INVESTIGADORES
GIOVAMBATTISTA Guillermo
artículos
Título:
Estudio de la variabilidad gen¨¦tica en una poblaci¨®n de ganado Bovino Criollo Argentino aislada geogr¨¢ficamente en una pradera de altura
Autor/es:
GIOVAMBATTISTA, G.; GOLIJOW, C.D.; RIPOLI, M.V.; ROCCIA. I.L.; DULOUT, F. N.; LOJO, M.M.
Revista:
Analecta Veterinaria (CD ROM)
Editorial:
FACULTAD DE CIENCIAS VETERINARIAS, UNIVERSIDAD NACIONAL DE LA PLATA
Referencias:
Año: 1995 vol. 15 p. 3 - 9
ISSN:
1666-2954
Resumen:
The genetic variability of three loci (¦Ê-Case¨ªna, ¦Â-lactoglobulina and BoLA-DRB3) were studied in a population of Argentine Creole cattle isolated in a high grassland located in Chasquivil, (Tucum¨¢n). Despite the geographical isolation for such a long period and the small population size, tile analysis of data showed a high degree of heterozygosity. No allele was found to be fixed. The estimated genotype frequencies for ¦Ê-Casein and BoLADRB3 showed that these loci were in Hardy-Weinberg equilibrium, whereas ¦Â-Lactoglobulin exhibited a strong deviation with many heterozygotes. In theory, a population like Chasquivil should show a trend to increase the number of homozygotes. However, the result obtained in this study suggest that (at least for the three loci studies) this population might have developed same mechanisms to maintain genetic diversity. ¦Ê-Case¨ªna, ¦Â-lactoglobulina and BoLA-DRB3) were studied in a population of Argentine Creole cattle isolated in a high grassland located in Chasquivil, (Tucum¨¢n). Despite the geographical isolation for such a long period and the small population size, tile analysis of data showed a high degree of heterozygosity. No allele was found to be fixed. The estimated genotype frequencies for ¦Ê-Casein and BoLADRB3 showed that these loci were in Hardy-Weinberg equilibrium, whereas ¦Â-Lactoglobulin exhibited a strong deviation with many heterozygotes. In theory, a population like Chasquivil should show a trend to increase the number of homozygotes. However, the result obtained in this study suggest that (at least for the three loci studies) this population might have developed same mechanisms to maintain genetic diversity.
