Marie Rosenthal, MS

Articles by Marie Rosenthal

Hormones and Mare Conception Rates

Treatment with equine follicle-stimulating hormone (eFSH) does not increase healthy mares' conception rates, researchers recently reported.

The hormone eFSH is used to stimulate donor mares' ovaries to increase the number of Read More

Local Analgesia Aids Castration Pain Control

Adding a local analgesic to the systemic pain medications used during castration relieved pain in colts, researchers recently reported.

The researchers observed three groups of 12 colts. All of the horses received pain medication bef Read More

Normal Vital Signs in Your Horse

Pull out the thermometer and stethoscope to check your horse's temperature, pulse (heart rate), and respiration (TPR) as part of your horse's routine care. Normal ranges of basic health parameters vary among horses. Read More

Semen Centrifugation Speeds Examined in Study

Theriogenologists typically recommend low centrifugation speeds for separating equine semen from seminal plasma in ejaculate, as it was unknown whether higher speeds would damage the cells. However, higher forces did not damage sperm in a new s Read More

Equine Flu Transmission Examined in Report

Public health authorities are looking into how equine influenza spread among 5,000 horses during an outbreak in Australia in 2007. Although the team identified a few possible methods for spreading the virus, including spread by birds and other Read More

Traveling Legally with Horses

Make sure you meet paperwork requirements before shipping horses, whether across oceans or state lines. Read More

Exercise Causes Slight Hoof Changes, Researchers Report

About 30% of lameness in horses is associated with foot problems, yet little research focuses on the biomechanics and function of the equine hoof. Researchers recently found slight differences in horses' hooves following exercise. Read More

First Leptospirosis Abortions Reported in England

Diagnostic pathologists at the Animal Health Trust (AHT), Newmarket recently published the first report of equine abortions in England caused by leptospirosis. Read More

Transport Stress and EHV-1

Dormant equine herpesvirus-1 (EHV-1) resides in the horse's nervous system, where it can reactivate when the horse's immune system is compromised by stress or illness. Results of a study on transport stress and EHV-1 reactivation. Read More

Topical NSAID Permeation Through Horse Skin Investigated

Veterinarians in Argentina recently tried to use versions of the topical NSAID (non-steroidal anti-inflammatory drug) diclofenac made for human pain management on horses, but found horses' skin does not absorb those formulations of the Read More

Study: Lactate Levels Could Guide Equine Conditioning Programs

Low-intensity exercise over long periods was an effective approach to conditioning horses, as indicated by blood lactate levels measured in a new study. Blood lactate, the ionized form of lactic acid, which is a byproduct of Read More

Endurance Horse Study Reveals Common Complaints, Resolutions

A lot of things can happen over the many miles of an endurance event. California veterinarians recently tracked the incidence and resolution of equine medical issues encountered during endurance competition.

C. Langdon Fielding, Read More

Colic Surgery: Preventing Postoperative Diarrhea

A diarrhea treatment might also be useful for preventing diarrhea in horses recovering from colic surgery, said researchers in a new study.

"Diarrhea following colic surgery is common with certain conditions such as Read More

Researchers Track EHV-5 Incidence, Effects in Europe

Equine herpesvirus-5, which had previously been reported in horses in the United States, is also present in the European horse population, researchers recently reported. They found the virus in horses without any signs of disease (known as Read More

Soaking Hay Key to Stable Dust Reduction

Horse owners' selection and preparation of their animals' feed has a greater influence on concentrations of dust and endotoxin in the stable than the type of bedding used, researchers recently reported. Read More

Colic: Blood Glucose Test Might Aid Vets

Blood glucose tests might provide useful information to veterinarians treating horses with severe, persistent colic, potentially helping them to predict the severity of the horse’s condition and its chance of Read More

Insulin Resistance: Variation in Blood Test Levels

A blood sample is usually a key step in diagnosing a horse as insulin resistant. But a recent study showed that one sample might not give enough information for an accurate diagnosis, because the horse's blood sugar and insulin fluctuates daily. Read More

Anesthetic Drug Propofol Might have a Role in Equine Sedation

Many medical procedures are performed while the horse is under standing chemical restraint, but anesthesia in horses can be risky. One study cites an almost 2% mortality rate for equine patients within seven days of receiving general Read More

Monitoring Fetal Growth via Ultrasonography

Ultrasonography is a valuable tool for detecting pregnancy and establishing pregnancy loss, but it can also be used to evaluate equine fetal growth, said W.K. (Karin) Hendriks, DVM, Dipl. ECAR. Veterinarians could use a combination of Read More

Measuring Ponies: Laser Device Might Give More Accurate Height

A laser device for measuring horses and ponies might give more reliable and objective measurements than a traditional stick, researchers said. Ponies currently competing in Fédération Equestre Internationale (FEI) events must not measure more than Read More

Study Sheds Doubt on Marbles' Effect on Mare Heat Cycles

Many people have offered solutions to overcome the problems of inconsistent performance while mares are in heat. One method popular with owners today is the implantation of marbles as glass intrauterine devices (IUDs).

"The original paper Read More

Joint Problems: Blood Tests Might Aid Early Screening

Research using biomarkers in horse's blood to predict whether he is at risk of developing bone/joint disorders Read More

Training Alters Stride in Racehorses

Training mature racehorses produces a decrease in the protraction (extension) time of the forelimb and might reduce the risk of training-induced injuries, said Marta Ferrari, DrMedVet, PhD, MRCVS, of Park Veterinary Centre in Watford, U.K, and Read More

Colic: Diet Can Reduce Enterolith Risk, Review Finds

If your horse is at risk for intestinal stones or enteroliths (a common cause of obstruction-induced colic in horses), consider replacing an alfalfa-based diet with grass hay, said Diana M. Hassel, DVM, PhD, of Colorado State University. Read More

Study: Neurologic Signs Not Limited to One EHV-1 Strain

Anytime a horse develops fever, malaise, and a stumbling gait or inability to stand, owners should contact a veterinarian immediately--they might be dealing with equine herpesvirus-1 (EHV-1). In addition, the animal should be quarantined to Read More