The pH level in the rumen drops considerably if a large amount of quickly fermentable feed is ingested once or twice a day. This can cause subclinical rumen acidification, which damages the rumen wall. The forage passes through the rumen too quickly, because bacteria that ferment the raw fibres are inactive if the pH level is too low, and results in less digestion of roughage.
The ideal situation is for cows to eat 10 to 14 smaller portions every 24 hours to maintain proper and stable pH levels, so that fodder is used optimally. More frequent feeding and pushing feed stimulates cows to visit the feed fence more often to fill up the rumen again. Offering smaller portions reduces the possibility of selecting feed, which also has a positive effect on pH stability in the rumen. In addition, it means more frequent consumption of fresh and tasty feed at the feed fence.