OMIA 001730-9031 : Stringy in Gallus gallus

Mendelian trait/disorder: yes

Mode of inheritance: Autosomal Recessive

Considered a defect: yes

Key variant known: no

Species-specific description: "The primary and secondary wing and tail feathers of " stringy " birds are generally shorter than those of normal birds, the barbs do not spread out to form a normal web, and barbules are usually absent. The body feathers exhibit a ragged appearance. The toe nails and the premaxilla of the beak are unusually long. The upper and lower beaks are frequently crossed. Chicks homozygous for the abnormal feather condition have " sticky " (not fluffy) down, which is neatly parted on the. mid-dorsal line. "" Stringy " adult [male] birds are less vigourous than normal [male][male] and the volume of semen they produce is small (usually less than 0. 2 cm. 3). The egg production of " stringy " [female][female] is equal to that of normal birds of the same stock." (Buss et al., 1950)

Inheritance: Buss et al. (1950) reported autosomal recessive inheritance.


Note: the references are listed in reverse chronological order (from the most recent year to the earliest year), and alphabetically by first author within a year.
1950 Buss, E.G., Bohren, B.B., Warren, D.C. :
The inheritance of "stringy," an abnormal feather condition in white Leghorn chickens. J Hered 41:143-4, 1950. Pubmed reference: 14778993.
1949 Buss, E.G., Bohren, B.B. :
The inheritance of an abnormal feather condition (stringy) in White Leghorn chickens Poultry Science 28:760 only, 1949.

Edit History

  • Created by Frank Nicholas on 30 Oct 2012
  • Created by Frank Nicholas on 09 Nov 2012