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https://www.readbyqxmd.com/read/28619163/frequent-occurrence-of-nonprimate-hepacivirus-infections-in-thoroughbred-breeding-horses-a-cross-sectional-study-for-the-occurrence-of-infections-and-potential-risk-factors
#1
Claudia Reichert, Amely Campe, Stephanie Walter, Stephanie Pfaender, Kathrin Welsch, Inga Ruddat, Harald Sieme, Karsten Feige, Eike Steinmann, Jessika M V Cavalleri
Recently, several new hepaciviruses have been identified of which the nonprimate hepacivirus (NPHV) - the closest relative to hepatitis C virus (HCV) discovered to date - is highly prevalent in horses. However, potential risk factors for the transmission of NPHV among horses remain still unknown. Therefore, the objective of this study was to investigate the occurrence of NPHV infections in Thoroughbreds in northern and western Germany and to identify potential risk factors associated with NPHV infections. Using a cross-sectional study design, a total of 733 serum samples from Thoroughbred broodmares and stallions from northern and western Germany were analyzed for the presence of anti-NPHV nonstructural protein 3 (NS3) antibodies and NPHV RNA using the luciferase immunoprecipitation system (LIPS) and a quantitative real-time PCR, respectively...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28601147/deep-anestrous-mares-under-natural-photoperiod-treated-with-recombinant-equine-fsh-refsh-and-lh-relh-have-fertile-ovulations-and-become-pregnant
#2
Geraldine A Meyers-Brown, Meaghan C Loud, John C Hyland, Janet F Roser
The most common equine breeding practice to decrease the time to the first ovulation of the year is to use artificial lights starting December 1 in the Northern Hemisphere. It can take 60-90 d for this lighting regimen to induce a fertile ovulation. The success rate for pharmaceutical compounds to carry out the same process has been variable. One compound that did induce an early ovulation was recombinant equine follicle stimulating hormone (reFSH), but neither pregnancy nor cyclicity was established in that study...
August 2017: Theriogenology
https://www.readbyqxmd.com/read/28590353/proposed-clinical-pathway-for-non-operative-management-of-high-grade-pediatric-pancreatic-injuries-based-on-a-multicenter-analysis-a-pediatric-trauma-society-collaborative
#3
Bindi J Naik-Mathuria, Eric H Rosenfeld, Adam Vogel, Ankush Gosain, Randall Burd, Richard A Falcone, Rajan Thakkar, Barbara Gaines, David Mooney, Mauricio Escobar, Mubeen Jafri, Anthony Stallion, Denise B Klinkner, Robert Russell, Brendan Campbell, Rita V Burke, Jeffrey Upperman, David Juang, Shawn St Peter, Stephon J Fenton, Marianne Beaudin, Hale Wills, Stephanie Polites, Adam Pattyn, Christine Leeper, Laura V Veras, Ilan Maizlin, Shefali Thaker, Alexis Smith, Megan Waddell, Joseph Drews, James Gilmore, Lindsey Armstrong, Alexis Alex Ler, Suzanne Moody, Brandon Behrens, Laurence Carmant
BACKGROUND: Guidelines for non-operative management (NOM) of high-grade pancreatic injuries in children have not been established, and wide practice variability exists. The purpose of this study was to evaluate common clinical strategies across multiple pediatric trauma centers in order to develop a consensus-based standard clinical pathway. METHODS: A multicenter, retrospective review was conducted of children with high-grade (AAST grade III-V) pancreatic injuries treated with NOM between 2010-15...
June 6, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28583604/prediction-of-the-fertility-of-stallion-frozen-thawed-semen-using-a-combination-of-computer-assisted-motility-analysis-microscopical-observation-and-flow-cytometry
#4
I Barrier Battut, A Kempfer, N Lemasson, L Chevrier, S Camugli
Spermatozoa from some stallions do not maintain an acceptable fertility after freezing and thawing. The selection of frozen ejaculates that would be suitable for insemination is mainly based on post-thaw motility, but the prediction of fertility remains limited. A recent study in our laboratory has enabled the determination of a new protocol for the evaluation of fresh stallion semen, combining microscopical observation, computer-assisted motility analysis and flow cytometry, and providing a high level of fertility prediction...
July 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28583602/effects-of-environmental-temperature-and-season-on-hair-coat-characteristics-physiologic-and-reproductive-parameters-in-shetland%C3%A2-pony-stallions
#5
Kathrin Schmidt, Katharina Deichsel, Rodrigo Arruda de Oliveira, Jörg Aurich, Natascha Ille, Christine Aurich
We hypothesized that housing of stallions in a thermoneutral temperature zone during autumn and winter does not only influence metabolism and hair shedding but also improves the characteristics of raw and processed semen. Fertile Shetland pony stallions were followed from October to June. This time coincided with the seasons autumn, winter and spring. Ponies were kept in outside paddocks (group CON, n = 8) or in indoor stables (group ST, n = 8) from October to March when ST stallions returned to outdoor paddocks, but ponies remained in the same groups...
July 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28558006/pulse-doppler-ultrasound-as-a-tool-for-the-diagnosis-of-chronic-testicular-dysfunction-in-stallions
#6
Jose M Ortiz-Rodriguez, Luis Anel-Lopez, Patricia Martín-Muñoz, Mercedes Álvarez, Gemma Gaitskell-Phillips, Luis Anel, Pedro Rodríguez-Medina, Fernando J Peña, Cristina Ortega Ferrusola
Testicular function is particularly susceptible to vascular insult, resulting in a negative impact on sperm production and quality of the ejaculate. A prompt diagnosis of testicular dysfunction enables implementation of appropriate treatment, hence improving fertility forecasts for stallions. The present research aims to: (1) assess if Doppler ultrasonography is a good tool to diagnose stallions with testicular dysfunction; (2) to study the relationship between Doppler parameters of the testicular artery and those of sperm quality assessed by flow cytometry and (3) to establish cut off values to differentiate fertile stallions from those with pathologies causing testicular dysfunction...
2017: PloS One
https://www.readbyqxmd.com/read/28549567/how-stallions-influence-the-dynamic-of-collective-movements-in-two-groups-of-domestic-horses-from-departure-to-arrival
#7
Léa Briard, Jean-Louis Deneubourg, Odile Petit
The role of leader in polygynous species has been solely attributed to the male for some time, but recent studies have shown decision making to be distributed within the group. However, the specific reproductive strategy and behavioural repertoire of males in polygynous species such as horses may mean that these individuals still have the potential to play a specific role during decision making. To investigate this subject, we thoroughly studied the behaviour of two domestic stallions during collective movements of their group...
May 23, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28488462/evaluation-of-the-effects-of-performance-dentistry-on-equine-rideability-a-randomized-blinded-controlled-trial
#8
Sébastien Moine, Shannon Axiak Flammer, Päivi de Jesus Maia-Nussbaumer, Micaël D Klopfenstein Bregger, Vincent Gerber
OBJECTIVE: This study attempted to determine: 1) if degree of dental malocclusion assigned prior to dental treatment was associated with equine rideability, assessed using a standardized score and 2) if performance dentistry improved this score. ANIMALS: Thirty-Eight Franches-Montagnes stallions. METHODS: All horses were examined and assigned a dental malocclusion score by a veterinary dentist and randomized into two groups: sham treatment (Groups S) or performance dentistry including occlusal equilibration (Group D)...
May 10, 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28460664/the-effect-of-flash-freezing-temperature-on-stallion-sperm-dna-structure
#9
R Serafini, D D Varner, W Bissett, T L Blanchard, S R Teague, C C Love
The effect of flash-freezing storage temperature on stallion sperm DNA has not been evaluated. Commonly, sperm are flash-frozen at various temperatures to preserve sperm DNA prior to analysis. It is unclear whether the temperature at which sperm are frozen and stored may affect the results of DNA assays. In this study, the neutral comet assay was used to evaluate the effect of flash-freezing storage temperature (freezer [-60 °C], dry ice [-78.5 °C], liquid nitrogen [-196 °C]) compared to fresh sperm DNA structure...
June 2017: Theriogenology
https://www.readbyqxmd.com/read/28450643/ancient-genomic-changes-associated-with-domestication-of-the-horse
#10
Pablo Librado, Cristina Gamba, Charleen Gaunitz, Clio Der Sarkissian, Mélanie Pruvost, Anders Albrechtsen, Antoine Fages, Naveed Khan, Mikkel Schubert, Vidhya Jagannathan, Aitor Serres-Armero, Lukas F K Kuderna, Inna S Povolotskaya, Andaine Seguin-Orlando, Sébastien Lepetz, Markus Neuditschko, Catherine Thèves, Saleh Alquraishi, Ahmed H Alfarhan, Khaled Al-Rasheid, Stefan Rieder, Zainolla Samashev, Henri-Paul Francfort, Norbert Benecke, Michael Hofreiter, Arne Ludwig, Christine Keyser, Tomas Marques-Bonet, Bertrand Ludes, Eric Crubézy, Tosso Leeb, Eske Willerslev, Ludovic Orlando
The genomic changes underlying both early and late stages of horse domestication remain largely unknown. We examined the genomes of 14 early domestic horses from the Bronze and Iron Ages, dating to between ~4.1 and 2.3 thousand years before present. We find early domestication selection patterns supporting the neural crest hypothesis, which provides a unified developmental origin for common domestic traits. Within the past 2.3 thousand years, horses lost genetic diversity and archaic DNA tracts introgressed from a now-extinct lineage...
April 28, 2017: Science
https://www.readbyqxmd.com/read/28444749/transurethral-removal-of-a-cystic-urolith-in-a-mare-using-a-laparoscopic-specimen-pouch
#11
A J Williamson, A O McKinnon
CASE REPORT: Cystic urolithiasis is the most common form of urolithiasis reported in horses. In contrast to the gelding or stallion, clinical disease is less common in the mare and manual removal techniques are possible because of their shorter, wider urethral anatomy. However, these manual removal techniques can be traumatic and are limited by the size of the urolith. This report describes the use of a commercial laparoscopic specimen pouch to remove a cystic urolith in a mare. CONCLUSION: This approach may allow the extraction of larger uroliths per urethra in the mare, while affording some protection to the mucosa of the bladder neck and urethra...
May 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28437733/the-establishment-of-in%C3%A2-vitro-culture-and-drug-screening-systems-for-a-newly-isolated-strain-of-trypanosoma-equiperdum
#12
Keisuke Suganuma, Shino Yamasaki, Nthatisi Innocentia Molefe, Peter Simon Musinguzi, Batdorj Davaasuren, Ehab Mossaad, Sandagdorj Narantsatsral, Banzragch Battur, Badgar Battsetseg, Noboru Inoue
Dourine is caused by Trypanosoma equiperdum via coitus with an infected horse. Although dourine is distributed in Equidae worldwide and is listed as an internationally important animal disease by the World Organization for Animal Health (OIE), no effective treatment strategies have been established. In addition, there are no reports on drug discovery, because no drug screening system exists for this parasite. A new T. equiperdum strain was recently isolated from the genital organ of a stallion that showed typical symptoms of dourine...
April 13, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/28424285/equine-arteritis-virus-has-specific-tropism-for-stromal-cells-and-cd8-t-and-cd21-b-lymphocytes-but-not-glandular-epithelium-at-the-primary-site-of-persistent-infection-in-the-stallion-reproductive-tract
#13
Mariano Carossino, Alan T Loynachan, Igor F Canisso, R Frank Cook, Juliana R Campos, Bora Nam, Yun Young Go, Edward L Squires, Mats H T Troedsson, Thomas Swerczek, Fabio Del Piero, Ernest Bailey, Peter J Timoney, Udeni B R Balasuriya
Equine arteritis virus (EAV) has a global impact on the equine industry being the causative agent of equine viral arteritis (EVA), a respiratory, systemic, and reproductive disease of equids. A distinctive feature of EAV infection is that it establishes long-term persistent infection in 10 to 70% of infected stallions (carriers). In these stallions, EAV is only detectable in the reproductive tract and viral persistence occurs despite the presence of high serum neutralizing antibodies. Carrier stallions constitute the natural reservoir of the virus as they continuously shed EAV in their semen...
April 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28419788/the-italian-stallions-of-cli-value-care-delivery
#14
EDITORIAL
Gary M Ansel, Michael R Jaff
Critical Limb ischemia with long segment occlusive disease typically reserved for surgery can be treated with a high degree of success in expert centers via an endovascular approach Nitinol woven stents appear to have high patency with proper deployment in all PAD groups Increased early expense that is associated with decreased re-intervention can be cost effective.
April 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28407867/the-relationship-between-mitochondrial-dna-copy-number-and-stallion-sperm-function
#15
Christa R Darr, Luis E Moraes, Richard E Connon, Charles C Love, Sheila Teague, Dickson D Varner, Stuart A Meyers
Mitochondrial DNA (mtDNA) copy number has been utilized as a measure of sperm quality in several species including mice, dogs, and humans, and has been suggested as a potential biomarker of fertility in stallion sperm. The results of the present study extend this recent discovery using sperm samples from American Quarter Horse stallions of varying age. By determining copy number of three mitochondrial genes, cytochrome b (CYTB), NADH dehydrogenase 1 (ND1) and NADH dehydrogenase 4 (ND4), instead of a single gene, we demonstrate an improved understanding of mtDNA fate in stallion sperm mitochondria following spermatogenesis...
May 2017: Theriogenology
https://www.readbyqxmd.com/read/28407865/the-effect-of-dual-hemisphere-breeding-on-stallion-fertility
#16
S R Walbornn, C C Love, T L Blanchard, S P Brinsko, D D Varner
Breeding records were analyzed from 24 Thoroughbred stallions that were subjected to dual-hemisphere breeding (DH), including novice (first-year; NOV; n = 11) and experienced (EXP; n = 13) stallions. Fertility variables included seasonal pregnancy rate, pregnancy rate per cycle, and first-cycle pregnancy rate. In addition, values for book size, total number of covers, distribution of mare type (maiden, foaling, and barren) within a stallion's book, cycles per mare, and mare age were examined. Some data were also categorized by mare type (maiden-M, foaling-F, and barren-B)...
May 2017: Theriogenology
https://www.readbyqxmd.com/read/28395341/electrophilic-aldehyde-products-of-lipid-peroxidation-selectively-adduct-to-heat-shock-protein-90-and-arylsulfatase-a-in-stallion-spermatozoa%C3%A2
#17
Sally E Hall, R John Aitken, Brett Nixon, Nathan D Smith, Zamira Gibb
Oxidative stress is a major determinant of mammalian sperm function stimulating lipid peroxidation cascades that culminate in the generation of potentially cytotoxic aldehydes. The aim of this study was to assess the impact of such aldehydes on the functionality of stallion spermatozoa. The impact of exposure to exogenous acrolein (ACR) and 4-hydroxynonenal (4HNE) was manifested in a highly significant dose- and time-dependent increase in mitochondrial reactive oxygen species (ROS), total cellular ROS, a decrease in sperm motility, and a time-dependent increase in lipid peroxidation...
January 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28365926/total-and-free-iodothyronine-changes-in-response-to-transport-of-equidae-equus-asinus-and-equus-caballus
#18
Esterina Fazio, Pietro Medica, Cristina Cravana, Adriana Ferlazzo
In this study the effects of short distance road transport on total and free iodothyronine changes in 12 stallions (Equus asinus and Equus caballus) were evaluated. Donkeys (n = 6) and horses (n = 6) were transported for a distance of 50 km. Blood samples were collected 1 week before transport in basal conditions, 1 week later immediately before loading, and after transport and unloading. After transport, donkeys showed significant increases in circulating T4 (P≤0.01), fT3 (P≤0.001), and fT4 (P≤0.01) levels; while horses had significant increases in circulating T3, fT3 and fT4 (P≤0...
March 31, 2017: Veterinaria Italiana
https://www.readbyqxmd.com/read/28344405/biochemical-components-of-seminal-plasma-and-their-correlation-to-the-fresh-seminal-characteristics-in-marwari-stallions-and-poitou-jacks
#19
Thirumala Rao Talluri, Gorakh Mal, Sanjay Kumar Ravi
AIM: To investigate various biochemical components of seminal plasma in Marwari stallions and Poitou Jacks and to find out their correlation with that of the seminal characteristics. MATERIALS AND METHODS: In this study, semen was collected from six Marwari stallions and six Poitou jacks aged from 4 to 6 years and with known fertility status. The semen collection from the stallions were collected during the breeding season, i.e., between the months of April and June...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28336184/atrial-fibrillation-management-in-a-breeding-stallion
#20
N Heliczer, K Mitchell, O Lorello, J Dauvillier, D Burger, C C Schwarzwald, C Navas de Solis
A 20-year-old warmblood breeding stallion presented to a University practice for semen collection and evaluation was incidentally diagnosed with atrial fibrillation (AF). Electrocardiogram recordings during breeding revealed inappropriately rapid tachycardia and occasional ventricular premature depolarizations/aberrant ventricular conduction. Transvenous electrical cardioversion was performed. After successful cardioversion the horse displayed supraventricular ectopy and atrial contractile dysfunction and was administered sotalol hydrochloride in an attempt to decrease the risk of AF recurrence...
March 20, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
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