Lambs are born during the winter for various reasons. ... This means that the sheep are primarily feeding on hay and grain which is most often kept down at a barn. Incidentally, this also means the sheep are down at the barn making it more likely for them to lamb in the safety and protection of the barnyard areas.

Why do farmers lamb in winter?

Many sheep on farms are forcibly impregnated so that they give birth during the winter months and their babies can be weaned in the spring when the fields are the most fertile. Plentiful food in the spring means that lambs become fat prior to being slaughtered for the Christmas lamb market.

Can sheep have lambs all year round?

Lambs are born around 145 days (or about 4.5 months) after the ewe falls pregnant. Lambing can start as early as December and go on to as late as June. Specialist breeds will lamb all year round, satisfying demand for the Christmas and Easter trade.