Please use this identifier to cite or link to this item:
http://hdl.handle.net/1843/83391| Type: | Artigo de Periódico |
| Title: | Polymorphism of the beta-casein gene in holstein-zebu cows in the north of Minas Gerais, Brazil |
| Authors: | Geziella Aurea Aparecida Damasceno Souza Alessandra Rejane Ericsson de Oliveira Anna Christina de Almeida Mauro Aparecido de Sousa Xavier |
| Abstract: | 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. |
| Subject: | Bovino de leite Bovino de leite -- Desempenho Reação em cadeia de polimerase Leite -- Produção |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Rights: | Acesso Aberto |
| metadata.dc.identifier.doi: | https://doi.org/10.29367/tv7af190 |
| URI: | http://hdl.handle.net/1843/83391 |
| Issue Date: | 2024 |
| metadata.dc.url.externa: | https://revista.sodebras.com.br/index.php/revista/article/view/31 |
| metadata.dc.relation.ispartof: | Sodebras |
| Appears in Collections: | Artigo de Periódico |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Polymorphism of the beta-casein gene in holstein-zebu cows in the north of Minas Gerais, Brazil.pdf | 3.01 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.