Concentration measurements can fluctuate as ventilation changes. Often, ventilation is higher during the day when workers are present, than in the night, when it is cooler.
pen of boars
Missouri agriculture groups respond to Senate Bill 391 lawsuit
The boot- and shoe-changing zone is an area that Jean-Pierre Vaillancourt said needs more attention from management to make sure that the separation between clean and dirty is maintained.
African Swine Fever and you: What’s up with that?
Nutrient management