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Beyond the Bale : June 2013
the APVMA for registration and commercial use of SkinTraction®. The APVMA is taking their full legislated time line for its approval. Further development of the SkinTraction® technology is required but this is on hold until the APVMA can make its decision on the Residue Module. Liquid nitrogen process Three early scoping trials using a liquid nitrogen process to freeze breech and tail skin wrinkles on a total of 50 lambs has shown a proof of concept with evidence of both wrinkle reduction and an increase in bare area in the breech and tail with only minor welfare impacts on the animal. In a trial using 12 untreated and 36 treated animals, reductions in breech wrinkle scores and dag scores were achieved. The process requires considerable further development work on the application equipment and procedure to increase the speed and efficiency of the process so as to open the possibilities of using the liquid nitrogen process commercially at lamb marking. 27 seLLIng more WooL 27 on-farm a good example of the liquid nitrogen process outcome is lamb 412, shown here prior to application (top) and 5 months post application (below). June 2013 BeYoNd the BaLe aWI’s ‘Managing Breech Flystrike’ manual is designed to help woolgrowers further reduce their flock’s flystrike risk and develop more effective flystrike control plans. The manual can be used in conjunction with the FlyBoss website (www.flyboss.org.au). There are a wide range of management and breeding options currently in use. Different combinations of the available tools will suit producers in different enterprises and regions with varying risk of flystrike incidence. The preferred combination of tools and strategies needs to fit current risks, markets and other farm operations but it is also important that producers continually review their plan to ensure that it can be effective and fits in well with the future markets and seasonal variability. The manual includes coverage of management options, such as the strategic use of chemicals, shearing and crutching; breech modification; scouring and worm control; and breeding for breech strike resistance. More information: The AWI Managing Breech Flystrike manual is available at www.wool.com/flystrike or request a free hard copy version from the AWI Helpline on 1800 070 099. managing Breech flystrike manual Managing Breech Flystrike 2011-04 Flystrike Publication v8.indd 1 26/07/2011 10:56:55 A M Laser If wool could be permanently removed from the breech and side of the tail then the risk of breech and tail strike could be comparable to the very low risk immediately post crutching. This might allow more breech wrinkle to be present as moisture will dry more quickly and significantly reduce urine stains and dags, “the hard nuts to crack” in southern Australia. This will then lead to a reduced risk of breech strike throughout the year and could delay resistance to important prevention chemicals. Early scoping trials have not been successful to date, but the potential of this alternative warrants further investigation. The laser equipment used is similar in concept to that used for human hair removal with the application settings to be adapted to address wool growth patterns unique to Merino sheep. In theory, this will reduce or eliminate the need for retreatment. The sheep show minimal discomfort with the laser application.