Results 31 to 40 of about 28,493 (223)

Peppermint essential oil as an anesthetic for and toxicity to juvenile silver catfish [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2019
: The objective of this work was to evaluate peppermint (Mentha piperita) essential oil toxicity to and potential as an anesthetic for juvenile silver catfish (Rhamdia quelen).
Diogo Bessa Neves Spanghero   +5 more
doaj   +1 more source

Laboratory investigation of daily food intake and gut evacuation in larvae of African catfish Clarias gariepinus under different feeding conditions [PDF]

open access: yes, 2010
Temporary accumulation of ascorbic acid 2-sulfate (AAS) was measured to estimate food intake and gut evacuation in larvae of African catfish. Fish larvae were fed decapsulated cysts of Artemia containing AAS.
García-Ortega, A.   +5 more
core   +3 more sources

Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels

open access: yesCiência Rural, 2016
: Humic substances are organic compounds that possess high molecular weight and are formed by the decomposition of plant materials. Humic substances comprise humic acids, fulvic acids and humin.
Silvio Teixeira da Costa   +6 more
doaj   +1 more source

Effect of different concentrations of protein on the digestive system of juvenile silver catfish

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2012
Aspects of digestion in juvenile silver catfish Rhamdia quelen fed with four levels of protein (20, 27, 34 and 41%) were studied. The studied traits were digestive enzymes (nonspecific proteases, trypsin, chymotrypsin, amylase and lipase) and weight gain.
J.F.B. Melo   +3 more
doaj   +1 more source

Inactivated Parapoxvirus ovis as inducer of immunity in silver catfish (Rhamdia quelen) [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2016
Molecules with immune modulating activity are ubiquitously distributed in nature and their impact on aquaculture has been exploited in order to increase fish resistance to pathogens. Here, we investigated the effect of inactivated Parapoxvirus ovis (iPPVO) on blood cells and innate and acquired immune response of silver catfish (Rhamdia quelen).
PAVAN, TATIANA R.   +5 more
openaire   +5 more sources

Dietary salt and water pH effects on growth and Na+ fluxes of silver catfish juveniles - doi: 10.4025/actascianimsci.v33i3.11192

open access: yesActa Scientiarum: Animal Sciences, 2011
This study verified the optimum dietary salt level for the growth and ion regulation of silver catfish juveniles at different water pH levels (5.5, 7.0 and 9.0).
Carlos Eduardo Copatti   +4 more
doaj   +1 more source

Imazapyr+imazapic herbicide determines acute toxicity in silver catfish Rhamdia quelen

open access: yesEcotoxicology and Environmental Safety, 2016
Imazapyr (IMY) and imazapic (IMI) are imidazolinone herbicides which have been associated in a commercial formulation (Kifix(®)). To date, there are no studies on the toxicity of an IMY+IMI herbicide in fish. This work aimed to assess the acute toxicity (24 and 96 h) of IMY+IMI (0, 0.488 and 4.88 µg/L) towards Rhamdia quelen through hematological ...
Jaqueline Ineu, Golombieski   +10 more
openaire   +2 more sources

Nanocomposite of silver nanoparticles/diatomite against pathogenous bacteria for catfish

open access: yesAquaculture Reports, 2020
Study on electron beam (EB) irradiation of AgNO3/chitosan/Diatomite (DA) suspension mixture was carried out. Influence of AgNO3 precursor’s concentration on the size and the content of silver nanoparticles (AgNPs) deposited in DA was investigated. The TEM images demonstrated the AgNPs in nanocomposite of AgNPs/DA were spherical with an average diameter
Hanh Thi Truong   +2 more
openaire   +2 more sources

Effect of water-born colloidal silver nanoparticles and silver nitrate on gill histopathology of Rainbow catfish, Pangasianodon hypophthalmus [PDF]

open access: yesبوم‌شناسی آبزیان, 2014
Nowadays, silver nanoparticles have very important application in different industries mainly because of the antimicrobial activity. The purpose of this investigation was to evaluate the possible effects of silver nanoparticles in comparison with the ...
Parastoo Razmara   +4 more
doaj  

Anesthetic activity of Brazilian native plants in silver catfish (Rhamdia quelen) [PDF]

open access: yesNeotropical Ichthyology, 2013
There is an increasing demand for inexpensive and safe anesthetics that can reduce fish stress caused by some procedures such as capture and handling. In this context, the present study evaluated the potential of essential oils (EO) of three Brazilian native plants (Hesperozygis ringens, Lippia sidoides and Ocotea acutifolia) as anesthetics for the ...
Silva, Lenise de Lima   +8 more
openaire   +4 more sources

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