Naimanov DK, Shaykamal GI, Kazhiyakbarova AT, Dzulamanov EB.
Milk productivity of daughters from sires of various lines of Holstein breed and the content
of somatic cells in milk
DK Naimanov1, GI Shaykamal1, AT Kazhiyakbarova1, EB Dzulamanov2
1Kostanay state University named after A. Baitursynov (Kostanay, Republic of Kazakhstan)
2Federal Research Center for Biological Systems and Agrotechnologies of the Russian Academy of Sciences (Orenburg, Russia)
Summary. Currently, the main breeding trendof cattle is the realization of genetic potential through complete feed and improved technology of keeping. The aim of the work was to establish the relationship of milk productivity and some economically useful traits and to determine the degree of influence of the genotype of bulls on the productive indicators of progeny. Improving the genetic qualities of breeding stock, the main role is played by sires. This article presents a comparative description of milk productivity of sires in the context of three lines: Reflection Sovering, Vis Back Ideal, Montwick Chieftain in terms of breeding farm «Bek +»of Fedorovsky District, Kostanay region, Republic of Kazakhstan. High milk production of Holstein animals is closely related to the genetic characteristics of animals; where the maximum milking yield was shown by the daughters of sires of Reflection Sovering 501Н8778 line with an average milk yield of daughters 8911.42±235 kg; 501H10525-8846,24±151 kg; USA64552203-8752,76±168 kg; USA 66591025-8561.46±251 kg of milk, with fat and protein content of milk in the range of 3.21-3.38 %; 2.12-2.32 %, respectively. The relationship between the quantitative content of somatic cells in 1 ml of milk and milking yield is revealed. With an increase in average daily milk yield from 10 to 25 kg, the number of somatic cells reduced significantly, with a yield of more than 25 kg, an increase in the growth of somatic cells in milk is again observed. The data obtained allow us to recommend animals of the Reflection Sovering line to increase the quantitative indicators of milk productivity, since an abundant yield made it possible to obtain the highest yield of milk fat and protein from the cows of this line.
Key words: cows, Holstein breed, milk production, milk yield, lines of Holstein bulls, live weight, somatic cells, Republic of Kazakhstan.
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Naimanov Doskali Kurmashevich, Dr. Sci. (Agr.), Professor, Kostanay State University named after A. Baitursynov, 110000, Republic of Kazakhstan, Kostanay, 47 A. Baytursynov St., tel.: 87775835013, e-mail: firstname.lastname@example.org
Shaykamal Gulshat Imanzhankyzy, Cand. Sci. (Agr.), Head of the Department of Livestock Products Technology, Kostanay State University named after A. Baitursynov, 110000, Republic of Kazakhstan, Kostanay, 47 A. Baytursynov St., tel.: 87773528371, e-mail: email@example.com
Kazhiyakbarova Aigerim Tulegenovna, Postdoctoral student of the Department for livestock production technology Kostanay State University named after A. Baitursynov, 110000, Republic of Kazakhstan, Kostanay, 47 A. Baytursynov St., tel.: 87470169355, e-mail: firstname.lastname@example.org
Dzhulamanov Erzhan Brelevich, Cand. Sci. (Agr.),Researcher of Laboratory of the Beef Cattle Selection Federal Research Center for Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 460000, Orenburg, Russia, 29, 9 Januarya St., tel.: 8-9225-56-61-47, e-mail: email@example.com
Received: 14 June 2019; Accepted: 17 June 2019; Published: 28 June 2019