Herd replacements are valuable assets on a dairy farm, but heifer rearing is not for everyone, especially if labour, housing and acreage are limited. Running a flying herd, whereby herd replacements are bought in, can free up milk producers to devote more attention to their milking herd; it also allows flexibility for adjustments to system and cow type. But purchasing new stock every year does come with health risks and there is also the temptation to retain less productive animals instead of […]