[Immunogenetic similarity and the distance between Swiss brown cattle and 86 other bovine populations]. / Immunogeneticheskoe skhodstvo i distantsiia shvitskogo skota s 86 drugimi populiatsiiami bych'ikh.

By using the frequencies of 43-46 antigens of 9-11 genetic blood group systems in 108145 animals the immunogenetic similarity (r +/- m(r)) and the distance (d) between a Swiss brown cattle and other 86 representatives of the Bovinae subfamily were calculated. The position of Swiss brown cattle on a linear model of the Bovinae family was determined. The position has following indexes: r = 0.7816 +/- 0.0197; d = 0.2181. Phylogenesis of 16 cattle breeds reared with participation of the Swiss brown breed was studied. On the dendrogram these breeds formed two clusters and three branches. The clusters at the bottom of the dendrogram (Swiss brown x brown carpathian) and in the middle (ala-tau x caucasian brown) included breeds reared in the foothills and highlands, and the top of the dendrogram is formed by the lebedin, kostroma breeds and the Tajik type of Swiss brown zebu cattle reared in the flat country.

[Effectiveness of selection taking into account differences in parental couples for histocompatibility antigens]. / Effektivnost' podbora s uchetom razlichii roditel'skikh par po antigenam gistosovmestimosti.

The connection of the histoincompatibility antigens, determined by the reaction in a mixed culture of lymphocytes of the pair of parents, with the litter of linear mice and live weight of cattle was studied. It was ascertained that the degree of the difference between mates for histocompatibility locus correlated with fruitfulness and productive qualities of the descendants. As a result, a greater quantity of descendants of animals, being more viable, are born. The descendants of the parents, having the high indexes of the reaction in the mixed culture of lymphocytes, are born larger and stronger and retain this advantage during succeeding life periods. The reaction in monozygotic twins has a minimum index. The index of the reaction increases when the relationship between individuals decreases. The method of mixed culture of lymphocytes can be used for prognosis of pairs' combination, for maintenance of the heterogeneity and for determination of the degree of relationship between animals.

[Mono- and polymorphic blood protein loci in mink (Mustela vison Schr.)]. / Mono-i polimorfnye lokusy belkov krovi norok (Mustela vison Schr.)

Heterogeneity of haemoglobin, albumin, transferrin, esterase, alkaline and acidic phosphatases, haptoglobin, post-albumin, ceruloplasmin, carboanhydrase was studied in 1501 standard and colour minks by means of starch gel electrophoresis. Only the last three proteins of the enumerated ones have hereditary variations. Frequencies of the "main" allels of these systems are not lower than 0.9 and the average heterozygosis is 0.023.