Low genetic diversity associated with low prevalence of Anaplasma marginale in water buffaloes in Marajo Island, Brazil

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Produção de leite, duração da lactação e intervalo de partos em búfalas mestiças Murrah

This study aimed to evaluate the potential for milk production (MP), lactation length (LL) and calving interval (CI), analyze the environmental component affecting these traits, and to estimate the heritability and repeatability for milk production in crossbreds of Murrah buffalo cows in the state of Alagoas, Brazil. Data was composed of 487 observations of MP from 136 lactations recorded between the years of 2000 and 2010. In the analysis of variance for PL, the fixed effects were season (1- October to March, 2 -April to September) and year of the beginning of lactation, calving order and the LL (covariate). For the analysis of LL only the fixed effect of year of the beginning of lactation was included, and finally for the CI analysis, year of the beginning of lactation and calving order. The estimates of covariance were obtained using unicharacteristic analysis by Bayesian inference method, applyingan animal model, through Gibbs sampling. The additive genetic, permanent environment and residual effects were included as random effects in the model. The averages (sd) of MP, LL and CI were 2,218.03 kg (408.18), 282.59 days (39.48) e 422.49 days (91.05), respectively. All the effects included in the models were important (P<0.01). The estimates of heritability and repeatability for PL were 0.29 and 0.69, respectively. The results suggest that there is a moderate genetic variability among individuals for PL, indicating the possibility to obtain gain using selection.

Estudo fenotípico e genotípico da produção de biofilme por Staphylococcus aureus isolados de leite bubalino e ambiente de ordenha

Pós-graduação em Microbiologia Agropecuária - FCAV

Análise comparativa de genes das caseínas de búfalo

Pós-graduação em Genética e Melhoramento Animal - FCAV

Análise molecular de estirpes de Escherichia coli enteropatogênica (EPEC) isoladas de animais e humanos

Pós-graduação em Microbiologia Agropecuária - FCAV

João Gilberto Noll, leitor de Clarice Lispector

João Gilberto Noll, in Afã, a 129-word microfiction, mentions an episode of the short story O buffalo, by Clarice Lispector. We studied, in this article, the structure of that micro narrative and the way how João Gilberto Noll reveals himself as being a Clarice Lispector’s reader.

Diversidade e evolução da microbiota lática autóctone em queijo Muçarela de búfala e aplicação tecnológica dos isolados

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Trueperella pyogenes multispecies infections in domestic animals: a retrospective study of 144 cases (2002 to 2012)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

The interval between the emergence of pharmacologically synchronized ovarian follicular waves and ovum pickup does not significantly affect in vitro embryo production in Bos indicus, Bos taurus, and Bubalus bubalis

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Random regression models for milk, fat and protein in Colombian Buffaloes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Short communication: Variable number of tandem repeat polymorphisms in DGAT1 gene of buffaloes (Bubalus bubalis) is associated with milk constituents

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Polymorphisms in Oxytocin and alpha(1a) Adrenergic Receptor Genes and Their Effects on Production Traits in Dairy Buffaloes

The use of molecular markers may auxiliary the buffalo breeding. The oxytocin (OXT) and the adrenergic receptor alpha(1A) (ADRA1A) may be involved in milk ejection in ruminants. The aim of this study was to verify the existence of polymorphisms in the OXT and ADRA1A genes and their associations with milk production traits. A total of 220 buffaloes were genotyped using PCR-RFLP for both genes. The SNP identified in the ADRA1A gene was associated with protein percentage in dairy buffaloes. This is the first report of such association in the literature, which has not been studied in other species.

Prevalence survey of selected bovine pathogens in water buffaloes in the north region of Brazil

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Molecular characterization of interferon regulatory factor 1 in Bubalus bubalis

Interferon regulatory factor 1 (IRF1) is functionally diverse in the regulation of immune response and is considered to be an important candidate gene for studying disease susceptibility in mammals. In this paper, we characterized the whole sequence of the IRF1 gene in river buffalo (Bubalus bubalis) and compared genomic and the amino acid sequences between different species. The buffalo IRF1 gene was 7099 bp long and organized into 10 exons and nine introns. Its molecular structure showed exactly the same number of exons (10) and introns (nine) in bovids, mice, horses, humans, and chickens. However, rats did not have exon 5, but had the largest exon 4, which suggests that exon 5 was incorporated into exon 4. The coding and the amino acid sequences of the gene showed that identity varied from 73 to 99% at the coding sequence level and from 61 to 100% at the amino acid level when compared with other mammals and chickens. Comparative analysis of the gene sequence between two different buffalo breeds, Murrah and Mediterranean, revealed six potential SNPs that are primarily located in the 5' and 3'UTRs.

Prospecting major genes in dairy buffaloes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)