Genetic polymorphism of the αs1-casein locus in five populations of goats from Mexico
With the objective of estimating allele frequencies, and testing for population divergence for the CSN1S1 locus, genotypes of animals from five goat populations; Saanen (n = 97), Alpine (n = 81) Toggenburg (n = 92), local goats with external appearance similar to the Murciana-Granadina breed from Ce...
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Pontificia Universidad Católica de Valparaíso
2008
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oai:scielo:S0717-345820080003000072009-01-30Genetic polymorphism of the αs1-casein locus in five populations of goats from MexicoTorres-Vázquez,José AntonioVázquez Flores,FelícitasMontaldo,Hugo HUlloa-Arvizu,RaúlValencia Posadas,MauricioGayosso Vázquez,AmandaAlonso Morales,Rogelio Alejandro CSN1S1 gene frequencies genetic diversity goat milk PCR-RFLP With the objective of estimating allele frequencies, and testing for population divergence for the CSN1S1 locus, genotypes of animals from five goat populations; Saanen (n = 97), Alpine (n = 81) Toggenburg (n = 92), local goats with external appearance similar to the Murciana-Granadina breed from Central Mexico (n = 26) and heterogeneous local animals denominated Mosaico Lagunero (n = 30), from Northern Mexico, were identified using PCR and Xmn1 PCR-RFLP methodology. For Saanen, Alpine and Toggenburg, the sum of E and F alleles had the largest frequencies (from 0.468 to 0.789), while for the groups local Murciana-Granadina and Mosaico Lagunero the sum of the most frequent allelic groups (A* and B*), were 0.385 and 0.533 respectively. Both local Murciana-Granadina and Mosaico Lagunero populations showed heterozygote excess (P < 0.08). The percentage of the total genetic variation (F ST) explained by population differences was 5.16. There was genetic differentiation for most pair comparisons between populations (P < 0.05), excepting for Alpine versus Toggenburg, and Toggenburg versus Mosaico Lagunero (P > 0.05). For Saanen and Alpine the frequencies of alleles E and F were similar to the same breeds previously analyzed in Europe. Therefore there are opportunities of increasing the frequency of the strong alleles for protein content Gene Assisted Selection (GAS) in these two breeds. For Toggenburg the most frequent allelic groups were F (0.32) and B* (0.21). Results indicate differentiation between most populations for this locus. Moreover, heterozygote excess in local populations indicated breed admixture.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.11 n.3 20082008-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000300007en10.4067/S0717-34582008000300007 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
CSN1S1 gene frequencies genetic diversity goat milk PCR-RFLP |
| spellingShingle |
CSN1S1 gene frequencies genetic diversity goat milk PCR-RFLP Torres-Vázquez,José Antonio Vázquez Flores,Felícitas Montaldo,Hugo H Ulloa-Arvizu,Raúl Valencia Posadas,Mauricio Gayosso Vázquez,Amanda Alonso Morales,Rogelio Alejandro Genetic polymorphism of the αs1-casein locus in five populations of goats from Mexico |
| description |
With the objective of estimating allele frequencies, and testing for population divergence for the CSN1S1 locus, genotypes of animals from five goat populations; Saanen (n = 97), Alpine (n = 81) Toggenburg (n = 92), local goats with external appearance similar to the Murciana-Granadina breed from Central Mexico (n = 26) and heterogeneous local animals denominated Mosaico Lagunero (n = 30), from Northern Mexico, were identified using PCR and Xmn1 PCR-RFLP methodology. For Saanen, Alpine and Toggenburg, the sum of E and F alleles had the largest frequencies (from 0.468 to 0.789), while for the groups local Murciana-Granadina and Mosaico Lagunero the sum of the most frequent allelic groups (A* and B*), were 0.385 and 0.533 respectively. Both local Murciana-Granadina and Mosaico Lagunero populations showed heterozygote excess (P < 0.08). The percentage of the total genetic variation (F ST) explained by population differences was 5.16. There was genetic differentiation for most pair comparisons between populations (P < 0.05), excepting for Alpine versus Toggenburg, and Toggenburg versus Mosaico Lagunero (P > 0.05). For Saanen and Alpine the frequencies of alleles E and F were similar to the same breeds previously analyzed in Europe. Therefore there are opportunities of increasing the frequency of the strong alleles for protein content Gene Assisted Selection (GAS) in these two breeds. For Toggenburg the most frequent allelic groups were F (0.32) and B* (0.21). Results indicate differentiation between most populations for this locus. Moreover, heterozygote excess in local populations indicated breed admixture. |
| author |
Torres-Vázquez,José Antonio Vázquez Flores,Felícitas Montaldo,Hugo H Ulloa-Arvizu,Raúl Valencia Posadas,Mauricio Gayosso Vázquez,Amanda Alonso Morales,Rogelio Alejandro |
| author_facet |
Torres-Vázquez,José Antonio Vázquez Flores,Felícitas Montaldo,Hugo H Ulloa-Arvizu,Raúl Valencia Posadas,Mauricio Gayosso Vázquez,Amanda Alonso Morales,Rogelio Alejandro |
| author_sort |
Torres-Vázquez,José Antonio |
| title |
Genetic polymorphism of the αs1-casein locus in five populations of goats from Mexico |
| title_short |
Genetic polymorphism of the αs1-casein locus in five populations of goats from Mexico |
| title_full |
Genetic polymorphism of the αs1-casein locus in five populations of goats from Mexico |
| title_fullStr |
Genetic polymorphism of the αs1-casein locus in five populations of goats from Mexico |
| title_full_unstemmed |
Genetic polymorphism of the αs1-casein locus in five populations of goats from Mexico |
| title_sort |
genetic polymorphism of the αs1-casein locus in five populations of goats from mexico |
| publisher |
Pontificia Universidad Católica de Valparaíso |
| publishDate |
2008 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000300007 |
| work_keys_str_mv |
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| _version_ |
1718441786918043648 |