[Characteristics of some breeds of swine and populations of Georgian and Western Siberian wild boar by immunogenetic systems of blood serum proteins]. / Kharakteristika nekotorykh porod svinei i populiatsii dikogo kabana gruzii i zapadnoi sibiri po immunogeneticheskim sistemam syvorotochnykh belkov krovi.

A bank of reagents for hog serum protein allotypes has been created. All of these allotypes passed international comparison tests in 1987-1988. The bank can be used for typing the animals for four generally accepted (Gp, LpB, Lpr, and IgGH) and several experimental systems. In this study, immunogenetic characteristics of some pig breeds (Large White, Lithuanian White, Swedish Landrace, Kakhetinskaya, and Svanetskaya) bred in Georgia are compared with those of western Siberian breeds (Large White, Kemerovskaya, and Northern Siberian), and some foreign breeds, as well as with European, Caucasian, and Siberian subspecies of the wild boar.

[A2G--a new system of alpha-2-globulin allotypes in pig blood serum]. / A2G--novaia sistema allotipov alpha-2-globulinov syvorotki krovi svinei.

Combinations of four alpha-2-globulin allotypes were studied for their distribution in pigs of nine different breeds and hybrid groups. Based on this analysis, a new, previously unpublished polyallelic genetic system designated A2G was postulated. The complex alleles of this system control alpha-2-globulin allotypes and are suggested to be encoded by genes of two subloci. One of these subloci is virtually monomorphic, whereas the other has at least four allelic variants.

[Immunogenetic characteristics of the gene fund of Kakhetian swine and dynamics of population parameters in several generations]. / Immunogeneticheskie osobennosti genofonda kakhetinskikh svinei i dinamika populiatsionnykh parametrov pri smene neskol'kikh pokolenii.

Some peculiarities of gene fund and dynamics of populational characters of the oldest in Europe Kakhetian (Georgian) pigs were investigated during 18 years (10 generations). Genetic peculiarity of the aboriginal species populations in conditions of intensive pressure of natural selection and relatively weak artificial selection was determined with the help of codominant alleles of the blood groups E system. Considerable qualitative and quantitative differences were detected between Kakhetian pigs and all subspecies of European boars and domestic pigs of cultured breeds studied. Kakhetian pigs are strongly similar to wild boar, as concerns their morpho-physiological and behavioral characteristics. However, the assumption that they originated from Romanian (Caucasian) wild boar by direct domestication, without hybridization, is wrong, since they have alleles which are never found in European wild boars. The results of comparative study of Kakhetian and other domesticated and wild pig forms characteristics makes it possible to suppose that the presence in Kakhetian pigs gene fund of some alleles of East Asian origin is due to a certain participation of the Large White and Mangalica breeds in their phylogenesis. The two latter breeds, in their turn, obtained these alleles as a result of two waves of pig importation in Europe from the South-East Asia (on the eve of a.d. and about 150-200 years ago). This is indirectly confirmed by historical and zootechnical data.

[The results of international comparative testing of reagents to swine serum protein allotypes conducted in 1987-1988]. / O rezul'tatakh mezhdunarodnogo sravnitel'nogo ispytaniia reagentov k allotipam syvorotochnykh belkov svin'i, provedennogo v 1987-1988 godakh.

Antisera to 15 allotypes of pig serum protein were raised and compared with those prepared elsewhere, within the framework of International Comparison Test of pig blood groups and polymorphic proteins and enzymes in 1987-1988. Of 15 allotypes tested 8 were found to coincide with the known GpB, GpD, GpA, Gpa, IGH3 C1, Lpb3, Lpb12, Lbr1. For 7 allotypes left, no analogues were found out. They seem very likely to be new allotypes of pig serum proteins.

[Immunogenetic study of porcine IgG]. / Immunogeneticheskoe issledovanie IgG svin'i.

Three allotypes of IgG were identified in pig. Based on data obtained on electrophoretic mobility as well as on results of the International Comparative Test ISABR for pig blood group, polymorphic proteins and enzymes (1987-1988), the allotypes are specified as markers of two different IgG subclasses and are referred to as IgG1a, IgG2b and IgG2c. The former of these is established as corresponding to the already known IGH3 C1, and the other two had not been earlier described. In herds of pigs being bred in the Georgian SSR, the IgG1a allotype frequencies in Kakhetinskaya, Large White, Landrase and Lithuanian white were 0.84, 0.93, 0.91 and 0.94, respectively, whereas for the IgG2b allotype it ran 0.89, 0.73, 0.79, and 0.69 in the order mentioned. The IgG2c allotype was not registered in samples under examination.

[Allotypes of swine serum proteins]. / Issledovanie allotipov syvorotochnykh belkov svinei.

A series of intraspecific immunizations of pigs by whole blood serum in complete Freund's adjuvant was performed. Four allo-antisera to different serum allotypes were obtained. These allotypes were assigned to A1, B1, C1 and D1. The results of identification show that the allotype A1 is probably a marker of immunoglobulin G. The allotypes B1, C1 and D1 were established to belong to different alpha-globulins, D1 being a marker of lipoprotein. Two geographically isolated populations of white large breed were tested. Two allotype combinations were found to be independent of one another and of sex. Significant differences in allotype frequency between two populations were only established for the G1 (F = 0.142 and 0.334; P less than 0.01). In both populations allotype B1 has the frequency 1.0, the frequencies of allotype A1 being 0.734 and 0.747. Most rare is the allotype D1 (F = 0.078 and 0.082).