Can you worm pregnant mares? This is a common question among horse owners and veterinarians alike. Worming, or the process of administering dewormers to horses, is an essential part of equine health management. However, when it comes to pregnant mares, the process must be approached with caution to ensure the safety of both the mare and her developing foal.
Worming pregnant mares is a delicate balance between protecting the mare from internal parasites and avoiding potential harm to the foal. Internal parasites, such as roundworms, tapeworms, and bots, can cause a range of health issues in horses, including colic, anemia, and poor growth. However, certain dewormers can cross the placenta and affect the developing fetus, potentially leading to adverse effects on the foal.
In this article, we will explore the various factors to consider when worming pregnant mares, including the types of dewormers that are safe to use, the best timing for worming, and the importance of regular fecal egg counts to monitor the effectiveness of the worming program.
Types of Dewormers for Pregnant Mares
There are several types of dewormers available on the market, and not all of them are suitable for use in pregnant mares. It is crucial to consult with a veterinarian to determine the best deworming protocol for your pregnant mare. Some common dewormers that are considered safe for use during pregnancy include:
1. Fenbendazole: This broad-spectrum dewormer is considered safe for use in pregnant mares and is effective against a variety of parasites.
2. Pyrantel: Pyrantel is another broad-spectrum dewormer that is safe for use in pregnant mares and can be used to treat roundworms, tapeworms, and bots.
3. Ivermectin: While ivermectin is generally safe for use in pregnant mares, it is important to follow the recommended dosage and consult with a veterinarian before administering it.
Timing and Frequency of Worming
The timing and frequency of worming pregnant mares can vary depending on the individual mare’s risk of exposure to parasites and the specific dewormer being used. Generally, it is recommended to worm pregnant mares at least twice during their pregnancy, with the first worming typically occurring around the third month of gestation. The second worming can be done around the seventh month, just before the mare is due to give birth.
It is important to follow the veterinarian’s recommendations regarding the timing and frequency of worming, as over-worming can lead to resistance and decreased efficacy of the dewormers.
Monitoring with Fecal Egg Counts
Regular fecal egg counts (FECs) are an essential tool for monitoring the effectiveness of the worming program in pregnant mares. FECs involve collecting a sample of the mare’s feces and examining it under a microscope to count the number of worm eggs present. This information can help determine whether the mare is still at risk of parasitic infection and whether additional deworming is necessary.
By maintaining a regular schedule of FECs and consulting with a veterinarian, horse owners can ensure that their pregnant mares are protected from parasites while minimizing the risk of harm to the developing foal.
In conclusion, while the question “Can you worm pregnant mares?” is a valid concern, it is possible to safely worm pregnant mares with the right dewormers, timing, and monitoring. By working closely with a veterinarian and following best practices, horse owners can help ensure the health and well-being of both the mare and her foal.
