OMIA 001741-9031 : Edema (thigh patch) in Gallus gallus

Category: Homeostasis / metabolism phene

Links to MONDO diseases: No links.

Mendelian trait/disorder: no

Considered a defect: yes

Key variant known: no

Cross-species summary: Oedema

Species-specific symbol: ed-1; ed-2

History: This disorder was first described by Savage et al. (1986).

Inheritance: From pedigree matings, Savage et al. 1982 (Oregon Agr. Exp. Sta. Tech. Paper No. 7851) postulated two autosomal loci, each with a recessive allele, which they named ed-1 and ed-2.

Clinical features: Savage et al. (1986): "embryonic malformation consisting of a fluid filled sac or sacs usually situated dorsally and caudally of both thighs of unhatched chicks ... . ... The edematous condition has been detected in embryos as early as 12 days of incubation and edema is still evident in those chicks alive at hatching."


1986 Savage, T.F., McAlpen, W.W., Timmwood, K.I. :
Edema, a semi-lethal embryonic disorder in chickens Poultry Science 65(Suppl. 1):120 only, 1986.

Edit History

  • Created by Frank Nicholas on 24 Nov 2012
  • Changed by Imke Tammen2 on 31 Oct 2022