SRP127012 PRJNA422997 Placental function of mares fed with cereals and forage and mares fed with forage only Feeding pregnant broodmares with cereal concentrates has been shown to increase maternal insulin resistance and affect foal metabolism in the short and long-term. These effects are likely to be mediated by the placenta. Here, we investigated fetoplacental biometry and placental structure and function at term in mares fed with or without cereals concentrates