Does used to breed show-quality goats are normally very large, as show goats are expected to be of large stature. For commercial meat production, medium-sized does are normally preferred, as they produce the same number of kids, but require less feed to do so. As a general rule, the more kids born per doe, the greater profit margins for the owner. Boer goats are polyestrous (they can breed throughout the year), and they reach sexual maturity at five months of age. A typical breeding program is to produce three kid crops every two years, meaning the does are pregnant for five months, nurse their kids for three months, and then are rebred. Multiple births are common, and a 200% kid crop is achievable in managed herds. Usually, first-time does will have one kid, but it is possible for them to have more. After that, they will usually have two kids.