The influence of targeted selection on the exterior and productive indicators of Stavropol sheep in the dry steppe zone of the Volga region
https://doi.org/10.32634/0869-8155-2022-359-5-45-48
Abstract
Relevance. Purposeful selection contributes to obtaining the optimal type of sheep of the Stavropol breed with improved exterior and productive parameters in the steppe conditions of the Volga region.
Methods. The experiment took place in the CJSC “New Life” of the Novouzensky district of the Saratov region. The research material is purebred sheep of the Stavropol breed. Formation of experimental groups of queens (3): during selection into constitutionally productive types, an eye-dimensional assessment of external forms was used, which was specified by the measurements of body articles, live weight. In the first group were selected queens with a deviation to the strong type of constitution, in the second — to the gentle, in the third — to the loose. They mated with strong-type tups.
Results. The offspring were formed: group I — from strong queens, II — tender, III — loose types. At birth, group III ewes had an advantage over I by 1.70%, over II — by 7.47%. Group I was superior in live weight to group II by 5.67%. In 4.5 months, “loose x strong” offspring exceeded “strong x strong” by 2.43%, “tender x strong” — by 12.27%. “Strong x strong” had an advantage over “gentle x strong” by 9.61%. According to the exterior at birth, the descendants of “loose x strong” surpassed “strong x strong”, “tender x strong” in chest width by 19.52; 5.78%; chest circumference — by 6.08; 10.99%, “strong x strong” prevailed over “gentle x strong” in chest width by 32%; chest circumference — by 4.62%. The trend of changing body measurements was observed at 4.5 monthsas well. According to the downness index at birth, “tender x strong” exceeded “strong x strong”, “loose x strong” by 8.03; 9.12%, at 4.5 months “strong x strong” had superiority over “tender x strong”, “loose x strong” by 3.77; 4.77%. All the young animals inherited the constitutional and productive characteristics of their parents, which is important in the inbreeding selection of sheep of the Stavropol breed in the Volga region.
About the Authors
E. A. Lakota
Federal State Budgetary Scientific Institution “Federal Agrarian Scientific Center of the SouthEast”
Russian Federation
Russian Federation
Lakota Elena Aleksandrovna, Doctor of Agricultural Sciences,
Leading Researcher
410010, City of Saratov, Tulaykova street, 7
O. A. Vorontsova
Federal State Budgetary Scientific Institution “Federal Agrarian Scientific Center of the SouthEast”
Russian Federation
Russian Federation
Vorontsova Olga Aleksandrovna, Candidate of Agricultural
Sciences, Senior Researcher
410010, City of Saratov, Tulaykova street, 7
S. N. Zamygin
Federal State Budgetary Scientific Institution “Federal Agrarian Scientific Center of the SouthEast”
Russian Federation
Russian Federation
Zamygin Sergej Nikolaevich, Specialist of the I category
410010, City of Saratov, Tulaykova street, 7
References
1. Erokhin A.I. Breeding of sheep and goats. M. Astrel. 2004. 182 p.
2. Krasota V.F., Lobanov V.T. Breeding of farm animals. M. "Ear", 1976. p. 178.
3. Smuneva V.K. [et al.] Breeding of farm animals: an educational and methodical manual. Vitebsk : Vitebsk State Academy of Veterinary Medicine 2010. 53 p
4. Chu M. Polimorphismus of coding region of BMPR-IB gene and their relationship with litter size in sheep / M. Chu et. al. // Mol Biol Rep. 2011. № 38(6). P. 4071.
5. Ulyanov A.N. Sheep breeding: textbook. Barnaul: Circulation, 2008. 460 p.
6. Lakota E.A. Exterior features of crossbreed sheep of woolmeat type bred in the dry steppe of the Volga region. Scientific support of the agro-industrial complex of the South of Russia: Regional scientific and practical conference, May 22. Maykop, 2013. pp. 159–163.
7. Lashkina T.A., Semenov A.P., Balandyukov A.S. A promising constitutionally productive type of merino for semi-desert conditions of the Volga region. Sheep, goats, wool business. - 2004. No. 2. pp. 5–6.
8. Semenov A.P., Shekhovtseva E.A., Lakota E.A., Kozlova N.N. Methods of forming the breeding base of the Stavropol breed in the Saratov region. Animal husbandry – food security of the country: A collection of abstracts of the international scientific and practical conference on March 29–31. Stavropol, 2006. pp. 116–117.
9. Chizhova L.N. Laboratory of Immunogenetics and DNA technologies: present and future. Collection of scientific papers of the All-Union Scientific Research Institute of Sheep and Goat Breeding. 2015. Vol. 2. No. 8. pp. 144–147.
10. Methodological recommendations for the creation of factory types, lines and families of sheep of fine-wool and semifine-wool breeds. All-Russian Academy of Agricultural Scientific Illustration. M. 1984. 30 p.
11. Recommendations for the creation of breeding groups of sheep in breeding farms of fine-fleeced and semi-fine-fleeced meat and wool breeds. All-Russian Academy of Agricultural Scientific Illustration. Institute of Sheep and Goat Breeding. Stavropol, 1991. 20 p.
Review
For citations:
Lakota E.A., Vorontsova O.A., Zamygin S.N. The influence of targeted selection on the exterior and productive indicators of Stavropol sheep in the dry steppe zone of the Volga region. Agrarian science. 2022;(5):45-48. (In Russ.) https://doi.org/10.32634/0869-8155-2022-359-5-45-48
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