The impact of reproductive capacity indicators of simmental cattle on their milk productivity

  • V. V. Fedorovych Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Ukraine
Keywords: cows, breed, reproductive capacity, milk yield, correlation, impact


It is well known with an increase of milk productivity of cows their reproductive capacity in general became worse. Therefore, it is important to establish optimal parameters of the first age insemination and first calving, duration of service- and inter-calving periods. In view of the above, the purpose of our researches was to study the influence of reproductive capacity parameters of Simmental cows on the formation of milk productivity. The study were conducted on 331 cows in agricultural LLC «Litynskyy» Drohobych raion, Lviv oblast. Evaluation of milk productivity and reproductive capacity of the animals (in 20 years) were performed according to the data of zootechnical accounting for the first, second, third and the best lactations. The differences in rates of milk productivity depending on the parameters of their reproductive capacity were established. Animals with age of first fruitful insemination 18.1–20.0, with first calving age – 27.1–29.0, duration of service period – 101–120 and duration of the inter-calving period – 381–400 days had the best yields and the highest quantity of milk fat. According to the above mentioned indicators of milk productivity they are likely dominated by animals with bigger or smaller indicators of reproductive capacity, but in most cases, this advantage was unreliable. It was found positive highly significant links between indicators of reproductive capacity of cows and milk yield. The highest correlation coefficients were observed between age of first calving and their milk yields, depending on lactation, they were 0.380–0.498, lower – between age of first insemination and milk yield – 0.316–0.456 and the lowest – between service- and inter-calving periods and yield – 0.124–0.335; 0.127–0.331 respectively. The impact of the abovementioned indicators on yield was within 23.13–39.88; 28.63–45.02; 30.98–35.17%, respectively. 


Sudarev, N.P., Abylkasymov, D.A., Vakhoneva, A.A., Voronyna, E.A. (2011). Zavysymost prodolzhytelnosty servys-peryoda ot urovnia udoia u vysokoproduktyvnykh korov. Zootekhnyia. 9, 20–21 (in Russian).

Novak, I.V. Fedorovych, V.V., Fedorovych, Ye.I. (2012). Vplyv viku pershoho plidnoho osimeninnia i pershoho otelennia na formuvannia molochnoi produktyvnosti koriv ukrainskoi chorno-riaboi molochnoi porody. Biolohiia tvaryn. 14(12), 486–490 (in Ukrainian).

Plohinskij, N.A. (1969). Rukovodstvo po biometrii dlja zootehnikov. M.: Kolos (in Russian).

Porshina, A., Loskutov, N. (2011). Vosproizvodstvo stada: Poterjannaja stranica. Zhivotnovodstvo Rossii. 9, 40–41 (in Russian).

Poslavska, Yu.V., Fedorovych, Ye.I., Bodnar, P.V. (2016). Zalezhnist molochnoi produktyvnosti koriv ukrainskoi chorno-riaboi molochnoi porody vid yikh zhyvoi masy ta viku pry pershomu osimeninnia ta pershomu otelenni. Visnyk Sumskoho natsionalnoho ahrarnoho universytetu. 5(29), 89–95 (in Ukrainian).

Fedorovych, V.V. (2015). Zalezhnist molochnoi produktyvnosti koriv airshyrskoi porody vid produktyvnosti yikh materiv. Zootekhnichna nauka: istoriia, problemy, perspektyvy. Materialy Mizhnarodnoi naukovo-praktychnoi konferentsii 21-22 travnia 2015 roku. Kamianets-Podilskyi, 121–123 (in Ukrainian).

Fedorovych, V.V. (2016). Zalezhnist molochnoi produktyvnosti koriv chervonoi polskoi porody vid pokaznykiv yikh vidtvoriuvalnoi zdatnosti. Naukovyi visnyk Lvivskoho natsionalnoho universytetu veterynarnoi medytsyny ta biotekhnolohii imeni S. Z. Gzhytskoho. 18, 1(65), 140–146 (in Ukrainian).

Fedorovych, Ye.I., Shcherbatyi, Z., Bodnar, P. (2014). Vplyv pokaznykiv vidtvornoi zdatnosti na molochnu produktyvnist koriv. Tvarynnytstvo Ukrainy. 2, 38–41 (in Ukrainian).

Mucha, S., Stanberg, E. (2011). Genetic analysis of milk urea nitrogen and ralationships with yield and fertility across lactation. J. Dairy Sci. 94, 5665–5672.

Van Raden, P.M., Olson, K.M., Null, D.J., Hutchison, J.L. (2011). Harmful recessive effects on fertility detected by absence of homo-zygous haplotypes. J. Dairy Sci. 94, 6153–6161.

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How to Cite
Fedorovych, V. (2017). The impact of reproductive capacity indicators of simmental cattle on their milk productivity. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Agricultural Sciences, 19(74), 52-56.