Copper: Goats Need It, Sheep Can Be Poisoned by It

Goats genuinely need copper

The Extension goat specialists describe copper as essential: it helps form red blood cells, hair pigment, connective tissue and enzymes, and it supports immune function and nerve conduction. Deficiency shows up as anemia, a bleached-looking rough coat, diarrhea and weight loss. Young goats can develop progressive incoordination and paralysis, especially in the rear legs.

The molybdenum wrinkle

High dietary molybdenum pushes copper absorption down and can cause a deficiency even when copper looks adequate on paper. Extension’s rule of thumb: at least four times as much copper as molybdenum in the diet. Some regions have molybdenum-rich soils, which is why local Extension advice matters more than a generic label.

Sheep live under the opposite rule

• Sheep, hair and wool breeds alike, are sensitive to copper toxicity, while goats require levels similar to beef cattle.
• Oregon State’s mineral tables put the sheep copper requirement around 7 to 11 ppm, with a maximum tolerable level of 25 ppm.
• The liver stores copper. Once storage capacity is exceeded, a stressor as ordinary as being chased can trigger a rapid hemolytic crisis.

Practical rules for a mixed barn

Keep separate minerals for each species, and feed the goat mineral where sheep cannot reach it. Do not assume an all-stock blend is safe for sheep. Angora goats may be more sensitive to copper than meat and dairy goats, so even within one species, ask before you guess. Your veterinarian and county Extension office can read your actual forage and water situation.

Oregon State’s mineral tables exist for exactly this: balancing what you feed against the actual requirements of each species. Read the tag on any mineral bag before it goes in the feeder, and when the numbers do not clearly fit both species, they fit one.

Write down who gets which mineral

A mixed barn runs on small details. In the PawLine app you can keep a note per pen: which mineral is offered, when it was refreshed, and any coat or condition changes with dates, so a slow drift shows up in the record before it shows up in a crisis.