An Update on past topics

摘要

The column on pasture breeding problems generated more mail than any oilier, All the letters alluded to the same scenario discussed in the column: poor conception rales for cows or heifers run on lush, high-protein forage. The only real difference wasthat some were high-protein grasses such as rye, oats or wheat, whereas others were legumes such as clover or alfalfa. I became aware of the problem when called in on a breeding failure on wheat pasture. The blame had been placed on estrogenic activity.I couldn't buy the diagnosis, but had no explanation.