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Answers and links to further information are provided below the image.

Questions

1. List the different groups of drenches.

2. What are the 3 approaches you could take in breeding for plainer, more fly resistant sheep?

3. Where do you find information on the minimum protective clothing and equipment recommended when applying lice treatments?

4. Under what conditions should individual goats be routinely drenched, and when?


Selection for plainness increases resistance to flystrike
Selection for plainness increases resistance to flystrike

Answers

1. List the different groups of drenches.

  • BZ or benzimidazole group (‘white’)
  • LV or levamisole group (‘clear’)
  • ML or macrocyclic lactone group (sometimes called ‘mectins’)
  • AD or amino-acetonitrile derivative group
  • SI or spiroindole group
  • OP or organophosphate group
  • TZ or benzimidazole group (flukicide)
  • SP or salicylanilides/phenols group
  • IQ or isoquinolone group

2. What are the 3 approaches you could take in breeding for plainer, more fly resistant sheep?

  • Single trait selection for less wrinkle;
  • Balanced selection for less wrinkle and other traits within-flock;
  • Balanced selection combined with across-flock selection.

3. Where do you find information on the minimum protective clothing and equipment recommended when applying lice treatments?

On the product label.

4. Under what conditions should individual goats be routinely drenched, and when?

Where it is not practical to conduct WormTests, all goats that have one of more of:

  • Body Condition Score of 2 or less (poor condition)
  • FAMACHA score of 4 or 5 (pale and anaemic)
  • Faecal consistency score of 5 (diarrhoea or scours)

Kids, young goats from weaning to 18 months of age, bucks or does during late pregnancy and lactation that have one of these:

  • Body Condition Score of 2.5 or less (moderate to poor condition)
  • FAMACHA score of 3 (moderate anaemia)