18 months, from January 2021 to June 2022) following treatment

From: Premature farrowing and stillbirths in two organic sow farms due to riboflavin deficiency

Parameter

Before vit. B2 deficiency*

During 2020

Monitoring period

Average litter size (Total born piglets)

16.1

17.3

% of live born

88%

87%

% of stillborn piglets

12%

13%

Pre-weaning piglet mortality (%)

40%

20%

Number of weaned piglets per sow/year

17

24.12

% of sows showing return to oestrus

20%

18%

  1. *No historical data about reproductive performances. Farm B was a newly established farm