| Can an increased intake of metabolizable protein affect the periparturient relaxation in immunity against teladorsagia circumcincta in sheep? | |
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MedLine Citation:
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PMID: 10889359 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Within the overall hypothesis that the periparturient relaxation of immunity (PPRI) to gastrointestinal parasites has a nutritional basis, we studied whether an increased intake of metabolizable protein (MP) could affect the expression of immunity to Teladorsagia (Ostertagia) circumcincta of twin-bearing and -rearing Greyface ewes. Two sets of iso-energetic diets were formulated to provide either 85% (L-) or 130% (H-) of the MP requirements during the last 6 weeks of pregnancy (-P) and the first 6 weeks of lactation (-L). Thirty ewes were allocated to LP or HP. Six ewes of each group were slaughtered after lambing (S(0)); the remaining 24 ewes of each group were allocated to either LL or HL, thus creating four treatment combinations during lactation (LP/LL, LP/HL, HP/LL and HP/HL; n=12). Six ewes of each treatment combination were slaughtered at Week 3 (S(3)) or at Week 6 (S(6)) in lactation. The HP ewes were heavier at lambing, produced heavier lambs, had lower faecal egg counts (FECs), a lower concentration of plasma pepsinogen, a higher concentration of plasma albumin during late pregnancy and more abomasal globule leukocytes (GLs) but similar worm burdens at S(0) compared to the LP ewes. The LP/HL and HP/HL ewes had a higher calculated milk production than the LP/LL and HP/LL ewes. FECs increased for each treatment combination during the first 3 weeks of lactation. This increase concurred with fewer abomasal GLs at S(3) compared to S(0). The LP/HL and HP/HL ewes had a higher proportion of immature worms and more abomasal GLs than the LP/LL and HP/LL ewes at S(6). The FECs continued to increase during the second 3 weeks of lactation for the LP/LL ewes only, which concurred with an elevated plasma pepsinogen concentration and an absence of abomasal GLs at S(6). The plasma pepsinogen concentration decreased rapidly for the LP/HL ewes during lactation. We conclude that an increased intake of MP could enhance the expression of immunity to T. circumcincta of twin-bearing and -rearing Greyface ewes. |
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Authors:
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J G Houdijk; I Kyriazakis; F Jackson; J F Huntley; R L Coop |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Veterinary parasitology Volume: 91 ISSN: 0304-4017 ISO Abbreviation: Vet. Parasitol. Publication Date: 2000 Jul |
Date Detail:
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Created Date: 2000-09-05 Completed Date: 2000-09-05 Revised Date: 2009-11-03 |
Medline Journal Info:
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Nlm Unique ID: 7602745 Medline TA: Vet Parasitol Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 43-62 Citation Subset: IM |
Affiliation:
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Animal Nutrition and Health Department, Animal Biology Division, Scottish Agricultural College, Kings Buildings, EH9 3JG, Edinburgh, UK. j.houdijk@ed.sac.ac.uk |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animal Feed Animals Blood Proteins / analysis Dietary Proteins / administration & dosage, pharmacology* Energy Intake* Female Male Ostertagia / immunology* Ostertagiasis / immunology, veterinary Pepsinogen A / blood Pregnancy Pregnancy Complications, Parasitic / immunology* Sheep Sheep Diseases / immunology* |
| Chemical | |
Reg. No./Substance:
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0/Blood Proteins; 0/Dietary Proteins; 9001-10-9/Pepsinogen A |
| Comments/Corrections | |
Erratum In:
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Vet Parasitol 2000 Nov 10;93(2):175-8 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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