After the sows intake is established they should be fed to appetite. Nursing sows need to consume 8-10.5 gallons of water every day. Sows will quickly become frustrated if the flow rate is low and this will influence their appetite for dry feed. Water temperature and quality are also important. Reduce environmental stress.
High temperatures found in the farrowing house can also cause low appetites.
The appetite of the lactating sow will be reduced by about .22 lb. per day for each 1 F above comfort temperature. Similarly, increasing the rate of air movement around the animal by maximizing ventilation rate will improve appetite. Also remember that the flooring with low warmth retention will help to reduce the heat stress on the sow. Lower metabolic demands. Another way of closing the gap between lactation feed intake and needs is by reducing the sow's nutritional requirements.