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1. A modified muscular pouch behind the stomach in the digestive tract of birds, having a thick lining and often containing ingested grit that aids in the breakdown of seeds before digestion.
2. A similar digestive organ found in certain invertebrates, such as the earthworm.
gizzarda portion of the anterior part of the alimentary canal where food materials are broken up prior to digestion. Usually the gizzard possesses strong muscular walls and in invertebrates has internal projections. In some birds, such as the curlew, the gizzard lining is regularly renewed and the old lining cast out in the form of a pellet.
the muscular stomach of the bird, separated from the more cranial proventriculus or glandular stomach by a constriction. Called also ventriculus.
gizzard stained by a dye used in feed wheat that makes it unsaleable as human food.
can cause heavy mortality in young turkey poults; the gizzard is impacted with fibrous material, thought due to eating litter.
occurs as part of a vitamin E-selenium nutritional deficiency.
Habronema incertum causes sudden death or chronic watery diarrhea in companion birds.