FEATHER LOSS IN POULTRY

The absence of feathers on birds can result from any of several causes and can be separated into two groups: 1) those birds that cannot grow feathers and 2) those birds that pull or break them off. Correcting the problem’s cause can reverse either situation.

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The most common reason that feathers do not develop is a deficiency of a critical protein constituent (amino acid) from the diet of the birds. The feathers of birds contain high levels of a subunit of proteins called “methionine.” Methionine is one of only a few amino acids that contain sulfur, and sulfur is a major constituent of feathers. If bird diets are deficient in any single amino acid, it will most likely be methionine. An adequate level of methionine is required in the diet and a deficiency results in reduced growth and feather development. A methionine deficient bird will tend to eat feathers in an attempt to satisfy a craving for this amino acid. A bird may even pull them from its own body.

 

Few ingredients used in making poultry diets contain adequate amounts of methionine, so manufactured methionine must be added to the dietary mixture to ensure that the birds receive an adequate amount. All quality poultry feeds are designed to contain adequate methionine and prevent reduced body growth and feather development. However, if additional grains (such as corn) are fed with the complete feed, then the amount of methionine consumed by the bird can be inadequate for providing growth and feather development. Feeding of additional grains with complete poultry feeds is not recommended.

 

If feathers are developed, but are pulled or broken off, the cause is usually management related. Birds that frequently mate may have an absence of feathers, especially on the backs and heads of hens. The males may also have feathers missing from the breast area. These feathers will grow back after the breeding season is completed.

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For enquiries and details, call World Farmers Centre Admin on 08035219966 or WhatsApp us @+2348173030321.

 

If feathers are missing from the abdominal and vent area, the cause is most likely the presence of external parasites such as the northern fowl mite or poultry lice. Infestations of these pests can be controlled by regular sprayings of an approved pesticide like permethrin to the birds. The house and other structures that the birds frequently visit should also be sprayed. This will ensure the elimination of any pests that can reinfest the birds. Several applications at 2 to 3 week intervals will kill pests that hatch from eggs that have been deposited prior to the initial spraying.

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