In this investigation Amplified Fragment Length Polymorphism (AFLP) markers have been used to ass... more In this investigation Amplified Fragment Length Polymorphism (AFLP) markers have been used to assess genetic diversity and relationship among three local Albanian sheep breeds. A total of 93 unrelated individuals were analysed by three EcoRI/TaqI primer combination that produced 92 AFLP markers. Nei’s GST index was calculated to investigate the partition of diversity within and between breeds. The mean value of this index was 0.039, indicating that only 4% of the total genetic variation is due to between breeds differences, while 96% of the diversity is accounted by differences among individuals within breeds. The mean expected heterozygosity value for the whole population was 0.259, indicating that a high level of diversity is present in Albanian sheep compared to estimates in other regions. According to what indicated by the GST index, model-based clustering did not differentiate the breeds. The results obtained by AFLP data sets indicate high diversity in Albania but small genetic distances between breeds, confirming previous results obtained with microsatellites. These results reflect Albanian sheep management practices, which have facilitated a relevant gene flow between breeds. These results are useful to design proper breeding programs suited to conserve the genetic diversity presently existing in Albanian sheep.
The International Journal of Agriculture and Environmental Research
The study was conducted at the Agricultural Technology Transfer Center (ATTC) Korca in South East... more The study was conducted at the Agricultural Technology Transfer Center (ATTC) Korca in South East area of Albania. Two imported goat breeds, Alpine and Saana not previously characterized were included in the study. Their characterization is of great importance, and the information provided is of great value, especially for the ATTC which use these breeds for the improvement of the local populations by crossbreeding. Morphometric measurements of 50 animals were analyzed. Both breeds have similar values of body measurements. All morphometric traits were positively correlated, where most of them were statistically significant. Body weight has the highest positive correlation with CC (0.763), which is statistically significant. The PCA of all morphometric parameters indicated that the three components accounted 80.1% of the cumulative variance. The PCA and discriminant analysis indicated admixture between breeds. A regression analysis was performed to predict the body weight from morpho...
Acta Agriculturae Scandinavica, Section A - Animal Science, 2011
Local sheep breeds are important species for the Albanian livestock farmers. Nienty three unrelat... more Local sheep breeds are important species for the Albanian livestock farmers. Nienty three unrelated individuals belonging to three local sheep breeds were analyzed for 36 single nucleotide polymorphisms. Results were used to assess population parameters. This study was carried out within the framework of ECONOGENE project, intended to help molecular characterization of Albanian local sheep breeds. Population structure analysis and
By their paternal transmission, Y-chromosomal haplotypes are sensitive markers of population hist... more By their paternal transmission, Y-chromosomal haplotypes are sensitive markers of population history and male-mediated introgression. Previous studies identified biallelic single-nucleotide variants in the SRY, ZFY, DDX3Y genes, which in domestic goats identified four major Y-chromosomal haplotypes Y1A, Y1B, Y2A and Y2B with a marked geographic partitioning. Here, we analyze whole-genome sequences of 386 domestic goats from 75 modern breeds and 7 wild goat species that were generated by the VarGoats goat genome project. Phylogenetic analyses indicated domestic haplogroups corresponding to Y1B, Y2A and Y2B, respectively, whereas Y1A is split into Y1AA and Y1AB. All five haplogroups were detected in 26 ancient DNA samples from southeast Europe or Asia. Haplotypes from present-day bezoars are not shared with domestic goats and are attached to deep nodes of the trees and networks. Haplogroup distributions for 180 domestic breeds indicate ancient paternal population bottlenecks and expan...
In this investigation Amplified Fragment Length Polymorphism (AFLP) markers have been used to ass... more In this investigation Amplified Fragment Length Polymorphism (AFLP) markers have been used to assess genetic diversity and relationship among three local Albanian sheep breeds. A total of 93 unrelated individuals were analysed by three EcoRI/TaqI primer combination that produced 92 AFLP markers. Nei’s GST index was calculated to investigate the partition of diversity within and between breeds. The mean value of this index was 0.039, indicating that only 4% of the total genetic variation is due to between breeds differences, while 96% of the diversity is accounted by differences among individuals within breeds. The mean expected heterozygosity value for the whole population was 0.259, indicating that a high level of diversity is present in Albanian sheep compared to estimates in other regions. According to what indicated by the GST index, model-based clustering did not differentiate the breeds. The results obtained by AFLP data sets indicate high diversity in Albania but small genetic distances between breeds, confirming previous results obtained with microsatellites. These results reflect Albanian sheep management practices, which have facilitated a relevant gene flow between breeds. These results are useful to design proper breeding programs suited to conserve the genetic diversity presently existing in Albanian sheep.
The International Journal of Agriculture and Environmental Research
The study was conducted at the Agricultural Technology Transfer Center (ATTC) Korca in South East... more The study was conducted at the Agricultural Technology Transfer Center (ATTC) Korca in South East area of Albania. Two imported goat breeds, Alpine and Saana not previously characterized were included in the study. Their characterization is of great importance, and the information provided is of great value, especially for the ATTC which use these breeds for the improvement of the local populations by crossbreeding. Morphometric measurements of 50 animals were analyzed. Both breeds have similar values of body measurements. All morphometric traits were positively correlated, where most of them were statistically significant. Body weight has the highest positive correlation with CC (0.763), which is statistically significant. The PCA of all morphometric parameters indicated that the three components accounted 80.1% of the cumulative variance. The PCA and discriminant analysis indicated admixture between breeds. A regression analysis was performed to predict the body weight from morpho...
Acta Agriculturae Scandinavica, Section A - Animal Science, 2011
Local sheep breeds are important species for the Albanian livestock farmers. Nienty three unrelat... more Local sheep breeds are important species for the Albanian livestock farmers. Nienty three unrelated individuals belonging to three local sheep breeds were analyzed for 36 single nucleotide polymorphisms. Results were used to assess population parameters. This study was carried out within the framework of ECONOGENE project, intended to help molecular characterization of Albanian local sheep breeds. Population structure analysis and
By their paternal transmission, Y-chromosomal haplotypes are sensitive markers of population hist... more By their paternal transmission, Y-chromosomal haplotypes are sensitive markers of population history and male-mediated introgression. Previous studies identified biallelic single-nucleotide variants in the SRY, ZFY, DDX3Y genes, which in domestic goats identified four major Y-chromosomal haplotypes Y1A, Y1B, Y2A and Y2B with a marked geographic partitioning. Here, we analyze whole-genome sequences of 386 domestic goats from 75 modern breeds and 7 wild goat species that were generated by the VarGoats goat genome project. Phylogenetic analyses indicated domestic haplogroups corresponding to Y1B, Y2A and Y2B, respectively, whereas Y1A is split into Y1AA and Y1AB. All five haplogroups were detected in 26 ancient DNA samples from southeast Europe or Asia. Haplotypes from present-day bezoars are not shared with domestic goats and are attached to deep nodes of the trees and networks. Haplogroup distributions for 180 domestic breeds indicate ancient paternal population bottlenecks and expan...
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