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      In situ ruminal degradability of the dry matter of henequen (Agave fourcroydes) bagasse. Technical note Translated title: Degradabilidad ruminal in situ de la materia seca del bagazo de henequén (Agave fourcroydes). Nota técnica

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          Abstract

          Abstract To characterize the incubation kinetics and determine the in situ ruminal degradability parameters of the dry matter of the henequen (Agave fourcroydes) bagasse, a cow from Dexter breed, with 350 kg of live weight, fistulated in rumen was used. It was fed with concentrate (6 g kg LW-1) and free access to forage, water and mineral salts. A total of 24 dacron bags were used, incubated in rumen by quadruplicate (72, 48, 24, 12, 4, 0 h). The maximum degradation was reached in the last incubation hours (48 h: 63.39 % sv 72h: 63.62 %, P <0.0001), with values for a, b, c and ED k = 0.02, 0.04 of: 28 %, 36%, 0.06 % h-1, 55 % and 49 %, respectively. It is concluded that the variations presented during incubation kinetics and in situ rumen degradation parameters of dry matter confirm the possibility of using henequen (Agave fourcroydes) bagasse in ruminant feeding. However, studies on the degradability of the rest of the nutrients, characterization of ruminal fermentation and microbial populations are required.

          Translated abstract

          Resumen Para caracterizar la cinética de incubación y determinar los parámetros de degradabilidad ruminal in situ de la materia seca del bagazo de henequén (Agave fourcroydes) se utilizó una vaca de la raza Dexter, con 350 kg de peso vivo, fistulada en rumen. Se alimentó con concentrado (6 g kg PV-1) y acceso al forraje, agua y sales minerales a libre voluntad. Se utilizaron 24 bolsas de dacrón, incubadas en rumen por cuatriplicado (72, 48, 24, 12, 4, 0 h). La máxima degradación se alcanzó en las últimas horas de incubación (48 h: 63.39 % vs 72h: 63.62 %, P < 0.0001), con valores para a, b, c y DE k=0.02, 0.04 de: 28 %, 36 %, 0.06 % h-1, 55 % y 49 %, respectivamente. Se concluye que las variaciones presentadas durante la cinética de incubación y parámetros de degradación ruminal in situ de la materia seca confirman la posibilidad de utilización del bagazo de henequén (Agave fourcroydes) en la alimentación de rumiantes. Sin embargo, se requiere realizar estudios acerca de la degradabilidad del resto de los nutrientes, caracterización de la fermentación ruminal y las poblaciones microbianas.

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          A revised model for the estimation of protein degradability in rumen

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            The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage

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              Influencia de la edad de corte del pasto morado (Pennisetum purpureum) en la producción y digestibilidad in vitro de la materia seca

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                Author and article information

                Journal
                cjas
                Cuban Journal of Agricultural Science
                Cuban J. Agric. Sci.
                Editorial del Instituto de Ciencia Animal (Mayabeque, , Cuba )
                0864-0408
                2079-3480
                March 2018
                : 52
                : 1
                : 19-24
                Affiliations
                [2] orgnameUniversidad Central de La Villas Cuba
                [1] San José de las Lajas Mayabeque orgnameInstituto de Ciencia Animal Cuba
                Article
                S2079-34802018000100019 S2079-3480(18)05200100019
                21ccdbe6-f537-4c1d-a48d-1d36bd6eedf5

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 25 April 2018
                : 16 November 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 21, Pages: 6
                Product

                SciELO Cuba

                Categories
                ANIMAL SCIENCE

                dinámica,fermentación ruminal,rumen,dynamics,ruminal fermentation

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