By now most people know that more revenue and more pounds do not automatically equal more profit, which is why I am going to show you that small cows can be profitable.
I believe that you can single-trait select females for one thing: the percentage of her weight that her calf weighs at weaning. I regard this as the ultimate measure of a cow’s worth. It is a defense against the trap of selecting females based on simply having the largest calves and ending up with a bunch of massive females that will eat you into the poorhouse.
Small Cows: By the Numbers
Divide the calf’s weaning weight by the cow’s weight and multiply the answer by 100 to get the percentage. In the case of ranches that allow cows to wean calves naturally, weigh calves at the same age every year, between 6 and 8 months.
A 1,000-pound cow that weans a 450-pound calf has weaned 45 percent of her weight. A 1,500-pound cow weaning a 550-pound calf has only produced 36 percent of her weight.