Avian Influenza Thoughts

Driving to a meeting this morning I started thinking about the impact of the on-going avian influenza outbreak in the Midwest. Unlike the PEDv introduction into the US swine industry, avian influenza results in euthanasia of all of the birds at a site. With PEDv we had death loss, but the vast majority of the sows survived an outbreak and producers were able to wean pigs in 3-4 weeks. Read More...

Does the pig do better with constant vs varying temperatures?

Typical ventilation controllers turn devices (heaters or fans) on and off in response to temperature changes as detected by one or more temperature probes suspended in the animal facility. Current ventilation control strategies as implemented by almost all ventilation controllers installed in production facilities contribute to temperature variation.  Read More...

How tunnel ventilated barns really work in hot weather

Many of the readers of this blog have tunnel ventilated wean-finish or grow-finish facilities. Others have seen these type of facilities and have questions about how they function in terms of meeting the heat removal needs of growing pigs. A common question I get asked – how much temperature variation is ‘normal’ for these facilities? Read More...

Spring in Minnesota

Spring doesn’t officially arrive in southern Minnesota until tomorrow evening, but signs of it are everywhere. I saw pits being pumped in Northwest Iowa this afternoon with dust being generated in the soybean stubble where they were injecting the manure. I’ve also seen cattle feedlots spreading manure and I even had a report of small grains being seeding in this area of Minnesota yesterday. Read More...