Efeito da seleção quanto ao peso corporal nas características reprodutivas em linhagens de frangos de corte

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Efeito de Diferentes Níveis de Manganês e Fósforo Sobre o Desempenho e a Qualidade da Casca dos Ovos de Poedeiras Comerciais

The objective of this experiment was to evaluate the different levels of manganese and phosphorus (P) on the performance and eggshell quality and on determined blood constituents of 96 laying hens Hy-Line W36, with 60 weeks of age, distributed in 24 lots with four hens each. A completely randomized experimental design was used in a factorial arrangement (3x2), manganese levels (70, 140 and 210 ppm) and total phosphorus levels (.35 and .55%), totalizing six treatments with four replicates each. The experimental diets were isoproteic (16.0% CP), isocaloric (2800 kcal ME/kg), isocalcium (4.0% Ca) and isosodium (.16% Na). The manganese levels did not alter the production and eggshell quality. However, when hens were fed diets containing .35% of total P, there were observed decreases in the egg production, egg weight and egg mass, without alterations in eggshell quality characteristics. The supplemental manganese levels were not effective to improve eggshell quality at the final phase of production. The total phosphorus level of .35% was inadequate for the laying hens to express the normal production characteristics.

Biological aspects of Amblyomma brasiliense (Acari: Ixodidae) under laboratory conditions

Although Amblyomma brasiliense Aragão 1908 has been reported as one of the most aggressive ticks to humans in Brazil, information about the biology of this tick species is virtually inexistent. This work reports data on the life cycle of A. brasiliense fed on rabbits and pigs and maintained in an incubator at 20°C, 90% RH and 12 h of light for off-host development. Tick yield of adult females fed on pigs and rabbits was 81.2% and 58.3%, respectively. Females fed on pigs had mean engorgement weight of 862.3 mg and egg mass of 208 mg, while females fed on rabbits had mean engorgement weight of 606.1 mg and egg mass of 160 mg; these values did not differ statistically between host species. Feeding period of female ticks fed on pigs (10 days) was significantly shorter than that on rabbits (17 days). Mean preoviposition period was slightly longer (35.9 days) for ticks fed on pigs than on rabbits (30 days). The minimum incubation period of eggs of ticks from both host species was similar and over 100 days. Egg production efficiency was low for females fed on both hosts (less than 30% and 20% for ticks from pigs and rabbits, respectively). More than 55% of larvae and 79% of nymphs fed on rabbits, set free inside the feeding chambers, engorged successfully. These ticks attained an engorgement weight of 1.3 and 18.2 mg, respectively, and fed for approximately 5 days. The minimum pre-molt period was 30 days for engorged larvae and over 44 days for nymphs. Molting success was low, less than 50% in the case of larvae and less than 20% for nymphs. Further studies are required to better determine the off-host requirements of this tick species. © 2008 Springer Science+Business Media B.V.

Efeito dos níveis de triptofano digestível em dietas para codornas japonesas em postura

The adequate level (0.12, 0.16, 0.20, 0.24, and 0.28%) of the dietary digestible tryptophan was evaluated in 400 laying Japanese quail from 21 to 30 weeks old. The animals were housed in laying cages, with initial weight of 158.50 g and egg production average of 84.50%. A completely randomized blocks design, with eight blocks, five diets, eight replicates of ten birds per replicate and three experimental periods of 21 days each was used. Feed intake (g/bird/day), digestible tryptophan intake (mg/bird/day), egg production (%/bird/day), egg weight (g), egg mass (kg/bird/day) and feed conversion (kg feed intake per kg eggs and dozen eggs) were the characteristics evaluated. Only the characteristics digestible tryptophan intake and egg production rate show significant effects of digestible tryptophan levels in the diets. Performance response of the Japanese quails in posture, regarding the adjustment obtained through models of linear regression and broken-line regression model, and the biological interpretation, allow to conclude that to obtain the best productive performance, the Japanese quails diets should contain the level of 0.21% digestible tryptophan, that results in a daily intake of 45.0 mg/ bird of digestible tryptophan, corresponding to the digestible tryptophan: digestible lysine ratio of 21%. © 2008 Sociedade Brasileira de Zootecnia.

Formação de biofilme cristalino de Proteus mirabilis em cateter urológico

The indwelling urethral catheter has an important role for patients with urinary retention, bladder obstruction, neurological damage and other diseases. Urine contains minerals which precipitate in alkaline pH, crystallize and block the urological catheter. The crystallization of the ionic components of urine occurs in the presence of urease, an enzyme produced by Proteus mirabilis. This bacterium adheres to inanimate surfaces and forms biofilms. The aim of this study was to investigate the formation of crystalline biofilm on the luminal surface of siliconized latex catheters by means of scanning electron microscope, after channeling artificial urine infected with Proteus mirabilis. The experiment was performed in vitro using a dynamic flow system. The artificial urine compounds were salts of calcium, magnesium, phosphates, urea and egg albumin, and it was infected with Proteus mirabilis ATCC 25933. The urine flow was stopped after crystallization of the ionic components. Crystallization was observed after alkalinization of urine. Scanning electron microscopy showed the presence of crystals and morphologies typical of bacilli embedded in an amorphous mass on the internal lumen of the catheter. The present study showed that catheter encrustation may limit the use of long-term indwelling catheter. © SBEB - Sociedade Brasileira de Engenharia Biomédica.

Suplementação de selênio orgânico em dietas de reprodutores de tilápia-do-Nilo (Oreochromis niloticus)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Tamanho, produção de ovos e distribuição espacial de microcrustáceos litorâneos e limnéticos em pequenos reservatórios rasos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Aranhas (Arachnida, Araneae) sobre bromélias em um remanescente de Mata Atlântica no estado do Espírito Santo: associações específicas, arquitetura das bromélias e estrutura de comunidades

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Anatomia, histologia, histoquímica e ultra-estrutura das glândulas salivares cefálicas de abelhas eussociais (Hymenoptera, apidae): Silvana Beani Poiani. -

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Eficácia de extratovegetais em nematódeos parasitas: avaliação invitro em Haemonchus contortud e avaliação in vitro em Strongyloides venezuelensis

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação de diferentes programas de restrição alimentar para matrizes pesadas

Pós-graduação em Zootecnia - FCAV

Procedimentos pedagógicos no ensino fundamental voltados para a prevenção de quedas acidentais

Pós-graduação em Educação - FFC

Performance de Trichogramma pretiosum Riley, 1879 e T. exiguum Pinto & Platner, 1978 (Hymenoptera: trichogrammatidae) em ovos de populações de Plutella xylostella (LINNAEUS, 1758) (Lepidoptera: Plutellidae) sob ação de Bacillus thuringiensis Berliner, 1915 (Bacillales: Bacillaceae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Bioecologia e capacidade predatória de Coccinellidae (Insecta: Coleoptera) alimentado com Schizaphis graminum (Rondani) (Hemiptera: Aphididae)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Variabilidade populacional de Plutella xylostella (L., 1758) (Lepidoptera: Plutellidae) e suscetibilidade a Bacillus thuringiensis Berliner

Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV