Use este identificador para citar ou linkar para este item:
http://hdl.handle.net/1843/83391| Tipo: | Artigo de Periódico |
| Título: | Polymorphism of the beta-casein gene in holstein-zebu cows in the north of Minas Gerais, Brazil |
| Autor(es): | Geziella Aurea Aparecida Damasceno Souza Alessandra Rejane Ericsson de Oliveira Anna Christina de Almeida Mauro Aparecido de Sousa Xavier |
| Resumo: | This study aimed to investigate A1 and A2 polymorphisms of the beta-casein gene in crossbred Holstein-Zebu (HZ) cows from four herds in Northern Minas Gerais, Brazil. Blood samples were collected from 112 randomly selected cows, of wich 66 were at ½ HZ, and 46 were at ¾ HZ. DNA extraction was conducted using the phenol-chloroform method, and polymorphisms were evaluated using the amplification refractory mutation system - polymerase chain reaction technique. The results demonstrated that 72/112 (64.3%) cows were heterozygous (A1A2), 33/112 (29.5%) were homozygous for A2A2, and 7/112 (6.2%) were A1A1 homozygous. The percentage of A2A2 cows ranged from 10.7 to 41.4% among the evaluated herds. The frequencies of the A1 and A2 alleles were 38.4 and 61.6%, respectively. The A2 allele was the most frequent in both breeds. The ½ HZ cows were 1.8 times more likely (Odds Ratio) to belong to the A1A1 genotype. The distribution of genotypes was in Hardy-Weinberg equilibrium in three of the herds; however, the total of samples and the stratified samples according to breeds were not in equilibrium considering α = 0.05. |
| Assunto: | Bovino de leite Bovino de leite -- Desempenho Reação em cadeia de polimerase Leite -- Produção |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Tipo de Acesso: | Acesso Aberto |
| Identificador DOI: | https://doi.org/10.29367/tv7af190 |
| URI: | http://hdl.handle.net/1843/83391 |
| Data do documento: | 2024 |
| metadata.dc.url.externa: | https://revista.sodebras.com.br/index.php/revista/article/view/31 |
| metadata.dc.relation.ispartof: | Sodebras |
| Aparece nas coleções: | Artigo de Periódico |
Arquivos associados a este item:
| Arquivo | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| Polymorphism of the beta-casein gene in holstein-zebu cows in the north of Minas Gerais, Brazil.pdf | 3.01 MB | Adobe PDF | Visualizar/Abrir |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.