East Offaly Badger Removal Project
Area Project Buffer Control
Objectives Removal of as many badgers as possible. Monitor the effect of this removal on TB levels in cattle. Compare results with a control area & national figures.
Preliminary Studies in E. Offaly YearNo. of badgersTB pos. badgers (20.0%) (17.7%) (27.3%) (9.7%) (6.5%) Total35753 (14.8%)
Previous badger Removals. Ballycrissane, Co Galway, sq km area 54 badgers captured 15 (29%) gross TB lesions
Sett Survey Main Setts 234 Other Setts % of main setts in hedgerow 62% of other setts in hedgerow
Snaring Periods DateActive SettsBadgersBadgers/sett 89 Jan-May Sept-Dec 456 (70) 141 (22) Feb-June Sept-Dec 234 (36) 108 (17) Feb-Apr May-Jun Sept-Nov Dec 57 (9) 35 (5) 16 (2)
Badgers captured & TB pos YearProjectBufferTotal 1989 TB (12) (17) (13) 1990 TB (12) (3) (9) 1991 TB (11) 74 8 (11) (11) 1992 TB (6) 72 2 (3) (5) 1993 TB (13) 51 2 (4) (9) 1994 TB (6) 64 3 (4) (5) Total TB (11) (8) (10.5
Reactors Project Area YearNo. Animal testsNo. ReactorsA P T , , , , , , , ,
Reactors Control area YearNo. TestsNo.ReactorsA P T , , , , , , , ,
National Figures YearCattleTestsReactorsA P T , , , , , , , ,1803.2
Case control study Eves (2001) A case control study on the incidence of bovine TB in an area of extensive badger culling in Co Offaly, Ireland. M V M. thesis NUI. 107 herds in the Project area. This was the total herds in the area with a confirmed TB outbreak in the years 1986,87 & similar herds from the rest of Co Offaly in which intensive badger removal did not take place were selected at random.
Case control study (contd) Herd size Enterprise type Cows per herd Total reactors Reactor cows Reactor non-cows Positive contiguous herds Number of failed tests
Total Reactors ( ) 74 reactors in 30 of the Project Area herds. ( range ) 287 reactors in 57 of the Control Area herds. ( range 1- 34) Difference statistically significant (P < 0.05)
Reactor non-cows 36 reactor non-cows in Project Area. 209 reactor non-cows in Control Area Difference significantly different (P<0.05)
Positive Contiguous Herds Project Area; 0.97 per herd Control Area; 1.91 per herd Difference statistically significant (P<0.01)
Number of failed tests Project Area; 1.26 Control Area; 2.03 Difference statistically significant (P< 0.01)