Results 21 to 30 of about 19,946 (161)

Parâmetros fermentativos, produção de proteína microbiana, concentrações de ureia no leite e no plasma e balanço de nitrogênio de vacas alimentadas com silagem de milho ou cana-de-açúcar com caroço de algodão Fermentative parameters, microbial protein production, plasma and milk urea concentration and nitrogen balance of milking cows fed maize silage or sugarcane with whole cottonseed

open access: yesRevista Brasileira de Zootecnia, 2009
Doze vacas da raça Holandesa foram distribuídas em três quadrados latinos 4 × 4 com o objetivo de avaliar o pH, o N-amoniacal, a produção de proteína microbiana, o número de protozoários no rúmen, a concentração de N-ureia no plasma e no leite e ...
Daniel de Paula Sousa   +5 more
doaj   +1 more source

Relationship between testicular lesion and hormone levels in male rats infected with Trypanosoma evansi

open access: yesAnais da Academia Brasileira de Ciências, 2014
The aim of this study was to evaluate the relationship between testicular lesions and hormone levels in rats experimentally infected with Trypanosoma evansi.
LUCIANA FACCIO   +12 more
doaj   +1 more source

Efeito da deficiência de energia na dieta sobre a população de protozoários ciliados do rúmen de bovinos [PDF]

open access: yes, 2008
Ten young rumen-cannulated crossbred steers were randomly divided into two groups: a control group (C; n=4), which was fed a balanced diet for daily weight gain of 900g; and a pronounced energy-deprived group (PED; n=6), receiving 30% less of the ...
ANTONELLI, A.C.   +7 more
core   +4 more sources

Trypanosomatids (Protozoa: Kinetoplastida) in three species of Armored Catfish from Mogi-Guaçu river, Pirassununga, São Paulo, Brazil

open access: yesRevista Brasileira de Parasitologia Veterinária, 2016
Trypanosome infections have been reported in several species of fish, in majority of cases described on the basis of morphological characteristics. Trypanosomes in fish are heteroxenous and transmitted by hirudineans.
Julia Pereira Molina   +5 more
doaj   +1 more source

Ocorrência de protozoários gastrintestinais em primatas mantidos em cativeiro na região sul do Brasil Occurrence of gastrointestinal protozoa in primates kept in captivity in the Southern region of Brazil

open access: yesCiência Rural, 2008
Este trabalho visou avaliar o parasitismo gastrintestinal por protozoários em macacos mantidos em cativeiro na região Sul do Brasil. Foram analisadas amostras de fezes de 18 primatas de quatro espécies, Cebus apella, Macaca mulata, Callithrix jacchus e ...
Aleksandro Schafer da Silva   +6 more
doaj   +1 more source

PROTOZOÁRIOS RUMINAIS DE NOVILHOS DE CORTE CRIADOS EM PASTAGEM TROPICAL DURANTE O PERÍODO SECO

open access: yesCiência Animal Brasileira, 2014
Protozoários do rúmen podem representar 40% do nitrogênio total e 60% do produto final da fermentação e apresentam atividade celulolítica. Neste estudo, objetivou-se quantificar e identificar as populações de protozoários no rúmen de novilhos, criados ...
Kellerson Luiz Silva   +4 more
doaj   +1 more source

Seasonal distribution of nanoflagellates and bacterioplankton and relationship with environmental factors in a brazilian semi-arid reservoir=Distribuição sazonal de nanoflagelados e do bacterioplâncton e relações com fatores ambientais em um reservatório do semiárido brasileiro [PDF]

open access: yesActa Scientiarum: Biological Sciences, 2012
The semi-arid region of Rio Grande do Norte State, in northeast Brazil exhibits specific physical-climatic aspects: the climate is very hot, with mean annual rainfall of 550 mm, characterized by periodic drought and uneven distribution of rains.
Magnólia Fernandes Florêncio de Araújo   +1 more
doaj  

Highlights of the São Paulo ISEV workshop on extracellular vesicles in cross‐kingdom communication

open access: yesJournal of Extracellular Vesicles, Volume 6, Issue 1, December 2017., 2017
ABSTRACT In the past years, extracellular vesicles (EVs) have become an important field of research since EVs have been found to play a central role in biological processes. In pathogens, EVs are involved in several events during the host–pathogen interaction, including invasion, immunomodulation, and pathology as well as parasite–parasite ...
Rodrigo P. Soares   +30 more
wiley   +1 more source

CK2 Secreted by Leishmania braziliensis Mediates Macrophage Association Invasion: A Comparative Study between Virulent and Avirulent Promastigotes

open access: yesBioMed Research International, Volume 2015, Issue 1, 2015., 2015
CK2 is a protein kinase distributed in different compartments of Leishmania braziliensis: an externally oriented ecto‐CK2, an intracellular CK2, and a secreted CK2. This latter form is constitutively secreted from the parasite (CsCK2), but such secretion may be highly enhanced by the association of specific molecules, including enzyme substrates, which
Ana Madeira Brito Zylbersztejn   +8 more
wiley   +1 more source

Endoparasitos em cobaias (Cavia porcellus) (Mammalia, Rodentia, Caviidae) provenientes de biotérios de criação e experimentação do município do Rio de Janeiro, Brasil Endoparasites in guinea pigs (Cavia porcellus) (Mammalia, Rodentia, Caviidae) from breeding and experimentation animal housing of the municipality of Rio de Janeiro, Brazil

open access: yesCiência Rural, 2007
Foi realizado um levantamento sobre a prevalência e intensidade de infecção de endoparasitos em cobaias convencionais de linhagem Short Hair provenientes de biotérios de criação (A) e experimentação (B) do município do Rio de Janeiro, Brasil, avaliando ...
Luciana Casartelli Alves   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy