Results 21 to 30 of about 5,931 (224)

Strategies for the control of Rhipicephalus microplus ticks in a world of conventional acaricide and macrocyclic lactone resistance [PDF]

, 2018
Infestations with the cattle tick, Rhipicephalus microplus, constitute the most important ectoparasite problem for cattle production in tropical and subtropical regions worldwide, resulting in major economic losses. The control of R.
Bhushan, Chandra, Jonsson, Nicholas N., Rodriguez-Vivas, Roger I.   +2 more
core   +1 more source

Cardiovascular assessment in horses sedated with xylazine or amitraz Avaliação cardiovascular em eqüinos sedados com xilazina ou amitraz

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2008
Cardiovascular effects due to intravenous (IV) xylazine (1.0mg/kg) or amitraz (0.1 or 0.4mg/kg) were evaluated in horses. Left ventricular function indexes, heart rate (HR), and cardiac output (CO) were measured by echocardiography.
R.L. Linardi, J.C. Canola, C.A.A. Valadão   +2 more
doaj   +1 more source

Study of acute toxicosis and biochemical changes inducd by amitraz in chicks [PDF]

Iraqi Journal of Veterinary Sciences, 2014
The aim of this study was to determined the toxic effects and biochemical changes induced by amitraz in the chicks (7-14 days). The median lethal dose (LD50) of amitraz was (53.05 mg / kg, orally. Yohimbin injection at (0.5, 1 mg / kg, intraperitoneally)
Y.A.AL-Hammdani, K.AL-Baggou
doaj   +1 more source

Investigation on amitraz, coumaphos and thymol concentrations in honey produced by Slovenian beekeepers in 2020

Acta Agriculturae Slovenica, 2021
A survey on concentrations of veterinary drug residues amitraz, coumaphos and thymol in honey, produced in year 2020 by Slovenian beekeepers, was conducted.
Helena BAŠA ČESNIK, Veronika KMECL
doaj   +1 more source

Acaricidal activity of small molecule antagonists of the tick kinin receptor against Rhipicephalus microplus acaricide-susceptible and resistant strains. [PDF]

Pest Manag Sci
Two small molecules, SACC‐0039590 and SACC‐0428788, killed cattle fever tick, R. microplus, susceptible Deutch strain and pyrethroid resistant Arauquita strain larvae. SACC‐0039590 at 1 mM decreased the reproductive parameters of Deutch females. Abstract BACKGROUND Resistance to acaricides underscores the need for tick control alternatives.
Arafa WM, Lohmeyer KH, Pietrantonio PV.
europepmc   +2 more sources

Results of international standardised beekeeper surveys of colony losses for winter 2012-2013 : analysis of winter loss rates and mixed effects modelling of risk factors for winter loss. [PDF]

, 2014
This article presents results of an analysis of winter losses of honey bee colonies from 19 mainly European countries, most of which implemented the standardised 2013 COLOSS questionnaire.
Aivar Raudmets, Alison Gray, Ari Seppälä, BATES D, Bjørn Dahle, BORNMANN L, Christoph Otten, Flemming Vejsnæs, Franco Mutinelli, GRAY A, Grażyna Topolska, Jean-Daniel Charrière, Justinas Kretavicius, Lassi Kauko, Magnus Peterson, Marica M Drazic, Mary F Coffey, MUTINELLI F, Preben Kristiansen, R DEVELOPMENT CORE TEAM, Robert Brodschneider, Romée van der Zee, Róbert Chlebo, Valters Brusbardis, VAN DER ZEE R, VANENGELSDORP D, Victoria Soroker, Violeta Santrac   +27 more
core   +1 more source

Developmental and behavioral effects of postnatal amitraz exposure in rats

Brazilian Journal of Medical and Biological Research, 1997
The effects of postnatal amitraz exposure on physical and behavioral parameters were studied in Wistar rats, whose lactating dams received the pesticide (10 mg/kg) orally on days 1, 4, 7, 10, 13, 16 and 19 of lactation; control dams received distilled ...
J. Palermo-Neto, M. Sakaté, J.C. Flório   +2 more
doaj   +1 more source

Resistance to cypermethrin and amitraz in Rhipicephalus (Boophilus) microplus on the Santa Catarina Plateau, Brazil Situação da resistência do Rhipicephalus (Boophilus) microplus à cipermetrina e amitraz no Planalto Catarinense, Brasil

Revista Brasileira de Parasitologia Veterinária, 2012
With the objective of evaluating Rhipicephalus (Boophilus) microplus resistance to cipermetrina and amitraz, were collected engorged tick females from cattle on 20 farms on the Santa Catarina Plateau, in southern Brazil, between January of 2004 and May ...
Luana Paula Haubold Neis Veiga, Antonio Pereira de Souza, Valdomiro Bellato, Amélia Aparecida Sartor, Ana Paula de Oliveira Nunes, Helena Mondardo Cardoso   +5 more
doaj   +1 more source

Effect of amitraz and xylazine on some physiological variables of horses

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2000
The effect of the intravenous injection of amitraz (0.1mg/kg) to horses on cardiac activity, respiratory rate, intestinal motor activity, rectal temperature, sweating and masticating was evaluated and compared to the effect of intravenous administration ...
A. Queiroz-Neto, A.B. Carregaro, G. Zamur, J.D. Harkins, T. Tobin, M.I. Mataqueiro, S.C. Gonçalves   +6 more
doaj   +1 more source

Amitraz and Its Metabolites: Oxidative Stress-Mediated Cytotoxicity in HepG2 Cells and Study of Their Stability and Characterization in Honey

Antioxidants, 2023
The population decrease of bees that has been observed in recent years due to the Varroa destructor parasite may endanger the production of bee-products whose demand is on the rise.
Marialuce Giorgini, Mercedes Taroncher, Josefa Tolosa, María-José Ruiz, Yelko Rodríguez-Carrasco   +4 more
doaj   +1 more source