Scores of animal scientists employed by public universities have helped pharmaceutical companies persuade farmers and ranchers to use antibiotics, hormones, and drugs to make their cattle grow bigger ever faster. With the use of these products, the average weight of a fattened steer sold to a packing plant is now roughly 1,300 pounds—up from 1,000 pounds in 1975.

It’s been a profitable venture for the drug companies, as well as for the professors and their universities. Agriculture schools increasingly depend on the industry for research grants, a sizable portion of which cover overhead and administrative costs. And many professors now add to their personal bank accounts by working for the companies as consultants and speakers. More than two-thirds of animal scientists reported in a 2005 survey that they had received money from industry in the previous five years, yet unlike a growing number of medical schools around the country, the schools of agriculture have largely rejected critics’ concerns about industry cash.