Anaemia in Lambs Caused by Mycoplasma ovis : Global and Australian Perspectives

(formerly ) is a haemotropic parasitic bacterium found within erythrocytes and distributed widely in global sheep and goat production regions. is transmitted by biting flies and by contaminated instruments, causing morbidity and mortalities from anaemia, usually within 6 weeks following blood-exposu...

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Bibliographic Details
Published in:Animals (Basel) 2022-05, Vol.12 (11), p.1372
Main Author: Windsor, Peter A
Format: Article
Language:English
Subjects:
Abattoirs
Anemia
Animal husbandry
Animals
Antibiotics
Antiinfectives and antibacterials
Arthropods
Asymptomatic
Blood sucking
Castration
Cattle
diagnosis
Disease
Disinfection
Ear
Eperythrozoon
Epidemiology
Erythrocytes
haemoparasites
Health risks
Hemolytic anemia
Hypodermic needles
Immune response
Infections
Jaundice
Lamb
Livestock farming
Malnutrition
management
Marking
Morbidity
Mycoplama ovis
Mycoplasma ovis
Mycoplasmosis
Pain
Parasites
Pathogenesis
Pathogens
Review
Risk
risk factors
Serology
Shearing
Sheep
Tagging
Toxicity
Vaccination
Vectors (Biology)
Viral infections
Vitamin B12
Vitamin deficiency
Wound healing
Zoonoses
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Description
Summary:(formerly ) is a haemotropic parasitic bacterium found within erythrocytes and distributed widely in global sheep and goat production regions. is transmitted by biting flies and by contaminated instruments, causing morbidity and mortalities from anaemia, usually within 6 weeks following blood-exposure procedures, particularly vaccination, castration, ear tagging, mulesing, and occasionally crutching and shearing. Affected animals develop haemolytic anaemia and may have jaundice, causing abattoir condemnations. The typical history, clinical and pathological findings, display of in blood smears and/or by PCR is diagnostic, although immune responses deplete from smears; hence, in-contact healthy animals should be examined. Differential diagnoses include haemonchosis, fasciolosis, malnutrition (copper or vitamin B12 deficiency), and plant toxicities. parasitaemia may persist, with recrudescence following stressful events, although most older sheep remain immune. Human infections have been reported. Inadequate socioeconomic data present difficulties in assessing the impact of on production and as antimicrobial therapy is ineffective, its control requires management practices that minimize the impact of invasive procedures in periods when risks of transmission are more likely. Although considered an emerging pathogen, recent improvements in welfare attitudes and husbandry practices on Australian sheep farms may potentially limit the transmission of
ISSN:2076-2615
2076-2615
DOI:10.3390/ani12111372