Tag Archives: Progesterone

Altrenogest (Regu-Mate, Matrix)

Oral Progestin Highlights Of Prescribing Information • Progestational drug used in horses to suppress estrus or maintain pregnancy when progestin deficient; used in swine to synchronize estrus • May be used in dogs for luteal deficiency or as a treatment to prevent premature delivery • Many “handling” warnings for humans (see below) • Very sensitive… Read More »

Aglepristone (Alizin, Alizine)

Injectable Progesterone Blocker Highlights Of Prescribing Information • Injectable progesterone blocker indicated for pregnancy termination in bitches; may also be of benefit in inducing parturition or in treating pyometra complex in dogs & progesterone-dependent mammary hyperplasia in cats • Not currently available in USA; marketed for use in dogs in Europe, South America, etc. •… Read More »

Perineal and Cervical Lacerations

Three natural barriers protect the uterus from bacterial contamination. The cervix, vulvar lips, and vestibular sphincter are all susceptible to trauma during foaling, and especially during obstetrical manipulations. Serious life-threatening complications, however, seldom result from these injuries. Perineal Lacerations Cervical Lacerations Although cervical lacerations are most commonly associated with dystocia, they can occur during unassisted… Read More »

Stallion Behavior Problems

This post briefly outlines several of the most common behavior problems of breeding stallions. These problems include self-mutilation, inadequate libido, rowdy breeding behavior, specific erection dysfunction, mounting and thrusting difficulties, frenzied hyperactive behavior, and specific ejaculation dysfunction. Also briefly outlined is the common problem of residual stallionlike behavior in geldings. Inadequate Libido Specific stallion libido… Read More »

Placentitis: Clinical Signs and Diagnosis

Clinical signs include those observed in mares with pending abortion. Udder development, premature lactation, and cervical softening are often seen before the mare aborts. Vaginal discharge may or may not proceed abortions. Once clinical signs develop, the disease has reached an advanced stage and treatment may not always be successful. Evaluation of the equine placenta… Read More »

Oocyte Transfer

Oocyte transfer is the placement of a donor’s oocyte into the oviduct of a recipient. The recipient can be inseminated within the uterus or within the oviduct. Placement of the oocyte and sperm within the recipient’s oviduct is more accurately termed gamete intrafallopian transfer (GIFT). The first successful oocyte transfer was done in 1989; however,… Read More »

Mare Behavior Problems

This post briefly outlines the four most common complaints concerning reproductive behavior in mares: (1) failure to show estrus or to stand for breeding, (2) maternal behavior problems, (3) stallionlike behavior, and (4) estrus cycle-related performance problems in mares. Failure To Show Estrus Or To Stand For Breeding Research and clinical experience consistently indicate that… Read More »

Enlarged Ovaries

Anovulatory Follicles Large, anovulatory follicles are a normal finding during the spring and fall transition periods. Anovulatory follicles can exceed 10 cm in diameter and may persist for several weeks. The cause is likely to be abnormal estrogen production by the follicle and/or insufficient release of pituitary gonadotropin to induce ovulation. Often the ultrasonographic image… Read More »

Foal Heat-Breeding

Commercial horse breeding farms operate under the same economic rules as other forms of intensive livestock production. Use of stallions must be efficient, and mares must produce the greatest number of foals possible. This requires intensive management. The primary reason for foal heat-breeding is to increase the efficiency of the production unit. The performance of… Read More »