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V N Novostavskiĭ

Publications and source records attributed to V N Novostavskiĭ.

4 recordsLinked to original sources
PubMed1975

[A method of forming analogous groups for selection-genetic research].

A method of forming groups of animals similar in a complex of characteristics is proposed. All the objects are represented by a linear diversity of an n-dimensional space Yi=xij containing the basis Yr. The criterion of the appurtenance of the object to a definite group is the value Yi--Yr min. The intra-group variation can be reduced provided the requirement Yi--Yr less than or equal to R. The method proposed affords the possibility of an abjective formation of groups of animals similar with respect to a complex of biological characteristics with the extent of heterogeneity required for the investigator. The method proposed is easily formalized and can be realized by means of computer.

Animals↗
PubMedDate not supplied

[Effectiveness of evaluating bulls according to their progeny by the "daughters-mothers" and "daughters-peers" methods].

The repeatability coefficient of sire evaluation by daughters performance in different lactations was 0.38-0.70, that suggests the necessity to specify annually the previous sire evaluation on receiving new daughters performance data. When using the "daughters-mothers" method the repeatability coefficients of sire evaluation by dairy indexes, milk fat content and total milk fat production (0.41, 0.52 and 0.45 respectively) were significantly higher than those obtained by the "daughters-herdmates" method (0.25, 0.30 and 0.28 respectively). Thus, sire progeny testing evaluation should be carried out simultaneously by both methods. Nevertheless, the "daughters-mothers" method is preferable.

Animals↗