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DIGITAL.CSIC
Article . 2012 . Peer-reviewed
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Rumen degradation kinetics of alfalfa hay, maize silage and wheat straw treated with fibrolytic enzymes

Authors: Jalilvand, G.; Naserian, A.; Kebreab, E.; Odongo, N. E.; Valizadeh, R.; Eftekhar Shahrodi, F.; López, Secundino;

Rumen degradation kinetics of alfalfa hay, maize silage and wheat straw treated with fibrolytic enzymes

Abstract

[ES] Se estudió la cinética de la desaparición de heno de alfalfa, ensilado de maíz y paja de trigo tratados con tres mezclas enzimáticas. El objetivo fue evaluar tres productos enzimáticos comerciales, empleados en nutrición avícola, como aditivos para los rumiantes. Los productos fueron Cellupract AS 130, Natuzyme y Endofeed DC, preparaciones comerciales con diversas actividades enzimáticas para degradar los polisacáridos estructurales de la pared celular (principalmente ß-glucanasa, xilanasa y celulasa). Los forrajes, tratados o no (control) con enzimas, se pesaron en bolsas de nailon y fueron incubados por duplicado durante 4, 8, 16, 24, 48, 72 y 96 h en el rumen de dos ovejas Blochi provistas de una fístula ruminal. Se analizó el efecto de la adición de las preparaciones enzimáticas sobre las características de la degradación de la materia seca (DM) y proteína bruta (CP). Se observaron diferencias (p<0,01) entre forrajes en la cinética de degradación ruminal de la DM y CP. Para la DM, el tratamiento enzimático incrementó (p<0,01) la fracción a, rápidamente soluble, la fracción b, potencialmente degradable y la degradabilidad efectiva ED. El Cellupract AS 130 afectó a la degradabilidad de la DM en mayor medida (p<0,01) que las otras enzimas y aumentó (p<0,05) la tasa fraccional de degradación (parámetro c) y la ED de la proteína del forraje comparado con el tratamiento control. Las otras enzimas provocaron un efecto menos manifiesto, y el aumento observado en algunos parámetros de degradación ruminal sólo fue significativo en algunos casos con Endofeed. Las mezclas de enzimas fibrolíticas, particularmente Cellupract, podrían ser empleadas como suplementos alimenticios para rumiantes para mejorar la digestibilidad del forraje.

[EN] In situ disappearance kinetics of alfalfa hay, maize silage and wheat straw treated with three enzyme mixtures were studied. The objective was to evaluate three commercial enzyme products, mainly used in poultry nutrition, for ruminants. The products were Cellupract AS 130, Natuzyme and Endofeed DC, mixtures of different enzyme activities to break down non-starch polysaccharides present in the plant cell wall (mainly ß-glucanase, xylanase and cellulase). Nylon bags containing forage, treated and control, were incubated in duplicate for 4, 8, 16, 24, 48, 72 and 96 h in the rumen of two Blochi ewes fitted with rumen fistula. All treatment and control forage samples were evaluated in terms of their dry matter (DM) and crude protein (CP) degradation characteristics. Forages showed different (p<0.01) DM and CP rumen degradation kinetics. For DM, enzyme treatment significantly (p<0.01) increased the rapidly soluble fraction a, the potentially degradable fraction b, and effective degradability (ED). Cellupract AS 130 affected DM degradability to a greater extent (p<0.01) than the other enzymes, and increased (p<0.05) fractional degradation rate (parameter c) and ED of forage protein compared with the control forages. The other enzymes had only a slight effect, and the increase in some degradation parameters compared with control was significant only in a few cases with Endofeed. Fibrolytic enzyme mixtures, in particular Cellupract, could be used as ruminant feed supplements to enhance forage digestibility.

10 páginas, 5 tablas.

Peer reviewed

Country
Spain
Related Organizations
Keywords

Degradability, Rumen, Sheep, Forage, Ovino, Degradabilidad, Forrajes

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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