Tag: Ciência Rural

Is there a relation between cell immunity and phenoloxidase activity in bees exposed to stress conditions?

Bees are commonly infected by the deformed wing virus (DWV), which in low titers may be asymptomatic. Researchers discovered a relation between cell immunity and phenoloxidase activity in bees submitted to stress conditions. They demonstrated that this element can serve as an important indicator of bee infections. Read More →

Impaired transport conditions as a cause of respiratory diseases in goats

What is the impact of poor transport conditions on respiratory diseases in goats and other animals? In this study, researchers have shown that there is a clear association between transport stress and the development of bacterial infections in these animals. Read More →

Enzyme endo-β-mannanase is associated with the poor physiological quality of coffee seeds Coffea arabica L.

Endo-β-mannanase enzyme activity may indicate poor physiological quality of dried Coffea Arabica L. coffee seeds. This was the conclusion of a study conducted by researchers of the Brazilian Agricultural Research Company Embrapa Café, in Brasília, in partnership with researchers from the Federal University of Lavras, in Lavras, Minas Gerais, Brazil. Read More →

Electrostatic interaction determines protein coating of alginate microparticles by ionic gelation

Varying the pH significantly influences the protein coating of alginate microparticles by ionic gelation and consequently the protection and release of the encapsulated material. Varying the amount of calcium, on the other hand, did not show influence protein adsorption during the coating phase with a protein layer. These were the results found by researchers from the Federal Technological University of Paraná, in Londrina, and from the Institute of Food Technology, Campinas, São Paulo, Brazil. Read More →

How to produce in vitro plants from scutellum of immature Brazilian wheat embryos

Researchers adapted an in vitro culture regeneration protocol for Brazilian wheat genotypes testing different concentrations of growth regulators 2,4-D and picloram. They also found that BR18-Terena and PF020037 wheat genotypes are the most adaptable for in vitro regeneration by somatic embryogenesis. Read More →

Antimicrobial capacity of lemongrass in food product is proven

Lemongrass may be considered an interesting alternative to obtain extracts rich in bioactive compounds, with antioxidant activity and antimicrobial capacity. This was the conclusion of a study on the extraction of bioactive compounds from lemongrass (Cymbopogon citratus), carried out by researchers from the Federal University of Santa Maria. Read More →

Mexican weed plant Cosmos bipinnatus reduces enteric methane emission from dairy cattle

Small doses of a mexican weed plant called Cosmos bipinnatus are able to reduce enteric methane emissions from dairy cattle. This is the conclusion of a study conducted by researchers from the Universidad Autónoma del Estado de Mexico, in Toluca City, the Universidad de Colima, in Tecoman, Colima, Mexico, and the Molina Center for Energy and the Environment, in La Jolla, California, United States of America. Read More →

Research proposes models for site-specific nitrogen fertilization in spring wheat

The evaluation of the normalized difference vegetation index (NDVI) carried out by active optical canopy sensor can be used for the nitrogen fertilization in a varied dose in wheat, allowing the adjustment and variation of the nitrogen rate applied in different parts of the field. Read More →

What is the most viable way to finish Pantanal lambs?

The finishing systems of pantaneiro lambs in feedlot and semi-feedlot are economically viable activities, since they allow the remuneration of all the factors of production and the invested capital. The internal rates of return of these types of termination are 27% for feedlot systems and 16% for semi-feedlot systems. Read More →

How cropping systems affect soybean yield?

Cropping systems had more than 50% incidence of soybean root rot. Among them, the pasture-soybean-pasture system is the least indicated to be applied in succession to soybean cultivation. The higher compaction of the soil and predisposition to root rot of soybean, caused by the application of the system, caused a loss of 23 kg per hectare of soybean for each 1% in the increase of root rot. These results were collected by researchers from the State University of Santa Catarina (UDESC), in Lages, Santa Catarina, Brazil. Read More →