Difference between revisions of "Skin Nutritional - Pathology"
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| + | |linkpage =Integumentary System - Pathology | ||
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| + | |maplink = Integumentary System (Content Map) - Pathology | ||
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| − | + | ===General=== | |
| + | *Often combined deficiency which improves when animal is fed a balnced diet | ||
| + | *Sometimes caused by change in demand (pregnancy, growth, cold weather) or due to disease | ||
| + | |||
| + | ===Zinc deficiency=== | ||
| + | *Mainly in dogs and pigs, sometimes ruminants | ||
| + | *'''In pigs''': | ||
| + | **Grossly:circumscribed reddened papules and plaques, thick crusting and scaling, fissures along ventral abdomen and medial thighs, sometimes generalised | ||
| + | **Microscopically: parakeratosis, acantosis, pseudoepitheliomatous hyperplasia, hypergranulosis | ||
| + | **Commonly secondary bacterial dermatitis | ||
| + | *'''In dogs''': | ||
| + | **Siberian huskies and Alaskan malamutes: | ||
| + | ***Grossly: scales and crusts around mouthm chin, eyes, joints, prepuse, scrotum, vulva | ||
| + | ***Microscopically: diffuse hyperkeratosis extending to follicles, superficial perivascular dermatitis with eosinophils | ||
| + | **Rapidly growing puppies: | ||
| + | ***Grossly: scaly plaques on skin, nasal planum and foot pads | ||
| + | *'''In ruminants''': | ||
| + | **Grossly: alopecia, crusts and scales on face, neck and distal extremities and mucocutaneous junctions | ||
| + | **Microscopically: parakeratosis, sometimes hyperkeratosis | ||
| + | |||
| + | |||
| + | ===Copper deficiency=== | ||
| + | *Hair or wool depigmentation | ||
| + | **Black sheep develop bands of lighter colouring | ||
| + | **Cattle develop spectacle pattern of depigmentation around eyes) | ||
| + | **Coat colour may change from black to reddish brown | ||
| + | |||
| + | ===Vitamin A deficiency=== | ||
| + | *In dogs | ||
| + | *Grossly: generalised scaling | ||
| + | *Microscopically: marked follicular hyperkeratosis | ||
| + | |||
| + | ===Vitamin E deficiency=== | ||
| + | *Steatitis may develop in cats fed excess fatty acids or with vitamin E deficincy | ||
| + | *Grossly: firm, yellow or orange nodules in subcutaneous tissue | ||
| + | *Microscopically: nodular to diffuse granulomatous panniculitis, macrophages and giant cells, oedema, fat necrosis, [[Neutrophils - WikiBlood|neutrophils]] and ceroid pigment | ||
Revision as of 20:56, 24 February 2010
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General
- Often combined deficiency which improves when animal is fed a balnced diet
- Sometimes caused by change in demand (pregnancy, growth, cold weather) or due to disease
Zinc deficiency
- Mainly in dogs and pigs, sometimes ruminants
- In pigs:
- Grossly:circumscribed reddened papules and plaques, thick crusting and scaling, fissures along ventral abdomen and medial thighs, sometimes generalised
- Microscopically: parakeratosis, acantosis, pseudoepitheliomatous hyperplasia, hypergranulosis
- Commonly secondary bacterial dermatitis
- In dogs:
- Siberian huskies and Alaskan malamutes:
- Grossly: scales and crusts around mouthm chin, eyes, joints, prepuse, scrotum, vulva
- Microscopically: diffuse hyperkeratosis extending to follicles, superficial perivascular dermatitis with eosinophils
- Rapidly growing puppies:
- Grossly: scaly plaques on skin, nasal planum and foot pads
- Siberian huskies and Alaskan malamutes:
- In ruminants:
- Grossly: alopecia, crusts and scales on face, neck and distal extremities and mucocutaneous junctions
- Microscopically: parakeratosis, sometimes hyperkeratosis
Copper deficiency
- Hair or wool depigmentation
- Black sheep develop bands of lighter colouring
- Cattle develop spectacle pattern of depigmentation around eyes)
- Coat colour may change from black to reddish brown
Vitamin A deficiency
- In dogs
- Grossly: generalised scaling
- Microscopically: marked follicular hyperkeratosis
Vitamin E deficiency
- Steatitis may develop in cats fed excess fatty acids or with vitamin E deficincy
- Grossly: firm, yellow or orange nodules in subcutaneous tissue
- Microscopically: nodular to diffuse granulomatous panniculitis, macrophages and giant cells, oedema, fat necrosis, neutrophils and ceroid pigment