From the Pa Game Commission....
Improperly field-dressing a deer carcass and warm weather can impact the quality of venison quickly if a harvested deer isn't handled properly warns Dr. Walter Cottrell, Pennsylvania Game Commission wildlife veterinarian.
"After properly tagging their deer, hunters should wear latex gloves to remove the entrails," Dr. Cottrell said. "Great care should be taken to remove entrails without rupturing them, and hunters should drain excess blood remaining in the cavity. Do not wash out the deer in a creek. Wipe down the cavity with a dry cloth."
Once entrails are removed, the deer should be taken from the field and cooled down as soon as possible. In warm weather, the cool-down process begins when you field-dress the deer. To improve the cool-down process, consider skinning the deer and hang the carcass in the shade, refrigerating it or placing a bag of ice in the body cavity. Never place a deer carcass - with or without the hide on it - in direct sunlight.
If a hunter plans to process the deer by his or herself, the first step - after tagging and field-dressing the deer - is to remove the hide, which comes off easier if the front legs are cut off at the wrists, and the rear legs are removed just below the knee joint, with a saw. Use a knife to cut the hide from where each leg was sawed off at the wrist, back to the body trunk. Cutting the rear legs at the joint also makes it easier to hang a carcass on a gambrel or meat hooks. Hang the carcass by the large tendons on the back legs.
Next, the hide is pulled from the carcass, starting at the rear end and working downward toward the head. Peal it from the hind-quarters first, then cut the tailbone and pull it down to the shoulders. Work the hide over the shoulders and pull it away from the legs. Finally, pull the hide down the neck as close to the base of the skull as possible and cut the carcass free from the head with a clean saw. Remove the trachea.
The remaining hide-free carcass should be wiped off immediately. If you use water to clean the cavity or carcass, dry the meat immediately. Wet or damp meat spoils more quickly and is more prone to cultivate and nurture bacteria. Rinsing meat with water also can hasten the spread of bacteria. Any blood clotting and hair should be removed. It's also a good idea to remove large fatty deposits to improve the quality of your meat. It helps lessen that "game taste" some people dislike about venison.
Following these steps will prepare your carcass for hanging in a meat processor's refrigerator, or quartering and placing it in your refrigerator. If the air temperature is above 50 degrees, hunters should get their carcass refrigerated as soon as possible.
"Deer harvested in warm weather have a higher bacterial load, so it's important to dress the deer as soon as possible, transport it from the field and remove the hide, and refrigerate the carcass," Dr. Cottrell said. "Cooling the carcass will prevent bacterial growth."
Hunters who are interested in becoming more self-sufficient also can de-bone the carcass. The cuts are relatively simple and can be made while the deer is hanging or from a plastic sheet-covered table. Use a plastic fluorescent light cover for an inexpensive cutting board. They can be purchased at any home supplies store. First, remove the front shoulders with a filleting knife. This can be done without cutting a bone by cutting behind the shoulder-blade. Next, remove the meat from the shoulder with a filleting knife.
Hindquarters can be removed from the carcass next by using a saw. If you plan to have steaks or jerky made from them, don't make any cuts. Leave them intact.
Inside the body cavity, against the backbone, are the tenderloins, considered the best cut of meat on a deer. Use your hand, and a knife when necessary, to pull them free. Outside the cavity, along the backbone, are the loin muscles or back-straps, which also are outstanding cuts. Using a filleting knife, slide the blade along the spine to separate each back-strap and then finish each piece by cutting in along the top of the ribs and under the muscle to the first cut you've made.
The remainder of the carcass can be de-boned with a filleting knife. Try to trim fat from meat where you can and wipe off blood whenever it is encountered. De-boning can be done relatively quickly, but remember, every ounce of meat you remove increases your trimmings for sausage, bologna, meat sticks or other products. De-boned meat can be taken to a meat processor immediately, or frozen and taken later. Hindquarters may be frozen for processing later as jerky or dried venison. Steaks should be cut fresh.
"It's always a good idea to become self-sufficient as a hunter, because of the satisfaction you'll derive from processing a deer all by yourself and the extra care and quality control you'll provide," noted J. Carl Graybill Jr., Pennsylvania Game Commission Bureau of Information and Education director. "It also broadens your hunting experience and makes you more conscious of where you need to place the crosshairs when you shoot."