The features development of the reproductive system in interspecific hybrid males of the genus Ovis
https://doi.org/10.32634/0869-8155-2020-342-10-31-33
Abstract
Relevance. One of the main problems in the use of interspecific hybridization in animal husbandry is fertility decreasing in interspecific hybrids, especially males. In this regard, the study of the stages of development, morphology and biometric parameters of male testes is of great importance for characterizing the species characteristics of spermatogenesis and the development of assisted reproductive technologies.
Material and methods. The aim of the research was to study the weight, morphological and morphometric parameters of the testes from interspecific hybrids of argali with sheep of the Romanov breed in comparison with the original parental breed (Romanov breed). The object of research was purebred Romanov’ rams (n = 8) and interspecific hybrids of argali with the Romanov breed ewes (n = 10) at the age of 12 months. The weight, morphometric parameters of the testes, and also histological examination were studied. Statistical analysis was performed using SPSS v.15.0. ANOVA and comparison between groups were carried out using T-test.
Results. A significant decrease in a number of indicators characterizing the development and maturation of germ cells, in particular, the weight, volume of the testes, the diameter of the seminiferous tubules and the number of spermatogenic cells in them by 41%, 24%, 21% and 9%, was established in hybrid animals as compared to purebred animals. The obtained results indicated a later sexual maturation in hybrid animals compared to purebred peers. It must be taken into account when using the genetic resources of wild animal species in breeding programs for obtaining new breeding forms of farm animals.
About the Authors
N. A. Volkova
Ernst Federal Science Center for Animal Husbandry
Russian Federation
Russian Federation
Head of the laboratory, Doctor of Biological Sciences
142132, Moscow region, Podolsk district, Dubrovitsy, 60
L. A. Volkova
Ernst Federal Science Center for Animal Husbandry
Russian Federation
Russian Federation
Senior Researcher, Candidate of Biological Sciences
142132, Moscow region, Podolsk district, Dubrovitsy, 60
B. S. Iolchiev
Ernst Federal Science Center for Animal Husbandry
Russian Federation
Russian Federation
Leading Researcher, Doctor of Biological Sciences
142132, Moscow region, Podolsk district, Dubrovitsy, 60
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Review
For citations:
Volkova N.A., Volkova L.A., Iolchiev B.S. The features development of the reproductive system in interspecific hybrid males of the genus Ovis. Agrarian science. 2020;(10):31-33. (In Russ.) https://doi.org/10.32634/0869-8155-2020-342-10-31-33
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