Tag Archives: Prostaglandin

Patent ductus arteriosus

In the fetus, the ductus arteriosus functions to bypass the pulmonary circulation. It is a short arterial connection arising from the sixth aortic arch which carries blood from the pulmonary artery to the aorta and systemic circulation. The ductus normally closes in the first few weeks after birth to form the ligamentum arteriosum. Closure is… Read More »

Endocrine function

Invertebrate endocrine systems The endocrine or hormonal system (i.e. the use of body fluid-borne chemical messengers) together with the nervous system make up the control and coordinating systems of animals. However, there are major differences in the way in which control is achieved within the two systems. Firstly, the endocrine system works by transmitting chemical… Read More »

Treatment of Systemic Arterial Thromboembolism

Euthanasia In cats that are in acute pain that have a poor prognosis due to severe cardiomyopathy, euthanasia is a humane means of dealing with the problem. Systemic throm-boembolism is often a horrible complication of cardiomyopathy, the treatment options are all relatively poor, and rethrombosis is common. Consequently, although one should not automatically give up… 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 »

Criteria For Induction Of Parturition

Before labor is induced in a mare, the ability of the fetus to survive extrauterine life must be confirmed. Several physiologic processes occur within the fetus before delivery to ensure that the foal will be viable after birth. The equine fetus is unique in that final maturation occurs only 24 to 48 hours before delivery.… Read More »

Uterine Torsion

The causes of uterine torsion in the mare are not well-defined. The condition is much more common in cattle; in that species a large, term fetus has been implicated as a major risk factor. The majority of uterine torsions in cows occur at term and most are thought to be a direct result of fetal… 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 »

Preparation Of The Mare For Artificial Insemination

The ultimate goal of insemination is to provide semen in a time frame that coordinates the availability of capacitated spermatozoa with the arrival of the transported oocyte within the mare’s oviduct. It is also the responsibility of the veterinarian to ensure the optimum intrauterine environment that supports the developing embryo. With these objectives in mind,… 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 »