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Reptiles and Amphibians Q&A 17 (view source)
Revision as of 13:02, 5 September 2011
, 13:02, 5 September 2011Created page with "[[|centre|500px]] <br /> '''These two adult Galapagos tortoises were fed a diet of mixed vegetables, with a preponderance of cabbage, for over one year. All the tortoises withi..."
[[|centre|500px]]
<br />
'''These two adult Galapagos tortoises were fed a diet of mixed vegetables, with a preponderance of cabbage, for over one year. All the tortoises within the collection who were fed the same diet display similar lesions.'''
<br />
<FlashCard questions="4">
|q1=What is your diagnosis?
|a1=
Hypothyroidism leading to the formation of fibrous goitres.
|l1=
|q2=What causes this condition?
|a2=
In this instance, the feeding of a diet consisting mostly of cabbage (which contains goitrogens) induces diminished function of the thyroid gland and its synthesis and secretion of thyroxin.
This is a condition common to herbivorous reptiles that have evolved in volcanic island habitats in which halogen- (iodine, chlorine, fluorine and bromine) sequestrating plants predominate over those that do not concentrate halogens in their tissues.
|l2=
|q3=What is the treatment for this disorder?
|a3=
Administer a source of iodine every five to seven days, eg, sodium- or potassium iodide solution (0.25–0.50mg/kg i/v or orally) or Lugol’s solution (0.5–2.0mg/kg orally).
|l3=
|q4=What measures can be taken to prevent it?
|a4=
Supplement the diet with kelp tablets; the dosage of this form of iodine is not critical because kelp is essentially non-toxic when used as a dietary supplement for giant tortoises.
Depending upon their iodine content, a 150–200kg tortoise could be given three to six tablets weekly.
|l4=
</FlashCard>
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[[Category:Reptiles and Amphibians Q&A]]
<br />
'''These two adult Galapagos tortoises were fed a diet of mixed vegetables, with a preponderance of cabbage, for over one year. All the tortoises within the collection who were fed the same diet display similar lesions.'''
<br />
<FlashCard questions="4">
|q1=What is your diagnosis?
|a1=
Hypothyroidism leading to the formation of fibrous goitres.
|l1=
|q2=What causes this condition?
|a2=
In this instance, the feeding of a diet consisting mostly of cabbage (which contains goitrogens) induces diminished function of the thyroid gland and its synthesis and secretion of thyroxin.
This is a condition common to herbivorous reptiles that have evolved in volcanic island habitats in which halogen- (iodine, chlorine, fluorine and bromine) sequestrating plants predominate over those that do not concentrate halogens in their tissues.
|l2=
|q3=What is the treatment for this disorder?
|a3=
Administer a source of iodine every five to seven days, eg, sodium- or potassium iodide solution (0.25–0.50mg/kg i/v or orally) or Lugol’s solution (0.5–2.0mg/kg orally).
|l3=
|q4=What measures can be taken to prevent it?
|a4=
Supplement the diet with kelp tablets; the dosage of this form of iodine is not critical because kelp is essentially non-toxic when used as a dietary supplement for giant tortoises.
Depending upon their iodine content, a 150–200kg tortoise could be given three to six tablets weekly.
|l4=
</FlashCard>
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[[Category:Reptiles and Amphibians Q&A]]