Разведение животных с основами частной зоотехнии в 2 частях. Ч.1 Животноводство = Animal Breeding and the Basic of Animal Industries. Animal Breeding.
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Selection is a method of well thought-out attachment for pairing certain females to a specific male in order to qualitatively improve their descendants.
The selection can be:
x individual (each female is selected by such a sire, in combination with which one can expect offspring with the desired qualities),
x group (for a group of females are fixed two or three sires of a higher class)
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