Today's high yielding cow is commonly accepted to be less fertile and
more susceptible to metabolic and infectious disease than her
ancestors. It is important that we look at the logic and fact behind
this, says John Newbold and reflect on some of the evidence that
highlights the role of nutrition in improving these vital management
factors.
This article can also be found at Feed Mix, volume 13, no. 3
FM_13.3_6.pdf