An outbreak of primary photosensitisation in lambs secondary to consumption of Biserrula pelecinus (biserrula)

Allan Kessell, Georgia Ladmore, Jane Quinn

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

An outbreak of photosensitisation affecting approximately 25% of a flock of 120 meat lambs that was grazing a monoculture of the pasture legume Biserrula pelecinus var. Casbah (biserrula) was investigated. Blood samples were taken from sheep with moderate to severe clinical signs, and from apparently normal animals, for a complete blood count and biochemistry; 5 affected animals were subjected to a full necropsy. Histopathological investigation showed lesions consistent with photosensitisation of the exposed unpigmented skin of the face and ears. No histopathological or clinical pathological abnormalities suggestive of a hepatopathy were detected in any of the cases, indicating that the lesions observed in this flock were caused by a primary photosensitising agent present in B. pelecinus. Conclusion: This is the first confirmation that photosensitisation caused by ingestion of biserrula is caused by a primary photosensitising agent.
Original languageEnglish
Pages (from-to)174-178
Number of pages5
JournalAustralian Veterinary Journal
Volume93
Issue number5
DOIs
Publication statusPublished - May 2015

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Photosensitivity Disorders
lesions (animal)
Disease Outbreaks
flocks
lambs
Photosensitizing Agents
lamb meat
forage legumes
blood
skin (animal)
biochemistry
ears
necropsy
animals
Blood Cell Count
ingestion
grazing
sheep
Fabaceae
Biochemistry

Cite this

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abstract = "An outbreak of photosensitisation affecting approximately 25{\%} of a flock of 120 meat lambs that was grazing a monoculture of the pasture legume Biserrula pelecinus var. Casbah (biserrula) was investigated. Blood samples were taken from sheep with moderate to severe clinical signs, and from apparently normal animals, for a complete blood count and biochemistry; 5 affected animals were subjected to a full necropsy. Histopathological investigation showed lesions consistent with photosensitisation of the exposed unpigmented skin of the face and ears. No histopathological or clinical pathological abnormalities suggestive of a hepatopathy were detected in any of the cases, indicating that the lesions observed in this flock were caused by a primary photosensitising agent present in B. pelecinus. Conclusion: This is the first confirmation that photosensitisation caused by ingestion of biserrula is caused by a primary photosensitising agent.",
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An outbreak of primary photosensitisation in lambs secondary to consumption of Biserrula pelecinus (biserrula). / Kessell, Allan; Ladmore, Georgia; Quinn, Jane.

In: Australian Veterinary Journal, Vol. 93, No. 5, 05.2015, p. 174-178.

Research output: Contribution to journalArticle

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T1 - An outbreak of primary photosensitisation in lambs secondary to consumption of Biserrula pelecinus (biserrula)

AU - Kessell, Allan

AU - Ladmore, Georgia

AU - Quinn, Jane

N1 - Includes bibliographical references.

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AB - An outbreak of photosensitisation affecting approximately 25% of a flock of 120 meat lambs that was grazing a monoculture of the pasture legume Biserrula pelecinus var. Casbah (biserrula) was investigated. Blood samples were taken from sheep with moderate to severe clinical signs, and from apparently normal animals, for a complete blood count and biochemistry; 5 affected animals were subjected to a full necropsy. Histopathological investigation showed lesions consistent with photosensitisation of the exposed unpigmented skin of the face and ears. No histopathological or clinical pathological abnormalities suggestive of a hepatopathy were detected in any of the cases, indicating that the lesions observed in this flock were caused by a primary photosensitising agent present in B. pelecinus. Conclusion: This is the first confirmation that photosensitisation caused by ingestion of biserrula is caused by a primary photosensitising agent.

KW - Biserrula pelecinus

KW - Dermatitis

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