TexasBred":2f98o6fk said:
Mike, you're in 'bama, I'm in Texas. In our areas energy should not be a problem in winter. Cows get good and comfortable about the time we put out heavy jacket on. That's about 10 days out of the year for me. :lol:
HAIR OF THE COW...
CALCULATING COW ENERGY REQUIREMENTS
As temperatures drop, the energy requirements for your cows increases. The lower critical temperature for a dry cow is 32 degrees F. A cow's energy requirements increase 1% for each degree the wind chill is below the lower critical temperature.
To calculate energy requirements, follow these guidelines: Obtain expected wind chill requirements from local weather forecasts. Calculate the magnitude of cold by subtracting the degree of wind chill from 32 degrees. Calculate the energy needs based on 1% for each degree below the critical temperature. Feed cows the appropriate increase to meet their energy requirements.
Cows that have a wet hair coat reach their critical temperature at 59 degrees F., which is 27 degrees warmer than dry hair coat cows. The energy requirements for wet cows change twice as much for each degree change in wind chill. To calculate the magnitude of cold when a cow is wet, subtract the wind chill from 59 degrees F. and multiply by two.