Mare/Foal Interaction

Abby L. Fowden, of the University of Cambridge in the United Kingdom, discussed nutritive and endocrine functions of the placenta at the first Equine Placenta Workshop held at the University of Kentucky Gluck Equine Research Center on Dec. 5-6, 2003. She said the functions of the placenta are as a barrier, for transport of nutrients and waste, nutrient production, and hormone production.

Share
Favorite
Close

No account yet? Register

ADVERTISEMENT

Abby L. Fowden, of the University of Cambridge in the United Kingdom, discussed nutritive and endocrine functions of the placenta at the first Equine Placenta Workshop held at the University of Kentucky Gluck Equine Research Center on Dec. 5-6, 2003. She said the functions of the placenta are as a barrier, for transport of nutrients and waste, nutrient production, and hormone production.

Placental efficiency of the horse is good. She defined that by looking at grams of fetus that can be produced based on grams of placenta. She said the horse comes out on top when comparing various mammals, with 20 grams of fetus produced per gram of placenta based on maximum values. For comparison, humans only produce six grams of fetus per gram of placenta.

Oxygen transfer across the placenta is important. Her research has shown that while sheep reach a plateau where the ewe can’t transfer higher levels of oxygen, the horse can transfer ever-increasing amounts of oxygen. She said a similar result is seen in glucose levels from the mare to the fetus–there isn’t a plateau. Fowden suggested that knowledge might help practitioners aid a fetus that is undergoing some sort of stress or when a placenta is compromised (i.e., they can administer high amounts of oxygen, knowing it will reach the fetus).

She reminded that as the fetus grows, its demand for nutrients also rises. The equine placenta keeps on growing throughout gestation by increasing the length of the villi and increasing their number of branches (villi are the projections of epithelial cells that connect with the corresponding maternal crypts). This increases the surface area for exchange of nutrients. Any increase in length of villi has a huge effect on exchange of nutrients and oxygen because of the expanded area of the tissues

Create a free account with TheHorse.com to view this content.

TheHorse.com is home to thousands of free articles about horse health care. In order to access some of our exclusive free content, you must be signed into TheHorse.com.

Start your free account today!

Already have an account?
and continue reading.

Share

Written by:

Kimberly S. Brown is the editor of EquiManagement/EquiManagement.com and the group publisher of the Equine Health Network at Equine Network LLC.

Related Articles

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from TheHorse.com

Sponsored Content

Weekly Poll

sponsored by:

Where do you primarily feed your horse?
326 votes · 326 answers

Readers’ Most Popular

Sign In

Don’t have an account? Register for a FREE account here.

Need to update your account?

You need to be logged in to fill out this form

Create a free account with TheHorse.com!