References
- Bucătаru, N., 1993. Genetics. Publishing House Universitas, Kishinev.
- Castro, N., Kawashima, C., H. A. van Dorland, Morel, I., Miyamoto, A., Bruckmaier, R. M., 2012. Metabolic and energy status during the dry period is crucial for the resumption of ovarian activity postpartum in dairy cows. J. Dairy. Sci. 95, 5804–5812. http://dx.doi.org/10.3168/jds.-5666.
- Èisner, F.F., Omelˈânenko, A.A., Šapovalov, Yu.D., 1978. Reproduction of the herd on dairy farms of the industrial type. P.H. Agropromizdat, Moscow.
- Faulkoner, D. S., 1985. Introduction to quantitative genetics signs. Translation from English. A.G. Kreslavsky, V.G. Cherdantsev; Edited by. L. A. Zhivotovsky. Publishing House Agropromizdat, Moscow.
- Fedoseeva, N., 2007. Relationship between the intercalving period and the milk productivity of cows. Dairy and beef cattle breeding. 7, 25-26.
- Foksha, Valentin, Alexandra, Konstandoglo; Alexander, Kendigelyan, Igor, Akbash, Vasily, Kurulyuk, 2019. Assessment of the exterior of first-calf heifers of Holstein breed. Scientific papers. Series D. Animal Science. Bucharest, LXII. 2, 19-23. ISSN 2285-5750; ISSN Online 2393-2260.
- Gabaev, M.S., Gukežev, V.M., 2012. Influence of the duration of the service-period in daughter cows on the breeding assessment of cattle. J. Zootechnics. 6, 17-18. ISSN: 0235-2478
- Gritsenko S. A., 2016. Influence of reproduction ability on indicators of productivity of cows of the Black-and-White breed of the Southern Urals zone. Scientific-methodical electronic journal «Koncept». 15, 131–135. – URL: http://e-koncept.ru/2016/86926.htm.
- Grosu, H., 2005. Improvement programs. Ceres Publishing House, Bucharest.
- Kurzyukova, T.A., Perov, N.V., Zaitseva, O.V., 2017. The influence of the duration of the service period on the milk productivity of cows. J ХАА-н шинжлэх ухаан сэтгнуул. 22 (03), 22-25. DOI: https://doi.org/10.5564/mjas.v22i03.944
- Kuznetsov V.M., 2014. Adaptation and selection of Holstein cows under long-term raising. J Siberian Herald of Agricultural Science. 3, 85-89.
- Marusich, A. G., 2017. Cattle. Breeding herd reproduction. Educational and methodical manual. BelSHA Publishing House, Gorki ISBN 978-985-467-696-8.
- Maslov, V.N., 2007. Dependence of the reproductive function of Black-and-White Holsteinized cows on various factors. J Zootechnics. 4, 25-27. ISSN: 0235-2478.
- Mashkina, E. I., Shaganova, E. S., 2019. Economic damage of animal husbandry depending on productive qualities of cows. Electronic scientific journal "Economy Vector". 12. www.vectoreconomy.ru | Media EL № FС 77-66790, ISSN 2500-3666.
- Mather, K., Jinx, J., 1985. Biometrical genetics. Publish. House. Moscow.
- Oleksievich, E.A., 2021. The main indicators of reproduction and the reasons for the rejection of animals from the dairy herds of the Leningrad region. In: Genetic resources of domestic regional populations of Ayrshire cattle (Reference guide). Publishing House”AКGUS” IE Semenov I. Yu., St. Petersburg-Pushkin. 232 – 235. ISBN 78-5-6045271-2-2.
- Petuhov, V.L., Žigačev, F.I., Nazarov, G.A., 1985. Veterinary genetics with the basics of variation statistics. Agropromizdat P.H., Moscow.
- Rodionov, G.V., Izilov, Yu.S., Kharitonov, S.N., Tabakova. L.P., 2007. Cattle breeding. Publishing Houce Коlоs, Moscow.
- Wiltbank, Milo C., Kent, A. Weigel, Daniel, Z. Caraviello, 2007. Recent studies on nutritional factors affecting reproductive efficiency in U.S. Dairy herds. Western Dairy Management Conference, (Reno). NV March, 7-9.
- Žuchaev, K.V., 2010. Population homeostasis and animal adaptation, in: Physiological mechanisms of animal adaptation in changing conditions of existence (experimental and spontaneous models): Materials of interregional. scientific-practical. conf. (May 2009). NSAU Publishing House, Novosibirsk., 32 – 33. ISBN 978-5-94477-066-0.