Managing non mulesed sheep

Page last updated: Monday, 17 December 2018 - 1:42pm

Research publications

Smith, JE, Woodgate RG, Curnow, CA,  Michael, DL & Van Burgel, AJ,  An investigation into the efficacy of the Te Pari Patesco knife in providing a bare tip and the relationship between tail length and dag score in unmulesed Merino lambs - 2011

Smith, JE, Woodgate, RG, Curnow, CA & Michael, DL Influence of dag score and breech wrinkle score on the time take to crutch unmulesed Merino sheep - 2010

Sheep updates 2009 papers on mulesing:

  • Greeff, J & Karlsson, J, Breeding sheep for resistance to breech strike:-Selection results in WA, DAFWA, 2009 (see 'Documents' in side menu)
  • Woodgate, R,  Managing flystrike in unmulesed sheep, DAFWA, 2009
  • Bessier, B Dags, Scouring and worm control -, DAFWA , 2009 (see 'Documents' in side menu)

Chemical treatment at marking

Preliminary results from a small trial at Mount Barker Research Station indicated that applying a chemical treatment at marking may be beneficial in reducing breech strike incidences. Half of the flock of ewe and wether lambs were left untreated, while half received 4 millilitres (ml) Clik to breech and 4ml Clik to purse of ram lambs. Results are shown in the table below. Although there was a low incidence of flystrike, the results confirm that chemical treatment can aid in the prevention of flystrike in non mulesed sheep.

Table 1 Incidence of flystike in sheep treated with Clik against untreated sheep

Number of breech-struck sheep

Number of non-struck sheep

Clik +



Clik - 6 161

DPIRD ceased mulesing on its research stations in 2008 and since then has been collecting information regarding the management of non mulesed sheep. For past results please see the on-farm research summaries in the side menu. 

Contact information

Julia Smith
+61 (0)8 9892 8450