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https://www.readbyqxmd.com/read/28741737/effect-of-exogenous-progesterone-administration-on-luteal-sensitivity-to-pgf-during-the-early-development-of-the-corpus-luteum-in-mares-and-cows
#1
A Garcia-Muñoz, X Valldecabres-Torres, J R Newcombe, J Cuervo-Arango, E Garcia-Rosello
The objective of this study was to determine the effect of exogenous progesterone administration at ovulation and during the early development of the CL, on its future sensitivity to a single administration of PGF2a in mares and cows. Horse Retrospective reproductive data from an equine clinic in the UK during three breeding seasons were used. Mares were divided into: control group, cycles with single ovulations; double ovulation group cycles with asynchronous double ovulations; and PRID group: cycles with single ovulations and treatment with intravaginal progesterone device (CIDR) immediately after the ovulation...
July 25, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28741731/the-evolutionary-history-of-the-dmrt3-gait-keeper-haplotype
#2
E A Staiger, M S Almén, M Promerová, S Brooks, E G Cothran, F Imsland, K Jäderkvist Fegraeus, G Lindgren, H Mehrabani Yeganeh, S Mikko, J L Vega-Pla, T Tozaki, C J Rubin, L Andersson
A previous study revealed a strong association between the DMRT3:Ser301STOP mutation in horses and alternate gaits as well as performance in harness racing. Several follow-up studies have confirmed a high frequency of the mutation in gaited horse breeds and an effect on gait quality. The aim of this study was to determine when and where the mutation arose, to identify additional potential causal mutations and to determine the coalescence time for contemporary haplotypes carrying the stop mutation. We utilized sequences from 89 horses representing 26 breeds to identify 102 SNPs encompassing the DMRT3 gene that are in strong linkage disequilibrium with the stop mutation...
July 25, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28738738/a-pilot-study-comparing-the-effect-of-orally-administered-esomeprazole-and-omeprazole-on-gastric-fluid-ph-in-horses
#3
K E Huxford, A J Dart, N R Perkins, R Bell, L B Jeffcott
AIMS: To compare the efficacy of an enteric coated esomeprazole paste with an enteric coated omeprazole paste to increase gastric pH after oral administration in horses. METHODS: Nine adult Standardbred horses were randomly assigned to three groups, each containing three horses, for a study comprising three phases of 10 days, with an 18-day washout period between each phase. In each phase, three horses received either 0.5 mg/kg esomeprazole, 1 mg/kg omeprazole or a placebo, as an oral paste, once daily for 10 days (Days 0-9)...
July 24, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28738008/randomized-placebo-controlled-study-of-the-effects-of-yunnan-baiyao-on-hemostasis-in-horses
#4
SallyAnne L Ness, Amelia H Frye, Thomas J Divers, Mark Rishniw, Hollis N Erb, Marjory B Brooks
OBJECTIVE To determine effects of oral administration of Yunnan Baiyao on platelet activation, coagulation, and fibrinolysis in healthy horses. ANIMALS 12 healthy adult horses. PROCEDURES In a randomized blinded crossover study that included a 4-week washout period between treatments, horses were orally administered a paste containing Yunnan Baiyao (15 mg/kg) or placebo at 12-hour intervals for 3 days. Blood samples were collected before start of treatment (time 0) and at 24 and 72 hours for a CBC, measurement of fibrinogen concentration, coagulation screening tests, and a panel of assays to assess platelet activation (including ADP- and collagen-induced aggregation and closure times, flow-cytometric variables of platelet-leukocyte aggregates, platelet membrane P-selectin and phosphatidylserine expression, and microparticle release), von Willebrand factor (vWF) concentration, and cofactor activity...
August 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28738006/effect-of-lidocaine-on-inflammation-in-equine-jejunum-subjected-to-manipulation-only-and-remote-to-intestinal-segments-subjected-to-ischemia
#5
Anje G Bauck, Astrid Grosche, Alison J Morton, A Sarah Graham, Thomas W Vickroy, David E Freeman
OBJECTIVE To examine effects of continuous rate infusion of lidocaine on transmural neutrophil infiltration in equine intestine subjected to manipulation only and remote to ischemic intestine. ANIMALS 14 healthy horses. PROCEDURES Ventral midline celiotomy was performed (time 0). Mild ischemia was induced in segments of jejunum and large colon. A 1-m segment of jejunum was manipulated by massaging the jejunal wall 10 times. Horses received lidocaine (n = 7) or saline (0.9% NaCl) solution (7) throughout anesthesia...
August 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28737381/cisplatin-binding-sites-in-human-h-chain-ferritin
#6
Giarita Ferraro, Silvia Ciambellotti, Luigi Messori, Antonello Merlino
The aim of this work is to identify the cisplatin binding sites on human H-chain ferritin. High-resolution X-ray crystallography reveals that cisplatin binds four distinct protein sites, that is, the side chains of His136 and Lys68, the side chain of His105, the side chain of Cys90 and the side chain of Cys102. These Pt binding sites are compared with those observed for the adduct that cisplatin forms upon encapsulation within horse spleen L-chain ferritin (87% identity with human L-chain ferritin).
July 24, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28737212/a-genome-wide-association-study-for-equine-recurrent-airway-obstruction-in-european-warmblood-horses-reveals-a-suggestive-new-quantitative-trait-locus-on-chromosome-13
#7
D Schnider, S Rieder, T Leeb, V Gerber, M Neuditschko
Recurrent airway obstruction (RAO), also known as heaves, is an asthma-like respiratory disease. Its development is strongly influenced by environmental risk factors such as sensitization and exposure to moldy hay, straw bedding and stabling indoors. A hereditary component has been documented in previous studies; however, so far no causative genetic variant that influences the risk of developing RAO has been identified. In this study, we revised an existing dataset and selected 384 horses for genotyping on the Affymetrix high-density equine SNP array...
July 24, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28736852/successful-medical-treatment-of-an-aspergillus-terreus-mycetoma-of-the-nostril-lip-in-a-16-year-old-fjord-pony-gelding-with-pituitary-pars-intermedia-dysfunction
#8
Pia K Randleff-Rasmussen, Marion Mosca, Frédéric Knoerr, Didier Pin, Isabelle Desjardins
BACKGROUND: Mycetoma is a chronic, proliferative lesion of cutaneous/subcutaneous tissue characterized by draining tracts and granules in the discharge caused by actinomycetes (actinomycetoma) or filamentous fungi (eumycotic mycetoma). OBJECTIVES: This case report describes the unusual finding of a cutaneous mycetoma of the lateral wing of the right nostril in a gelding. ANIMAL: A 16-year-old Fjord gelding with suspected pituitary pars intermedia dysfunction (PPID) was presented for evaluation of a nonpainful, firm and raised mass involving the lateral wing of the right nostril and the lip...
July 23, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28735601/impact-of-equine-assisted-reproductive-technologies-standard-embryo-transfer-or-intracytoplasmic-sperm-injection-icsi-with-in-vitro-culture-and-embryo-transfer-on-placenta-and-foal-morphometry-and-placental-gene-expression
#9
Orlando A Valenzuela, Anne Couturier-Tarrade, Young-Ho Choi, Marie-Christine Aubrière, Justin Ritthaler, Pascale Chavatte-Palmer, Katrin Hinrichs
Assisted reproductive technologies (ARTs) such as intracytoplasmic sperm injection (ICSI), in vitro embryo culture and embryo transfer (ET) may be associated with alterations in fetal and placental development. In horses, ET has been used for decades. More recently, in vitro embryo production by ICSI and in vitro culture, followed by embryo transfer (ICSI-C) has become an accepted method for clinical foal production. However, no information is available on the effects of ICSI-C or even of standard ET itself on placental and neonatal parameters in horses...
July 24, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28735060/individual-roles-of-brain-and-serum-alcohol-dehydrogenase-isoforms-in-regulation-of-alcohol-consumption-in-spf-wistar-rats
#10
Vsevolod V Pavshintsev, Nikita A Mitkin, Olga Y Frolova, Ekaterina A Kushnir, Olga A Averina, Maxim L Lovat
Alcohol dehydrogenases (ADH) are key enzymes of ethanol metabolism that mediate its oxidation to acetaldehyde. ADHs are also able to oxidize some types of neurotransmitters such as dopamine, serotonin and norepinephrine. Increased level of ADHs activity, induced by chronic alcohol consumption, is presumably associated with disturbed neurotransmitters metabolism that leads to stable alcohol craving. As earlier reported, intraperitoneal administration of 4-methilpirasole (non-specific inhibitor of ADHs) has shown to provide a short-term anti-alcoholic effect, but individual roles of ADH isoforms in this process were still unclear...
July 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28733347/ultrastructural-characteristics-and-immune-profile-of-equine-mscs-from-fetal-adnexa
#11
Eleonora Iacono, Luisa Pascucci, Barbara Rossi, Cinzia Bazzucchi, Aliai Lanci, Monica Ceccoli, Barbara Merlo
Both in human and equine species, mesenchymal stem cells (MSCs) from amniotic membrane (AM) and Wharton's jelly (WJ), may be particularly useful for immediate use or in later stages of life, after cryopreservation in cell bank. The aim of this study was to compare equine AM- and WJ-MSCs in vitro features, that may be relevant for their clinical employment. MSCs were more easily isolated from WJ, even if MSCs derived from AM exhibited more rapid proliferation (P<0.05). Osteogenic and chondrogenic differentiation were more prominent in MSCs derived from WJ...
July 21, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28733228/progressive-erosion-of-the-relaxin1-gene-in-bovids
#12
Loggan Malone, Juan C Opazo, Peter L Ryan, Federico G Hoffmann
The relaxin/insulin-like (RLN/INSL) gene family is a group of genes that encode peptide hormones involved in a variety of physiological functions related to reproduction. Previous studies have shown that relaxin plays a key role in widening of the pubic bone during labor and in gamete maturation. Because of these functions, studying the evolution of RLN1, the gene encoding for relaxin, is relevant in livestock species, most of which belong in the group Laurasiatheria, which includes cow, pig, horse, goat, and sheep in addition to bats, cetaceans and carnivores...
July 18, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28730713/investigation-of-genetic-diversity-and-inbreeding-in-a-japanese-native-horse-breed-for-suggestions-on-its-conservation
#13
Akio Onogi, Kouichi Shirai, Tomoko Amano
Because native breeds can serve as genetic resources for adapting to environment changes, their conservation is important for future agroecosystems. Using pedigree analysis, we investigated genetic diversity and inbreeding in Japanese Hokkaido native horses, which have adapted to a cold climate and roughage diet. Genetic diversity was measured as the number of founders and the effective number of founders, ancestors and genomes. All metrics imply a decrease in genetic diversity. A comparison of these metrics suggested that pedigree bottlenecks contributed more than did random gene losses to the reduction of genetic diversity...
July 21, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28729625/stable-isotopes-reveal-diet-shift-from-pre-extinction-to-reintroduced-przewalski-s-horses
#14
Petra Kaczensky, Martina Burnik Šturm, Mikhail V Sablin, Christian C Voigt, Steve Smith, Oyunsaikhan Ganbaatar, Boglarka Balint, Chris Walzer, Natalia N Spasskaya
The Przewalski's horse (Equus ferus przewalskii), the only remaining wild horse within the equid family, is one of only a handful of species worldwide that went extinct in the wild, was saved by captive breeding, and has been successfully returned to the wild. However, concerns remain that after multiple generations in captivity the ecology of the Przewalski's horse and / or the ecological conditions in its former range have changed in a way compromising the species' long term survival. We analyzed stable isotope chronologies from tail hair of pre-extinction and reintroduced Przewalski's horses from the Dzungarian Gobi and detected a clear difference in the isotopic dietary composition...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28728368/assessment-of-frozen-storage-duration-effect-on-quality-characteristics-of-various-horsemeat-muscles
#15
Pil Nam Seong, Hyun Woo Seo, Jin Hyoung Kim, Soo Hyun Cho, Yoon Seok Kim, Beom Young Park, Hoa Van Ba
Objective: The study aimed at assessing the effects of frozen storage duration on quality characteristics, lipid oxidation and sensory quality of various horse muscles. Methods: Five representative muscles: longissimus dorsi (LD), gluteus medius (GM), semimembranosus (SM), biceps femoris (BF) and triceps brachii (TB) at 24 h post-mortem obtained from 28-mo-old Jeju female breed horses (n=8) were used in the present investigation. The muscles were vacuum-packaged and frozen at -20oC for 120, 240 and 360 days...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28727902/glucocorticoid-assessment-in-the-domestic-horse-the-impact-of-time-and-climatic-variables-on-sample-integrity
#16
K Yarnell, S L Walker
BACKGROUND: Assessment of faecal glucocorticoid metabolites (FGM) offers a non-invasive method of monitoring adrenal activity in domestic horses. Sample collection is on an opportunistic basis, and if samples are not fresh or have been exposed to the elements before they are identified, then they may not accurately reflect FGM concentration. OBJECTIVES: To explore the impact of a range of environmental conditions upon the integrity of FGM levels in equine faeces...
July 20, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28727072/the-equine-glucose-dependent-insulinotropic-polypeptide-receptor-a-potential-therapeutic-target-for-insulin-dysregulation
#17
M H Kheder, M N Sillence, L M Bryant, M A de Laat
Metabolic disease is a significant problem that causes a range of species-specific comorbidities. Recently, a better understanding of glucose-dependent insulinotropic polypeptide (GIP) biology has led to the suggestion that inhibiting its action may attenuate obesity in several species. In horses, antagonism of GIP may also reduce hyperinsulinemia, which leads to insulin-associated laminitis, a painful comorbidity unique to this species. However, little is known about GIP in horses. The aims of this study were to examine the tissue distribution of equine GIP receptors (eGIPR), to determine whether eGIPR can be blocked using a GIP antagonist not tested previously in horses, and to establish whether there is any association between GIP concentrations and body mass in this species...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727062/workload-of-official-contests-net-cost-of-transport-and-metabolic-power-of-mangalarga-marchador-horses-of-marcha-batida-or-picada-gaits
#18
J Lage, M G Fonseca, G G M de Barros, W H Feringer-Júnior, G T Pereira, G C Ferraz
This study aimed to characterize the maximum heart rate (HR) and the intensity of official marcha contests (OMC) and to compare the cost of transport (COT) and metabolic power (Pmet) of Mangalarga Marchador (MM) horses of marcha batida (MB) and marcha picada (MP) gaits. Twenty-two MM horses participated in this study. The experiment was conducted in 3 phases: 1) maximum effort test (MET), 2) OMC, and 3) standardized marcha test (SMT). To characterize the HR, 19 horses (14 MB and 5 MP) underwent a MET. Of those, 13 (9 MB and 4 MP) were monitored during the OMC, which consisted of 4 stages: marcha, walk, functional trial, and rest...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726911/feeding-a-sustainable-chemical-industry-do-we-have-the-bioproducts-cart-before-the-feedstocks-horse
#19
Bruce E Dale
A sustainable chemical industry cannot exist at scale without both sustainable feedstocks and feedstock supply chains to provide the raw materials. However, most current research focus is on producing the sustainable chemicals and materials. Little attention is given to how and by whom sustainable feedstocks will be supplied. In effect, we have put the bioproducts cart before the sustainable feedstocks horse. For example, bulky, unstable, non-commodity feedstocks such as crop residues probably cannot supply a large-scale sustainable industry...
July 20, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28726730/estimating-the-availability-of-potential-homes-for-unwanted-horses-in-the-united-states
#20
Emily Weiss, Emily D Dolan, Heather Mohan-Gibbons, Shannon Gramann, Margaret R Slater
There are approximately 200,000 unwanted horses annually in the United States. This study aimed to better understand the potential homes for horses that need to be re-homed. Using an independent survey company through an Omnibus telephone (land and cell) survey, we interviewed a nationally projectable sample of 3036 adults (using both landline and cellular phone numbers) to learn of their interest and capacity to adopt a horse. Potential adopters with interest in horses with medical and/or behavioral problems and self-assessed perceived capacity to adopt, constituted 0...
July 20, 2017: Animals: An Open Access Journal From MDPI
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