Variability of the β-casein gene polymorphism in Curraleiro Pé-Duro cattle: a geographical genetics approach

Autor: Marcelo Corrêa da Silva, Ana Beatriz Bezerra Souza, José Bento Sterman Ferraz, Fernando Oliveira Bussiman, Matheus Henrique Dias Rodrigues, Susana Queiroz Santos Mello, Rachel dos Santos Bueno, Minos Esperandio de Carvalho, Raryanne Dias Folhas, Helcileia Dias Santos, Leandro Lopes Nepomuceno, Jorge Luís Ferreira
Rok vydání: 2022
Předmět:
Zdroj: Tropical Animal Health and Production. 54
ISSN: 1573-7438
0049-4747
DOI: 10.1007/s11250-022-03375-5
Popis: This study purposes to examine the distribution of A2A2 alleles in herds of Curraleiro Pé-Duro (CPD) cattle and test association patterns with geographical and municipal development data. Eight CPD herds were selected from the municipalities of Tocantins State, Brazil. The frequency of the A1 and A2 allele was 40.0 and 60.0%, and the frequencies of genotypes A1A1, A1A2, and A2A2 were 20.0, 39.0, and 41.0%, respectively. Correlation estimates supported that the preferred genotype (A2A2) was mostly present in the relatively higher developed mesoregion (West) (P 0.05). However, genotypic frequencies varied at random according to human population of municipalities and human development index (P 0.05). The evaluation of the variability of the β-casein gene polymorphism, coupled with spatially explicit methods (spatial autocorrelation, mantel test, and interpolation procedures), revealed some level of spatial dependency. The results suggest that the production of A2A2 milk in indigenous CPD cattle is feasible. This will depend on the adoption of selection schemes.
Databáze: OpenAIRE
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