Apr 20, 2012 · The mix should contain as much of these minerals as possible while containing enough salt to encourage use by deer. In general, there should be at least 1.5–2.0 times as much calcium as phosphorus. This is the approximate ratio of these minerals in mature antlers. These truck model feeders may be mounted in the back of a pickup, or they can be mounted across a flatbed. All of these feeders work the same way. The trailer is powered by the small wheel being engaged against the ground wheel. The truck model feeder is powered by a 12 volt motor that runs off the truck battery. These are not starter motors. 1 to 2 months. Sausage, fully cooked, from chicken, turkey, pork, or beef. 1 week. 1 to 2 months. Hamburger and other ground meats. Hamburger, ground beef, turkey, veal, pork, lamb, and mixtures of them. 1 to 2 days. 3 to 4 months. Fresh beef, veal, lamb, and pork.