The purpose of the research was studying the prevalence of distortion at the previous calving pre-ceding the developing of pathologies of the maw in cows of German black and motley breed, the esti-mation of the role of animals having suffered dysto-cia as etiological factor of emergence of abomasal shift. It was established that dystocia was present at the last calving in 1/7 of the 35 heads with abomasal shift (in 5 of 35 heads). In animals who have suffered dystocia it is expedient to predict first of all developing of left-, but not right-hand patholo-gies of the maw. The prevalence of suffered dysto-cia at the last calving in cows with abomasal shift in early (from 1-10 days) and later (from 11-62 days) post calving period differed slightly: 15.7 and 12.5 % respectively. The prevalence of cases of existence of dystocia suffered earlier in all 35 cows with abomasal shift made 14.2 %. The cases of emergence of shifts of the maw in cows who had suffered dystocia at the previous calving throughout all studied period of time which passed from the previous calving (that is in both test groups), these cases were followed by wide age range (2.4-8.0 years) and weight range (477-750 kg) in test ani-mals. The cows with abomasal shift and previous dystocia had also considerable standard range (2.5-4.0 points of BCS). Dystocia which took place at the last calving in examined cows was not the only item and dominating etiological factor of ap-proach of abomasal shift, it cannot be considered as a reliable diagnostic factor, the marker of emer-gence of abomasal shift in animals both in early, and during later period after calving.
dairy cows, dystocia, incidence, abomasal shift, clinical indices
1. Bezborodov P.N. K voprosu o klassifikacii zabolevaniy sychuga u korov // Rossiyskiy veterinarnyy zhurnal. Sel'skohozyaystvennye zhivotnye. - 2008. - № 2. - S. 22-23.
2. Bezborodov P.N. «Smeschenie» ili «zaval» sychuga u korov? // Transfert innovacionnyh tehnologiy v zhivotnovodstve: mat-ly Mezhdunar. nauch.-prakt. konf. - Orel: Izd-vo OrelGAU, 2008. - C. 19-22.
3. Bezborodov P.N. O probleme opredeleniy, klassifikacii i terminologii v izuchenii sostoyaniy smescheniya sychuga u vysokoproduktivnyh korov // Aktual'nye problemy veterinarii i zhivotnovodstva: mat-ly mezhregion. nauch.-prakt. konf. - Samara, 2010. - S. 28-36.
4. Bezborodov P.N. Metod «krugovoy» posledovatel'nosti provedeniya klinicheskoy diagnostiki vnutrennih nezaraznyh bolezney u krupnogo rogatogo skota // Dostizheniya molodyh uchenyh v razvitii innovacionnyh processov v ekonomike, nauke, obrazo-vanii: mat-ly III Mezhdunar. nauch.-prakt. konf.: v 2 ch. / pod red. I.A. Lazareva.- Bryansk: Izd-vo BGTU, 2011. - Ch. 1. - S. 233-235.
5. Bezborodov P.N. Osnovy primeneniya zarubezhnoy sistemy ocenki kondicii krupnogo rogatogo skota molochnogo napravleniya produktivnosti «BodyConditionScore (BCS)» // Vestnik Novosibirskogo GAU. - 2017. - № 2 (43). - S. 106-128.
6. Bezborodov P.N. Gannoverskiy tipovoy obrazec kart klinicheskoy kuracii zhivotnyh v usloviyah veterinarnyh klinik po lecheniyu krupnogo rogatogo skota // Uchenye za-piski uchrezhdeniya obrazovaniya «Vitebskaya ordena “Znak pocheta” gos. akad. vet. medi-ciny». - 2011. - T.47, № 2-1. - S. 121-129.
7. Bezborodov P.N. Opyt provedeniya operacii po repozicii levostoronnego zavala sychuga u korov // Uchenye zapiski Kazan.gos. akad. vet. mediciny im. N.E. Baumana. - Kazan', 2006. - T. 186. - S. 28-40.
8. Bezborodov P.N. Analiz dannyh prioperacionnoy eksploracii bryushnoy polosti u vysokoproduktivnyh korov s zavalom sychu-ga // Sovmestnaya deyatel'nost' sel'skohozyaystvennyh tovaroproizvoditeley i nauchnyh organizaciy v razvitii APK Cen-tral'noy Azii: mat-ly Mezhdunar. nauch.prakt. konf. - Irkutsk: Izd-vo Irkut. GSHA, 2008. - S. 43-47.
9. Bonneville-Hebert A., Bouchard E., Tremblay D.Du [et al.]. Effect of reproductive disorders and parirt on repeat breeder status and culling of dairy cows in Quebec // J. Vet. Res. 75. - 2011. - P. 147-151.
10. Carson A.F., Dawson L.E.R., Gordon F.J. The effect of heifer rearing regime on body size and milk production during the first lactation // Proc. British Soc. Anim. Sci. - 2000. - P. 13.
11. Dematawewa C.M.B., Berger P.J. Effect of dystocia on yield, fertility, and cow losses and an economic evaluation of dystocia scores for Holsteins // J. Dairy Sci. 80. - 1997. - P. 754-761.
12. Drew B. Factors affecting calving rates and dystokia in Friesian dairy heifers, the results of a large scale field trial // Ir. Grassl. and Anim. Prod. J. 20. - 1986. - P. 98-104.
13. Eaglen S., Coffey M., Woolliams J. [et al.]. Phenotypic effects of calving ease on the sub-sequent fertility and milk production of dam and calf in UK Holstein-Friesian heifers // J. Dairy Sci. 94. - 2011. - P. 5413-5423.
14. Gaafar H.M.A., Shamiah Sh.M., Abu El-Hamd M.A. Dystocia in Friesian cows and its effects on postpartumreproductive performance and milk production // Trop. Anim. Health Prod. 43. - 2011. - P. 229-234.
15. Holland M.D., Speer N.C., LeFever D.G. [et al.]. Factors contributing to dystocia due to foetalmalpresentation in beef cattle // Theriogenology 39. - 1993. - P. 899-908.
16. Hossein-Zadeh N., Ardalan M. Cow-specific risk factors for retained placenta, metritis and clinical mastitis in Holstein cows // Vet. Res. Commun. 35 - 2011. - P. 345-453.
17. Johanson J.M., Berger P.J. Birth weight as a predictor of calving ease and perinatal mortali-ty in Holstein cattle // J. Dairy Sci. 86. - 2003. - P. 3745-3755.
18. Lombard J.E., Garry F.B., Tomlinson S.M. [et al.]. Impacts of dystocia on health and sur-vival of dairy calves // Dairy Sci. 90. - 2007. - P. 1751-1760.
19. McClintock S.E. A genetic evaluation of dysto-cia in Australian Holstein-Friesian cattle. - PhD, Univ. Melbourne, 2004.
20. Meyer C.L., Berger P.J., Koehler K.J. [et al.]. Phenotypic trends in incidence of stillbirth for Holsteins in the United States // J. Dairy Sci. 84. - 2001. - P. 515-523.
21. Meijering A. Dystocia and stillbirth in cattle - a review of causes, relations and implications // Liv. Prod. Sci. 11. - 1984. - P. 143-177.
22. Mee J. Prevalence and Risk Factors for Dys-tocia in Dairy Cattle - With Emphasis on Con-finement Systems // WCDS Advances in Dairy Technology. - 2012. - Vol. 24. - P. 113-125.
23. Oltenacu P.A., Frick A., Lindhe B. Use of sta-tistical modeling and decision analysis to esti-mate financial losses due to dystocia and oth-er disease in Swedish cattle // Proc. 5th Intl. Symp. Vet. Epidem.and Econ., Copenhagen, Denmark. - 1988. - P. 353-355.
24. Philipsson J. Studies on calving difficulty, still-birth and associated factors in Swedish cattle breeds III Genetic parameters // Acta Agri. Scand. 26. - 1976. - P. 211-220.
25. Sewalem A., Miglior F., Kistemaker G. [et al.]. Relationship between reproduction traits and functional longevity in Canadian dairy cattle // J. Dairy Sci. 91. - 2008. - P. 1660-1668.
26. WhatisDystocia?[Elektron.resurs] // Mate-rialy internet-saytauniversiteta shtata Kolorado s bibliotekoy-depozitariem ob-razovatel'nyh materialov po veterinarii i sel'skomu hozyaystvu. - URL: https://www.cvmbs.colostate.edu/ilm/proinfo/calving/notes/causes.htm (data obrascheniya: 27.11.2017).
