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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Características agronômicas, químicas e bromatológicas de variedades de cana-de-áçucar para uso forrageiro / Agronomic and chemical-homatologic traits of sugarcane varities to use as forage

KLEIN, Vania 31 March 2010 (has links)
Made available in DSpace on 2014-07-29T14:42:46Z (GMT). No. of bitstreams: 1 Dissertacao Vania Klein.pdf: 113577 bytes, checksum: 68d209c72d2c6daa64ae70b560da5ec1 (MD5) Previous issue date: 2010-03-31 / Six sugarcane varieties were evaluated for their agronomic, chemical and bromatologic characteristics, aiming to determine the most advisable to use as cattle feed. The varieties tested were: RB72454, RB835486, SP80-1816, SP79-1011, RB855536 and RB835054. Fresh matter (FM) and dry matter (DM) yield, viable and no-viable stalks per meter (VS and NVS/m), total of stalk internodes (SI), percentage of uncovered internodes (PUD), stalk length (SL), diameter (SD) and density (SDE) of stalk, plant stalk percentage (SP), Brix, Pol, reducing sugars(RS) and total reducing sugars (TRS), crude protein (CP), mineral matter (MM), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were analyzed. The experiment was conducted in randomized block design with six treatments and five replications. The cut occurred 17 months after planting. RB835054 variety had higher yield (P<0.05), reaching 115.54 and 33.01 t ha-1 of FM and DM, respectively. FM and DM yields were highly correlated with VS/m. NDF and ADF contents of SP79-1011 variety were the lower levels, 44.32% and 24.63, respectively and did not differ for RB835054 NDF (P>0.05). RB835054 and SP-791011 varieties showed greater viability for use in animal nutrition. / Seis variedades de cana-de-açúcar foram analisadas quanto aos seus caracteres agronômicos, químicos e bromatológicos, objetivando determinar a mais recomendável para a alimentação de bovinos. As variedades avaliadas foram: RB72454, RB835486, SP80-1816, SP79-1011, RB855536 e RB835054. Foram determinadas a produção de matéria natural (MN) e de matéria seca (MS), colmos viáveis e não viáveis por metro (CV e CNV/m), total de internódios no colmo (TI), porcentagem de internódios descobertos (PID), comprimento (CC), diâmetro (DC) e densidade (DEC) de colmo, porcentagem de colmo na planta (PC), Brix, Pol, açúcares redutores (AR) e açúcares redutores totais (ART), proteína bruta (PB), matéria mineral (MM), fibra em detergente neutro (FDN) e fibra em detergente ácido (FDA). O experimento foi instalado em delineamento de blocos ao acaso com seis tratamentos e cinco repetições. O corte ocorreu 17 meses após o plantio. A variedade RB835054 apresentou produtividade superior (P<0,05), atingindo 115,54 e 33,01 t/ha de MN e MS, respectivamente. As produções de MN e MS apresentaram correlação positiva com CV/m. Para os teores de FDN e FDA a variedade SP79- 1011 apresentou os menores teores, 44,32% e 24,63, respectivamente, não diferindo (P>0,05) da RB835054 em FDN. As variedades RB835054 e SP79-1011 apresentaram maior viabilidade para utilização na nutrição animal.

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