Calf weaning weights have started to plateau due to limitations in their environment despite all the hot rod growth genetics and schemes to make bulls with 1000 adjusted 205-day weights. Weaning weight is highly important, but so is cost control and feedlot performance and feed efficiency and carcass value.
Summary
Overall, these results indicate
that trends for WW in commercial
cow-calf operations vary substantially
by region of the country. However,
there is considerable evidence that
progress in WW may be limited by
the production environment in
commercial cow-calf operations.
Perhaps one of the most
important takeaways from this
study is that commercial cow-calf
producers need to keep good records
in order to monitor progress in WW
and enterprise cost of production
over time.
Assuming a lack of significant
progress in calf WW, efforts to
enhance profitability should focus
on reducing cost of production
and/or capturing value of genetic
potential for post-weaning
performance and carcass value.
http://www.angusjournal.com/ArticlePDF/0219-weaning-weight.pdf