A drop in appetite from heat stress causes a drop in total energy getting into the cow. This can be managed by increasing the energy density of the total diet with energy dense feeds such as grain or meal fed in the shed. Even feeding extra PKE or potatoes with silage in the night paddock can help to increase cooler temperature feed intakes.
Find out more about heat stress and how Agvance products can assist your herd in dealing with the heat: https://agvance.co.nz/product-category/solutions/heat-stress/