• A Feasibility Study of the Classification of Alpaca (Lama pacos) Wool Samples From Different Ages, Sex and Color by Means of Visible and Near Infrared Reflectance Spectroscopy

    A. W. Canaza-Cayo, D. Cozzolino, D. Alomar, E. Quispe

    Date of Publication:
    Octpber 2012

    Computers and Electronics in Agriculture, Volume 88, October, 2012, Pages 141-147

    The usefulness of classifying the Alpaca wool samples according to their color, sex and location is associated with their economic value in the market, hence adequate methods for rapid classification are needed to assess the of wool value. This study evaluated the potential of the visible and near infrared (vis-NIR) spectroscopy combined with multivariate statistical analysis to classify Alpaca (Lama Pacos) fiber samples according to age (1 and 2-3-year-old), sex (Male and Female) and color (Black, Brown, LF and White). Samples (n=291) were scanned in reflectance mode in the wavelength range of 400-2500nm using a monochromator instrument (FOSS NIRSystems6500, Inc., Silver Spring, MD, USA). Principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) were used to classify fiber samples. Cross-validation was used for validation of classification models developed. Results showed that PLS-DA correctly classified 100% of fiber samples into ages, intermediate classification rates were obtained for color, while lower classification rates were obtained for the discrimination of wool samples according to sex. The results from this study suggested that vis-NIR spectroscopy in combination with multivariate data analysis can be used as a rapid method to classify Alpaca fiber samples according to age, sex and color.

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  • Alpaca Fiber For Profit Course

    Jim Tomaszek with editorial assistance provided by Pam Welty
    The North American Alpaca Federation Alpaca University, United States

    Date of Publication:

    The North American Alpaca Federation Alpaca University

    A series of educational presentations aimed at providing an extensive look at all factors to be taken into consideration when exploring the potential of participating in the alpaca industry.

    Module 1: The Current and Potential Value of Alpaca Fiber
    Read the rest of the article: alpaca-fiber-for-profit-course-module-1-march-03-2010.doc

    Module 2: Alpaca Fiber Evaluation - The Objective and Subjective
    Read the rest of the article: alpaca-fiber-for-profit-course-module-2-march-4-2010.doc

    Module 3: Histograms and Follicular Skin Biopsies
    Read the rest of the article: alpaca-fiber-for-profit-course-module-3-may-06-2010.doc

    Module 4: How to Make Money with Alpaca Fiber: The Alpaca Fiber Value Chain
    Read the rest of the article: alpaca-fiber-for-profit-course-module-4-may-06-2010.doc

    Module 5: On Density and Follicular Skin Biopsies
    Read the rest of the article:  alpaca-fiber-for-profit-course-module-5-2010.doc