Variability of vicuÃ±a fibre diameter in two protected natural areas of Peru

J. Ayala; M. Lopez; J. Chavez

Variability of vicuÃ±a fibre diameter in two protected natural areas of Peru

äºSouth American camelids research

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J. Ayala

J. Ayala ¹Instituto Nacional de Recursos Naturales, calle Diecisiete No 355 El Paloma, San Isidro, Lima, Peru; juedayala@hotmail.com

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M. Lopez

M. Lopez ²Universidad Nacional Agraria La Molina, Avenida La Universidad, La Molina, Lima, Peru.

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J. Chavez

J. Chavez ³Instituto Interamericano de CooperaciÃ³n AgrÃcola, Av. Jorge Basadre 1120, San Isidro, Lima, Peru.

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Page Range:: 225â227

DOI:: https://doi.org/10.3920/978-90-8686-576-5_026

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Fibre samples from one hundred two younger and older, male and female vicuÃ±as were collected during the Chaku Festival 2000, in the National Reserve Pampa Galeras â NRPG and the National Reserve Salinas y Aguada Blanca â NRSAB, in order to analize the phenotypic variability of mean, standard deviation and coefficient of variation of the fibre diameter within and between populations. The Sirolan Laserscan (IWTO-12-95) method was used to measure the mean fibre diameter of vicuÃ±a samples, which were corrected for sex and age effects. Components of variance were estimated using a nested design. The results of mean diameter in both populations were 13.37 micron (NRPG) and 13.82 micron (NRSAB) (P<0.05), respectively. The component of variance between populations (Ï2p) was lower than that within and between animals (Ï²_B and Ï²_w), for the mean (Ï²_p = 0.09 Î¼², Ï²_B = 0.28 Î¼² and Ï²_w = 0.27 Î¼²) and the coefficient of variation of fibre diameter (Ï²p = 0.205%2, Ï² B = 0.67%2 and Ï² w = 26,9%²). The component of variance between animals contributed 45% to all variance of the mean. On the other hand, the component of variance within animal contributed 96% and 97% to all variance of the standard deviation and the coefficient of variation of mean fibre diameter. The genetic variance and permanent environment contributed to the variation in fineness, and special environmental variance influenced the uniformity of vicuÃ±a fibre.

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South American camelids research

Volume 1

ISBN:: 9789086865765

åºçç¤¾:: Wageningen Academic

å°å·åºçæ¥æ:: 01 Nov 2006

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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Variability of vicuÃ±a fibre diameter in two protected natural areas of Peru

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South American camelids research

Volume 1

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