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Search Results: 1 - 10 of 282531 matches for " Jo?o Rafael De Conte Carvalho; Zinger "
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PRIVA??O DE HOSPEDEIRO E ALIMENTA??O SOBRE AS CARACTERíSTICAS REPRODUTIVAS DE TRICHOGRAMMA ATOPOVIRILIA (HYMENOPTERA: TRICHOGRAMMATIDAE)
Rodrigues Vianna,Ulysses; Pratissoli,Dirceu; Cola Zanuncio,José; De Conte Carvalho de Alencar,Joo Rafael; Zinger,Fernando Domingo;
Idesia (Arica) , 2010, DOI: 10.4067/S0718-34292010000200010
Abstract: the effect of time different periods was compared without host in the trichogramma atopovirilia (hym.: trichogrammatidae) reproducitive characteristics fed or not. anagasta kuehniella (lepidoptera: pyralidae) and sitotroga cerealella (lepidoptera: gelechiidae) eggs they were used as hosts, being exposed to that parasitoid females after 0, 6, 12, 24, 36, 48, 60, 72, 84 or 96 hours. t. atopovirilia females, fed and sponged the hosts eggs up to 96 hours without the same ones. however, the parasitism happened until the period of 24 hours in a. kuehniella and 48 hours with s. cerealella when not fed. the t. atopovirilia parasitism, the emergency and the sexual reason were similar in a. kuehniella eggs, but with the increase of the period without that host, it decreases along the time, with s. cerealella in a similar way it was observed for those not fed. the food was the principal factor that affected in the t. atopovirilia parasitism.
Selection of Beauveria bassiana (Bals.) Vuill. isolates for controlling Sitophilus zeamais (Mots.) (Coleoptera: Curculionidae)
Rondelli,Vando Miossi; de Carvalho,José Romário; Pratissoli,Dirceu; Polanczyk,Ricardo Antonio; de Alencar,Joo Rafael De Conte Carvalho; Zinger,Fernando Domingo; Pereira,Sara Maria Andrade;
Idesia (Arica) , 2012, DOI: 10.4067/S0718-34292012000300013
Abstract: sitophilus zeamais (mots.) (coleoptera: curculionidae) is considered a major pest of maize, responsible for reducing grain quality and making the corn inappropriate for industrial use and human consumption. s. zeamais has been controlled exclusively with chemical products. the objective of this research was to select isolates of beauveria bassiana (bals.) vuill. to control s. zeamais. beetles were immersed in conidia suspensions of each isolate for five seconds and placed in a gerbox container with maize grains. in pathogenicity tests, the isolates that caused the highest mortality to the maize weevil were esalq-447 (68.0%), cca-ufes/ bb-36 (57.3%) and cca-ufes/bb-31 (51.3%). esalq-447 was the most virulent, with an lc50 of 1.7 x 107 conidia/ml and shows promise for controlling maize weevils. these isolates of b. bassiana can be used as effective substitutes for conventional chemical control, normally carried out with phosphine. further tests should be performed under field and semi-field conditions to develop an appropriate strategy for the use of this entomopathogen to manage s. zeamais.
Parasitism Capacity of Trichogramma pretiosum and Trichogramma acacioi (Hym.: Trichogrammatidae) on eggs of Sitotroga cerealella (Lep.: Gelechiidae)
Pratissoli, Dirceu;Zanuncio, José Cola;Vianna, Ulysses Rodrigues;Andrade, Josimar Souza;Zinger, Fernando Domingo;Alencar, Joo Rafael de Conte Carvalho de;Leite, Germano Le?o Demolin;
Brazilian Archives of Biology and Technology , 2008, DOI: 10.1590/S1516-89132008000600021
Abstract: the objective of this work was to evaluate the parasitism capacity of trichogramma pretiosum riley and t. acacioi brun, moraes and soares (hymenoptera: trichogrammatidae) in eggs of the alternative host sitotroga cerealella (olivier) (lepidoptera: gelechiidae) aiming to use both species in biological control programs of nipteria panacea tierry-mieg (lepidoptera: geometridae). the parasitism rhythm and total parasitism of these parasitoid species were affected by the temperature with higher values during the first 24 h of their life. parasitism period was longer for t. pretiosum and t. acacioi at the lowest temperature.
PRIVA O DE HOSPEDEIRO E ALIMENTA O SOBRE AS CARACTERíSTICAS REPRODUTIVAS DE TRICHOGRAMMA ATOPOVIRILIA (HYMENOPTERA: TRICHOGRAMMATIDAE) HOST AND FEEDING PRIVATION ON THE TRICHOGRAMMA ATOPOVIRILIA (HYMENOPTERA: TRICHOGRAMMATIDAE) REPRODUCTIVE CHARACTERISTICS
Ulysses Rodrigues Vianna,Dirceu Pratissoli,José Cola Zanuncio,Joo Rafael De Conte Carvalho de Alencar
IDESIA , 2010,
Abstract: Comparou-se o efeito de diferentes períodos de tempo sem hospedeiro nas características reprodutivas de Trichogramma atopovirilia (Hymenoptera: Trichogrammatidae) alimentados ou n o. Ovos de Anagasta kuehniella (Lepidoptera: Pyralidae) e Sitotroga cerealella (Lepidoptera: Gelechiidae) foram utilizados como hospedeiros, sendo expostos a fêmeas desse parasitóide após 0, 6, 12, 24, 36, 48, 60, 72, 84 ou 96 horas. Fêmeas de T. atopovirilia, alimentadas parasitaram ovos dos hospedeiros até 96 horas sem os mesmos. No entanto, o parasitismo ocorreu até o período de 24 horas em A. kuehniella e 48 horas com S. cerealella quando n o alimentados. O parasitismo, a emergência e a raz o sexual de T. atopovirilia foram semelhantes em ovos de A. kuehniella, mas com o aumento do período sem esse hospedeiro, decresce ao longo do tempo, com S. cerealella de forma semelhante foi observado para aquelas n o alimentadas. O alimento foi o principal fator que afetou no parasitismo de T. atopovirilia. The effect of time different periods was compared without host in the Trichogramma atopovirilia (Hym.: Trichogrammatidae) reproducitive characteristics fed or not. Anagasta kuehniella (Lepidoptera: Pyralidae) and Sitotroga cerealella (Lepidoptera: Gelechiidae) eggs they were used as hosts, being exposed to that parasitoid females after 0, 6, 12, 24, 36, 48, 60, 72, 84 or 96 hours. T. atopovirilia females, fed and sponged the hosts eggs up to 96 hours without the same ones. However, the parasitism happened until the period of 24 hours in A. kuehniella and 48 hours with S. cerealella when not fed. The T. atopovirilia parasitism, the emergency and the sexual reason were similar in A. kuehniella eggs, but with the increase of the period without that host, it decreases along the time, with S. cerealella in a similar way it was observed for those not fed. The food was the principal factor that affected in the T. atopovirilia parasitism.
Evolu??o de atributos físicos de solo em sistema de integra??o lavoura-pecuária
Conte, Osmar;Flores, Joo Paulo Cassol;Cassol, Luís César;Anghinoni, Ibanor;Carvalho, Paulo César de Faccio;Levien, Renato;Wesp, Cristiane de Lima;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011001000026
Abstract: the objective of this work was to assess the effect of sward height and successive grazing cycles over soil physical attributes in an integrated crop-livestock system. the experiment was established in 2001, in the planalto médio region, rs, brazil, in a rhodic hapludox (oxisol), with annual ryegrass (lolium multiflorum) intercropped with black oat (avena strigosa), under continuous grazing, during the winter, and single cropped soybean (glycine max) during the summer. the treatments consisted of different grazing intensities, determined by sward height (10, 20, 30, and 40 cm), and a no-grazing area was used as a control. soil bulk density and soil porosity were evaluated at the end of the grazing and soybean cycles, as well as soil resistance to mechanic penetration and aggregate stability in the seventh year of the experiment. no significant differences were found on soil bulk density and soil porosity after seven years under crop-livestock integration. soil resistance to penetration is higher on the superficial layer after the grazing cycle. soil aggregation increases in grazing areas, regardless of grazing intensities.
Eficácia do tratamento Ovsynch associado à insemina o artificial prefixada em rebanhos Bos taurus e Bos indicus
Alvarez Rafael Herrera,Martinez Antonio Campanha,Carvalho Joo Batista Pereira de,Arcaro Juliana Rodrigues Pozzi
Pesquisa Agropecuária Brasileira , 2003,
Abstract: O presente trabalho objetivou avaliar a eficácia do tratamento Ovsynch associado à insemina o artificial em tempo prefixado em vacas Bos taurus e Bos indicus. Foram utilizados rebanhos das ra as Holandesa, Caracu, Nelore e Mantiqueira. Também foi incluído um rebanho de vacas Gir, com problemas de fertilidade. Cada rebanho foi dividido em três grupos. O grupo 1 recebeu o tratamento Ovsynch e foi inseminado em tempo prefixado. O grupo 2 foi inseminado no cio induzido com cloprostenol. O grupo 3 foi inseminado no cio natural. As taxas de concep o e de prenhez foram determinadas por ultra-sonografia. N o existiu intera o significativa das variáveis reprodutivas analisadas para rebanho, idade, período pós-parto, número de pari o e presen a do bezerro. A taxa de concep o n o diferiu (P>0,05) entre os grupos, ao passo que a taxa de prenhez foi superior (P<0,05) nos grupos 1 e 2 em compara o ao grupo 3. No rebanho Gir, o tratamento Ovsynch n o alterou a taxa de concep o nem a de prenhez. Independentemente da ra a, os tratamentos Ovsynch e cloprostenol n o afetam a taxa de concep o, mas melhoram a taxa de prenhez. O tratamento Ovsynch n o aumenta a fertilidade de vacas com problemas reprodutivos inespecíficos.
Agroindustrial byproducts in diets for Nile tilapia juveniles
Carvalho, Joo Sérgio Oliveira;Azevedo, Rafael Vieira de;Ramos, Ana Paula de Souza;Braga, Luís Gustavo Tavares;
Revista Brasileira de Zootecnia , 2012, DOI: 10.1590/S1516-35982012000300002
Abstract: this study was conducted to evaluate performance and body composition of tilapia (oreochromis niloticus) fed diets containing byproducts aerial parts of cassava meal (manihot esculenta), mesquite pod meal (prosopis juliflora), cocoa meal (theobroma cacao) and palm kernel cake (elaeis guineensis) and to analyze the economic viability of the feed. a total of 1,350 juvenile males (100 g) were distributed in 15 cages (1 m3) in completely randomized design with five treatments (basal diet and four test diets) and three replicates. the following aspects were evaluated: final weight, total feed intake, total weight gain, feed conversion, specific growth rate, protein efficiency ratio and survival rate, dry matter, crude protein, fat and ash body, the average cost of feed per kilogram of weight gain and economic efficiency rate. no differences were observed for total consumption of food or survival rate. for other variables, the inclusion of cocoa and cassava meal impaired fish performance. no differences were observed for dry matter, crude protein and body ash. the lower body fat accumulation was recorded for the tilapia fed palm kernel cake. the best economic indicators were found to diets containing palm kernel cake. the byproducts evaluated can be used up to 150 g/kg in feed formulation, providing good performance and economic rate for nile tilapia.
Mesquite bean and cassava leaf bran in diets for juvenile Nile tilapia kept in water with salinity Farelos da vagem da algaroba e da folha da mandioca em ra es para juvenis de tilápia do Nilo mantidos em água salobra
Louise Santos Fernandes de Jesus,Rafael Vieira de Azevedo,Joo Sérgio Oliveira Carvalho,Luís Gustavo Tavares Braga
Revista Brasileira de Saúde e Produ??o Animal , 2011,
Abstract: It was evaluated the inclusion of the mesquite bean (Prosopis juliflora) and cassava leaf bran (Manihot esculenta) in diets for Nile tilapia (Oreochromis niloticus) (2.89±0.43g). 225 fish were used, distributed in 15 tanks (120L) in a completely randomized design in a 2x2 factorial design, two sources and three levels of bran (10 and 20%), and a control treatment free of by-products (n=3). After 60 days, it was evaluated the growth performance (daily feed intake, daily weight gain, feed conversion and survival rate) and corporal composition of fish. The performance and corporal composition, except the crude protein content, were not affected by the source or level of bran inclusion. The brans evaluated may be applicable in diets of Nile tilapia including up to 20% without decreasing performance. Avaliou-se a inclus o dos farelos da vagem da algaroba (Prosopis juliflora) e folha da mandioca (Manihot esculenta) em ra es para tilápia do Nilo (Oreochromis niloticus) (2,89±0,43g). Foram utilizados 225 peixes, distribuídos em 15 tanques (120L), em um delineamento inteiramente casualizado, em esquema fatorial 2x2, duas fontes e dois níveis de farelo (10 e 20%), além de um tratamento controle isento dos coprodutos (n=3). Ao final de 60 dias, foram avaliados o desempenho zootécnico (consumo de ra o, ganho de peso, convers o alimentar aparente e taxa de sobrevivência) e a composi o corporal dos peixes. O desempenho zootécnico e a composi o corporal, exceto quanto ao teor de proteína bruta, n o foram afetados pela fonte ou nível de inclus o do farelo. Os farelos estudados podem ser utilizados em ra es de tilápias do Nilo até 20% de inclus o, sem comprometer o desempenho zootécnico.
Resistência à proteína C ativada e doen?a arterial isquêmica em jovem
Menezes, Igor Alexandre C?rtes de;Romani, Rafael Fernandes;Aoki, Yuki Schneider;Abdo, Joo Caetano;Carvalho, Mauricio;
Arquivos Brasileiros de Cardiologia , 2010, DOI: 10.1590/S0066-782X2010000300025
Abstract: the assessment of activated protein c resistance (apcr) caused by mutations in factor v (factor v leiden) is an important risk factor for venous thromboembolism, of which role as the originator of arterial obstructions in situ is still a controversial subject. the clinical case of a young patient with history of coronariopathy, multiple cerebrovascular lesions and peripheral artery disease is reported. the diagnostic investigation showed apcr as the possible etiology.
Digestibilidade aparente da energia e nutrientes de coprodutos agroindustriais para tilápia do Nilo Apparent digestibility of the energy and nutrients of agro-industrial by-products for Nile tilapia
Luís Gustavo Tavares Braga,Fabiana Lopes Rodrigues,Rafael Vieira de Azevedo,Joo Sérgio Oliveira Carvalho
Revista Brasileira de Saúde e Produ??o Animal , 2010,
Abstract: Objetivou-se com este estudo determinar os coeficientes de digestibilidade aparente da matéria seca, proteína bruta e da energia bruta dos coprodutos agroindustriais torta de dendê, farelo de algod o, farelo da vagem de algaroba, farelo da folha de mandioca e farelo de cacau para tilápias do Nilo (Oreochromis niloticus). Foram utilizados 150 peixes revertidos sexualmente, com peso de 40 ± 2,6g, distribuídos em 10 gaiolas de 60L, instaladas em cinco caixas de polietileno (310L) e seis incubadoras de 200L adaptadas para ensaio de digestibilidade, em um delineamento inteiramente casualizado com cinco tratamentos e três repeti es. A determina o dos coeficientes de digestibilidade aparente foi realizada pelo método indireto, com a utiliza o 0,10% de óxido cr mico (Cr2O3), como indicador. Os coeficientes de digestibilidade aparente da matéria seca, proteína bruta e energia bruta, foram, respectivamente, 56,63; 75,87 e 66,87 para torta de dendê; 48,31; 80,51 e 39,63 para farelo de algod o; 48,69; 51,61 e 30,48 para farelo da vagem de algaroba; 50,22; 49,83 e 29,29 para farelo da folha de mandioca e 43,87; 38,47 e 23,13 para farelo de cacau. This study was carried out aimed to determine the dry matter, crude protein and gross energy apparent digestibility coefficients of agro-industrial by-products palm kernel cake, cotton seed meal, mesquite pods meal, aerial parts of cassava meal and cocoa meal for Nile tilapia (Oreochromis niloticus). One hundred and fifty sexually reverted fishes, with weight of 40 ± 2.6g were spread across to teen net pens of 60L, installed in five polyethylene boxes (310L) and six hatchers adapted for the digestibility trial (200L), in an entirely randomized layout with five treatments and three repetitions. The apparent digestibility coefficients determination was performed by the indirect method, using 0.10% chromic oxide (Cr2O3), as marker. Apparent digestibility coefficients of dry matter, crude protein and gross energy were, respectively, 56.63; 75.87 and 66.87 for palm kernel cake; 48.31; 80.51 and 39,63 for cotton seed meal; 48.69; 51.61 and 30.48 for mesquite pods meal; 50.22; 49.83 and 29.29 for aerial parts of cassava meal and; 43.87; 38.47 and 23.13 for cocoa meal.
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