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Moldy or Dusty Hay, Heaves, and Horses
  by Robert N. Oglesby DVM


Introduction » Hay Molds and Heaves » Detecting Mold Spores in Hay » Prevention » The only hay available is smoky! » More Info 

It is just a fact of life that all baled hay develops some amount of mold. In well put up hay, hay that is suitable for horses, the amount is undetectable by inspection. However, if hay is bailed before it is adequately dry or becomes wet during storage, molds flourish producing large numbers of spores. Chronic exposure to large amounts of mold spores causes a serious allergic condition in horses called Heaves, chronic obstructive pulmonary disease (COPD), and more recently has been referred to as recurrent obstructive airway disease (ROAD). This article discusses the detection of moldy hay and what to do about it. We have an article on Diagnosing and Treating Heaves.
      ~Word Count: 2609 words (The average magazine page contains about 600 words);
      ~Last Updated: November 21, 2015;
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Discussions on Moldy Hay, Heaves, and Horses
  Titles Subtopics Posts Updated
iconMold vs Mold Spores in hayDec 3, 15
iconHay question - mildew spots?21 Feb 13, 12
iconWhat to Add to Horses Diet when Feeding Poor Possibly Moldy HayNov 17, 15
iconQuick Answer Needed About Hay Bales & Moisture42 Jul 26, 10
iconJust venting re: 1st hay cut59 Jun 18, 09
iconIs this moldy ?Jul 9, 08
iconWHY DID I THINK I COULD MAKE HAY???28 Jun 19, 08
iconQuestion on HeavesApr 16, 04
iconPurchased Moldy Hay17 Sep 22, 05
iconHay, Good or Bad?Aug 23, 02
iconGrass Hay cubes as substitute for Hay gone badDec 26, 01
iconWetting hay for horses that are sensitive to dust and spores in hayOct 19, 00
iconSteaming hay?Dec 2, 15
iconHay steamers11 Jul 22, 10
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