This innovative Magrath Fluidfeeder with a non-reinforced probe permits one-handed administration of colostrum and life-saving fluids to newborn calves. The smooth plastic probe crimps at the neck to stop the flow while the user inserts the esophageal tube, a feature designed to help prevent accidental insertion into the trachea. The semi-flexible bottle is then turned upright and fluids flow into the calf. 1 quart bottle.