The Amish, for example, still compete within the context of their chosen life style without tractors. Others refuse to make the change or cannot do so. The latter ones compete in a larger market that uses the technology and often do so at a serious disadvantage. Most farms that did not switch from draft animals to tractors passed out of business. Ideally, this should include both well-controlled research studies and the evaluation of the idea under practical conditions.
Every new technique requires new skills, knowledge, and ways of thinking.
Remember that sometimes the roadblocks to adopting a profitable technology are not the practical issues, but the emotional ones. It is to be administered by subcutaneous injection once every 14 days. It has been shown in repeated research trials and under practical conditions to increase milk production in healthy, well-managed cows. Milk production responses typically rise in the first few days following injection and then gradually decline across the 14-day treatment period. When averaged across the 14 days of the treatment period, the typical response in well-managed herds appears to be an increase of 8 to 12 pounds of milk per treated cow per day.