Then, magma upwelling at the Mid-Atlantic Ridge began to produce oceanic crust, parting the continents to form the Atlantic Ocean. Today the Mid-Atlantic Ridge snakes down the center of the Atlantic all the way from Iceland to the Antarctic Plate and remains an active site of sea-floor spreading..
Most calves are weaned between 120 and 290 days (3 to 10 months) after birth, but most producers like to wean their calves when they're around 205 (6 months) of age.Weight is also a factor, with the minimum being generally around 132lb (60kg). This will only add to the stress of the calves during weaning time. 2  Beware of the likely reaction of the first-calf heifers. 3  They will crawl the fence if you do not make it escape proof with a couple of strands of hot electric wire or steel panels.
Calves four months old are much easier to feed and manage in a drought situation. (See Agnote DAI-15 Feeding calves in drought-June 1999) Calf age at weaning Calves are generally weaned between 8-10 months of age. The actual age depends on several factors: 1  Feed availability-cows can continue lactation without losing condition in good years, but early weaning should be considered in drier years. 2  Condition and age of Cow-cow condition is a key factor to joining success.