Particle size also affects feed intake. One study showed that by decreasing particle size from 1200 to 600 microns, lactation feed intake was increased by .45 pounds per day, and litter weight was increased by 7.25 pounds. However, producers need to be careful not to grind much below 600 microns. While feed intake and litter weight will still increase slightly, there is a much higher incidence of gastric ulcers. Also, it takes more time and energy to grind feed finer, as well more problems with dust loss and feed bridging.
Water intake is critical in keeping pigs cool.
Not only do they need a clean source of drinking water, it needs to be delivered at the proper rate. A good rule of thumb for sows is that the waterer provides 4 cups of water per minute.