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https://www.readbyqxmd.com/read/28205669/distal-border-synovial-invaginations-of-the-equine-distal-sesamoid-bone-communicate-with-the-distal-interphalangeal-joint
#1
Julien Olive, Marine Videau
OBJECTIVES: Macroscopic studies have suggested a link between distal border synovial invaginations of the navicular bone and the distal interphalangeal joint. However, many practitioners consider that these invaginations are directly and solely related to navicular disease. The objective was to investigate the communication pattern of these synovial invaginations with the synovial compartments of the distal interphalangeal joint and the navicular bursa, using minimally invasive imaging techniques...
February 16, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28192783/androgen-insensitivity-syndrome-in-a-family-of-warmblood-horses-caused-by-a-25-bp-deletion-of-the-dna-binding-domain-of-the-androgen-receptor-gene
#2
G Eastman Welsford, Rikke Munk, Daniel A F Villagómez, Poul Hyttel, W Allan King, Tamas Revay
Testicular feminization, an earlier term coined for describing a syndrome resulting from failure of masculinization of target organs by androgen secretions during embryo development, has been well documented not only in humans but also in the domestic horse. The pathology, actually referred to as androgen insensitivity syndrome (AIS), has been proposed to follow an X-linked recessive pattern of inheritance in some horse breeds already investigated. Affected individuals are characterized by a female phenotype but with a stallion genotype of 64,XY SRY+ constitution...
February 14, 2017: Sexual Development: Genetics, Molecular Biology, Evolution, Endocrinology, Embryology, and Pathology of Sex Determination and Differentiation
https://www.readbyqxmd.com/read/28179013/reac-technology-as-optimizer-of-stallion-spermatozoa-liquid-storage
#3
Fiammetta Berlinguer, Valeria Pasciu, Sara Succu, Ignazio Cossu, Sabrina Caggiu, Daniela Addis, Alessandro Castagna, Vania Fontani, Salvatore Rinaldi, Eraldo Sanna Passino
BACKGROUND: REAC technology (acronym for Radio Electric Asymmetric Conveyor) is a technology platform for neuro and bio modulation. It has already proven to optimize the ions fluxes at the molecular level and the molecular mechanisms driving cellular asymmetry and polarization. METHODS: This study was designed to verify whether this technology could extend spermatozoa life-span during liquid storage, while preserving their functions, DNA integrity and oxidative status...
February 8, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28177358/genetic-parameters-of-insect-bite-hypersensitivity-in-the-old-grey-kladruber-horse
#4
J Citek, L Vostry, H Vostra-Vydrova, M Brzakova, V Prantlova
The objective of this study was to assess the genetic parameters of insect bite hypersensitivity (IBH) in the Old Grey Kladruber horse, an original Czech warmblood horse breed. Insect bite hypersensitivity is a recurrent allergic skin disease affecting horses worldwide. Its etiology is multifactorial. The defect is genetically controlled, and the starting impulse is a bite by midges of the spp. and less frequently spp. Knowledge about the associated genes is limited. Horses were kept by the National Stud in Kladruby (1,146 measurements) and by 10 private breeders (63 measurements)...
January 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28171739/in-vitro-addition-of-docosahexaenoic-acid-improves-the-quality-of-cooled-but-not-frozen-thawed-stallion-semen
#5
D M Silva, S A Holden, A Lyons, J C Souza, S Fair
The aim of the present study was to assess the effect of the addition of docosahexaenoic acid (DHA) on the in vitro quality of cooled and frozen-thawed stallion semen. In Experiment 1, semen from 10 stallions was collected (three ejaculates per stallion). Semen was diluted to 100×106 spermatozoa mL-1 with 0.02mM vitamin E (VE) and 0, 1, 10 or 20ng mL-1 DHA and frozen. Semen was thawed and total motility (TM), rapid progressive motility (PM), acrosome integrity, membrane fluidity and morphology were assessed...
February 8, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28163275/blindness-associated-with-nasal-paranasal-lymphoma-in-a-stallion
#6
Yuto Sano, Minoru Okamoto, Youhei Ootsuka, Kazuya Matsuda, Shigeki Yusa, Hiroyuki Taniyama
A 29-year-old stallion presented with bilateral blindness following the chronic purulent nasal drainage. The mass occupied the right caudal nasal cavity and right paranasal sinuses including maxillary, palatine and sphenoidal sinuses, and the right-side turbinal and paranasal septal bones, and cribriform plate of ethmoid bone were destructively replaced by the mass growth. The right optic nerve was invaded and involved by the mass, and the left optic nerve and optic chiasm were compressed by the mass which was extended and invaded the skull base...
February 5, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28161600/equine-viral-arteritis-in-breeding-and-sport-horses-in-central-spain
#7
Fatima Cruz-Lopez, Richard Newton, Ana Sanchez-Rodriguez, Joanne Ireland, Lapo Mughini-Gras, Miguel A Moreno, Paloma Fores
Equine viral arteritis (EVA) may have a high economic impact on breeding stud farms due to the occurrence of EVA-associated abortion outbreaks and the ability of the virus to persist in carrier stallions. While the consequences of EVA in premises with sport horses are usually less severe, the first confirmed outbreak of EVA in Spain occurred in a riding club in Barcelona, but no data on the seroprevalence of EVA in sport horses have been reported in Spain. Given the importance of both Spanish Purebred (SP) breeding horses and sport horses for Spain's equine industry, the aim of this study was to determine and compare the seroprevalence of EVA in these two horse populations in central Spain...
January 27, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28139164/toward-a-choice-based-judgment-bias-task-for-horses
#8
Sara Hintze, Emma Roth, Iris Bachmann, Hanno Würbel
Judgment bias tasks for nonhuman animals are promising tools to assess emotional valence as a measure of animal welfare. In view of establishing a valid judgment bias task for horses, the present study aimed to evaluate 2 versions (go/no-go and active choice) of an auditory judgment bias task for horses in terms of acquisition learning and discrimination of ambiguous cues. Five mares and 5 stallions were randomly assigned to the 2 designs and trained for 10 trials per day to acquire different operant responses to a low-frequency tone and a high-frequency tone, respectively...
January 31, 2017: Journal of Applied Animal Welfare Science: JAAWS
https://www.readbyqxmd.com/read/28132964/isolation-of-equine-herpesvirus-3-ehv-3-from-equine-coital-exanthema-of-two-stallions-and-sero-epidemiology-of-ehv-3-infection-in-japan
#9
Rikio Kirisawa, Yuko Toishi, Ai Akamatsu, Kosuke Soejima, Taisuke Miyashita, Nobuo Tsunoda
In the spring of 2015, two stallions reared in Farms A and B in Hokkaido in Japan showed symptoms of equine coital exanthema. Equine herpesvirus 3 (EHV-3) was isolated from penis swab samples of both stallions, and the isolates from each stallion in Farms A and B were designated as SS-1 and YS-1 strains, respectively. BamHI restriction profiles of SS-1 and Japanese reference strain Iwate-1 were indistinguishable, but the BamHI-A fragment of YS-1 was larger than those of SS-1 and Iwate-1 by 1.9 kbp because of the lack of two BamHI sites...
January 27, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28123140/occurrence-of-equine-coital-exanthema-ece-in-stallions-in-japan-and-effectiveness-of-treatment-with-valacyclovir-for-ece
#10
Yuko Toishi, Nobuo Tsunoda, Rikio Kirisawa
Equine coital exanthema (ECE) has been reported in many countries, but equine herpesvirus 3 (EHV-3) has been isolated only once in Japan. In 2015, symptoms of ECE were found, and EHV-3 was isolated in two stallions. Valacyclovir, an anti-herpesvirus agent, was administered orally. The stallions rested from mating for more than two weeks, causing enormous financial losses because of their high fees. This is the first study in which valacyclovir was administered for ECE. Though valacyclovir treatment did not shorten the duration of healing, the affected area did not expand after administration of valacyclovir...
January 26, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28114737/a-comparison-of-fecal-steroid-metabolite-concentrations-between-harem-and-bachelor-stallions-in-a-free-ranging-population-of-przewalski-s-horses-equus-ferus-przewalskii
#11
Maureen D'Souza-Anjo, Bruce W Christensen, Kristin Brabender, Waltraut Zimmermann, Philip H Kass, Franz Schwarzenberger
The aim of this study was to determine whether concentrations of reproductive steroid hormone metabolites significantly differed between harem stallions and bachelor stallions in the free ranging group of Przewalski's horses (Equus ferus przewalskii) at the Hortobágy National Park in Hungary. Throughout the study, fecal samples were collected from 21 harem stallions and 15 bachelor stallions and analyzed for immunoreactive estrogen and androgen metabolites. Harem stallions demonstrated significantly higher concentrations of estrogen (P < 0...
January 23, 2017: Zoo Biology
https://www.readbyqxmd.com/read/28111814/testosterone-serum-profile-semen-characteristics-and-testicular-biometry-of-mangalarga-marchador-stallions-in-a-tropical-environment
#12
B Waddington, J M Penitente-Filho, Jgs Neves, R O Pinho, A Y Chaya, P P Maitan, C O Silveira, M G Neves, Sef Guimarães, G R de Carvalho, J D Guimarães
This study was conducted to characterize the daily profile of testosterone secretion and its mean concentrations in the four seasons as well as to evaluate the semen characteristics and testicular biometry of Mangalarga Marchador stallions throughout the year in a tropical region. Three stallions were submitted to semen collections and evaluation of testicular biometry every 14 days along a year. Blood samples were collected once at the middle of each season, in a 20-min interval during 24 hr in order to evaluate the testosterone secretion profiles among seasons...
January 23, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28066938/effect-of-gender-and-exercise-on-haematological-and-biochemical-parameters-in-holsteiner-horses
#13
A Andriichuk, H Tkachenko
The objective of this study was to assess the influence of exercise of average intensity in the haematological and biochemical values, as well as acidic resistance of erythrocytes in mares and stallions of Holsteiner breed. A total of seventeen horses of Holstein breed (seven mares and 10 stallions aged 6 years) were used in this study. The blood samples were assessed for haematocrit (HCT) value, haemoglobin concentration (HGB), the amount of red blood cells (RBC), white blood cells (WBC), platelets (PLT), leucogram, mean corpuscular haemoglobin concentration (MCHC), mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), red cell distribution width (RDW) and platelet distribution width (PDW)...
January 8, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28058738/epigallocatechin-3-gallate-egcg-and-green-tea-polyphenols-do-not-improve-stallion-semen-parameters-during-cooling-at-4%C3%A2-c
#14
D Bucci, M Spinaci, B Mislei, B Gadani, G Rizzato, C C Love, C Tamanini, G Galeati, G Mari
Stallion semen storage for artificial insemination is mainly based on liquid cooled storage. In many stallions this technique maintains sperm quality for an extended period of time (24-72 hr) at 7°C. While this technique is commonly used in the horse industry, there can be a decline in fertility in some stallions, due to an inability of their sperm to tolerate the cool storage process. The aim of the present work was to evaluate the effect of two natural antioxidants (epigallocatechin-3-gallate (EGCG) at 20, 60 and 120 μm and green tea polyphenols, and p at ...
January 6, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28043372/relationships-among-stallion-fertility-and-semen-traits-using-estimated-breeding-values-of-german-warmblood-stallions
#15
Maren Gottschalk, Harald Sieme, Gunilla Martinsson, Ottmar Distl
A high quality of stallion semen is of particular importance for maximum reproductive efficiency. In the present study, we estimated the relationships among estimated breeding values (EBVs) of semen traits and EBVs for the paternal component of the pregnancy rate per estrus cycle (EBV-PAT) for 100 German Warmblood stallions using correlation and general linear model analyses. The most highly correlated sperm quality trait was total number of progressively motile sperm (r = 0.36). EBV-PAT was considered in three classes with stallions 1 SD below (<80), around (80-120), and above (>120) the population mean of 100...
February 2017: Theriogenology
https://www.readbyqxmd.com/read/28043365/cooled-storage-of-equine-semen-does-not-induce-major-changes-in-sperm-dna-methylation
#16
Rodrigo Arruda de Oliveira, Dragos Scarlet, Natascha Ille, Christine Aurich
A decrease in fertility of equine semen during cooled-storage so far has mainly been attributed to changes in sperm membrane function. In the present study we hypothesized that cooled-storage also changes the sperm DNA methylation level. For this purpose, semen was collected from 10 fertile stallions and processed for cooled-storage at 5 °C. Two final concentrations, 50 × 10(6) and 100 × 10(6) cells/mL, were used. Semen was analyzed for total motility, progressive motility, membrane integrity, phosphatidylserine translocation (PST), mitochondrial membrane potential and chromatin condensation, immediately after processing and at 24 h-intervals until 72 h of storage...
February 2017: Theriogenology
https://www.readbyqxmd.com/read/28033647/a-new-method-for-evaluating-stallion-sperm-viability-and-mitochondrial-membrane-potential-in-fixed-semen-samples
#17
F J Peña, B A Ball, E L Squires
Multiparametric assessment of stallion sperm quality using flow cytometry can be a useful adjunct in semen evaluation; however, the availability of flow cytometers in veterinary practice is limited. The ability to preserve and transport sperm samples for later flow cytometric analysis using fixable probes would potentially facilitate this process. In the current study, we validated the combination of live/dead Zombie Green® (a fixable dye used to assess live and dead sperm) and MitoTracker Deep Red® (used to assess mitochondrial membrane potential)...
December 29, 2016: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28017453/risk-factors-for-equine-fractures-in-thoroughbred-flat-racing-in-north-america
#18
Stamatis Panagiotis Georgopoulos, Tim D H Parkin
The aim of this paper is to identify risk factors associated with equine fractures in flat horse racing of Thoroughbreds in North America. Equine fractures were defined as any fracture sustained by a horse during a race. This was a cohort study that made use of all starts from the racecourses reporting injuries. The analysis was based on 2,201,152 racing starts that represent 91% of all official racing starts in the USA and Canada from 1st January 2009-31st December 2014. Approximately 3,990,000 workout starts made by the 171,523 Thoroughbreds that raced during that period were also included in the analysis...
December 12, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28011345/genotyping-of-friesian-horses-to-detect-a-hydrocephalus-associated-c-1423c-t-mutation-in-b3galnt2-using-pcr-rflp-and-pcr-pira-methods-frequency-in-stallion-horses-in-m%C3%A3-xico
#19
Miguel Angel Ayala-Valdovinos, Jorge Galindo-García, David Sánchez-Chiprés, Theodor Duifhuis-Rivera
Hydrocephalus in Friesian horses is an autosomal recessive hereditary disease that can result in an abortion, a stillbirth, or euthanization of a newborn foal. Here, the hydrocephalus-associated c.1423C > T mutation in B3GALNT2 gene was detected with PCR-RFLP and PCR-PIRA methods for horse genotyping. A preliminary genotyping survey was performed on 83 randomly selected Friesian stallion horses to determine the current allele frequency in Mexico. The frequency of the mutant T allele was 9.6%.
December 21, 2016: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/28007317/examining-the-role-of-follow-up-skeletal-surveys-in-non-accidental-trauma
#20
Rebecca D Powell-Doherty, Nora E Raynor, Donna A Goodenow, David G Jacobs, Anthony Stallion
BACKGROUND: Diagnosing NAT (non-accidental trauma) includes a skeletal survey to identify injuries. A follow-up survey is performed for missed injuries. This study examines the necessity of follow-up surveys. METHODS: The trauma database identified cases of suspected NAT in <4 years olds (2013-2014). Data were stratified by survey, age, injury, then analyzed for the prevalence of findings. All analyses (relative risk, prevalence and odds ratios) utilized RealStats Resource Pack (Trento, Italy)...
December 11, 2016: American Journal of Surgery
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