What type of study is this?

This is a Quantitative Study study.

October 8, 2025

Changes in breeding and genetic properties of the Sakhalin population of the Holstein breed over the period of long-term breeding

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Research demonstrates declining fertility and adaptability in a limited Sakhalin Holstein population.

Fertility and adaptability have decreased over generations in the Sakhalin Holstein population, indicating underlying genetic issues.
The correlation coefficient between milk yield and service period was found to be -0.227, revealing productivity challenges.
This study assesses breeding and genetic mechanisms affecting productive traits within four related Holstein populations.
Understanding these genetic parameters may help improve breeding strategies for better outcomes in dairy farming.

В. М. Кузнецов (2025) studied this question.

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