The emergence and persistence of plasmid-mediated polymyxin resistance in Brazilian poultry production pose a significant One Health challenge. Here, cloacal swabs from 202 broilers across four farms in the State of Rio de Janeiro yielded 125 Enterobacteriaceae isolates growing on polymyxin-EMB agar. Escherichia coli accounted for 99% of resistant isolates, with one Klebsiella pneumoniae . Multidrug resistance (MDR) was observ...

This study assessed the occurrence of Streptococcus spp. in milk samples from cows with visible clinical mastitis signs and from cows with high (≥ 200,000 cells/mL) or low (< 200,000 cells/mL) somatic cell counts (SCC) across five Brazilian regions. Antimicrobial resistance and virulence-associated genes were investigated using phenotypic assays and whole-genome sequencing (WGS). Among 1,447 milk samples, Streptococcus agalact...

The seasonality of forage production is one of the main challenges in semi-arid regions, where environmental conditions limit agricultural productivity. One promising option is the use of elephant grass ‘BRS Capiaçu’, together with deficit irrigation. This study evaluated the impact of different irrigation depths with brackish water (50%, 75%, 100% and 125% of the reference evapotranspiration – ET 0 ) on the productive, physio...

Adopting resilient practices is crucial to balancing food production and crop sustainability in semiarid regions. Therefore, adopting systems that provide greater stocks of water, carbon, and nutrients at the soil-plant interface is crucial. The objective of this study was to assess water, carbon, and nutrient stocks in the soil-plant systems of irrigated forage crops in the semiarid region of Brazil. The study was conducted i...

Tropical forests, particularly the Atlantic Forest, are among the most biodiverse and threatened ecosystems on Earth. Intense fragmentation, historical deforestation, and climate change have compromised their integrity and endangered endemic and rare species. The situation is even more critical in the Doce River Basin (DRB), a biodiversity hotspot in southeastern Brazil, due to the expansion of pastureland and mining, as well...

The genus Amblyomma koch, 1844 contains approximately 138 species, which are mainly distributed in the Afrotropical, Oriental, Neotropical and Australasian zoogeographic regions. This is an important group of arthropod vectors responsible for transmitting a wide range of etiological agents that cause infections and diseases in humans and animals, and is therefore of great interest to public and veterinary health.This study des...

Beef and dairy production from cattle farming operate under two main systems: feedlot and pasture based systems, both of which are potentially associated with deforestation due to feed-crop cultivation and pasture expansion. Poor pasture management and ongoing land conversion further exacerbate environmental degradation, posing a significant global conservation challenge. Agricultural innovations such as silvopastoral systems...

This study aimed to evaluate the effects of atenolol administration on salivary gland structure, redox status, and sialochemical composition in male rats. Male Wistar rats (Rattus norvegicus), aged 90 days, were randomly assigned to two groups: a control group receiving distilled water and an atenolol-treated group receiving 20 mg/kg/day by orogastric gavage for 30 days. On day 31, the animals were anesthetized, saliva was col...

Fuscoporia ( Hymenochaetaceae ) is a genus of wood-decaying polypores widely distributed in tropical and temperate forests. Despite recent advances, its taxonomy remains challenging, especially for resupinate species. In this study, we describe three new resupinate species of Fuscoporia from Brazil combining morphological and phylogenetic analyses using ITS and nrLSU markers. The new taxa F. bahiana and F. serrana are placed w...

In the face of climate change, agricultural modelling combined with experimental research is essential for predicting yields in diverse climatic scenarios. This study calibrated, validated and applied the AquaCrop model for forage sorghum under future climate scenarios in a semi‐arid region between 2020 and 2022. Meteorological data, soil moisture, canopy cover and crop productivity were collected. Model performance was evalua...

Lactiplantibacillus plantarum M2, previously isolated from the Amazonian fruit Humiria balsamifera , has shown a promising probiotic profile. This study performed an integrated safety evaluation combining genome-informed analyses with a 28-day repeated-dose oral toxicity assessment in a murine model. In silico genome screening revealed no detectable signatures associated with pathogenicity, virulence, or acquired antimicrobial...