Abstract

APAZA, Julio Málaga et al. Characteristics of alpaca fibre in the dry agroecological zone in the Peruvian highlands. Rev. investig. vet. Perú [online]. 2022, vol.33, n.6, e22401.  Epub Dec 22, 2022. ISSN 1609-9117.  http://dx.doi.org/10.15381/rivep.v36i6.22401.

The aim of this study was to evaluate the main physical characteristics and correlations of fibre diameter (FD), coefficient of variation (CVFD), comfort factor (CF) and itching factor (IF) of alpaca fibre in the dry agroecological zone of the Puno region, Peru. In total, 14 068 fibre samples were collected and analysed with the OFDA 2000 equipment. The factors sex (male, female), breed (Suri, Huacaya), age (DL: milk teeth; 2 DL: two teeth; 4D: four teeth; BLL: full mouth) and province (Melgar, Chucuito, Puno, El Collao, Lampa, San Román) through a factorial arrangement of 2×2×4×6 was evaluated. The FD was influenced by age, sex, breed and province (p<0.01), being smaller in alpacas DL (20.10 µm) and thicker in BLL (23.29 µm). In males it was 21.25 µm and in females 21.91 µm (p<0.05) and in Huacaya alpacas 21.25 µm and in Suri 22.21 µm (p<0.05). The CVFD and IF variables varied according to age, sex, breed and province (p<0.01), as did the CF, except for sex. The FD and FC showed a high and negative correlation (r=-0.89) and the FD with CVFD had a low and negative correlation (r=-0.11). The IF and CF correlations were negative and high (r=-0.67). Alpacas from the dry agroecological zone of the Puno region produce good quality fibre with good potential for genetic improvement.

Keywords : alpaca; fibre characteristics; age; OFDA.

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