Productive longevity of Holstein Bulls’ Female Offspring
Nadezhda Ivanovna Kulikova1, Olga Nikolaevna Eremenko2, Andrey Georgievich Koshchaev3, Tatyana Valerevna Kalashnikova4, Nikolai Vitalievich Evdokimov5, Kharon Adievich Amerkhanov6, Ivan Mikhailovich Dunin7

1Nadezhda Ivanovna Kulikova, Kuban State Agrarian University, Krasnodar, Russia.
2Olga Nikolaevna Eremenko, Kuban State Agrarian University, Krasnodar, Russia.
3Andrey Georgievich Koshchaev, Kuban State Agrarian University, Krasnodar, Russia.
4Tatyana Valerevna Kalashnikova, The All-Russian Research Institute for Horsebreeding, Ryazan Region, Russia.
5Nikolai Vitalievich Evdokimov, Chuvash State Agricultural Academy, Cheboksary, Russia.
6Kharon Adievich Amerkhanov, Russian Timiryazev State Agrarian University, Moscow, Russia.
7Ivan Mikhailovich Dunin, All-Russian Scientific and Research Institute of Breeding Business, Pushkin, Moscow Region, Russia.

Manuscript received on 18 June 2019 | Revised Manuscript received on 25 June 2019 | Manuscript published on 30 June 2019 | PP: 435-439 | Volume-8 Issue-5, June 2019 | Retrieval Number: D6385048419/19©BEIESP
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Abstract: The main task of breeding is obtaining highly productive livestock. In dairy cattle breeding, great attention is paid to productive qualities of animals, as well as to exterior features and longevity, since one of the ways of increasing profitability in dairy cattle breeding is increasing the period of practical use of high-yielding cows. This is consistent with the opinion of some scientists who suggest revising the criteria for assessing breeding animals, increasing the requirements to their growth, development and exterior, envisaging a comprehensive index for cows and bulls, where these characteristics would be considered. This paper shows the results of assessing the level of genetic potential of the bulls used at the Closed Joint-Stock Company Breeding Farm “Gulkevichsky” in the Gulkevichsky district of the Krasnodar Krai, the indicators of milk productivity of their female offspring, the longevity and lifetime productivity of cows, and the efficiency of practical use. The results of the research have revealed bulls of various lines with high genetic potential, as well as the reasons for cows disposal from the herd, and economic efficiency of using female offspring of the bulls of various lines.
Keywords: Bulls, Bulls’ Female Offspring, Fat Content, Genealogical Line, Genetic Potential, Milk Yield, Productive Longevity, Profitability

Scope of the Article: Agricultural Informatics