I've stated many times no one frame size or weight works best in every environment, management program or forage. Each breeder has to find what works best for them and what will return the most profit per acre.
The word moderate means something different to each breeder, When I see it used I have no idea what frame size or weight they are talking about. Many breeders never measure their cattle and have no idea what frame size they are.
We prefer a cow around a 6.0 frame efficient cow that will weigh 1,400-1,500 lbs. This size of cow does well in our environment and on our forage types. We desire a cow with good length, well muscled and good feet and legs along with good teats and udders. Our cows need to do well in our low input program and on low nutrient forages. A cow needs to be a high volume type of cow. Low volume short cows don't work for us. They require more inputs than our average sized cows.A recent MARC study shows the average weight of an Angus cow is 1,400 lbs. Many believe that is a big cow.
Many think all small cows are more efficient. Recent studies and research have found there is little if any correlation between frame size, weight and being efficient. In fact some studies have shown a breeder can reduce maintenance costs by 25% by selecting for efficient cattle, increase stocking rates and maintain frame size and weight. I feel that selecting for efficient cattle will be very important with higher feed costs.
Here our market docks anything less than a 5.5 frame heavily, Also we have found the smaller lighter cows will usually wean smaller calves. The same with low BW calves. On mature cows we desire a BW of 80-90 lbs. These calves are more vigorous and wean heavier.
Whether buying a bull or buying semen it is hard to find a bull over a 6.0 frame. And when buying a bull and you find one here the bidding war begins.The bulls under a 5.5 frame sell cheaper.
Again no one size, weight or type works best everywhere. We raise what works best for us in our market, environment and on our forages.I often wonder if those who claim the small cattle those under a 5.0 frame have e eroded a pen of their cattle out.