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protein losing enteropathy and limb oedema.            isospora.jpg (41299 bytes)   

               Isospora from a bearded dragon.

  pinwomsisospora.jpg (44407 bytes)

Pinworm eggs (large brown ovals)

with Isospora.  

Recommended treatments  for pinworm is Panacur liquid for 3 days at normal dose rates.

I have found the textbook treatments for coccidia to be of poor efficacy and have treated these problems most successfully with baycox at 7.5mg/kg daily for 2 consecutive days, repeating the treatment after 2 - 3 weeks. (S.Lloyd- personal communication).

Avermectins can be used in snakes and lizards but are HIGHLY TOXIC TO ALL CHELONIANS and must not be used in these species.

 

It is vital that the vivaria are thoroughly cleaned out; substrates and cage furniture should be discarded; it is notoriously difficult to destroy parasite eggs and spores. Newspaper should be used as a substrate until the infection is under control and faecal samples should be repeated every 3 months. These infections are so common in lizards that I tend to check faecal samples on all my r New Page 1

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GASTROINTSTINAL PROBLEMS.

 

 

PARASITISM

As well as the gastrointestinal problems caused by dietary errors, the most common cause of problems I have encountered is with internal parasites. This is a consequense of keeping these animals in a confined space in which it is ideal for parasite species to multiply in an exponential fashion.

They are a particular problem in insectivorous lizards and in wild caught snakes. Infected animals may simply present with ill thrift and lethargy but will often have loose or mucoid faeces, with blood in severe cases.

 

Diagnosis is made by microscopic examination of faecal samples. The most common findings are helminth parasites (usually pinworms) and coccidia (Isospora, Eimeria). Spores and eggs can usually be found in simple wet preparations without any need for concentration techniques. Animals may have multiple infestations.

beardiecocci.jpg (70553 bytes)

this bearded dragon presented with swollen

limbs; intestinal coccidiosis had caused a

 

PROLAPSES.

Cloacal/rectal prolapses are not uncommon in reptiles especially snakes. Like prolapses in other species they can be reduced and replaced if they have not been prolapsed for too long or severely traumatised. They may be a consequence of parasitism, constipation or of a subclinical MBD in lizards but sometimes seem to have no predisposing cause. After reduction, a steroid enema helps to reduce the swelling and irritation and helps to prevent recurrence; the vent can be closed with a mattress suture for several days- snakes usually only defaecate weekly.

I am treating one rat snake which has a monthly steroid enema; if we try to stop treatment or increase the intervals between treatments he starts to prolapse. He has been treated now for over 2 years.

 

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prolapse1.jpg (38252 bytes) prolapse3.jpg (29720 bytes)

prolapse reduced and mattress suture

temporarily closing the vent.

 

INTESTINAL OBSTRUCTION.

 

This is not uncommon- it may have a variety of causes from unsuitable substrates, subclinical MBD, intestinal parasites.  It is usually diagnosed by palpation of the abdomen in lizards and snakes and confirmed by radiography. Sometimes faecoliths (impacted dried out faeces) can be softened by administering fliuids and small doses of laxatives such as lactulose but foreign bodies and severe impactions require surgery.

 

 

                                            

 

 

    xrayfatmonitor.jpg (28066 bytes)

radiograph of monitor lizard with intestinal impaction. conservative measures failed to remove this faecolith which was eventually removed by surgery.

                  fatmonitorop1.jpg (51781 bytes)

                            intestine repaired after removal of obstruction

fatmonitorop2.jpg (58974 bytes)

 

faecolith after removal; keys give an idea of scale.

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