[Fertility and reproduction in women working in beet growing and animal breeding (1943-1982)].

The article contains formulae for real fertility rate (RFR), functional and calendar-related pregnancy intervals. RFR is proposed as the criteria in the assessment of occupational factors' influence on the reproduction function in couples not using contraceptives. The simultaneous reproduction assessment with two indices involved (real fertility and birthrate) made it possible to evaluate the role of the occupational and social factors in human reproduction in the region. The agricultural female workers surveys showed that RFR remained stable at the time of examinations and births, taking account of the age, in women engaged in beet raising, cattle breeding and employees, who had been working in different labour conditions for 40 years. Within the same period of time, birth rates in the beet-raisers were markedly higher as compared with the employees.