Light (I): Seasonal infertility

This is the first of 4 pieces on light by pig farm advisor, John Gadd. In this article Gadd looks at the correct levels of light for sows; before, at and after breeding times. I first cut my teeth 45 years ago on the problem of light levels for breeding sows. Adequate light levels are very poorly understood, even today. I usually follow up a visit with a quick phone call or note to ask whether things have improved, as you can learn so much from such advisory checks. What doesn’t work is as imp