Incubation Problems due to Breeders’ Micro Mineral Deficiences

 

minerals

The problems of embryo mortality during incubation are not allways incubator
oriented.  The table below discusses when and how micro mineral deficiencies of the
breeder flock affect the survival possibilities of the chicken embryo in ovo.

 

Nutrient

 

Deficiency Signs

 

 

 

Manganese

 

Peak deaths prior to emergence. Chondrodystrophy, dwarfism, long bone shortening, head malformations, edema, and abnormal feathering are prominent.

 

 

Zinc

 

Deaths prior to emergence and the appearance of rumplessness, depletion of vertebral column, eyes underdeveloped, and missing limbs.

 

 

Copper

 

Deaths at early blood stage with no malformations

 

 

Iodine

 

Prolongation of hatching time, reduced thyroid size

and incomplete abdominal closure

 

 

Iron

 

Low hematocrit; low blood hemoglobin; poor extra-embryonic circulation in candled eggs.

 

 

Selenium

 

 

High incidence of dead embryos early in incubation

 

Source:Nutrient Requirements of Poultry: Ninth Revised Edition,1994

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