How to Identify Moldy or Spoiled Hay
Feeding moldy or spoiled hay can harm horses, cattle, goats, and other livestock, leading to respiratory issues, digestive problems, and even poisoning. Because hay quality can decline during harvesting, storage, or transport, being able to recognize mold and spoilage is essential for protecting your animals. This guide explains the sight, smell, texture, and moisture clues that help you identify problem hay—and know when to discard it. 1. Look for Changes in Color Color is often the first visible sign of hay spoilage. Warning Colors: Gray or white patches: Common indicators of mold growth Black areas: Often caused by moisture pockets or severe mold Dull yellow or brown: Suggests age, sun bleaching, or weather damage Very dark hay: May have been overheated during baling or storage Good hay should appear green or greenish-gold. While some discoloration happens naturally over time, strong gray or dark patches usually signal mold. 2. Smell the Hay Carefully Smell is one...