Using estimated breeding values (EBVs) is crucial in animal selection. Well-adapted, genetically superior animals perform better and are more efficient. Even though the environment plays a large role, it is the genetic value of a trait that determines the true potential of the animal.
Some farmers, however, are convinced that breeding values cannot accurately determine an animal’s genetic merit. A common inquiry is: “The progeny of a bull with average- or below-average breeding values perform well on my farm. Why is this superior performance not reflected in the bull’s breeding values?”
There are a variety of reasons for this. To begin with, an animal may fail to reach its genetic potential because the environment does not allow it.
In other words, an animal on your farm might have a lower breeding value than a similar animal in a herd elsewhere, but end up performing better because it is in a more favorable environment. These conditions enable it to reach its genetic potential, unlike the animal in the other herd.
VARIATIONS IN PROGENY
There are also a number of genetic factors that account for these anomalies. These are based on the way that DNA, the molecular hereditary material of all organisms, operates.
هذه القصة مأخوذة من طبعة May 08, 2020 من Farmer's Weekly.
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هذه القصة مأخوذة من طبعة May 08, 2020 من Farmer's Weekly.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
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