Banca de DEFESA: LIA SOUZA COELHO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : LIA SOUZA COELHO
DATA : 16/07/2018
HORA: 09:00
LOCAL: ANFITEATRO DO INSTITUTO DE ZOOTECNIA DA UFRRJ
TÍTULO:

Qualitative and Quantitative Evaluation of Brazilian Cashmere: Innovation in Goat Production.

PALAVRAS-CHAVES:

Keywords: Natural fibers. Animal fibers. Quality. Undercoat. Physical properties.

PÁGINAS: 99
GRANDE ÁREA: Ciências Agrárias
ÁREA: Zootecnia
SUBÁREA: Produção Animal
RESUMO:

ABSTRACT GERAL
COELHO, Lia Souza. Qualitative and Quantitative Evaluation of Brazilian Cashmere: Innovation in Goat Production. 2018. 171p Thesis (Doctorate in Animal Science, Animal Production). Institute of Animal Science, Federal Rural University of Rio de Janeiro, Seropédica, RJ, 2018.
The cashmere fiber is a textile fiber produced only by goats, being considered luxury fiber, with great commercial value. World cashmere production is in the order of 11 to 14 tons per year, with China, Mongolia, Nepal, Australia, Argentina and the United States being the main producers. The Brazilian cashmere fiber produced by different breeds in Brazil was only recognized in 2014. Products with cashmere are considered luxurious and elegant, since they offer excellent isolation; warm in winter and cool in spring and are durable. However, evaluation of Brazilian cashmere fiber and the production of yarn and fabric had not yet been performed. The present study aimed to evaluate the quality and quantity of Brazilian cashmere fibers. Furthermore, produce and evaluate the quality of the first yarn and fabric of Brazilian cashmere. Scanning electron microscopy (SEM), Optical Fiber Diameter Analyzer (OFDA) and Classifiber were used for the analyzes. Brazilian cashmere fibers have a mean fiber length of 22.1 ± 0.1 mm, mean fiber diameter 13.6 μm, CV mean fiber diameter of the thin fiber 19%, fiber curvature angle 67.7 ± 0.5 °/mm, scale frequency 6.7 scales /100μm, scale thickness 360 nm, comfort factor 99.6%, mean length 22.1 ± 0.2 mm, tenacity 12.2 (cN/tex). The mean yield cashmere fiber of cleaned and washed was 52.07 ± 1.0% (11.24 - 88.69%). The mean Brazilian cashmere weight was 10.28 g (3.15 - 1886.9 g). The Brazilian cashmere fine fiber is released in late winter in the southern hemisphere. The cashmere fibers were considered of superior quality the commercial fibers. The first commercial-grade Brazilian cashmere yarn and fabric was produced.

MEMBROS DA BANCA:
Presidente - 992.419.196-04 - ELISA CRISTINA MODESTO - UFRGS
Externo ao Programa - 1723192 - ANTONIO RENATO BIGANSOLLI
Externo à Instituição - GISELE MARIA LEITE DALMÔNICO - CBPF
Externo à Instituição - RAFAEL DA SILVA ARAUJO - SENAI
Externo à Instituição - SIMONE MARIA DE REZENDE - OUTRO