Validation of long chain fatty acids as markers to estimate diet composition of equines fed on grassland-heathland vegetation components

L.M.M. Ferreira; A.S. Santos; R. Celaya; V. Falco; M.A.M. Rodrigues; K. Osoro

Validation of long chain fatty acids as markers to estimate diet composition of equines fed on grassland-heathland vegetation components

In: The impact of nutrition on the health and welfare of horses

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L.M.M. Ferreira

L.M.M. Ferreira ¹CECAV-Univeristy of Trás-os-Montes and Alto Douro, Animal Production Group, P.O. Box 1013, 5001-901 Vila Real, Portugal

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A.S. Santos

A.S. Santos ¹CECAV-Univeristy of Trás-os-Montes and Alto Douro, Animal Production Group, P.O. Box 1013, 5001-901 Vila Real, Portugal

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R. Celaya

R. Celaya ²SERIDA- Servicio Regional de Investigación y Desarrollo Agroalimentario, Apartado 13, 33300 Villaviciosa, Asturias, Spain

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V. Falco

V. Falco ³Departamento de Agronomia, Universidade de Trás-os-Montes e Alto Douro, P.O. Box 1013, 5001-801 Vila Real, Portugal

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M.A.M. Rodrigues

M.A.M. Rodrigues ¹CECAV-Univeristy of Trás-os-Montes and Alto Douro, Animal Production Group, P.O. Box 1013, 5001-901 Vila Real, Portugal

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K. Osoro

K. Osoro ²SERIDA- Servicio Regional de Investigación y Desarrollo Agroalimentario, Apartado 13, 33300 Villaviciosa, Asturias, Spain

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Type:: Chapter

Pages:: 133–135

DOI:: https://doi.org/10.3920/978-90-8686-711-0_026

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The main objective of this study was to validate the use of long-chain fatty acids (LCFA) as markers to estimate diet composition of equines fed with diets composed of herbaceous and woody species. Six crossbreed mares (434±59 kg LW) were divided in 2 groups and each group was fed one of two different diets: D1 100% Lolium perenne; D2 70% L. perenne + 30% heather (Erica spp., Calluna vulgaris). Diet composition was estimated from LCFA concentrations (C22 to C34) in diet and faeces, with (i.e. mean recovery rate of the dietary treatment that the animal belonged to) or without correction for incomplete faecal recoveries using least-squares procedures. Results showed clear differences in the LCFA profiles among diet components. LCFA faecal recovery was in general incomplete and tended to decrease with carbon chain length in a curvilinear fashion (P<0.001) and was affected by diet composition (P<0.001). Results also showed that diet composition was accurately estimated with or without faecal recovery correction in both diets, confirming the usefulness of LCFA as diet composition markers for studying diet selection of equines in diverse plant communities.

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The impact of nutrition on the health and welfare of horses

Series: EAAP Scientific Series, Volume: 128

E-Book ISBN:: 9789086867110

Publisher:: Wageningen Academic

Print Publication Date:: 30 Oct 2010

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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Validation of long chain fatty acids as markers to estimate diet composition of equines fed on grassland-heathland vegetation components

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The impact of nutrition on the health and welfare of horses

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