Læknablaðið - 01.02.1968, Side 61

LÆKNABLAÐIÐ
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SUMMARY
1) Nematodes in sheep and cattle in Iceland are described.
2) It is concluded as very probable that some species of nematodes
causing losses in domestic animals in other countries are not
found in Iceland. No preventive measures against introduction of
new species of nematodes have been enforced when importing
animals, although introduction of new species could be very
harmful to the Icelandic agriculture.
3) Ostertagia circumcincta is described, as well as its live cycle,
infestation of lambs during summer and formation of antibodies
in the lambs during autumn.
4) The results of nematode egg counts in faeces of ewes and lambs
and how such counts can give an indication of the amount of
nematodes in the animals, is described as well as the development
of worms according to seasons, and the effect of anthelmintics.
5) The formation of antibodies against nematodes and the effects
of proper nutrition is discussed also various drowbacks of the
use of anthelmintics.
Heimildir
1) Threlkeld, W. L. (1934): The life-history of Ostertagia circum-
cincta. Tech. Bull Va agric. Exp. Sta., No 52.