Premunição da Coccidiose em Frango Caipira Melhorado

Avaliou-se no presente trabalho a indução da premunição natural à  coccidiose de frangos caipiras melhorados, para produção de animais biologicamente corretos. O experimento foi realizado dentro de um sistema semi-intensivo e teve duração de 63 dias. Utilizou-se 168 animais, divididos em 3 tratamentos com 4 repetições cada um, em 3 blocos e delineamento em blocos ao acaso com repetição. O tratamento testemunha foi submetido a anticoccídico na ração e os tratamentos (T1) e (T2) não receberam anticoccídico na ração. Os animais do (T1), quando transferidos da criadeira tipo bateria para o piso, foram imediatamente soltos para serem submetidos à  agressão do ambiente; os animais do (T2) foram mantidos por 10 dias no box. Acompanhou-se o desenvolvimento da contaminação natural de coccídias por meios da contagem de oocistos em câmara Mc Master e da consideração dos escores de lesão após necropsia final. Fez-se a pesagem das aves em balança de precisão semi-analítica e verificou-se as respectivas mortalidades. De acordo com as análises de variância os índices zootécnicos, ganho de peso e viabilidade, não apresentaram diferenças significativas. Quanto ao escore de lesões houve influência tanto nos tratamentos quanto nos blocos, escores de lesões em (T1) e em (T2) foram semelhantes entre em si e diferentes do testemunha. Observou-se aos 63 dias de idade, que as aves do testemunha, sofreram maior agressão gastrintestinal do que as do (T2), sugerindo o começo de uma premunição. O resultado do oocistograma feito aos 63 dias de idade não mostrou correlação entre o material examinado, cama de frango, e as lesões então observadas no trato intestinal

Brazilian Flora 2020: Leveraging the power of a collaborative scientific network

International audienceThe shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impediment and the biodiversity crisis are widely recognized, highlighting the urgent need for reliable taxonomic data. Over the past decade, numerous countries worldwide have devoted considerable effort to Target 1 of the Global Strategy for Plant Conservation (GSPC), which called for the preparation of a working list of all known plant species by 2010 and an online world Flora by 2020. Brazil is a megadiverse country, home to more of the world's known plant species than any other country. Despite that, Flora Brasiliensis, concluded in 1906, was the last comprehensive treatment of the Brazilian flora. The lack of accurate estimates of the number of species of algae, fungi, and plants occurring in Brazil contributes to the prevailing taxonomic impediment and delays progress towards the GSPC targets. Over the past 12 years, a legion of taxonomists motivated to meet Target 1 of the GSPC, worked together to gather and integrate knowledge on the algal, plant, and fungal diversity of Brazil. Overall, a team of about 980 taxonomists joined efforts in a highly collaborative project that used cybertaxonomy to prepare an updated Flora of Brazil, showing the power of scientific collaboration to reach ambitious goals. This paper presents an overview of the Brazilian Flora 2020 and provides taxonomic and spatial updates on the algae, fungi, and plants found in one of the world's most biodiverse countries. We further identify collection gaps and summarize future goals that extend beyond 2020. Our results show that Brazil is home to 46,975 native species of algae, fungi, and plants, of which 19,669 are endemic to the country. The data compiled to date suggests that the Atlantic Rainforest might be the most diverse Brazilian domain for all plant groups except gymnosperms, which are most diverse in the Amazon. However, scientific knowledge of Brazilian diversity is still unequally distributed, with the Atlantic Rainforest and the Cerrado being the most intensively sampled and studied biomes in the country. In times of “scientific reductionism”, with botanical and mycological sciences suffering pervasive depreciation in recent decades, the first online Flora of Brazil 2020 significantly enhanced the quality and quantity of taxonomic data available for algae, fungi, and plants from Brazil. This project also made all the information freely available online, providing a firm foundation for future research and for the management, conservation, and sustainable use of the Brazilian funga and flora

Characterisation of microbial attack on archaeological bone

As part of an EU funded project to investigate the factors influencing bone preservation in the archaeological record, more than 250 bones from 41 archaeological sites in five countries spanning four climatic regions were studied for diagenetic alteration. Sites were selected to cover a range of environmental conditions and archaeological contexts. Microscopic and physical (mercury intrusion porosimetry) analyses of these bones revealed that the majority (68%) had suffered microbial attack. Furthermore, significant differences were found between animal and human bone in both the state of preservation and the type of microbial attack present. These differences in preservation might result from differences in early taphonomy of the bones. © 2003 Elsevier Science Ltd. All rights reserved

Núcleos de Ensino da Unesp: artigos 2008

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq