POUL 1010 Lecture Notes - Lecture 3: Iridescence, Uropygial Gland, Egg Incubation
26 Mar 2018
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This single autosomal dominant gene results in an absence or near absence of feather follicles on the neck and head and a reduction in the number of feather follicles in other regions of the body. Absence of feather follicles and feathers from many parts of the body. normal head, wing and leg feathering. It seems that 3 different genes in chickens are responsible for feather growth on the legs and feet. The degree of feathering and the location of feathers differ from breed to breed based on their particular genotype. Many genes are known in chickens that result in abnormal feather length or abnormal feather structure. A few of the more dramatic are described below: Il breeds- the best known is the onagadori. The saddle feathers grow about 1 foot per year and tail feathers grow about 3 feet per year. The longest recorded tail feather length in this breed was about 37 feet.
