The influence of age on the variation among sheep in susceptibility to natural nematode infection

M.J. Stear; S. Mitchell; S. Strain; S.C. Bishop; Quintin McKellar

doi:10.1016/S0304-4017(00)00196-5

The influence of age on the variation among sheep in susceptibility to natural nematode infection

M.J. Stear, S. Mitchell, S. Strain, S.C. Bishop, Quintin McKellar

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

A longitudinal study of faecal nematode egg counts was made in naturally infected Scottish Blackface sheep over two grazing seasons to 75 weeks of age. Although egg counts were lower in the second grazing season the variation among animals was greater. Egg counts were repeatable from 3 months of age. The repeatability of faecal egg counts within and between grazing seasons was about 0.3. Animals with lower than average egg counts in the first grazing season tended to have lower than average egg counts in the second grazing season. Therefore lambs with relatively low faecal egg counts after 3 months of age are likely to retain their advantage in the following year. (C) 2000 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	31-36
Number of pages	6
Journal	Veterinary Parasitology
Volume	89
Issue number	1
DOIs	https://doi.org/10.1016/S0304-4017(00)00196-5
Publication status	Published - 28 Mar 2000

Keywords

sheep-nematoda
immunity
age influence
Teladorsagia circumcincta

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10.1016/S0304-4017(00)00196-5

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title = "The influence of age on the variation among sheep in susceptibility to natural nematode infection",

abstract = "A longitudinal study of faecal nematode egg counts was made in naturally infected Scottish Blackface sheep over two grazing seasons to 75 weeks of age. Although egg counts were lower in the second grazing season the variation among animals was greater. Egg counts were repeatable from 3 months of age. The repeatability of faecal egg counts within and between grazing seasons was about 0.3. Animals with lower than average egg counts in the first grazing season tended to have lower than average egg counts in the second grazing season. Therefore lambs with relatively low faecal egg counts after 3 months of age are likely to retain their advantage in the following year. (C) 2000 Elsevier Science B.V. All rights reserved.",

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AU - Stear, M.J.

AU - Mitchell, S.

AU - Strain, S.

AU - Bishop, S.C.

AU - McKellar, Quintin

PY - 2000/3/28

Y1 - 2000/3/28

N2 - A longitudinal study of faecal nematode egg counts was made in naturally infected Scottish Blackface sheep over two grazing seasons to 75 weeks of age. Although egg counts were lower in the second grazing season the variation among animals was greater. Egg counts were repeatable from 3 months of age. The repeatability of faecal egg counts within and between grazing seasons was about 0.3. Animals with lower than average egg counts in the first grazing season tended to have lower than average egg counts in the second grazing season. Therefore lambs with relatively low faecal egg counts after 3 months of age are likely to retain their advantage in the following year. (C) 2000 Elsevier Science B.V. All rights reserved.

AB - A longitudinal study of faecal nematode egg counts was made in naturally infected Scottish Blackface sheep over two grazing seasons to 75 weeks of age. Although egg counts were lower in the second grazing season the variation among animals was greater. Egg counts were repeatable from 3 months of age. The repeatability of faecal egg counts within and between grazing seasons was about 0.3. Animals with lower than average egg counts in the first grazing season tended to have lower than average egg counts in the second grazing season. Therefore lambs with relatively low faecal egg counts after 3 months of age are likely to retain their advantage in the following year. (C) 2000 Elsevier Science B.V. All rights reserved.

KW - sheep-nematoda

KW - immunity

KW - age influence

KW - Teladorsagia circumcincta

U2 - 10.1016/S0304-4017(00)00196-5

DO - 10.1016/S0304-4017(00)00196-5

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EP - 36

JO - Veterinary Parasitology

JF - Veterinary Parasitology

IS - 1

ER -

The influence of age on the variation among sheep in susceptibility to natural nematode infection

Abstract

Keywords

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