keyword
MENU ▼
Read by QxMD icon Read
search

Ostertagia ostertagi

keyword
https://www.readbyqxmd.com/read/29764472/high-species-diversity-of-trichostrongyle-parasite-communities-within-and-between-western-canadian-commercial-and-conservation-bison-herds-revealed-by-nemabiome-metabarcoding
#1
Russell W Avramenko, Ana Bras, Elizabeth M Redman, Murray R Woodbury, Brent Wagner, Todd Shury, Stefano Liccioli, M Claire Windeyer, John S Gilleard
BACKGROUND: Many trichostrongylid nematode species are reported to infect bison, some of which are major causes of disase and production loss in North American bison herds. However, there is little information on the species distribution and relative abundance of these parasites in either commercial or conservation herds. This is largely because trichostrongylid nematode species cannot be distinguished by visual microscopic examination of eggs present in feces. Consequently, we have applied ITS2 rDNA nemabiome metabarcoding to describe the trichostrongyle parasite species diversity in 58 bison production groups derived from 38 commercial North American plains bison (Bison bison bison) herds from across western Canada, and two bison conservation herds located in Elk Island National Park (EINP) [plains bison and wood bison (Bison bison athabascae)] and one in Grasslands National Park (GNP) (plains bison)...
May 15, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29665814/herd-level-seroprevalence-of-fasciola-hepatica-and-ostertagia-ostertagi-infection-in-dairy-cattle-population-in-the-central-and-northeastern-poland
#2
Sławomir J Kowalczyk, Michał Czopowicz, Corinna N Weber, Elisabeth Müller, Tomasz Nalbert, Andrzej Bereznowski, Jarosław Kaba
BACKGROUND: Fasciola hepatica and Ostertagia ostertagi infections are widespread in cattle population of Europe, however data on their prevalence in Poland are only fragmentary. Therefore, the cross-sectional study was carried out to determine the herd-level seroprevalence of F. hepatica and O. ostertagi infection in dairy cattle population in the central and north-eastern provinces Poland, and to identify basic local risk factors for these infections. In total, 598 herds were enrolled, 394 (65...
April 17, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29594346/bulk-tank-milk-prevalence-and-production-losses-spatial-analysis-and-predictive-risk-mapping-of-ostertagia-ostertagi-infections-in-mexican-cattle-herds
#3
Abel Villa-Mancera, César Pastelín-Rojas, Jaime Olivares-Pérez, Alejandro Córdova-Izquierdo, Alejandro Reynoso-Palomar
This study investigated the prevalence, production losses, spatial clustering, and predictive risk mapping in different climate zones in five states of Mexico. The bulk tank milk samples obtained between January and April 2015 were analyzed for antibodies against Ostertagia ostertagi using the Svanovir ELISA. A total of 1204 farm owners or managers answered the questionnaire. The overall herd prevalence and mean optical density ratio (ODR) of parasite were 61.96% and 0.55, respectively. Overall, the production loss was approximately 0...
March 28, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29385479/genetic-correlations-between-endo-parasite-phenotypes-and-economically-important-traits-in-dairy-and-beef-cattle
#4
Alan J Twomey, Rebecca I Carroll, Michael L Doherty, Noel Byrne, David A Graham, Riona G Sayers, Astrid Blom, Donagh P Berry
Parasitic diseases have economic consequences in cattle production systems. Although breeding for parasite resistance can complement current control practices to reduce the prevalence globally, there is little knowledge of the implications of such a strategy on other performance traits. Records on individual animal antibody responses to Fasciola hepatica, Ostertagia ostertagi, and Neospora caninum were available from cows in 68 dairy herds (study herds); national abattoir data on F. hepatica-damaged livers were also available from dairy and beef cattle...
March 6, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29329624/apparent-prevalence-of-and-risk-factors-for-infection-with-ostertagia-ostertagi-fasciola-hepatica-and-dictyocaulus-viviparus-in-swiss-dairy-herds
#5
C F Frey, R Eicher, K Raue, C Strube, M Bodmer, B Hentrich, B Gottstein, N Marreros
Infections with helminth parasites can negatively affect performance of dairy cows. Knowledge on infection intensity, spatial distributions and risk factors are key to develop targeted treatment strategies. Canada and most EU countries have conducted large investigations, but respective data for Switzerland were missing. We now performed a bulk tank milk serosurvey for Ostertagia ostertagi, Fasciola hepatica, and Dictyocaulus viviparus on a total of 1036 voluntarily participating dairy herds that were sampled at confinement periods, i...
January 30, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29279092/weight-gain-and-resistance-to-gastrointestinal-nematode-infections-in-two-genetically-diverse-groups-of-cattle
#6
Johan Höglund, Anna Hessle, Konstantinos Zaralis, Katarina Arvidsson-Segerkvist, Spiridoula Athanasiadou
Body weight gain (BWG) and gastrointestinal nematode challenge (GIN) were investigated in two genetically diverse groups of cattle. Thirty-two dairy calves (D=Swedish Red/Holstein) and 31 dairy×beef crosses (C=Swedish Red/Holstein×Charolais) pairwise matched by dam breed and birth dates, were monitored for ≈20 weeks on a pasture grazed by cattle in the previous year. At turn-out, animals (between 6 and 12 months age) from each genotype were either infected with 5000 third stage (L3) Ostertagia ostertagi (50%) and Cooperia oncophora (50%) larvae (H, high-exposure); or treated monthly with 0...
January 15, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29128225/a-longitudinal-study-of-gastrointestinal-parasites-in-english-dairy-farms-practices-and-factors-associated-with-first-lactation-heifer-exposure-to-ostertagia-ostertagi-on-pasture
#7
C Bellet, M J Green, A J Bradley, J Kaler
The gastrointestinal nematode Ostertagia ostertagi is an important cause of lost production, health, and welfare in cattle. Detailed records were obtained over a 5-yr period (2010-2015) by questionnaires and qualitative interviews to investigate the practices adopted by dairy farmers to control cattle helminth infections and the factors associated with heifer exposure to O. ostertagi on pasture. In total, 1,454 heifers' individual milk samples were collected over a 1-yr period (2014-2015) in 43 dairy farms in England and tested for O...
January 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29090320/gastrointestinal-parasites-of-captive-european-bison-bison-bonasus-l-with-a-sign-of-reduced-efficacy-of-haemonchus-contortus-to-fenbendazole
#8
Anna M Pyziel, Sven Björck, Rikard Wiklund, Moa Skarin, Aleksander W Demiaszkiewicz, Johan Höglund
The history of European bison Bison bonasus Linnaeus, 1758 has been stormy since its extinction in the wild after the First World War. Due to the fact that the species was restored from just 12 founders, further expansion has suffered from low genetic variability, rendering the bison vulnerable to various pathogens due to inbreeding depression. Parasites are recognised as a key biological threat to bison population. Thus, parasitological examination including monitoring of the level of anthelmintic resistance in a herd should be a routine procedure involved in management and protection of European bison...
January 2018: Parasitology Research
https://www.readbyqxmd.com/read/28988555/mid-season-targeted-selective-anthelmintic-treatment-based-on-flexible-weight-gain-threshold-for-nematode-infection-control-in-dairy-calves
#9
A Merlin, N Ravinet, A Madouasse, N Bareille, A Chauvin, C Chartier
The suitability of a single mid-season targeted selective treatment (TST) for gastrointestinal nematodes control, based on flexible average daily weight gain (ADWG) thresholds, was investigated in 23 groups of first grazing season calves. In each group, animals were weighed three times: before turnout, at mid-season and at housing. Just after the first weighing, each group was divided in two homogenous sub-groups in terms of age, breed and weight, and randomly allocated to one of two sub-groups intented for two different mid-season anthelmintic treatment strategies: (1) a treatment of all calves composing the sub-group (whole-group treatment (WT)) or (2) a targeted selective weight gain-based treatment (TST) of the animals showing an individual pre-treatment ADWG inferior to the mean pre-treatment ADWG of the corresponding WT sub-group...
October 9, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28843682/herd-level-prevalence-of-selected-endemic-infectious-diseases-of-dairy-cows-in-great-britain
#10
Martina Velasova, Angela Damaso, Bhagyalakshmi Chengat Prakashbabu, Jenny Gibbons, Nick Wheelhouse, David Longbottom, Steven Van Winden, Martin Green, Javier Guitian
To implement appropriate and effective disease control programs at the national level, up-to-date and unbiased information on disease frequency is needed. The aim of this study was to estimate the prevalence of selected endemic infectious diseases in the population of dairy herds in Great Britain. Bulk milk tank (BMT) samples from 225 randomly selected dairy farms, stratified by region and herd size, were tested for antibodies against bovine viral diarrhea virus (BVDV), bovine herpesvirus type 1, Mycobacterium avium ssp...
November 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28807295/anthelmintic-effects-of-forage-chicory-cichorium-intybus-against-free-living-and-parasitic-stages-of-cooperia-oncophora
#11
Miguel Peña-Espinoza, Andrew R Williams, Stig M Thamsborg, Henrik T Simonsen, Heidi L Enemark
Chicory shows great promise as an anthelmintic forage for grazing ruminants that can reduce reliance on anti-parasitic drugs. Recently, we reported potent anthelmintic effects of chicory-based diets in infected cattle with significant reductions in worm burdens of the abomasal nematode Ostertagia ostertagi, whilst no apparent activity was observed against the small intestinal parasite Cooperia oncophora. To explore this discrepancy, we investigated direct anthelmintic effects of forage chicory against C. oncophora in vitro...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28807276/establishment-rate-of-cattle-gastrointestinal-nematodes-in-farmed-red-deer-cervus-elaphus
#12
S J Ten Doesschate, W E Pomroy, D Tapia-Escárate, I Scott, P R Wilson
Red deer can be infected with some gastrointestinal nematodes (GIN) of cattle but it is unknown to what extent. An indoor study was conducted to determine the establishment rate of cattle GIN in young deer. Five young calves and 5 young red deer were used. They were effectively treated with anthelmintics when housed and then infected 2 weeks later. After four weeks they were killed for total worm counts. Establishment rates were assessed comparing worm counts to the infective dose which were identified morphologically, and to the relative establishment rate of different species...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28797791/the-use-of-nemabiome-metabarcoding-to-explore-gastro-intestinal-nematode-species-diversity-and-anthelmintic-treatment-effectiveness-in-beef-calves
#13
Russell W Avramenko, Elizabeth M Redman, Roy Lewis, Murilo A Bichuette, Bruna M Palmeira, Thomas A Yazwinski, John S Gilleard
Next-generation deep amplicon sequencing, or metabarcoding, has revolutionized the study of microbial communities in humans, animals and the environment. However, such approaches have yet to be applied to parasitic helminth communities. We recently described the first example of such a method - nemabiome sequencing - based on deep-amplicon sequencing of internal transcribed spacer 2 (ITS-2) rDNA, and validated its ability to quantitatively assess the species composition of cattle gastro-intestinal nematode (GIN) communities...
November 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28765867/-anthelmintic-resistance-in-ruminants-development-diagnostics-and-procedures
#14
Gabriela Knubben-Schweizer, Kurt Pfister
Anthelmintic resistance of gastrointestinal nematodes in small ruminants, but also in cattle and horses, is now found worldwide. The reason for increasing anthelmintic resistance is, in particular, the extensive use of all the anthelmintic agents available on the market. A non-targeted use leads to the selection of naturally occurring resistance genes within parasite populations. The most practical method for evaluating the efficacy of an anthelmintic is the fecal egg-count reduction test. To reduce the rate of anthelmintic resistance development, the available active substances must be applied less and in a targeted manner...
August 10, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/28576343/economic-assessment-of-ostertagia-ostertagi-and-fasciola-hepatica-infections-in-dairy-cattle-herds-in-germany-using-paracalc-%C3%A2
#15
Jane Fanke, Johannes Charlier, Torsten Steppin, Georg von Samson-Himmelstjerna, Jozef Vercruysse, Janina Demeler
The aim of the current study was to estimate economic costs of Ostertagia ostertagi and Fasciola hepatica infections in dairy cattle herds in Germany using the online calculation programme Paracalc® . Following a questionnaire, survey data were available from 464 farms in 14 federal states. On those farms bulk tank milk (BTM) samples and additionally up to six serum samples collected from first season grazing calves were analysed, using a commercially available ELISA (Boehringer Ingelheim SVANOVA Biotech AB, Uppsala, Sweden), an in-house ELISA (F...
June 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28420411/characterization-of-a-novel-aspartyl-protease-inhibitor-from-haemonchus-contortus
#16
Baojie Li, Javaid Ali Gadahi, Wenxiang Gao, Zhenchao Zhang, Muhammad Ehsan, Lixin Xu, Xiaokai Song, Xiangrui Li, Ruofeng Yan
BACKGROUND: Aspartyl protease inhibitor (API) was thought to protect intestinal parasitic nematodes from their hostile proteolytic environment. Studies on Ostertagia ostertagi, Ascaris suum and Brugia malayi indicated that aspins might play roles in nematode infection. In a recent study, proteins differentially expressed between free-living third-stage larvae (L3) and activated L3 (xL3) of Haemonchus contortus were identified by 2D-DIGE. API was found downregulated in xL3 when compared with L3...
April 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28408216/modelling-the-impacts-of-pasture-contamination-and-stocking-rate-for-the-development-of-targeted-selective-treatment-strategies-for-ostertagia-ostertagi-infection-in-calves
#17
Zoe Berk, Yan C S M Laurenson, Andrew B Forbes, Ilias Kyriazakis
A simulation study was carried out to assess whether variation in pasture contamination or stocking rate impact upon the optimal design of targeted selective treatment (TST) strategies. Two methods of TST implementation were considered: 1) treatment of a fixed percentage of a herd according to a given phenotypic trait, or 2) treatment of individuals that exceeded a threshold value for a given phenotypic trait. Four phenotypic traits, on which to base treatment were considered: 1) average daily bodyweight gain, 2) faecal egg count, 3) plasma pepsinogen, or 4) random selection...
April 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28378195/characterization-of-ostertagia-ostertagi-annexin-like-proteins-at-different-developmental-stages
#18
Pooja Sharma, Mark Jenkins, Dante Zarlenga, Ray Fetterer, Zhengguo Xiao, Wenbin Tuo
Ostertagiosis remains an economically important parasitic disease in cattle in the temperate regions of the world. Repeated exposures to Ostertagia ostertagi in calves cause significant pathology in the abomasum but elicit little protective immunity. The larvae use the host's gastric glands as a niche for development, where the parasite completes its parasitic stages, while in the gastric glands, the larvae must down-regulate the host inflammatory immune responses. Annexin (ANX) A1, commonly found in most eukaryotes, is heavily involved in controlling anti-inflammatory responses by binding receptors on leukocytes...
May 2017: Parasitology Research
https://www.readbyqxmd.com/read/28288768/economic-modelling-of-grazing-management-against-gastrointestinal-nematodes-in-dairy-cattle
#19
M van der Voort, J Van Meensel, L Lauwers, M H A de Haan, A G Evers, G Van Huylenbroeck, J Charlier
Grazing management (GM) interventions, such as reducing the grazing time or mowing pasture before grazing, have been proposed to limit the exposure to gastrointestinal (GI) nematode infections in grazed livestock. However, the farm-level economic effects of these interventions have not yet been assessed. In this paper, the economic effects of three GM interventions in adult dairy cattle were modelled for a set of Flemish farms: later turnout on pasture (GM1), earlier housing near the end of the grazing season (GM2), and reducing the daily grazing time (GM3)...
March 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28259556/a-multi-country-study-to-assess-the-effect-of-a-treatment-with-moxidectin-pour-on-during-the-dry-period-on-milk-production-in-dairy-cows
#20
Thomas Geurden, David J Bartram, Hima Bindu Vanimisetti, Jane Fanke, Philippe Camuset, Jacques Devos, Andrew Sawyer, Georg von Samson-Himmelstjerna, Janina Demeler, Johannes Charlier
A randomized clinical study was conducted in a total of 45 commercial dairy farms in France (14 farms), Germany (28 farms) and the UK (3 farms) to evaluate the effect of an anthelmintic treatment on milk yield in the subsequent lactation. A total of 1287 animals with suspected exposure to Ostertagia ostertagi were included in the study. Animals were treated during the dry period (7-77days before parturition) with moxidectin pour-on (Cydectin(®) 0.5% Pour-On, Zoetis; 638 animals) or left untreated (649 animals) according to a randomized block design...
April 15, 2017: Veterinary Parasitology
keyword
keyword
35212
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"