Journal of Equine Veterinary Science This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Uterine Bacterial Isolates From Mares and Their Resistance to Antimicrobials
Uterine infections are an important cause of reduced fertility in mares and contribute to a major economic loss in the equine industry. Antimicrobials are commonly used to treat endometritis. Antimicrobial resistance is a growing problem in veterinary and human medicine. Knowledge of commonly encountered bacteria infecting mares ’ reproductive tracts and their respective antimicrobial susceptibilities should improve treatment efficacy in mares with endometritis, as well as aid in ongoing antimicrobial safeguarding. (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: A.R. Mitchell, M. Diel de Amorim, A.J. Thachil, C. Altier, S.H. Cheong Source Type: research

Concentrations of Gentamicin In Serum, Intrauterine Fluid, and Endometrial Tissue After Intravenous Administration in Healthy Mares
Endometritis in mares remains an important clinical condition for the equine breeding industry. The treatment of choice is antimicrobial therapy, commonly administered into the uterus. Disadvantages of the intrauterine (i.u.) route, however, include the risk of contamination, dependence on estrous cycle stage and inhomogeneous distribution within the endometrium. Therefore, the objective of the present study was to assess gentamicin concentrations in serum, i.u. fluid (IUF), and endometrial tissue (ET) of non-pregnant healthy mares after intravenous (i.v.) gentamicin administration. (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: T.S. Witte, K. Hahn, S. Duerr Source Type: research

Gene Characterization of Biofilm-forming Escherichia coli Equine Reproductive Tract Isolates
Biofilms evade the immune system and antibiotics, leading to persistence of infection and increases in antibiotic resistance. Static biofilms form when aggregates of bacteria adhere to a surface and secrete an extracellular polymeric substance. Formation of biofilms in the equine reproductive tract is theorized to be a significant cause of chronic equine endometritis, but there is little research establishing in vivo causality. The purpose of this study is to improve understanding of genes involved with biofilm formation by E. (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: S. Frable, D.P. Beehan, M. Jacob, A. Rogers, K.E. Ellis, K. Von Dollen, T.M. Beachler, C.S. Bailey, S.K. Lyle Source Type: research

High Prevalence of Subclinical Endometritis in Problem Mares – Effect of Activation and Treatment on Fertility
ß-hemolytic Streptococcus equi subsp. zooepidemicus is the most commonly isolated pathogen in the uterus of mares. We recently demonstrated that bacterial activation, using a commercial growth medium, bActivate instilled in the uterus, enable diagnosis of subclinical S. zooepidemicus endometritis ( Petersen et al. Veterinary Microbiology, 2015;179:119-125). To assess the effect of subclinical infections on fertility activation was introduced as a diagnostic aid during preparation of barren problem mares for breeding at a well-managed Irish thoroughbred stud farm during the breeding seasons 201 5+2016. (Source: Journal of ...
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: M.R. Petersen, A. Rosenbrock, M. Osborne, A.M. Bojesen Source Type: research

Circulating and Cultured Anti-M üllerian Hormone Concentrations Following Hemi-ovariectomy in Anestrous Mares
Anti-M üllerian hormone (AMH), a member of the transforming growth factor β superfamily, was first discovered for its involvement with Müllerian duct (paramesonephric duct) regression in male fetuses during sexual differentiation. However, AMH also plays an important role in folliculogenesis in postnata l females. AMH is secreted primarily by granulosa cells of small follicles and inhibits primordial follicle recruitment. Circulating AMH concentration has a positive relationship with the antral follicle count and decreases with age as females near reproductive senescence. (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: B.E. Liebig, K.A. Davis, K.M. Klohonatz, P.E. Graham, D.A. Hendrickson, J.T. Easley, E.S. Hackett, P.J. Pinedo, D.C. Eckery, J.E. Bruemmer Source Type: research

Endometrial Alterations After the Transfer of Embryonic Remains
The uterus is a dynamic physiological system in which cell proliferation and differentiation occur during pregnancy [1]. A swift endometrial adaptation occurs when the embryo enters the uterus. Ciliated cell populations decrease progressively, and other histomorphometric endometrial changes occur from the 7th day after ovulation when compared to cyclic mares [2]. (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: C.A. Camacho, J.E. Caballeros, N. Cazales, R.C. Mattos Source Type: research

Induction of Ovulation With Histrelin Acetate in Brazilian Northeastern Jennies
This study aimed to compare the efficacy and time of ovulation after induction of the GnRH analogue Histrelin and hCG in Brazilian Northeastern jennies (Equus asinus). (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: L.E.F. Canuto, S.N. Oliveira, T.M.S. Cavalero, V.F.C. Scheeren, L.T. Rodrigues, F.E.M.R. Sousa, L.C. Riccetto, J.A. Dell'Aqua Junior, F.O. Papa Source Type: research

Identification by MALDI-TOF Mass Spectometry and Biofilm Formation of Bacteria Isolated From Mare Uterus
Endometritis is one of the main causes of fertility reduction in mares. It can cause several complications such as inability to become pregnant, early embryonic death, abortion, placentitis, neonatal septicemia and post-partum metritis (Troedsson MHT, 1999, Theriogenology, 52, 461-471). A correct diagnosis, together with characterization of degree and type of inflammation, is of extreme relevance and therapeutic protocol should be specific for each (Cadario M, 2014; The Practitioner, vol.1,pp. 21 –25). (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: J.A.A. Nascimento J únior, E.R.G. Oliveira, A.V.A. Lima, T.D. Silva, M.T.S. Correia, G.F. Carneiro Source Type: research

Investigation Into the Safety and Clinical Effects of a New Progesterone Releasing Intra-vaginal Device (PRID ®Delta) in Mares
A variety of progesterone releasing intra-vaginal devices have been utilised in clinical broodmare practice. The PRID ®Delta (Ceva, France) is a triangular plastic delivery device containing 1.55g progesterone. The goal of the present study was to evaluate the clinical effects of the PRID®Delta regarding delivery of progesterone, comfort and safety. Ten transitional mares were prospectively studied from the day o f device insertion (day 0), through removal of the device 10 days later (day 10), to 7 days post removal (day 17). (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: J.R. Crabtree, S. Mateu-S ánchez, C.D. Cooke, I.G. Rogers, D.I. Rendle, S. Wilsher Source Type: research

Combination of hCG and Deslorelin Acetate on the Induction of Ovulation in Mares: Changes in Follicular Fluid Protein Profile
Hormonal treatments for induction of ovulation are routinely used in equine industry. Human chorionic gonadotropin (hCG) or analogues of gonadotropin-releasing hormone (GnRH) like deslorelin, have been tested for efficiency, time of ovulation and dose administered [1,2]. The use of hCG in commercial oocyte transfer programs resulted in failure of some follicles to respond, and no oocytes or immature oocytes were collected [3]. However, the maturation of the follicle and oocyte after use of the association hCG and deslorelin acetate was reliable [4]. (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: G.O. Santos, H.B.A. Bastos, M.A.F. S á, J.C.F. Jacob, C.A. Wolf, R.C. Mattos, A.P. Neves Source Type: research

Free IGF1 and Insulin Concentrations in the Follicular Fluid and Follicle IGF1 Receptor Expression Differ According to Follicle Size in the Mare
Insulin (INS) and insulin growth like factor 1 (IGF1) are some of the substances involved in metabolic regulation of reproduction, and in particular, of follicular growth. (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: L.S. Besen, M.J. Estrad é, A.M. Pimentel, A.T. Esmeraldino, A. Meikle, R.C. Mattos Source Type: research

A New, Simplified Protocol for Timed Artificial Insemination in Donkeys
Donkey breeding activities are increasing, mostly in European Mediterranean countries, due to the rediscovery of the nutritional properties of jennies ’ milk. This milk is fairly similar to the human one, representing the best choice for the nutrition of children intolerant to cow’s milk proteins (1). In bovine reproduction, oestrus synchronisation provides many different protocols that allow a Timed Artificial Insemination (TAI), useful to ma nage big herds of cows without oestrus detection (2). On the contrary, there are very few studies on oestrous synchronization in jennies (3), and research on artificial inseminat...
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: D. Fanelli, D. Panzani, A. Rota, F. Salari, M. Martini, F. Camillo Source Type: research

Ovarian and Uterine Dynamics in Criollo Breed Mares
Criollo is a Brazilian breed originated from horses brought by the European explorers. These animals reproduced freely during 400 years in the southern part of the American continent in a hostile environment where only the strongest could survive. Nowadays, Criollo horses have become a very important breed in Brazil as well as other parts of the world. Due to its great importance in the equine industry, studies concerning the reproductive physiology of this breed have become crucial for adequate management. (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: L.H. Duval, SM Fiala Rechsteiner, G.D.A. Gastal, M.O. Gastal, R.C. Mattos, E.L. Gastal Source Type: research

Follicle Deviation in Miniature Mares
follicle, deviation, Miniature Horse, mares, cycling mares (Source: Journal of Equine Veterinary Science)
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: A.P. Neves, F.F. Albrecht, R.M. Gregory, R.C. Mattos, E.R. Ara újo, V.F. Penteado, G.O. Oliveira Source Type: research

Spatial Distribution of Preantral Follicles in the Equine Ovary
The equine ovary has a peculiar architecture among mammals, and recent histological studies have produced limited information regarding the distribution and localization of preantral follicles on the ovarian parenchyma. Therefore, knowledge on follicle spatial distribution can be helpful for understanding ovarian dynamics/plasticity and preantral follicle migration according to age, and for targeting areas with greater numbers of preantral follicles through biopsy procedures. The aim of this study was to assess the distribution and localization of equine preantral follicles according to: (i) age, (ii) ovarian portion (late...
Source: Journal of Equine Veterinary Science - June 23, 2018 Category: Veterinary Research Authors: B.G. Alves, K.A. Alves, G.D.A. Gastal, M.O. Gastal, J.R. Figueiredo, E.L. Gastal Source Type: research