Once foals reach 90-100 days of age, it is more economical and effective to feed the foals rather than the dams. If your pastures are dry, feed foals for continual growth. And, reduce or eliminate feeding lactating mares as long as they are a 5 or greater body condition score. Do not let mares get below a 5 if they are pregnant. Note importance of second trimester of pregnancy.
Research shows that pregnant broodmares gain most of their weight during the second trimester.
So, broodmares pregnant for 115 days or more are in this stage now. Do not let their body condition score drop below 5.5. It would be better to keep it higher if possible, such as, 6-7. Weaning four months old or older foals from these mares may help them increase their body condition. So, you can concentrate on foals and your productive, profitable broodmares.