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Katherine rural review



Katherine rural review


Northern Territory. Department of Primary Industry and Resources


Katherine rural review; E-Journals; PublicationNT; Katherine rural review






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Agriculture; Northern Territory; Katherine; Periodicals; Animal industry; Rural industries; Periodicals

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Northern Territory Government

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Katherine rural review


Edition 332

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application/pdf; application/msword




Attribution International 4.0 (CC BY 4.0)

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Northern Territory Government



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DEPARTMENT OF PRIMARY INDUSTRY AND RESOURCES Page 11 of 18 Katherine Rural Review Report into an investigation of a suspected case of psittacosis in a cockatiel at a roadhouse in Central Australia A notification was received from a member of the public with wildlife expertise who had visited a roadhouse in Central Australia in late March 2017, advising that three cockatiels in an aviary cage of 25 were exhibiting clinical signs consistent with psittacosis a significant zoonoses. A photograph of the most severely affected bird was provided, showing the bird fluffed up and depressed, with stained plumage and one eye swollen and partially closed, indicating conjunctivitis and possible sinusitis. At a follow-up visit by the regional veterinary officer, the most severely affected bird was euthanised for necropsy. Gross necropsy revealed caseous conjunctivitis involving both eyes. Histopathology showed a marked squamous metaplasia of lacrimal duct and nasal mucosae, with massive intraluminal accumulation of keratin. There were no notable gross or histological findings in other tissues. Polymerase chain reaction (PCR) testing of pooled cloacal, tracheal and ocular swabs from the euthanased and the two other affected birds excluded influenza type A, Newcastle Disease Virus and Chlamydiacae bacteria. A diagnosis of hypovitaminosis A was made, and the owner was given advice to change the birds diet. No further losses have been reported. BHV5 can cause sudden death in young cattle In the June 2017 Animal Health News we reported on a case of BHV5 which happened on a property outside Katherine in early May 2017. BHV5 is a virus that causes inflammation (swelling) of the brain in cattle. It was first discovered in Queensland in 1962, and is thought to be present worldwide. BHV5 is closely related to bovine herpesvirus 1 (BHV1), the virus which causes infectious bovine rhinotracheitis (IBR) and infectious pustular vulvovaginitis. Infection with BHV5 should be considered in cases of neurological disease or sudden death in young cattle in Northern Australia. BHV5 is spread through the nasal fluid of infected cattle. When cattle come into contact with this infected fluid via the mouth or nose they become infected and the virus spreads to the brain. In the brain, the virus can lay dormant (not having any affect), or it can cause swelling which can cause neurological signs such as: depression tremors teeth grinding, mouth chomping and salivation circling laying down There is no treatment for BHV5 and severe cases can result in death. In cattle where the virus is lying dormant, it can reactivate and begin to cause signs if the animal becomes stressed such as after weaning, Figure 3 cockatiel with hypovitaminosis A

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