Navegando por Assunto "Fibra em detergente neutro"

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Acesso aberto (Open Access)
Efeito do tamanho de partícula do volumoso e da freqüência de alimentação sobre o consumo e a digestibilidade em ovinos
(Universidade Federal do Pará, 2012-03) GOMES, Silas Primola; BORGES, Ana Luisa Costa Cruz; BORGES, Iran; MACEDO JUNIOR, Gilberto de Lima; SILVA, André Guimarães Maciel e; PANCOTI, Carlos Giovani
Intake, apparent digestibility and ingestive behavior were studied in sheep fed four particle size of forage in two daily frequencies. Twentyfour sheep with live weight of 37.0kg were studied in a completely randomized design in factorial 2x4 scheme (two feeding frequency and 4 particle sizes) totaling six animals per treatment. Tifton-85 hay and a commercial concentrate were used with a ratio of 25:75%, respectively. The responses of intake and apparent digestibility were not modified with the treatments. Dry matter intake (DMI) was 97.43g/day/kgW0.75 and DMDA was 66.12%. The intake of neutral detergent fiber was 47.2g/day/kgW0.75. Smaller particle size (2mm) had lower times of rumination (214.58minutes/day) and chewing activity (360.41minutes/day). Animals spent 423.48minutes/day/kg of intake of neutral detergent fiber in rumination and 676.19 minutes/day/kg of intake of neutral detergent fiber in chewing activity. The times spent with rumination and the total chewing activity in sheep decreased as the particle size of the forage was reduced. The particle size of the forage and frequency of feeding did not affect the intake and apparent digestibility in sheep.
Acesso aberto (Open Access)
Production and chemical composition of three sugarcane cultivars grown under Af climate conditions
(Universidade Federal do Pará, 2015-11) MIRANDA, Augusto Sousa; DOMINGUES, Felipe Nogueira; GODOY, Bruno Spacek; OAIGEN, Ricardo Pedroso; RÊGO, Aníbal Coutinho do; FATURI, Cristian; CORRÊA, Renato Pinto; SILVA, Flavio da
The objective of this study was to evaluate the chemical composition and yield of three sugarcane cultivars grown under Af climate conditions. Three sugarcane cultivars were examined, namely, IACSP93-6006, RB83-5486, and SP79-1011, in a randomized block design with three treatments, four blocks, and two replicates per block; means were compared using Tukey’s test at 5% probability level. Significant differences were observed for dry matter, ether extract, crude protein, acid detergent fiber, lignin (LIG), cellulose, neutral detergent fiber corrected for ash and protein (NDFap), total carbohydrates, carbohydrate fractions B2 and C, and dry matter yield. The fiber components (NDFap, LIG, and fraction C) displayed low values. The cultivars produced high dry matter yields, especially IACSP93-6006 and SP79-1011. There were no differences among sucrose (Pol) values and the NDF/Pol ratios. The low Pol values indicate that sugarcane grown under Af climate conditions does not produce high levels of sucrose. The three sugarcane cultivars grown under the Af climate conditions produce high yields of DM/ha but low concentrations of the fiber components, as well as low Pol concentrations.