To cull or not to cull (II)
Are the right cows leaving the herd? at some point, all cows leave the herd, regardless of level of production or genetic merit. When and why cows leave the herd has a direct impact on dairy profitablilty. Cady (2005) noted that 'Culling management is more complex than simply reducing herd turnover rate." A cow that leaves the heard before her time negatively impacts the bottom line of the dairy, as she hasn't generated enough marginal income to recoup rearing costs or purchase price. Similarly, like an athlete that stays in the game beyond their time, a cow that stays in the herd beyond her time hurts the profitability of the dairy by occupying a space that could be occupied by a more productive and profitable cow.