The nature of inheritance of selection attributes and realization of the potential productivity of rabbits of breed Poltavske sriblo

Abstract

Goal. To find out the nature of inheritance of selection attributes and the level of realization of the potential productivity of rabbits of breed Poltavske sriblo. Methods. The study was conducted based on the research rabbit farm of Cherkasy research station of bioresources of NAAS on the livestock of rabbits of breed Poltavske sriblo. To achieve the goal group of animals was formed and analyzed in terms of several generations. Results. The data indicate that for pure breeding, because of the small variability of the studied signs, a probable correlation was fixed in values of the width of the loin (r=0.26; P>0.99). The analysis of the index of the phenotypic correlation between selection attributes in the output of livestock and progeny indicates a direct or inverse relationship between the signs (– 0.10...0.10, P<0.95). The coefficients of inheritance of selection attributes have also been found reliable in terms of live weight at the age of 120 days and an indicator of the width of the waist in adults (h2=0.27–0.52; P>0.99–0.999). For the rest of the studied indicators ratios have been established, which amounted to 0.19 and 0.27, but they were not statistically significant (P<0.95). Research on the productivity of rabbits showed that in the created population the degree of implementation of selection-genetic potential of productivity was 93.7–99.9% depending on the examined attribute. That value was maximal in terms of the width of the back (99.86%). Conclusions. The results of the study of the exterior indicators of the body and live weight of rabbits of the source generation and posterity have witnessed a high level of realization of the genetic potential of animals in the created popu­lation — 93.7–99.9% depending on the studied attribute. The coefficients of inheritance of selection attributes were significant in terms of live weight at the age of 120 days and an indicator of the width of the waist in adults (h2=0.27–0.52; P>0.99–0.999), which provides the prerequisites for further breeding activities to enhance meat productivity.