8: SCOPS/control of GIN

Question 1

What’s the advantage of giving ewes extra protein?

Answer 1

Can maintain immunity, grow lambs, produce milk

Question 2

How else can you improve immunity to worms?

Answer 2

By correcting mineral defiencies

Question 3

Which breed are especially susceptible to GINs?

Answer 3

Suffolk

Question 4

How do you score a ram for worm resistance?

Answer 4

FEC at 21 weeks

Question 5

What counts as clean grazing?

Answer 5

New leys, previous horses or cows, ungrazed for 2 years, last grazed by adult ewes, few parasitic worm larvae

Question 6

Which 4 factors affect grazing risk?

Answer 6

Herbage height, UV light, humidity, rainfall

Question 7

What is the advantage in finishing lambs quickly?

Answer 7

They are off the farm before major worm challenge

Question 8

How do bio-active forages work?

Answer 8

Reduce worm impact due to tannins and high proteins and trace elements e.g. chicory

Question 9

How does nematophagous fungus work?

Answer 9

Grows in dung and eats the worm larvae

Question 10

What is a disadvantage of nematophagous fungus?

Answer 10

Needs continual administration

Question 11

In which kind of sheep do you see tolerance?

Answer 11

Hill ewes - with high egg count but no disease

Question 12

What does resilience mean?

Answer 12

The capacity to maintain production in the face of challenge

Question 13

What is heritability of resilience like?

Answer 13

Low

Question 14

Does resilience correalte with resistance?

Answer 14

No

Question 15

What MUST you do if treating clinical or subclinical disease?

Answer 15

Prevent heavy reinfection

Question 16

How do you detect AMR?

Answer 16

Submit faecal samples after drenching to check the count is 0

Question 17

What can you do instead of long acting product?

Answer 17

Frequent dosing

Question 18

Is under-dosing or frequent treatment a more important mechanism of resistance?

Answer 18

Frequent treatment

Question 19

Why should you withold feed before drenching for 24 hours?

Answer 19

Increases drug concentration by 40%

Question 20

Why is treating ewes at lambing time a heavy selector for resistance?

Answer 20

Already start the season with resistant ewes

Question 21

How many more eggs do ewes with twins and triplets shed around lambing than singles?

Answer 21

70-90%

Question 22

Do ewe lambs or ewes shed more?

Answer 22

Ewe lambs

Question 23

Which pregnant ewes should you not treat?

Answer 23

Singles, or twins or triplets of BCS 4 or higher

Question 24

How much below the target weight growth should you treat?

Answer 24

Any growing less than 0.66 of the target weight

Question 25

How many wormers should you use at one time?

Answer 25

2-3 - but don’t mix

Question 26

What is productivity like in SCOPs farms?

Answer 26

Higher

Question 27

How do you treat new sheep on arrival?

Answer 27

With a wormer with no known resistance, then house for 48 hours so no eggs end up on pasture

Question 28

How can you preserve in refuga?

Answer 28

Leave 10% untreated, move to new pasture then treat, leave on contaminated pasture after treatment to pick up unexposed worms