- Rough coats
- Decreased performance
- Unusual eating habits like consuming dirt or chewing on tool handles, trees, board fences or another animal’s mane or tail.
- In poultry, an increase in pecking behavior, feather eating, general flock nervousness, and/or reduced egg production.
- Anemia
- Fence and bark chewing
- In sheep, abnormalities of the wool
- In cattle, loss of hair coat color
- In calves, blood vessel problems
- In young animals, bone development issues
- Reproductive issues
- White muscle problems
- Performance issues
- Muscle stiffness
- Reduced immune response
- Enlarged thyroid gland; goiter swell
- Metabolic disorders; decrease in metabolic rate
- Hair loss
- Dry and scaly skin
- Lack of appetite
- Poor growth
- In sheep, decrease in wool production and growth
- In ruminants, vitamin B12 deficiency
