Egg shell quality is an important economic factor in both hatching eggs and table eggs. Some mycotoxins, like Ochratoxin A, can affect kidney function by impairing vitamin D3 production and consequently, calcium (Ca++) metabolism. This can lead to poorer egg shell quality, more breakage and reduced hatchability. Other mycotoxins can also affect the fertility and hatchability of hatching eggs.
Viral diseases like infectious bronchitis can also affect egg shell quality drastically.
Nutritional strategies like maintaining the correct calcium particle size and the balanced dietary calcium to phosphorus (Ca/AvP) ratio help promote good egg shell quality.