Impact of polymorphisms in blaZ, blaR1 and blaI genes and their relationship with β-lactam resistance in S. aureus strains isolated from bovine mastitis.

There is not a consensus between the presence of the genotypic resistance marker gene and the phenotypic resistance to β-lactams in Staphylococcus aureus, which means, positive S. aureus blaZ isolates demonstrating sensitivity to β-lactams. The present study aimed to characterize the blaZ, blaR1 and blaI genes, identify and evaluate single nucleotide polymorphisms (SNPs) and their relationship with β-lactam resistance in samples of Staphylococcus aureus obtained from cases of bovine mastitis.

Tannin as a modulator of rumen microbial profile, apparent digestibility and ingestive behavior of lactating goats: A preliminary metagenomic view of goats adaptability to tannin.

The aim with this study was to use interdisciplinary techniques and visions in order to identify the modulating effect of tannins on adaptive factors in lactating goats with different genetic patterns, through the assessment of digestibility and nutrient intake, ingestive behavior and rumen metagenome. We used in this study 8 of the Repartida ecotype and 6 of the Canindé breed goats, on average five years old, distributed in a completely randomized design, in a 2 × 2 factorial design, with two genetic groups and two diets. The applied diets were: basal diet and inclusion of 5% commercial tannin extract in basal diet.

Molecular screening for the mutation associated with canine degenerative myelopathy (SOD1:c.118G > A) in German Shepherd dogs in Brazil.

Canine Degenerative Myelopathy is a late onset recessive autosomal disease characterized by a progressive ascending degeneration of the spinal cord. Two causal mutations are associated with this disease: a transition (c.118G>A) in exon 2 of the SOD1 that was described in several breeds and a transversion (c.

Neospora caninum DNA in feces of crab-eating fox (Cerdocyon thous - Linnaeus, 1776) from northeastern Brazil.

Neospora caninum is an obligate intracellular tissue cyst-forming coccidian parasite and it was first described in dogs. Despite the relevance of wild canids in the transmission chain of N. caninum, there are few studies in Brazil.