ANALISIS PROXIMAL DE WEENDE PDF

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In order to improve the agroalimentary chain and to diminish the extensive use of land to grow crops for cattle raising, there is a need for greater availability of forages with adequate nutritional value.

Biotechnological processes to improve grass by fermentation with basidiomycetes, are an alternative. However, it is difficult to determine the changes that take place in forage with the fermentation process.

There are many reports on techniques to evaluate forage components. Of them, the detergent system is the most frequently used but more modern methods are also available. Accesibility and costs of the latter are limiting factors for many laboratories and some of the newer methods have not yet been officially approved.

We describe and discuss the detergent system to evaluate the nutritional value of foods for ruminants, and the difficulties of its interpretation. In the analysis of forages exposed to biodegradation processes, we concluded that values of lignin and cellulose van Soest system found in blanks and specimens do not correspond to the real contents of these substances in the biodegraded specimen. Keywords: Fiber, food analysis, van Soest scheme, Weende system of analysis.

El resto de los componentes no tienen especial importancia nutricional y no representan cuantitativamente cifras elevadas 6,7. La pared primaria -P- de un tejido de una planta se observa en la figura 1.

Slavin J. Jung Hans-Joachim G. Casler M. D, Jung H-Jg. Lund P, Weisbjerg TH. Animal Feed Sciences and Technology. Effect of the proportions of neutral detergent fibre and starch, and their degradation rates, on in vitro ruminal fermentation.

Machado O. Rojas E. En: Rojas Hidalgo E ed. Mertens DR. J AOAC ; 85 6 Gadd GM. Fungi in Bioremediation. Cambridge: British Mycological Society; Biochem J ; 2 : Kirk TK, Cullen D.

Forest Products Chemistry. Dietary Fiber Analysis and Applications. Hatakka A. Biodegradation of lignin. Biopolymers, vol. Weinheim: Wiley-VCH; Brunow G. Methods to Reveal the Structure of Lignin. Ralph J. Lignin Structure: Recent Developments. Van Soest PJ. Animal Feed Science and Technology ; : Henneberg W, Stohmann F. Ueber das Erhaltungsfutter volljahrigen Rindviehs. Use of Detergents in the Analysis of Fibrous Feeds. J Assoc Off Anal Chem a; J Assoc Off Anal Chem b; J Assoc Off Ana.

Washington D. Systems of Analysis for Evaluating Fibrous Feeds. Standardization of Analytical Methodology in Feeds. Ottawa: International Research Development Center; J Dairy Sci ; Use of Detergents in the Analysis of Fibrous Feed. New York: Marcel Dekker; New York: Cornell University; New York: Plenum Press; Bodgan AV.

Pastos y forrajes. La Habana, Cuba; J Sci Food Agric ; 36 10 UV absorption microspectrophotometry and digestibility of cell types of Bermuda grass internodes at different stages of maturity.

J Sci Food Agric ; 59 4 Use of Fungi Biodegradation. En: Hurst Ch J. Manual of Environmental Microbiology.

Washington: ASM Press; Appl Environ Microbiol ; 61 4 : Blanchette RA. Appl Environ Microbiol ; 48 3 : Solubilization and mineralization of lignin by white rot fungi. Appl Environ Microbiol ; 58 10 Eriksson KE. Microbial Delignification-basics, Potentials and Applications. FEMS Symp ; Microbial and enzymatic degradation of wood and wood components.

New York: Springer-Verlag; Degradation of the Lignocellulose Complex in Wood. Can J Botany ; 73 1 : SS J Assoc Off Anal Chem ; J Assoc Off Anal Chem ; 78 4 J Sci Food Agric ; 31 7 : J Sci Food Agric ; 65 1 : Morrison IM.

J Sci Food Agric ; 23 4 : Washington, D. Handbook no. Mycologia ; Holzforschung ; Wood Sci Tech ; 27 4 : J Anal Appl Pyrol ; 21 1,2 : Holz als Roh- und Werkstoff ; Holz als Roh- und Werkstoff ; 50 9 : Bioresource Technology ; 74 3 : Holzforschung a; Enz Microb Technol ; 17 3 : Daniel G.

Anagnost SE. Light Microscopic Diagnosis of Wood Decay. IAWA J ; 19 2 : Animal Feed Science and Technology ; 1,2

PSICOLOGIA COGNITIVA STERNBERG PDF

AnĂ¡lisis proximal (Weende)

Determination of the botanical and chemical composition of the pasture diet selected by llamas Lama glama during the rainy season in the community of Pujrata. Llamas Lama glama take advantage of poor natural forage grasses and others due to their efficient digestive physiology that is adapted for this type of forage. The problem now faced is the gradual exhaustion of the native grassland low phytomass production. The vegetation does not cover the dry matter consumption requirements, and less so the nutrient requirements, of these animals. Because of this there is the necessity of determining the botanical composition, pasture selection by plant parts, and chemical composition of what llamas ingest in order to improve these animals' nutrition in the pasture. This study occurred at the Larqa Uma ranch, located on Cachaca hill, north of the community of Pujrata, Santiago de Callapa municipality, Pacajes province, department of La Paz.

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Analisis Proximal De Weende Y Van Soest

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