camélidos sudamericanos

abril 4, 2024SOUTH AMERICAN CAMELIDS

Classification of South American Camelid and goat fiber samples based on fourier transform infrared spectroscopy and machine learning

ABSTRACT Some animal fibers are considerably cheaper than others. Hence the existence of counterfeit products, which are detrimental to legitimate producers and consumers alike. Fourier-Transform Infrared (FTIR) spectroscopy can extract a characteristic waveform from fibers that can be later used for classification. However, visually inspecting such waveforms is imprecise. Previous research has complemented FTIR with […]

agosto 7, 2023SOUTH AMERICAN CAMELIDS

Fiber density and hair ducts in the skin of alpacas: Quantification, heritability, and genetic correlations

ABSTRACT Alpaca fibers are used to create luxury garments, and simultaneous selection for optimizing fiber density and the density of hair ducts in the skin of alpacas could result in a more profitable product for breeders. The objective of this study was i) to quantify fiber density (FibDen), density of hair ducts (DenDuc), and the […]

mayo 30, 2023SOUTH AMERICAN CAMELIDS

Development and validation of a smart system for medullation and diameter assessment of alpaca, llama and mohair fibres

ABSTRACT Medullated fibres, due to their higher resistance to bending and pressure, constitute a problem for the textile industry. Thus, having practical instruments to identify them is essential. Therefore, the aim of this research was to develop and validate a novel, swift, automatic system (referred to as S-Fiber Med) for medullation and diameter assessment of […]

abril 28, 2023SOUTH AMERICAN CAMELIDS

Densidad de fibras y densidad de conductos pilosos como criterios de selección para mejorar la calidad y el peso de vellones de alpacas

RESUMEN Mejoras en el peso de vellón de sucio (PVe) y diámetro medio de la fibra (DMF) favorece los ingresos de los productores de alpacas; sin embargo, estas variables están relacionadas directamente, complicando el mejoramiento simultáneo de ambas características. Por tanto, se requiere buscar nuevos criterios de selección para la mejora simultánea de ambas características. […]

junio 30, 2022SOUTH AMERICAN CAMELIDS

ESTIMACIÓN DE DENSIDAD DE FIBRA EN ALPACAS DEL CENTRO DE DESARROLLO ALPAQUERO TOCCRA CEDAT – DESCO DEL DEPARTAMENTO DE AREQUIPA

Resumen La investigación fue ejecutada en el Centro de Desarrollo Alpaquero Toccra CEDAT– DESCO, ubicado en el Departamento de Arequipa; con el objetivo de cuantificar la densidad de fibras (DenFib), densidad de conductos pilosos (DenCP) y relación fibras/conductos (Fib/CP), así como estimar el grado de relación entre dichas características. Se evaluaron 344 alpacas de diferente [...]

mayo 14, 2022SOUTH AMERICAN CAMELIDS

Application of artificial intelligence and digital images analysis to automatically determine the percentage of fiber medullation in alpaca fleece samples

Abstract The aim of this research is to develop and validate two computer programs based on artificial intelligence (AI) and digital image analysis (DIA) in order to determine the incidence of medullation in white alpaca fibers. Two data sets were analyzed: 76 samples of Huacaya alpaca fibers obtained from Huancavelica, Peru, and 200 samples of [...]

diciembre 13, 2021SOUTH AMERICAN CAMELIDS

Calibration and validation of the Mini-fiber EC image analysis instrument mean fiber diameter through direct or primary measurements

Abstract The Minifiber EC (MFEC) is a portable instrument for measuring the diameter of animal fibers. Its accuracy and precision have been estimated but by comparing its measurements with those of laboratory devices that had been calibrated on other devices in turn, not on a direct or primary measure of diameter. This work attempts to [...]

junio 30, 2019SOUTH AMERICAN CAMELIDS

Comparación de la precisión y exactitud de cuatro equipos para determinar la media del diámetro de fibra y desviación estándar de fibra de alpaca

RESUMEN El objetivo fue la precisión y exactitud de cuatro equipos que evalúan la Media del Diámetro de Fibra (MDF) y Desviación Estándar (DS), realizado en el Laboratorio de Fibras Textiles, Pieles y Cueros de la Facultad de Zootecnia de la Universidad Nacional Agraria la Molina. Los equipos utilizados: MiniFiber-EC, Fiber EC, Laserscan (LSN) y […]

agosto 7, 2017SOUTH AMERICAN CAMELIDS

Development and preliminary validation of an automatic digital analysis system for animal fibre analysis

Conclusion An advanced driver assisted system (ADAS) called FIBER-EC was designed and developed. It is capable of performing AF, SDAFD, CVAFD, CF, PF and SF, derived in farm conditions, with a system of computer vision, implemented and associated with a mechanical structure for generating displacement of a sample holder in the XY plane. Environmental temperature [...]

octubre 28, 2015SOUTH AMERICAN CAMELIDS

Comparación de la dieta de rebaños mixtos en pajonales altoandinos

Comparación de la dieta de rebaños mixtos en pajonales altoandinos Resumen El objetivo de este trabajo fue comparar la composición de la dieta de distintas especies ganaderas bajo pastoreo mixto en la puna. Se cercaron cuatro parcelas en dos zonal de pajonal que fueron pastoreadas por rebaños mixtos de alpaca-llama, ovino-bovinos, alpaca-ovino y alpaca-bovino. Mediante [...]