The use of drugs/pharmaceuticals in cattle rearing is the object of a recent study, carried out by two researchers from the Centro de Estudos Farmacêuticos, Laboratório de Bromatologia, Hidrologia e Nutrição (Pharmaceutical Study Centre, Bromatology, Hydrology and Nutrition Laboratory) at the Pharmacy Faculty of Coimbra University. The consequences for consumers are, from a public health standpoint, the most significant conclusions to take from an exhaustive work of literary revision in these matters, started in 2000.
The fat content contained in the meat has been a concern for consumers, for reasons of health and diet, who consider it an unnecessary nutrient, or rather, best avoided. For this reason producers attempt to improve the return on their activities by producing more and better lean meat, and in the shortest possible space of time. In this context, the quantity of drugs/ pharmaceuticals used to promote animal growth has been increasing exponentially, especially connected to forms of intensive methods of farming, which has meant an increase in the availability of foods, but in the meanwhile it has also meant the presence of the residues of these products in not insignificant levels in meat.
The researchers Fernando Ramos and Maria Irene Noronha da Silveira have dedicated themselves to the study of the use of a group of pharmaceuticals known as andrenergic agonists b2. Part of the work of the authors – published in the Revista Portuguesa de Ciências Veterinárias (Portuguese Veterinary Science Magazine) in the Summer of 2002 – concentrates on the use of those substances in the average daily weight increase of chickens, swine, sheep and bovines, specifically the increase in muscle mass and the decrease of body fat. In fact, the andrenergic agonists b2 facilitate the production of leaner meat, but not without consequences, be it at a zootechny level, be it at levels of toxins for consumers. There have already been three cases of poisoning of groups of people in Portugal, between 1998 and 2001, and similar situations occurred in Spain, France and Italy in the last decade.
Fernando Ramos | alfa
New malaria analysis method reveals disease severity in minutes
14.08.2017 | University of British Columbia
New type of blood cells work as indicators of autoimmunity
14.08.2017 | Instituto de Medicina Molecular
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
18.08.2017 | Life Sciences
18.08.2017 | Physics and Astronomy
18.08.2017 | Materials Sciences