The objective of this study was to evaluate the effects of immunocastration and ractopamine hydrochloride (RAC) supplementation on growth performance and carcass traits of male pigs slaughtered 21 days after the second immunization. Sixty-four pigs (Landrace × Large White, initial body weight 103.05 ± 0.67 kg) were individually tagged and randomly assigned to a 2 × 2 factorial arrangement in a completely randomized design, con...

Aim We investigate the distribution of dispersal modes — endozoochory (via animal ingestion), synzoochory (via animal seed accumulation) and anemochory (via wind)—and seed mass of woody plants across Brazilian ecosystems, testing whether their relative abundance in local plant communities could be predicted by climate, edaphic factors and dispersal agents (e.g., the main vectors moving seeds). We expected climate to be the mai...

Diabetes mellitus (DM) is a chronic metabolic disorder characterized by persistent hyperglycemia that may impair testicular function, including spermatogenesis and steroidogenesis. Creatine, an endogenously synthesized nitrogenous compound and one of the main reservoirs in the testes, is widely used, particularly among men. However, evidence regarding its effects on male reproductive health, especially under DM, remains limite...

Barcarena stands out as an industrial hub in the Eastern Amazon, hosting a range of activities, including industrial operations and urban expansion, that exert intense pressure on riparian forests. These forests play a strategic role in providing ecosystem services such as hydric regulation and product provision. Understanding the structure and floristic diversity of these areas therefore provides insights into environmental m...