ANN 111: Principles of Animal Nutrition and Feed Technology (2+1)

DEFICIENCY GENERAL SYMPTOMS

• Subnormal growth, depressed appetite, poor feed conversion and leads to reproductive disorders in farm animals.
• Gross signs of zinc deficiency in chicks are
  • retarded growth,
  • foot abnormalities,
  • 'frizzled' feathers,
  • bone abnormality referred to as the 'swollen hock syndrome' in poultry.
• Symptoms of zinc deficiency in calves include inflammation of the nose and mouth, stiffness of the joints, swollen feet and parakeratosis.