In addition, feed formulation and processing play key roles in the pig's feed intake and amount of feed waste. Healthier pigs generally have higher feed intakes and growth rates. Water intake is positively related to feed intake. Any limitation on water consumption, whether it be the design of the watering device or the quality of the water, will result in some feed intake reduction. Feeder design has much to do with the level of feed waste, although not everyone agrees on the best design.
Pigs are nibble feeders and tend to eat many times per day.
Feeder design problems can be found by observing feeding behavior. Pigs should be comfortable standing perpendicular to the trough. If the pig has to turn sideways or gets a mouthful of feed and then backs out to chew, there are likely feeder design problems. Design factors influencing feed intake include width, depth, and headroom of the tray. Inadequate headspace for the natural eating motions results in more spilled feed and poor feed conversion.