In order for selection and breeding to be carried outmost effectively, it is necessary to adhere to a certain breeding system.Unfortunately, most Russian breeders do not follow this rule. Their breeding inthe language of such a discipline as pedigree work is called random-breeding,or random crossings. With random-breeding almost no related matings take place,and the few closely related matings, which are rarely performed, do not havesigns of any sense of purpose.
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