Emphasis on having male children to help out on the farm and to support parents in their old age, as well as for prestige reasons, makes it difficult to implement birth control programs.
農復會中許多擁有「洋學位」的專家們，並為農民提供「地毯式」的服務，當時任農發會技正的李崇道，就曾從南到北為台灣的每一頭毛豬注射疫苗。他們也以同樣的工作熱誠推廣飼養雞、鴨、乳牛等。