48 research outputs found
Rabies virus in a pregnant naturally infected southern yellow bat (Lasiurus ega)
Current knowledge on bat lyssavirus infections in their native hosts is limited and little is known about the virulence, virus dissemination and transmission among free-living insectivorous bats. The present study is a brief description of rabies virus (RABV) dissemination in tissues of a naturally infected pregnant southern yellow bat (Lasiurus ega) and its fetuses, obtained by reverse-transcriptase polymerase chain reaction (RT-PCR). The RT-PCR was positive in samples from the brain, salivary gland, tongue, lungs, heart, kidneys and liver. On the other hand, the placenta, three fetuses, spleen, intestine and brown fat tissue tested negative. This research demonstrated the absence of rabies virus in the fetuses, thus, in this specific case, the transplacentary transmission was not observed
Teelt van spruitkool
De teelthandleiding geeft een algemene beschrijving van alle aspecten van de teelt van spruitkool: groei en ontwikkeling, grond, rassen, zaaien planten oogstplanning, bemesting, onkruidbestrijding, ziekten, plagen, wildschade, opbrengst, oogst, afleveren, afleveren en economie. De volgende aspecten in relatie tot de best practices worden belicht: - Perceelskeuze en aaltjes/schimmels - Vruchtwisseling minimaal 1 op 4 - Onkruidbestrijding, mechanisch Sleutelwoorden: PPO-agv, akkerbouw, tuinbouw, gewasbescherming, geïntegreerde bestrijding, groenteteelt, spruitjes, vollegrondsgroente, spruitkool, teelthandleidin
Evaluación de la calidad de los reactivos que se utilizan en la tecnica de contrainmunoelectroforesis para la determinación de anticuerpos antirrábicos
En este estudio se comprobó que el Instituto Butantan produce antÃgenos y sueros indicadores que se pueden utilizar con éxito en la prueba de contrainmunoelectroforesis para titular anticuerpos antirrábicos en personas inmunizadas. No se pudieron demostrar diferencias estadÃsticamente significativas entre los resultados de las pruebas de estandarización realizadas en el Instituto Butantan y las pruebas de control de referencia llevadas a cabo en el Centro Panamericano de Zoonosis. Se propone que el Instituto Butantan produzca y distribuya a nivel nacional los reactivos para que los laboratorios de diagnóstico apliquen la técnica de contrainmunoelectroforesis para la determinación de anticuerpos antirrábicos.This study demonstrated that the antigens and indicator sera produced by the Butantan Institute may be employed with success in the counterimmunoelectrophoresis technique for the titration of rabies antibodies in sera from immunized individuals. No statistically significant differences were demonstrated between the results obtained in the standardization tests carried out at the Butantan Institute and the reference control tests performed at the Pan American Zoonoses Center. It is proposed that the Butantan Institute be in charge of the production and distribution of these reagents at the national level
Titulação de anticorpos contra o vÃrus da raiva em cães, em Campo Grande, MS, na Campanha Anti-Rábica de 2003 Rabies virus antibody titers in dogs in Campo Grande, Mato Grosso do Sul State, during the anti-rabies campaign, 2003
Para avaliar a resposta imune em cães, que compareceram a Campanha de Vacinação Anti-Rábica Animal de 2003, foram analisados 333 soros caninos, coletados nos diversos postos de vacinação. Verificou-se que 51,1% dos animais não possuÃam tÃtulos protetores. Não foi encontrada associação entre aplicação de vacina e maior número de vacinações, com maior tÃtulo imunitário.<br>To assess the immune response in dogs attended during the 2003 anti-rabies animal vaccination campaign, 333 serum samples collected at different vaccination posts were analyzed. It was found that 51.1% of the animals did not have protective titers. No correlation was found between vaccine application or multiple vaccinations and higher immune titers
Suplementação com levedura de crômio eleva a concentração sérica de crômio em bovinos
This study evaluated the effect of daily
chromium supplementation at growing doses on
serum Cr levels in cattle. Sixty Nellore heifers 2 to
5 years old were randomly assigned to one of four
groups (15 heifers/group) fed non-fertilized
Brachiaria decumbens pasture. In the control
group (Gc), the heifers received a mineral mixture
without Cr. In the other groups, heifers received
0.59, 1.19 or 2.38 mg Cr +3 /animal/day, groups G 8.5 ,
G 17 and G 34 , respectively. Blood samples were
collected on days 0, 30 and 60. Serum concentration
of chromium was determined by graphite furnace
atomic absorption spectrophotometer. The
chromium source used was the chromium yeast.
The results do not support any significant
difference (p>0.05) among serum chromium levels
of heifers in groups Gc, G 8.5 , G 17 and G 34 at a same
observation day. Only effect of supplementation
time was detected in group G 34 . In this group there
was significant increase (p<0,05) in the
concentration serum chromium 60 days after the
beginning of the experiment. Concluded Cr yeast
can be used as the source of this mineral element
or animals and supplementation with 2.38 mg/
cattle/day was the dose that most increased the
serum concentration of Cr in Nellore cattle during
the experimental period.O estudo avaliou o efeito da suplementação
com doses crescentes de crômio/dia sobre a
concentração sérica de Cr em bovinos. Sessenta
novilhas da raça Nelore com idade entre 2 e 5 anos
foram distribuÃdas aleatoriamente em 4 grupos (15
novilhas/grupo) alimentadas com pastagem de
Brachiaria decumbens não fertilizada. No grupo
controle (Gc), as novilhas receberam mistura
mineral sem adição de Cr. Nos demais as novilhas
receberam 0,59; 1,19 e 2,38 mg de Cr +3 /animal/dia
(grupos G 8,5 , G 17 e G 34 , respectivamente). Colheram-
se amostras de sangue nos dias 0, 30 e 60. A
concentração sérica de crômio foi determinada
por meio de espectrofotometria de absorção
atômica com forno de grafite. A fonte de crômio
utilizada foi a levedura de crômio. Os resultados
mostram que não houve diferença significativa
(p>0,05) na concentração sérica de crômio das
novilhas entre os grupos Gc; G 8,5 ; G 17 e G 34 , num
mesmo dia de observação. O único efeito obser-
vado foi do tempo de suplementação com crômio
no o grupo G 34 . Neste grupo a concentração sérica
de crômio apresentou aumento significativo
(p<0,05) 60 dias após o inÃcio da suplementação.
Conclui-se a levedura de Cr pode ser utilizada
como fonte deste elemento mineral para os bovi-
nos e a suplementação com 2,38 mg/bovino/dia foi
a dose que mais elevou a concentração sérica de
Cr nos bovinos da raça Nelore durante o perÃodo
experimental