Bot Eggs

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Bot Eggs

This is a discussion on Bot Eggs within the Horse Health forums, part of the Keeping and Caring for Horses category
  • What are the yellow dots on horse
  • My horse has little yellow eggs on him

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    07-27-2009, 12:45 PM
Bot Eggs

My horse has little yellow dots all over him. I was told they are bot eggs. What can I do to keep them off? What can I do to get them off?
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    07-27-2009, 12:48 PM
Green Broke
Use a bot fly knife. They should come in your local tack store. You take the (relatively blunt, of course) knife and 'shave' off the eggs. They work very well.
    07-27-2009, 12:49 PM
Ok. I'll pick one up. How do I keep then from getting them?
    07-27-2009, 12:57 PM
Green Broke
I think just keep shaving them off. Maybe bug spray? There might be some remedy but I'm not familiar with it. Try lots of bug spray, I guess.
    07-27-2009, 01:04 PM
Green Broke
About Bot Fly Infestations

The Botfly, or Gasterophilus, lays its eggs on the forelimbs, chest and head regions of horses between May and October and these can be seen as small yellow dots in the horse's coat.
Horses find the Bot Fly particularly annoying and this causes them to lick and bite themselves. Unfortunately this action stimulates the bot eggs to hatch and the larvae then burrow into the mucous membranes of lips, gums, cheeks and tongue of the horse. Although this does not appear to cause any discomfort to the horse, the larvae incubate for 3-4 weeks before migrating to the stomach where they grow and attach themselves to the stomach wall of the horse. The larvae remain in the stomach until the spring when they pass with the faeces, pupating on the ground to emerge as adult flies one or two months later to repeat the cycle.
Symptoms Of Bot Fly Infestations

Large quantities of bot eggs in the stomach of the horse can cause loss of condition, a dry coat, increased temperature, restlessness, kicking at the belly and lack of appetite. This may be accompanied with intermittent diarrhoea or constipation. The larvae can cause gastritis, stomach ulcers and in severe cases perforation of the stomach causing fatal peritonitis.
Treatment Of Bot Fly Infestations

Botfly infestation can be treated by worming the horse with a suitable wormer that will ensure that larvae in the stomach are killed and Ivermectin is highly effective against all stages of Botfly larvae. Although the Bot is not a "worm" an increasing number of wormers are effective against Bot larvae infestation.
Prevention Of Bot Fly Infestations

In order to prevent bot fly infestations horses should be wormed regularly with a suitable wormer. Bot eggs should be removed from the horse's coat daily either by hand requiring "pinching" the eggs off or using a Bot knife. Turning horses out after dark and bringing in early in the morning or providing a darkened shelter will also help.

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