Metabolic Bone Disease
Nutritional secondary hyperparathyroidism
Znana też jako: Nutritional Secondary Hyperparathyroidism, NSHP, Fibrous Osteodystrophy, Osteomalacia, Rickets
W skrócie
Metabolic Bone Disease (MBD), or nutritional secondary hyperparathyroidism, is a common and serious condition in captive reptiles and turtles. Caused by a lack of dietary calcium, improper calcium-to-phosphorus ratios, or insufficient UVB light, it leads to weak, deformed bones and muscle tremors. Learn how to recognize the signs, how veterinarians diagnose and treat it, and how proper husbandry can prevent this debilitating disease.
TL;DR. Zapobiegalne schorzenie gadów i żółwi z niedoboru wapnia lub UVB: miękkie kości, deformacje i drżenia.
Światło UVB jest kluczowe do syntezy witaminy D3 i wchłaniania wapnia.
Co to jest?
Metabolic bone disease in captive reptiles/turtles is usually nutritional secondary hyperparathyroidism: insufficient calcium or UVB leads to soft bones, fibrous reinforcement of limbs/jaws, and muscle tremors.
Przyczyny i czynniki ryzyka
Husbandry errors: inadequate UVB (290-315 nm), low dietary calcium, poor Ca:P ratio (aim near 2:1), cold enclosures. Fast-growing species are highest risk.
Objawy
- Rubber jaw; soft/warped shell in chelonians (cardinal)
- Swollen firm limbs, pathological fractures, lethargy, anorexia, tremors (common)
- Paresis/paralysis from spinal deformity (occasional)
Skrócona żuchwa i spuchnięte kończyny to klasyczne zaawansowane objawy.
Jak diagnozują weterynarze
Husbandry review. Radiographs (gold): demineralized ghost bones, hidden fractures. Ionized calcium; biochemistry for kidney and phosphorus.
RTG pokazuje odwapnione kości i ukryte złamania.
Leczenie
Oral or injectable calcium salts; phosphate binders if phosphorus high; cautious calcitriol after calcium stabilizes. Fix UVB, heat gradient, diet.
Rokowanie
Excellent if early before severe deformity. Permanent shape changes may remain. Poor with paralysis or severe kidney disease.
Zapobieganie
Linear UVB (replace every 6-12 months), calcium (± D3 indoors), gut-load insects, Ca-rich greens, correct thermal gradient.
Kiedy dzwonić do weterynarza
Emergency: continuous tremors/seizures, inability to lift body, soft jaw/shell, visible fractures, extreme lethargy or prolonged anorexia.
Źródła
- Mader's Reptile and Amphibian Medicine and Surgery, 3rd Edition, pages 315-321, 811-814.
- BSAVA Manual of Reptiles, 3rd Edition, pages 102-105, 210-212.
My highlights & notes
Objawy i znaki
Jak się diagnozuje
- RadiographyZłoty standard
- Plasma Biochemistry Panel
- Plasma Ionized Calcium
Podejścia do leczenia
Leczenie musi przepisać weterynarz. Konkretne dawki celowo nie są pokazywane.
Częste pytania
What is Metabolic Bone Disease?
Metabolic Bone Disease (MBD), or nutritional secondary hyperparathyroidism, is a common and serious condition in captive reptiles and turtles. Caused by a lack of dietary calcium, improper calcium-to-phosphorus ratios, or insufficient UVB light, it leads to weak, deformed bones and muscle tremors. Learn how to recognize the signs, how veterinarians diagnose and treat it, and how proper husbandry can prevent this debilitating disease.
What are the symptoms of Metabolic Bone Disease?
Soft, deformed carapace or plastron、Soft, pliable mandible or maxilla (rubber jaw)、Loss of appetite、Lethargy and weakness、Muscle tremors or twitching、Pathological fractures、Swollen, firm limbs、Paresis or paralysis
How is Metabolic Bone Disease diagnosed?
Radiography、Plasma Biochemistry Panel、Plasma Ionized Calcium
How is Metabolic Bone Disease treated?
Leczenie musi przepisać weterynarz. Konkretne dawki celowo nie są pokazywane.
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