English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The aim of the study is improvement of productive and reproductive indices of Holstein animals used in the Russian Federation due to their genomic evaluation using European criteria for this breed. The material for the research was repair heifers in the amount of 20 heads belonging to JSC “Niva” of the Stavropol region of Samara region. The genomic estimation of heifers was carried out in France in order to reveal the degree of the forecast’ reliability of productive, reproductive qualities of heifers. The material for genomic evaluation was taken from the animal’s auricle by puncture. The genomic evaluation revealed that not all heifers correspond to the expected characteristics of their parents’ phenotypic features. The fat and protein content of the milk was positive for all heifers, while the milk content of 7 heifers was negatively correlated. According to the results of genomic evaluation, 3 heifers are classified as excellent, 3 as moderate and 4 as weak heifers. The conducted researches on genomic evaluation of heifers in “Niva” JSC indicate the prospects of its use in selection and breeding work, as further accelerated increase in the efficiency of dairy cattle breeding without the use of progressive methods of evaluation of repair young animals will not allow to increase the productive, native and qualitative parameters of dairy productivity of cows in a short period of time. At present 17 out of 20 genome-appraised heifers have confirmed the results of the conducted researches.

Indicators of genomic evaluation of heifers using European criteria