Sows and gilts that are served from
mid-September to late October may suffer from infertility problems including delayed
oestrus, increased returns and abortions. Predisposing factors include sows
being weaned in poorer condition, warm days, cool nights and decreasing day
lengths. There are some things you can do to minimise the risk:
• Minimise draughts and ensure any cracks in ceilings
and around doors are sealed
• Increase the amount of bedding being used
• Feed sows and gilts to body condition
• Re-instate the winter feed curve
• Provide 14 to 16 hours of light per day, of a minimum
of 200 lux, from the beginning of August. Install a light timer, consider
introducing more lights into dark houses and wash existing bulbs. Whitewashing walls/tents
will also reflect light
• Provide more physical boar contact pre- and
post-service to provide ongoing support for the maintenance of pregnancy and to
detect cycling sows.
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