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Interpreting a drench label - Answers
- Write down the names of four different internal parasites that Hit'Em is effective against.
Hit'Em is effective against the following parasites: small brown stomach worm, black scour worm, thin-necked intestinal worm, large bowel worm, large mouthed bowel worm and large lungworm.
- Can this drench be used for controlling internal parasites in cattle?
No, this drench cannot be used for controlling internal parasites in cattle.
- Is this drench a BZ or non BZ drench?
Hit'Em is a BZ drench.
- A mob of lambs are brought into the
yards to be drenched. Using the information on the Hit'Em label, your job is to determine what dosage of drench the lambs
are to be given. Below are the weights of the lambs in kilograms.
22, 27, 30, 24, 26, 25, 23, 29, 28, 30, 25, 23, 29, 29, 21, 23, 23, 29, 26, 29, 22, 21, 23, 28, 21.
Each of the lambs that have been brought into the yards should be given 6 mL.
- A mob of ewes are brought into the
yards to be drenched. Using the information on the Hit'Em label, your job is to determine what dosage of drench the ewes
are to be given. Below are the weights of the ewes in
kilograms.
55, 57, 54, 52, 59, 54, 60, 60, 55, 53, 57, 58, 51, 56, 56, 58, 59, 60, 52, 57, 56, 54, 56, 54, 52.
Each of the ewes that have been brought into the yards should be given 12 mL.
- For a prime lamb enterprise, the time of sale may influence time of drenching. Explain why?
Hit'Em has a withholding period of 28 days. This means that lambs destined for slaughter should not be drenched 28 days or less prior to sale for the meat market.
- The Hit'Em label states that the drench should be dosed
according to the heaviest animal in the mob and that underdosing
is not recommended. Using the information provided, explain why
underdosing is not recommended.
Underdosing is not recommended because it exposes worms to a sublethal dose of drench. This means that the amount of drench is not enough to kill a large number of worms. This results in the worms building up resistance to the drench.
- The label of Hit'Em gives clear instructions about how empty containers
should be disposed of. Explain why you think that it is important
for users of Hit'Em to dispose of the container
appropriately and safely.
Hit'Em is a chemical that has the potential to kill some organisms. By not disposing of the Hit'Em container correctly, some of the drench may leak into the soil, rivers, dams and other waterways. This may result in harm being done to some other organisms or it may contribute to the build up of resistance by providing sublethal doses to the sheep in their water.
- If a farmer was aiming to follow the Wormkill programme, would Hit'Em be a suitable drench to be used?
Yes, Hit'Em is a suitable drench to be used by a farmer following Wormkill. Hit'Em is a broad-spectrum drench.
- For a farmer following Wormkill, would another drench be required to be used as
well as Hit'Em? Explain your answer.
For a farmer following Wormkill another drench as well as Hit'Em would be required. This is because Hit'Em is a broad-spectrum drench that is effective against the parasites listed in answer 1. A narrow spectrum drench such as Seponver is required to control barber's pole worm. If liver fluke is also a problem, then a drench such as Fasinex would also be required.
- Should Hit'Em be used continually on the same property? Explain your answer.
Hit'Em should not be used continually on the same property. All drenches should be changed annually. This reduces the chances of resistance building up to a particular drench.
- Why do you think the label states 'Store in original container, tightly closed in a safe place'?
These instructions, 'store in original container, tightly closed in a safe place', are aimed at protecting people, in particular children. If any chemical is removed from its original container and placed into another container, it may not be correctly labelled and may therefore may be mistaken for another substance and used inappropriately. This means that it may be used for the wrong purpose or at the wrong dosage.
By keeping the container tightly closed in a safe place, the chemical should be out of reach of children and unable to be opened by small children as well as less likely to spill.
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