Growth-promoting implants – the choice for cattle widens
John McKinnon
Canadian Cattlemen
First, a short review. Growth-promoting implants have been in use for more than 50 years. It can be argued that no other technology has had a greater impact on the efficiency of North American beef production. Physiologically, their use results in increased lean tissue growth (i.e. muscle) at the expense of adipose (i.e. fat) tissue.