Degradability
Mostrando 13-24 de 115 artigos, teses e dissertações.
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13. Hydrolytic and Thermal Degradation of PCL and PCL/Bentonite Compounds
Poly(Ɛ-caprolactone)/montmorillonite (PCL/MMT) and Poly(Ɛ-caprolactone)/organo-modified montmorillonite (PCL/OMMT) compounds at 3% w/w clay content were prepared by melting mixing. The effect of MMT and OMMT on the degradability of PCL injected specimens was investigated in vacuum at 40oC for up to 45 days and in aqueous medium at 40oC for up to 45 days. S
Mat. Res.. Publicado em: 08/04/2016
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14. Investigations on Preparation and Characterization of Certain Copolyesters
In this paper, we report on the synthesis and characterization of high molecular weight copolyesters from Terephthalic acid, 1, 4 butane diol and Succinic acid /Sebacic acid through a two step process of melt polycondensation using titanium tetra butoxide as catalyst. The synthesized aromatic-aliphatic random copolyesters were characterized by means of FTIR,
Mat. Res.. Publicado em: 26/02/2016
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15. Nutritional evaluation of elephant-grass silages with different levels of by-products from the cashew juice industry
ABSTRACT This study was conducted to evaluate the intake, apparent digestibility (AD), and degradability in situ of elephant grass (Pennisetum purpureum Schum) silages containing 0, 35.0, 70.0, 105.0, and 140.0 g kg-1 by-product from dried cashew apple (DCBP) (as fed basis). A completely randomized design with four replicates was adopted. For the study of de
R. Bras. Zootec.. Publicado em: 2015-12
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16. 2,6-Diaminopimelic acid (DAPA) in microbial protein quantification of heifers fed different forage sources
The objective of this study was to evaluate the flow of nitrogenous compounds, protein degradability, rumen degradation of total carbohydrate and organic matter and microbial efficiency in heifers subjected to diets containing corn silage, sugarcane or Tifton. For this purpose, the 2,6-diaminopimelic acid (DAPA) technique was adopted and analytical procedure
R. Bras. Zootec.. Publicado em: 2015-05
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17. Cinética ruminal de dietas contendo farelo de mamona destoxificado
The kinetics of gas production and in vitro ruminal degradation of diets contained replacement of soybean meal (SBM) by detoxicated castorbean meal (DCBM) (0, 15, 30 and 45% of substitution) were evaluated in this study. Values of gas production of non-fibrous carbohydrates (Vf1), fibrous carbohydrates (Vf2) and total carbohydrates (V) showed quadratic behav
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2015-04
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18. Síntesis y propiedades de filmes basados en quitosano/lactosuero
Chitosan is a natural polymer derived from deacetylation of chitin, which exhibits properties such as biocompatibility, biodegradability and may form films, being applied in the food industry and medicine. Degradable chitosan films were prepared from chitosan extracted from shrimp shells and whey, using different concentrations of chitosan solution (1, 1.5,
Polímeros. Publicado em: 2015-02
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19. Different true-protein sources do not modify the metabolism of crossbred Bos taurus × Bos indicus growing heifers
The present study was conducted to investigate the effect of alternative true-protein sources to soybean meal, with different ruminal degradability, using a sugarcane-based diet, on nutrient digestion, ruminal fermentation, efficiency of microbial protein synthesis and passage rate in prepubertal dairy heifers. Eight crossbred rumen- and duodenum-cannulated
R. Bras. Zootec.. Publicado em: 2015-02
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20. Slow-release urea in supplement fed to beef steers
Replacing regular urea (RU) by slow-release urea (SRU) at two levels of non-protein nitrogen (NPN) in concentrate, offered with low-quality roughage, was evaluated in beef steers on dry matter intake (DMI), ruminal fermentation parameters, plasma urea nitrogen (PUN), total tract apparent digestibility of diets and in situ degradability of nitrogen sources. E
Braz. arch. biol. technol.. Publicado em: 2015-02
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21. Methane production of two roughage and total mixed ration as influenced by cellulase and xylanase enzyme addition
In recent decades supplementation of animal feeds with exogenous fibrolytic enzymes has substantially improved digestibility and animal performance. However, information related to associated methane production is limited and inconsistent. This study evaluated the effect of cellulase and xylanase enzymes on in vitro methane production of Eragrostis curvula h
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-02
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22. Rumen degradation and passage kinetics of silage made from different corn hybrids
The objective of the present study was to evaluate the parameters related to the digestion of the fiber from silages of four corn hybrids (BX1280, SHS4070, 2B433, and DKB390) developed for silage production. Four rumen-cannulated castrated Holstein × Zebu crossbred cattle with approximate initial weight of 400 kg were distributed in a Latin square design. T
R. Bras. Zootec.. Publicado em: 2014-10
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23. Fractionation of carbohydrates and protein and rumen degradation kinetic parameters of brachiaria grass silage enriched with rice bran
This experiment was conducted to evaluate the protein and carbohydrate fractions, and to estimate the in situ rumen degradation kinetic parameters of Brachiaria decumbens grass silage with inclusion of rice bran. Five rice bran inclusion levels were tested: 0, 10, 20, 30 and 40% of the natural matter, distributed into a completely randomized design with five
R. Bras. Zootec.. Publicado em: 2014-03
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24. Particle passage kinetics and neutral detergent fiber degradability of silage of pineapple waste (aerial parts) under different packing densities
The objective of this study was to determine the kinetics of in situ degradability parameters of the dry matter (DM) and neutral detergent fiber (NDF) and the passage of materials originating from the ensilage of the waste from pineapple cultivation (aerial parts). The four treatments utilized were silage of pineapple waste compacted at 600, 700, 900 and 100
R. Bras. Zootec.. Publicado em: 2014-01