Effect of forage legumes and anthelmintic treatment on the performance, nutritional status and nematode parasites of grazing lambs

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Effect of forage legumes and anthelmintic treatment on the performance, nutritional status and nematode parasites of grazing lambs. / Marley, Christina L.; Fraser, Mariecia D.; Fychan, Aled Rhun; Theobald, Vince J.; Jones, Raymond.

In: Veterinary Parasitology, Vol. 131, No. 3-4, 10.08.2005, p. 267-282.

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@article{c5316e1430c941bda432481c20e7ce3b,
title = "Effect of forage legumes and anthelmintic treatment on the performance, nutritional status and nematode parasites of grazing lambs",
abstract = "Recent studies in New Zealand and the UK have shown that certain forages reduce parasitic infection in sheep. The aim of this experiment was to investigate the effects of legume forages compared to ryegrass on interactions between production, nutritional status and nematodes in grazing lambs. Twenty-four male lambs per forage treatment, half of which were treated with anthelmintics on Day 0, grazed monocultures of lucerne (Medicago sativa), red clover (Trifolium pratense) and white clover (Trifolium repens) and were compared with lambs grazing perennial ryegrass (Lolium perenne). Individual faecal egg counts (FEC) and liveweight were determined every 7 days for 56 days, after which half the lambs were slaughtered to determine total nematode intensities (TNI). Results showed that lambs grazed on red or white clover, but not lucerne, had lower pooled mean FEC and improved liveweight performance compared to lambs grazing ryegrass. Lambs treated with anthelmintics had higher TNI compared to lambs not treated, due to a trend for more adult nematodes in lambs grazing lucerne and treated with anthelmintics than all other lambs, except those grazing red clover and also given anthelmintics. Lambs grazing white clover tended to have fewer adult nematodes than lambs grazing other forages. Examination of the nematode species showed a change in female T. circumcincta occurred in all lambs following anthelmintic treatment and that the forage species grazed by lambs affected individual parasite species. Lambs grazing white clover had fewer male and adult T. circumcincta compared to lambs grazing other forages, and lambs grazing lucerne had fewer adult T. circumcincta compared to lambs grazing ryegrass or red clover. Data on small intestine TNI showed that lambs grazing lucerne and given anthelmintics had more male adult nematodes than other lambs, except those grazing red clover and treated with anthelmintics. Results indicate that lucerne and red clover both increase the re-infection of grazing lambs with Trichostrongylus species compared to ryegrass following anthelmintic treatment. In conclusion, legume forages have the potential to contribute to the control of abomasal but not small intestine nematode parasites in finishing lamb systems.",
keywords = "Gastrointestinal nematodes, internal parasites, sheep-nematoda, forage legumes, high protein forages",
author = "Marley, {Christina L.} and Fraser, {Mariecia D.} and Fychan, {Aled Rhun} and Theobald, {Vince J.} and Raymond Jones",
note = "Marley, C. L., Fraser, M. D., Fychan, A. R., Theobald, V. J., Jones, R. (2005). Effect of forage legumes and anthelmintic treatment on the performance, nutritional status and nematode parasites of grazing lambs.   Veterinary Parasitology, 131 (3-4), 267-282 Sponsorship: UK Department for the Environment, Food and Rural Affairs and the UK Meat and Livestock Commission",
year = "2005",
month = aug,
day = "10",
doi = "10.1016/j.vetpar.2005.04.037",
language = "English",
volume = "131",
pages = "267--282",
journal = "Veterinary Parasitology",
issn = "0304-4017",
publisher = "Elsevier",
number = "3-4",

}

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TY - JOUR

T1 - Effect of forage legumes and anthelmintic treatment on the performance, nutritional status and nematode parasites of grazing lambs

AU - Marley, Christina L.

AU - Fraser, Mariecia D.

AU - Fychan, Aled Rhun

AU - Theobald, Vince J.

AU - Jones, Raymond

N1 - Marley, C. L., Fraser, M. D., Fychan, A. R., Theobald, V. J., Jones, R. (2005). Effect of forage legumes and anthelmintic treatment on the performance, nutritional status and nematode parasites of grazing lambs.   Veterinary Parasitology, 131 (3-4), 267-282 Sponsorship: UK Department for the Environment, Food and Rural Affairs and the UK Meat and Livestock Commission

PY - 2005/8/10

Y1 - 2005/8/10

N2 - Recent studies in New Zealand and the UK have shown that certain forages reduce parasitic infection in sheep. The aim of this experiment was to investigate the effects of legume forages compared to ryegrass on interactions between production, nutritional status and nematodes in grazing lambs. Twenty-four male lambs per forage treatment, half of which were treated with anthelmintics on Day 0, grazed monocultures of lucerne (Medicago sativa), red clover (Trifolium pratense) and white clover (Trifolium repens) and were compared with lambs grazing perennial ryegrass (Lolium perenne). Individual faecal egg counts (FEC) and liveweight were determined every 7 days for 56 days, after which half the lambs were slaughtered to determine total nematode intensities (TNI). Results showed that lambs grazed on red or white clover, but not lucerne, had lower pooled mean FEC and improved liveweight performance compared to lambs grazing ryegrass. Lambs treated with anthelmintics had higher TNI compared to lambs not treated, due to a trend for more adult nematodes in lambs grazing lucerne and treated with anthelmintics than all other lambs, except those grazing red clover and also given anthelmintics. Lambs grazing white clover tended to have fewer adult nematodes than lambs grazing other forages. Examination of the nematode species showed a change in female T. circumcincta occurred in all lambs following anthelmintic treatment and that the forage species grazed by lambs affected individual parasite species. Lambs grazing white clover had fewer male and adult T. circumcincta compared to lambs grazing other forages, and lambs grazing lucerne had fewer adult T. circumcincta compared to lambs grazing ryegrass or red clover. Data on small intestine TNI showed that lambs grazing lucerne and given anthelmintics had more male adult nematodes than other lambs, except those grazing red clover and treated with anthelmintics. Results indicate that lucerne and red clover both increase the re-infection of grazing lambs with Trichostrongylus species compared to ryegrass following anthelmintic treatment. In conclusion, legume forages have the potential to contribute to the control of abomasal but not small intestine nematode parasites in finishing lamb systems.

AB - Recent studies in New Zealand and the UK have shown that certain forages reduce parasitic infection in sheep. The aim of this experiment was to investigate the effects of legume forages compared to ryegrass on interactions between production, nutritional status and nematodes in grazing lambs. Twenty-four male lambs per forage treatment, half of which were treated with anthelmintics on Day 0, grazed monocultures of lucerne (Medicago sativa), red clover (Trifolium pratense) and white clover (Trifolium repens) and were compared with lambs grazing perennial ryegrass (Lolium perenne). Individual faecal egg counts (FEC) and liveweight were determined every 7 days for 56 days, after which half the lambs were slaughtered to determine total nematode intensities (TNI). Results showed that lambs grazed on red or white clover, but not lucerne, had lower pooled mean FEC and improved liveweight performance compared to lambs grazing ryegrass. Lambs treated with anthelmintics had higher TNI compared to lambs not treated, due to a trend for more adult nematodes in lambs grazing lucerne and treated with anthelmintics than all other lambs, except those grazing red clover and also given anthelmintics. Lambs grazing white clover tended to have fewer adult nematodes than lambs grazing other forages. Examination of the nematode species showed a change in female T. circumcincta occurred in all lambs following anthelmintic treatment and that the forage species grazed by lambs affected individual parasite species. Lambs grazing white clover had fewer male and adult T. circumcincta compared to lambs grazing other forages, and lambs grazing lucerne had fewer adult T. circumcincta compared to lambs grazing ryegrass or red clover. Data on small intestine TNI showed that lambs grazing lucerne and given anthelmintics had more male adult nematodes than other lambs, except those grazing red clover and treated with anthelmintics. Results indicate that lucerne and red clover both increase the re-infection of grazing lambs with Trichostrongylus species compared to ryegrass following anthelmintic treatment. In conclusion, legume forages have the potential to contribute to the control of abomasal but not small intestine nematode parasites in finishing lamb systems.

KW - Gastrointestinal nematodes

KW - internal parasites

KW - sheep-nematoda

KW - forage legumes

KW - high protein forages

U2 - 10.1016/j.vetpar.2005.04.037

DO - 10.1016/j.vetpar.2005.04.037

M3 - Article

C2 - 15946801

VL - 131

SP - 267

EP - 282

JO - Veterinary Parasitology

JF - Veterinary Parasitology

SN - 0304-4017

IS - 3-4

ER -

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