 In the southern hemisphere the cooperative dairying systems allow for two months on no productivity because their systems are designed to take advantage of maximum grass and milk production in the spring and because the milk processing plants pay bonuses in the dry (winter) season to carry the farmers through the mid-winter break from milking.It also means that cows have a rest from milk production when they are most heavily pregnant.Some year-round milk farms are penalised financially for overproduction at any time in the year by being unable to sell their overproduction at current prices.