STUDY OF THE EFFECT OF HORMONAL DRUGS ON INDICATORS OF THE REPRODUCTIVE ABILITY OF FEMALES

Abstract

The article provides information on the study of the degree of implementation of
indicators of reproductive capacity with the use of various hormonal drugs, research
and control groups of female rabbits of the California and silver breeds were formed
(n=150) and the indicators of reproductive ability of female rabbits were investigated
according to the research scheme.
The study of the effect of hormonal treatment on indicators of the reproductive
capacity of female rabbits was carried out in the conditions of an industrial-type rabbit
farm of the Cherkasy Research Station of Biological Resources of the National
Academy of Sciences using hormonal preparations for synchronizing sexual drive
"Foligon" and "Sergon 500", which were administered intramuscularly 72 hours
before artificial insemination in dosage 40 and 50 IU per 1 female rabbit, respectively,
and the drug "Surfagon" to activate the ovulation process in a dosage of 0.2 ml
immediately after insemination. The female rabbits of the control group were
additionally injected with the drug "Surfagon" after insemination by natural means to
increase reproductive capacity. The results of the study of the effect of hormonal drugs
on the indicators of the reproductive capacity of female rabbits of the California breed
indicate the superiority of the experimental groups over the control by 10.9-14.8% in
terms of the number of offspring obtained.
The use of the ultrasound scanner "ULTRA SKAN 45" provided by PRATC NPO
"Progress" made it possible to conduct an ultrasound study of the number of fetuses in
female rabbits on the 20th day after insemination. According to the obtained data, the
average indicator of the number of fruits was in the range of 8.7-10.8 fruits. When
comparing the average values of this indicator, a probable predominance of female
rabbits of groups D1 and D2 over the control was established (р<0.05...0.001). The
results of breeding testified that for female rabbits of the California breed, higher
indicators of multifertility were recorded for female rabbits of group D2 - 9.6 goals,
minimum - 7.31 in female rabbits of group K (р<0.001). For females of group D1, the
corresponding indicator was registered at the mark - 8.0 goals.