Upper Darby, PA City Data Upper Darby, PA is a city with great restaurants, attractions, history and people. There are around 38,348 people who live in Upper Darby and approximately 550,864 who live in Delaware County.
Molybdenum is a trace mineral found in foods such as milk, cheese, cereal grains, legumes, nuts, leafy vegetables, and organ meats.
In general, copper levels in a diet for sheep with molybdenum levels at three ppm or slightly higher can usually tolerate 20 to 25 ppm copper. Sheep fed diets lower in molybdenum than this tolerate lower levels of copper. Especially if the sheep are of British or Texel origin.