Tasmanian Biosecurity Advisories
Department of Primary Industries, Parks, Water and Environment
Subscribing to get DPIPWE’s Biosecurity Advisories is the best way you can keep yourself up-to-date and fully informed about Tasmanian biosecurity issues. Our Advisories cover topics such as changes or proposed changes to Tasmania’s import regulations, animal health and welfare, plant health, forthcoming regulation reviews and opportunities for public comment, new or emerging pest/disease risks and a range of other matters related to Tasmania’s biosecurity.
Biosecurity Tasmania urges owners of sheep to be vigilant for any signs in their flock of cold stress brought about by forecast cold conditions and heavy rains. Sheep recently shorn and new lambs could be suffering due to the weather conditions and all reasonable precautions should be taken to minimise the effects of cold stress.
Sheep have a natural insulation to extreme weather with their fleece. In cold, wet and windy conditions, sheep shiver, huddle together in the mob and seek shelter behind windbreaks to produce and conserve heat. However, these mechanisms have limits. If weather stress is excessive or prolonged, the sheep's capacity to maintain a stable body temperature may be exceeded and cold stress will result. Hypothermia most commonly occurs in freshly shorn, light condition sheep during wet and windy conditions at any time of the year
Hypothermia literally means 'temperature below normal', occurs when too much body heat is lost or too little body heat is produced, and the result is a drop in body temperature. If weather stress is excessive or prolonged, a sheep's capacity to maintain a stable body temperature may be exceeded, and heat or cold stress will result.
High rainfall and high winds combined with temperatures below normal will cause mortalities in young animals, especially newly shorn sheep without shelter. The impact of the cold weather will depend on its duration, rainfall, wind speed and temperature—the 'wind chill' factor can double heat loss.
Sheep suffering from hypothermia often die as a result of their own behaviour and their attempts to cope. Sheep move in the direction of the wind until they are stopped by a barrier such as a fence, gully or creek. At this point they may pile on top of each other leading to suffocation or drowning. Sheep may be reluctant or unable to move when wet and cold.
Initially sheep will try to maintain their body temperature by:
If dealing with a small flock, consider applying garbage bags as coats for the sheep. Trials have shown that properly fitted plastic bags can decrease the loss of body heat even in severely hypothermic sheep.
Be prepared to relocate animals to a shed or land on higher ground, or move stock to paddocks with adequate windbreaks with tree or bush shelter in the event of very heavy rainfall or likely flooding.
Prioritise your animals, giving shelter to the most vulnerable such as the ewes and lambs and those newly shorn.
The Bureau of Meteorology have issued a flood watch for low lying / flood susceptible areas on Tasmania's east coast, advising graziers that they should prepare to move stock in expectation of heavy rainfall. Visit the BOM website for more information: http://www.bom.gov.au/jsp/watl/rainfall/pme.jsp
More information on caring for your sheep during cold weather can be found on the DPIPWE/Biosecurity Tasmania website: http://dpipwe.tas.gov.au/biosecurity-tasmania/animal-biosecurity/animal-welfare/hobby-farmers-and-smallholders/caring-for-sheep-in-cold-weather
(9/5/2018)Categories: Cropping; Horticulture; Invasive Species; Livestock; Natural environment; Pasture; Policy and Legislation; Wildlife;
A major effort is being undertaken to eradicate fruit fly from Tasmania.
(4/5/2018)Categories: Cropping; Freshwater pests; Gene technology; Horticulture; Invasive Species; Livestock; Marine pests; Natural environment; Pasture; Policy and Legislation; Seeds; Timber imports; Wildlife;
Citrus canker (Xanthomonas citri susbp citri) has recently been detected in the Northern Territory. Citrus canker is a serious disease of citrus and can have severe impacts on fruit quality and yield. Citrus canker is not harmful to people or animals.
Biosecurity Tasmania has declared citrus canker to be a List A disease under the Plant Quarantine Act 1997 and has re-instated the Import Requirement on the import of Citrus plants and plant products (including leaf material and fruit) as well as agricultural equipment and machinery that may have been in contact with the disease.
Find the re-instated Import Requirement 31 on the Biosecurity Tasmania website at: www.dpipwe.tas.gov.au/biosecurity-tasmania/plant-biosecurity/plant-import-restrictions
Citrus canker has been detected in Australia previously and been successfully eradicated.
For more information on citrus canker, signs and symptoms, visit the NSW Department of Primary Industries website at: www.dpi.nsw.gov.au/biosecurity/plant/insect-pests-and-plant-diseases/citrus-canker
Furher information can also be obtained at the Outbreak website: www.outbreak.gov.au/current-responses-to-outbreaks/citrus-canker
If you think you have seen symptoms that look like citrus canker, call the Plant Pest Hotline on 1800 084 881
(3/5/2018)Categories: Cropping; Gene technology; Horticulture; Natural environment; Pasture; Policy and Legislation; Seeds;
Biosecurity Tasmania wish to advise that existing Import Requirement 2 in relation to fruit fly host product entering Tasmania has been modified to ensure risk produce is fumigated at a higher temperature.This is being implemented as a precautionary measure in a bid to further mitigate risk under current unusual Queensland fruit fly pressure.This requirement along with others related to fruit fly risk mitigation will continue to be reviewed as per routine practice to ensure requirements are appropriate to the risk.The revised Import Requirement 2 - Fruit Fly Host Produce - Disinfestation with Methyl Bromide is effective as of 2 March 2018Details can be found at http://dpipwe.tas.gov.au/biosecurity-tasmania/plant-biosecurity/plant-import-restrictions
(9/3/2018)Categories: Cropping; Horticulture; Policy and Legislation; Seeds;
Fruit Fly Update 22 Feb 2018A suspension on produce imported from a Melbourne-based fruit and vegetable treatment facility will remain in place until Biosecurity Tasmania is satisfied that any identified concerns are addressed.Biosecurity Tasmania staff are working with their Victorian counterparts to investigate the process undertaken at the treatment facility.The facility is one of three major Melbourne-based facilities accredited for fruit fly treatment prior to export to Tasmanian markets.No concerns have been identified for produce coming through the other two facilities and this will continue to be available in supermarkets.Inspection is a routine part of Biosecurity Tasmania measures and surveillance of all fruit fly host produce has been increased during the current investigation.Imports from the supplier of the identified produce also have been suspended until fruit fly freedom can again be demonstrated or that produce has been appropriately treated for fruit fly.The Department of Primary Industries, Parks, Water and Environment is continuing discussions with its Federal counterparts as well as other States to identify any further actions that may be required.The Tasmanian community, including retailers, has been praised for its quick response to the suspension and recall of host produce.Reports of fruit fly can be made by contacting Biosecurity Tasmania on 6165 3774.
Further information about fruit fly can be found on the DPIPWE website dpipwe.tas.gov.au/fruitfly
(23/2/2018)Categories: Cropping; Horticulture; Invasive Species; Policy and Legislation;