Bìol. Tvarin, 2016, Volume 18, Issue 3, pp. 36–45



O. S. Zhulinska, S. L. Drozd, S. V. Mohylnytska

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The M. F. Ivanov’s Institute of Animal Breeding in Steppe Region «Askania-Nova» –
National Scientific Selection Genetic Center of Sheep Breeding,

Soborna str., Askania-Nova, Chaplynskyi district, Kherson region, 75230,Ukraine

As the objects of research three flocks of Askanian Merino, Askanian Meat-Wool and Askanian Karakul sheep were used. The traditional indicators that characterize the reproductive function in the herd, namely, fertility, fecundity, number of born lambs per one hundred ewes, the part of stillbirths were studied. The dependence between these indicators and the total rainfall during May–October, essentially in wool and meet-wool sheep was detected. For the first time for researched herds the information about the part of animals with prolonged sexual cycle and premature births, the percentage of sheep showed heat at 2–5th weeks of pregnancy were received.The yearly dynamicsoftheseindexes was studied.

Indexes of total fertility and fertility in first, second, third and fourth sexual cycles are quite informative parameters to evaluate the readiness of stock to insemination, the correct time of the start of the mating campaign, skill technique of artificial insemination.

Survival of lambs in the 3rd–4th days of life in wool and meat-wool sheep was less than in hair (Karakul) ewes.

In Askanian Meat-Wool sheep with increasing fecundity rate over 140 % the death rate of lambs in the first 4 days grew 2 % on the average.

With the increase of weight of newborn lambs more than 8–8,7 % of the average for the breed the part of stillbirths increased 2–3 times.


1. Gordon A. Control of Animal Reproduction. Moscow. Agroprom Publ., 1988. 415 p.
2. Davydenko V. M. Intensive Biotechnological factors of ewe’s reproduction. Kyiv. Agr. Sci. Publ., 1998, 250 p. (in Ukrainian)
3. Koshevoy V. P., Sklyarov P. M., Naumenko S. V. Problems of sheep and goat reproduction and its decision ways. Harciv-Dnipropetrovsk, Gamaliya Publ., 2011, 467 p. (in Ukrainian)
4. Aboneyev V. V., Kvitko Y. D., Surov A. I., Selkin I. I., Shumayenko S. N., Yefimova N. I., Omarov A. A., Marchenko V. V., Sharko I. N., Bida P. S., Chirva S. L., Kupriyan L. N. Research Technicques about foundation of Meet Merino sheep herds in east area of Stavropol region with using of imported ram-sire. Stavropol, 2010, 30 p. (in Russian)
5. Chronicle of Nature of Biosphere Reserve “Askania-Nova”, 2010, Vol. 28, no 5: Report of SRW (final). Biosphere Reserve “Askania-Nova”. NAAS. State Register 0106U002552; Stockstating 0211U002293. Askania-Nova, 2011, pp. 1244–1615. (in Ukrainian)
6. Chronicle of Nature of Biosphere Reserve “Askania-Nova”, 2011–2015, Vol. 29–33. Chronicle of Nature of Biosphere Reserve “Askania-Nova”, 2011, Vol. 29: Report of SRW (progress). Biosphere Reserve “Askania-Nova” NAAS; State Register 0111U001637; Stockstating 0214U006349. Askania-Nova, 2012, 305 p. (in Ukrainian)
7. Chronicle of Nature of Biosphere Reserve “Askania-Nova”, 2011–2015, Vol. 29–33. Chronicle of Nature of Biosphere Reserve “Askania-Nova”, 2012, Vol. 30: Report of SRW (progress). Biosphere Reserve “Askania-Nova” NAAS; State Register 0111U001637; Stockstating 0214U000856. Askania-Nova, 2013, 351 p. (in Ukrainian)
8. Chronicle of Nature of Biosphere Reserve “Askania-Nova”, 2011–2015, Vol. 29–33. Chronicle of Nature of Biosphere Reserve “Askania-Nova”, 2013, Vol. 31: Report of SRW (progress).  Biosphere Reserve “Askania-Nova” NAAS. State Register 0111U001637; Stockstating 0214U001669. Askania-Nova, 2014, 373 p. (in Ukrainian)
9. Chronicle of Nature of Biosphere Reserve “Askania-Nova”, 2011–2015, Vol. 29–33. Chronicle of Nature of Biosphere Reserve “Askania-Nova”, 2014, Vol. 32: Report of SRW (progress). Biosphere Reserve “Askania-Nova” NAAS; State Register 0111U001637; Stockstating 0214U004441. Askania-Nova, 2015, 349 p. (in Ukrainian)
10. Duffy P., Boland M. P., Evans A. S. O. Follicle growth and fluctuations in FSH concentrations during seasonal anoestrus in sheep: Abstr. Annu. Conf. Soe. Study Fert., Aberystwyth, July, 1999. J. Reprod. And Fert. Abstr. Ser., 1999, no. 23, pp. 40–41.
11. Rosa H. J. D., Bryant M. J. Seasonality of reproduction in sheep. Review. Small Ruminant Research, 2003, vol. 48, pp. 155–171. https://doi.org/10.1016/S0921-4488(03)00038-5
12. Lobachova I. V. Influence of the season and hormones on oocytes in one’s life extractions in sheep. Sci. Bulletin Sheep Husbandry, Kherson, 2005, vol. 31–32, pp. 207–212. (in Ukrainian)
13. Zhulinska O. S. Several indices of passing of the postpartum period for ewes of various breeds. Problems of zooenjineering and veterinary medicine: Collection of sci. works of HDZVA. Veterinary Sciences. Kharkiv, RVV HDZVA Publ., 2008, Issue 16 (41), vol. 2, no. 2. pp. 257–263. (in Ukrainian)
14. Zaharov A. V. Morphophysiological criteria and their influence on reproduction ability for Artificial Insemination. Ref. Vet. sci. diss. Volgograd, 2005, 20 p. (in Russian)
15. Gimenez D. Reproductive Management of Goats and Sheep. Alabama Cooperative Extension System. Merck Veterinary Manual, Bulletin ANR, 2008, pp. 13–16.
16. Lobachova I. V., Shinkarenko I. S., Bolotov Y. I., Ivanina O. V. Artificial Insemination Technology of Sheep — Research Technicques. Ascania-Nova Publ., 2014, 10 p. (in Ukrainian)
17. Shinkarenko I. S. Physiological species of Ascanian Karakul Sheep reproduction. Cand. Biol. Sci. Diss., Kyiv, 1974, 164 p. (in Russian)
18. Shinkarenko I, Popov M. The effects of wide-ranging avstralization of Ascanian Merino sheep. The Ukrainian Animal Breeding, 2002, vol. 7, pp. 14–16. (in Ukrainian)
19. Zhulinska O. S. The prognosis of reproductive function of ewes in breeding season. Prichorn. Agrarian Science Bulletin, Mykolayiv, 2012, Issue 4 (69), vol. 2, no. 1, pp. 74–80. (in Ukrainian)
20. Dalton D. Sources of perinatal mortality. Lincoln College Farmers Conf., 1980, pp. 109–123.
21. Peterson C., Danell O. Factors affecting lamb mortality in Swedish sheep production. European association for animal production annual meeting summaries, 1983, vol. 2, p. 619.
23. Dwyer C. M. Behavioral development in the neonatal lamb: Effect of maternal and birthrelated factors. Theriogenology, 2003, 59, pp. 1027–1050.
24. Levchenko V. I., Kondrahin I. P., Vlizlo V. V., Karput I. M., Melnik Y. L., Bogatko L. M., Papchenko I. V., Stadnik A. M., Cukmanskij, Chumak M. I., Shchurevich H. O. Internal diseases of animal. Bila Tserkva, 2001, no. 2, 544 p. (in Ukrainian)
25. Moroz V. A. Merino Sheep of Australian. Moscow, Kolos Publ., 1992, 368 p. (in Russian)

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