Dealing With The Challenges Of Cattle And Snow

By John Cothren

Winter brings a special set of challenges for cattle producers. The need for labor and management increase just as forage quality, feed availability, and hours of daylight available to get things done decrease. Just in case this doesn’t offer enough of a challenge, this is also calving season when we are bringing into the operation the product we will have to turn into profits in order to be here next winter.

The first consideration each day in winter time livestock care should be water. Water is the first limiting nutrient and although daily intake goes down in cold weather, adequate consumption every day is still vital. Cows can’t utilize frozen water. They may be able to meet part of their water requirement on a temporary basis by eating snow, but they also expend calories melting the snow and warming it to body temperature.  If you water your cattle in tanks, be aware that extended cold weather may result in a tank full of ice with no room for water.  If you use automatic waterers , check them daily to avoid catastrophe. They can only meet the water requirements of the cattle if they keep working normally. If a heater quits or a lid doesn’t close properly they can freeze up fast. With electric waterers or tank heaters be careful for shorts or bare wire. Stray voltage of only a few volts can cause cattle not to drink.

While warm, bedded, barns would be above the aspirations of most beef cows, some shelter should be provided, at least from the wind. Solid or semi-solid fences, trees, or brush areas are usually adequate. Three sided sheds are better, but must be cleaned out occasionally to avoid other problems.

Cattle are warm blooded creatures and must maintain a constant core temperature. Everyone knows that nutritional requirements increase in cold weather, but few stockmen know how much the energy requirement changes. Critical temperature is defined as the lower end of the cow’s comfort zone and is the temperature at which you need to increase feed provided. Hair and fat both serve as insulators.

The critical temperature for cows with good winter coats and good body condition is 20 degrees F.   As the temperature drops below this you need to feed these cows about 1% more for each degree drop below the critical temperature. For thin or short haired cows the critical temperature is about 30 degrees F and you will need to feed an extra 2% for each degree below this. When cows are wet the critical temperature is about 50 degree F.

Cold weather usually increases feet problems. Frozen rough ground causes abrasions on the feet. When the ground thaws, especially if it remains wet and muddy, conditions are ideal for the entry of infection at these abraded sites. Maintaining a graveled area around water sources and feeders can help a lot. Cattle tend to congregate more around feed grounds, which can become a high risk factor for calf pneumonia and calf diarrhea. Moving the feeding area around the pasture is a good idea, especially after the calves start to arrive.

Internal and external parasites can also be a concern. While winter is not a high risk time for the spread of roundworms, those adult worms living in your cow’s digestive system can be cheating you out of a lot of nutrition that your cows need. If you didn’t worm your cows in the fall, worming in cold weather might stop this loss and help your cows get off to a better start on green grass in the spring. Lice can be a serious winter problem as well. Watch closely for dark discoloration around the head and face or excess scratching and rubbing. Control lice by spraying if you can find a warm sunny day. Powders work well if applied evenly when temperatures remain cold and wetting is not advisable.

Source:ncsu.edu