Clinical, humoral, and pathologic findings in adult alpacas with experimentally induced Corynebacterium pseudotuberculosis infection     

Braga WU  Chavera AE  González AE 《American journal of veterinary research》2006,67(9):1570-1574

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Recurrent Ventricular Arrhythmia Caused by Ingestion of Aconitum (Monkshood) Flowers     

Francesco Adami  Peter Paganussi  Giovanna Perone  Paola Bera  Giosuè Braga  Carlo Concoreggi 《The Forestry Chronicle》2018,29(3):411-416

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Interaction Study Between Humin and Phosphate: Possible Environmental Remediation for Domestic Wastewater     

Daniella Araujo Vasconcelos de Oliveira  Wander Gustavo Botero  Josué Carinhanha Caldas Santos  Ricardo Moutinho da Silva  Leonardo Machado Pitombo  Janaina Braga do Carmo  Luana Maria Tavares Rosa  Luciana Camargo de Oliveira 《Water, air, and soil pollution》2017,228(7):265

The increase in demand for food due to the rapid population growth in recent years has raised the use of fertilizers, particularly phosphate salts. This fact has contributed to the excess amount of phosphorus species in aquatic systems. This is due to the leaching of these species present in the fertilizers applied to the soil to aquatic environments and may lead to eutrophication in these environments. Substances capable of interacting with the phosphate in the aquatic environment are promising for the reduction on the environmental impact. The humin, an insoluble fraction of humic material, has potential for phosphate retention, behaving like a chelating resin. Thus, the purpose of this research was to study the interaction between humin and phosphate. The equilibrium time between humin and phosphate was 15 min, where hydrogenionic potential (pH) 4.0 was the most effective in the interaction process. In this pH, the humin retained 33% of phosphate added. The complexing capacity of the humin-phosphate system was 11.53 mg g^?1. The adsorption studies indicated that the system follows a kinetic pseudo-second-order model. The Freundlich model was the most suitable to describe the phosphate adsorption process in humin. To evaluate the humin application in real systems, humin was added to the domestic wastewater. Sixteen percent of the total phosphate was adsorbed by the humin. Based on these results, humin has the potential to phosphate retention in domestic wastewater and could be used as a chelating resin minimizing environmental impact.  相似文献   

Predatory activity of the nematophagous fungus <Emphasis Type="Italic">Duddingtonia flagrans</Emphasis> on horse cyathostomin infective larvae     

Fabio R. Braga  Jackson V. Araújo  André. R. Silva  Rogério O. Carvalho  Juliana M. Araujo  Sebastião R. Ferreira  Laércio A. Benjamin 《Tropical animal health and production》2010,42(6):1161-1165

This work was performed to determine the predatory capacity in vitro of the nematophagous fungus Duddingtonia flagrans (isolate AC001) on cyathostomin infective larvae of horse (L₃). The experimental assay was carried out on plates with 2% water-agar (2% WA). In the treated group, each plate contained 1.000 L₃ and 1.000 conidia of the fungus. The control group without fungus only contained 1.000 L₃ in the plates. Ten random fields (4 mm diameter) were examined per plate of treated and control groups, every 24 h for seven days under an optical microscope (10× and 40× objective lens) for non-predated L₃ counts. After 7 days, the non-predated L₃ were recovered from the Petri dishes using the Baermann method. The interaction there was a significant reduction (p < 0.01) of 93.64% in the cyathostomin L₃ recovered. The results showed that the D. flagrans is a potential candidate to the biological control of horse cyathostomin L₃.  相似文献   

Predatory activity of Pochonia chlamydosporia fungus on Toxocara (syn. Neoascaris) vitulorum eggs     

Fabio R. Braga  Sebastião R. Ferreira  Jackson V. Araújo  Juliana M. Araujo  André R. Silva  Rogério O. Carvalho  Artur K. Campos  Leandro G. Freitas 《Tropical animal health and production》2010,42(2):309-314

Toxocara (Neoascaris) vitulorum is a gastrointestinal nematode parasite of young ruminants, responsible for high mortality rates in parasitized cattle and buffalo calves. The objective of this work was to compare the predatory capacity under laboratory conditions of four fungal isolates of the nematophagous fungus Pochonia chlamydosporia (VC1, VC4, VC5 and VC12) on T. vitulorum eggs in 2% water-agar (2% WA). T. vitulorum eggs were plated on 2% WA Petri dishes which contained cultured fungal isolates and control plates without fungi. After 10 and 15 days one hundred eggs were removed and classified according to the following parameters: type 1, biochemical and physiological effect without morphological damage to the eggshell, type 2, lytic effect with morphological alteration of the eggshell and embryo and type 3, lytic effect with morphological alteration of eggshell and embryo in addition to hyphal penetration and internal egg colonization. The fungal isolates were effective in the destruction of T. vitulorum eggs presenting the type 3 effect at 10 and 15 days after contact with the fungus. No nematophagous fungi were observed in the control group during the experiment. There was no variation in the predatory capacity of the fungal isolates (P?>?0.01) at the intervals of 10 and 15 days. These results indicate that P. chlamydosporia (VC1, VC4, VC5 and VC12) negatively influenced the development of T. vitulorum eggs and can be considered a potential candidate for the biological control of nematodes.  相似文献   

Transplacental Transfer of Iron in the Water Buffalo (Bubalus bubalis): Uteroferrin and Erythrophagocytosis     

FTV Pereira  FC Braga  KC Burioli  JR Kfoury Jr  LJ Oliveira  PC Papa  AF Carvalho  CE Ambrósio  FW Bazer  MA Miglino 《Reproduction in domestic animals》2010,45(5):907-914

The objectives of this investigation were to understand transplacental transport of iron by secreted uteroferrin (UF) and haemophagous areas of water buffalo placenta and clarify the role(s) of blood extravasation at the placental‐maternal interface. Placentomes and interplacentomal region of 51 placentae at various stages of gestation were fixed, processed for light and transmission electron microscopy, histochemistry and immunohistochemistry. Haemophagous areas were present in placentomes collected between 4 and 10 months of pregnancy. Perl’s reaction for ferric iron was negative in placentomes, but positive in endometrial glands. Positive staining for UF indicated areas in which it was being taken up by phagocytosis and/or fluid phase pinocytosis in areolae of the interplacentomal mesenchyme, with little staining in endometrial stroma. Imunohistochemistry detected UF in trophectoderm of haemophagous regions of placentomes and in other parts of the foetal villous tree, but the strongest immunostaining was in the epithelial cells and lumen of uterine glands. Ultrastructural analyses indicated that erythrophagocytosis was occurring and that erythrocytes were present inside cells of the chorion that also contained endocytic vesicles and caveolae. Results of this study indicate that both the haemophagous areas of placentomes and the areolae at the interface between chorion and endometrial glands are important sites for iron transfer from mother to foetal‐placental tissues in buffalo throughout pregnancy.  相似文献   

Outcrossing rate in sweet passion fruit based on molecular markers     

T. G. T. Ferreira  H. A. Penha  M. I. Zucchi  A. A. Santos  L. R. Hanai  N. Junqueira  M. F. Braga  R. Vencovsky  M. L. C. Vieira 《Plant Breeding》2010,129(6):727-730

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Sorghum silage supplemented with crambe meal improves dry matter intake and milk production in crossbred Holstein cows     

Saulo Alberto do Carmo Araújo  Guilherme Pires Bicalho  Norberto da Silva Rocha  Cláudia Braga Pereira Bento  Marluci Olício Ortêncio 《Tropical animal health and production》2018,50(1):143-148

We studied the feed intake and milk production of Holstein × Zebu crossbred cows fed sorghum silage diets and concentrates, with and without the addition of crambe meal. Using a change-over design for a total of 120 days, eight cows were fed two diets (concentrates + silages with and without crambe meal) in four 30-day periods, with four replications (animals). The crambe meal diet increased (P < 0.05) the dry matter intake (DMI), crude protein intake (CPI), and non-fibrous carbohydrates intake (NFCI) as well as milk production (4.3%). No difference was noted (P > 0.05) for the milk composition between the treatments. Crambe meal as an additive in sorghum silage (100 g/kg in natural matter) showed a great potential for introduction in dairy farming as it substantially increases CP intake, does not reduce food intake, raises animal productivity, and does not affect milk composition.  相似文献   

An outbreak of poisoning by Kalanchoe blossfeldiana in cattle in northeastern Brazil     

Mendonça  Fábio S.  Nascimento  Naiara C. F.  Almeida  Valdir M.  Braga  Thaiza C.  Ribeiro  Daniele P.  Chaves  Hisadora A. S.  Silva Filho  Givaldo B.  Riet-Correa  Franklin 《Tropical animal health and production》2018,50(3):693-696

Tropical Animal Health and Production - In the world, Kalanchoe species are primarily ornamentals and houseplants, but some have escaped cultivation and can be found in the field. In Latin America,...  相似文献   

Insect Pests     

Ivan Cruz  Maria de Lourdes Corrêa Figueiredo  Rafael Braga da Silva  Ivana Fernandes da Silva  Cristiane deSouza Paula  John E. Foster 《国际虫害防治杂志》2013,59(1):83-87

The fall armyworm, Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae), is a major pest of maize and frequently demands control measures. The timing of insecticide application is a key factor in determining its efficiency, so an experiment was designed to investigate this. Application of insecticide was based on three criteria: (i) the number of trap-caught moths in a Delta-type trap with a commercial sex pheromone lure placed in the center of the target area, soon after plant emergence; (ii) the percentage of plants exhibiting pinhole-type damage (10% or 20%) and (iii) the percentage of plants exhibiting shot hole-type damage (10% or 20%) compared to a check plot without any control measures. We found that the number of trap-caught moths was, compared to the other methods, the best means of deciding on insecticide application in maize to control the fall armyworm. Using pheromone traps, we obtained the best performance of the insecticide Spinosad, causing >90% larval mortality. Without insecticide application, maize yield reduction due to fall armyworm larva damage was 39%.  相似文献