EVZ - Escola de Veterinária e Zootecnia
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A Escola de Veterinária e Zootecnia (EVZ), da Universidade Federal de Goiás, oferece os cursos de Medicina Veterinária e Zootecnia. Além de Especialização em: Tecnologia de Produtos de Origem Animal; e, Zootecnia.
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Item Estrutura populacional e diversidade genética de raças bovinas brasileiras localmente adaptadas(2014) Egito, Andréa Alves do; Lara, Maria Aparecida Cassiano; Albuquerque, Maria do Socorro Maues; Martinez, Amparo Martinez; Landi, Vincenzo; Juliano, Raquel Soares; Delgado, Juan Vicente; Fioravanti, Maria Clorinda SoaresAs the aim of investigating the population structure of Brazilian bovine locally adapted breeds, 237 individuals from Caracu (n = 50), Creole Lageana (n = 39), Curraleira (n = 50), Mocha Nacional (n = 50) and Pantaneira breeds (n = 48) were genotyped with 28 microsatellite loci chosen from lists of FAO / ISAG and BIOBOVIS project. Indices of genetic diversity were calculated by FSAT program and the genetic population structure was obtained based on Bayesian analysis implemented by the STRUCTURE program. There was a significant genetic differentiation (p <0.05) between breeds studied, the percentage of variation among populations was 4.64%. In general the expected heterozygosity was higher than observed heterozygosity (0.751 vs 0.696). The Creole Lageana breed showed the highest allelic richness (8.9) while the lowest was observed in the Caracu breed (7.07). The greatest FIS was observed in Curraleira (0.106) and the smallest in the Mocho National (0.035). By the Bayesian analysis one could observe that Curraleira and Pantaneira breeds share the largest number of alleles while Caracu quickly distinguished from the others. The results are consistent with the history of the formation of these populations after their introduction in Brazil by the colonizers. Moreover, it appears that populations which are inserted in breeding programs, such as Caracu, have less genetic diversity when compared with the other, although this does not necessarily reflect an increase of inbreeding in the population. In Curraleiro breed high levels of inbreeding may reflect the need for exchanges between the different breeding farms sampled.Item Origem e diversidade genética materna de populações de bovinos da raça curraleira de diferentes regiões do Brasil(2011) Egito, Andréa Alves do; Fioravanti, Maria Clorinda Soares; Grattapaglia, Dário; Ramos, Alexandre Floriani; Albuquerque, Maria do Socorro Maues; Mariante, Arthur da SilvaAnalysis of mitochondrial DNA (mtDNA) has been used as a molecular tool for understanding the origin and nature of domestication processes, analysis of dispersal and gene flow, analysis of demographic expansion, genetic drift and admixture between populations. The Curraleiro bovine breed was originated in the animals introduced by the Iberian settlers and became adapted to the sanitary conditions, climate and management found in Brazil. The objective of this study was to investigate the genetic diversity of this breed by sequencing and analysis of mtDNA control region. We analyzed twelve animals from five distinct regions. Three haplogroups were observed: two of African taurine origin (AA and T1) and one of European taurine origin (T3). The nucleotide diversity observed was 0.013. The highest haplotype diversity was observed within populations (0.012) and not between populations (0.001). The differentiation index observed was 0.074. No significant genetic differences were found among populations in different regions. It was concluded that the Curraleiro populations have the same maternal origin and suffered influence of African taurine animals.Item Situação atual do banco de DNA de recursos genéticos animais no Brasil(2005) Egito, Andréa Alves do; Albuquerque, Maria do Socorro Maues; Castro, Silvia Tereza Ribeiro; Paiva, Samuel Rezende; Marques, José Ribamar Felipe; McManus, Concepta Margaret; Mariante, Arthur da Silva; Abreu, Urbano Gomes Pinto; Santos, Sandra Aparecida; Sereno, José Robson Bezerra; Fioravanti, Maria Clorinda Soares; Vaz, Clara Marineli Silveira Luiz; Nobre, Fernando Viana; Carvalho, José Herculano de; Costa, Maria Rosa; Ribeiro, Maria Norma; Lara, Maria Aparecida CassianoEx situ conservation include the cryopreservation of genetic material: semen, oocytes, embryos, somatic cells and DNA (FAO, 1998). Although, it is not possible to regenerate whole animals from isolated DNA, it has been proved that DNA banking was useful in population genetic studies and epidemiological investigations. The Animal Genetics Laboratory (AGL) at Embrapa Genetic Resources and Biotechnology - Cenargen, Brasília - DF, Brazil, works with genetic characterization of animal populations that belong to the Brazilian conservation program. At the same time, a DNA Bank is being set up, which already has samples from several animals species. The DNA was extracted from cryopreserved leukocyte pellets or buffy coats. After extraction it was quantified and checked for its integrity and quality. Each specimen extracted was divided in at least two samples. One of them was used for characterization studies (-20°C) while the other was stored at - 80°C at the DNA bank. All animals that were collected received a code number and were catalogued in a data bank where all the available information was registered. The refinement of molecular biology techniques increase the usefulness of banked material that will provide a ready reservoir of valuable scientific information. At this time, the AGL DNA bank has specimens of several breeds of six domestic species. Most of these breeds are in risk of extinction and are involved in the Conservation Program of Embrapa/ Cenargen. DNA banking is proving to be useful for characterization of domestic animal populations that are in Brazilian conservation program. In near future, it might be the method of choice when many representatives of a breed are to be stored.