Abstract

PINARES, Rubén  and  YAURI, Wilder Vladimir. Phenotypic variations of the textile characteristics of pre-dehaired fibre of vicuña. Rev. investig. vet. Perú [online]. 2019, vol.30, n.4, pp.1592-1602. ISSN 1609-9117.  http://dx.doi.org/10.15381/rivep.v30i4.17265.

The aim of this study was to evaluate the effect of the age and sex of the vicuña on the mean fibre diameter (MFD), spinning fineness, curvature index, fibre length and fibre diameter profile; also, to calculate the phenotypic correlations between fibre textile characteristics. Pre-dehaired samples (n=88) were analysed with the OFDA 2000 equipment. In the statistical model the age, sex and age:sex interaction were considered as fixed effects. Sex had a significant effect on the phenotypic variations of MFD, maximum and minimum diameter profile; likewise, age had a significant effect on MFD, spinning fineness and minimum profile diameter. However, the interaction of sex and age had no effect on the characteristics studied. The phenotypic correlations were significant and positive between DMF and spinning fineness, spinning fineness and standard deviation of diameter, standard deviation and coefficient of variation of diameter, standard deviation of diameter and diameter difference in fibre profile. Phenotypic correlations were negative: percentage of fibres <30 µm with standard deviation of fibre diameter, coefficient of variation of diameter, and spinning fineness. In addition, there is phenotypic variability of MFD and fibre diameter profile in adult and juvenile vicuñas. Age, sex and pre-dehairing affected some fibre characteristics related to the fineness and comfort of the fibre.

Keywords : vicuña; fine fibre; fibre length; fibre diameter profile.

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