sarabande
Well-known member
Dipping is no longer carried out on a routine annual basis, but only when there are specific veterinary reasons as in a plague of ticks or other ectoparasites.
The regulations for protection of people engaged in dipping and for disposal of the used and remaining dips are massively changed from even 40 years ago, when it was routine to use arsenic based chemicals and to allow the dip tanks to drain away over the fields. Gone too is the habit of chucking the sheepdogs into the tank at the end of the day, and the addition of 'bloom' chemicals to make the fleeces shine when presented for sale after shearing.
It is more than 30 years since I dipped my sheep. Treatment for parasites is nowadays carried out by a small hand spray applied in a "T" shape over the back and stern of the sheep. Even then the PPE requirements are substantial, and some shearers will refuse to deal with sheep that have been sprayed with e.g. Clik or similar products. These are now so clever that some will work for up to 16 weeks after application, which takes one through the fly and tick season.
As an observation about ticks on open moorland.... The reduction in 'swaling' (deliberate, controlled burning in early summer / late spring) which used to clean the moors of parasites and allow fresh vegetation to grow as aftermath, has meant that gorse and heather grows taller and tougher and provides more shelter for parasites. It is an instructive exercise to drag an old white blanket across the moorland and see how many ticks and keds jump up and bite the blanket; movement and vibration alerts the insects and readies them to leap up at the target, be it a blanket, a sheep, or a walker.
The regulations for protection of people engaged in dipping and for disposal of the used and remaining dips are massively changed from even 40 years ago, when it was routine to use arsenic based chemicals and to allow the dip tanks to drain away over the fields. Gone too is the habit of chucking the sheepdogs into the tank at the end of the day, and the addition of 'bloom' chemicals to make the fleeces shine when presented for sale after shearing.
It is more than 30 years since I dipped my sheep. Treatment for parasites is nowadays carried out by a small hand spray applied in a "T" shape over the back and stern of the sheep. Even then the PPE requirements are substantial, and some shearers will refuse to deal with sheep that have been sprayed with e.g. Clik or similar products. These are now so clever that some will work for up to 16 weeks after application, which takes one through the fly and tick season.
As an observation about ticks on open moorland.... The reduction in 'swaling' (deliberate, controlled burning in early summer / late spring) which used to clean the moors of parasites and allow fresh vegetation to grow as aftermath, has meant that gorse and heather grows taller and tougher and provides more shelter for parasites. It is an instructive exercise to drag an old white blanket across the moorland and see how many ticks and keds jump up and bite the blanket; movement and vibration alerts the insects and readies them to leap up at the target, be it a blanket, a sheep, or a walker.
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