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      Apparent digestibility of nutrients in fattening pigs (Largewhite x Duroc x Pietrain), fed with taro (Colocasia esculenta (L.) Schott) meal. Technical note Translated title: Digestibilidad aparente de nutrientes en cerdos de ceba (Largewhite x Duroc x Pietrain), alimentados con harina de taro (Colocasia esculenta (L.) Schott). Nota técnica

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          Abstract

          Abstract In order to determine the apparent digestibility of nutrients from taro (Colocasia esculenta (L.) Schott) tubers meal in fattening pigs, three castrated male pigs were used, product of the commercial cross (Largewhite x Duroc x Pietrain), with average live weight of 68 ± 2 kg. The animals were distributed in three treatments: T1 (control diet based on corn and soybean), T2 and T3 (inclusion of 20 and 40 % of taro meal in the diet respectively), according to the Latin square design. The mean comparison was performed with the Duncan test (P≤0.05). There was no significant difference (P> 0.05) in the apparent digestibility coefficients of the dry matter (T1 86.70, T2 88.67, T3 88.77 %), organic matter (T1 90.79, 91.80, 89.90%) and crude protein (T1 92.46; T2 91.96 %; T3 91.89 %). The rectal digestibility of dry matter, organic matter and crude protein showed high utilization rates, when including 20 and 40% of taro tuberous meal in the diet, which guarantees a food of adequate nutritional characteristics for fattening pigs.

          Translated abstract

          Resumen Para determinar la digestibilidad aparente de nutrientes de la harina de tubérculos de taro (Colocasia esculenta (L.) Schott) en cerdos de ceba, se utilizaron tres cerdos machos castrados, producto del cruce comercial (Largewhite x Duroc x Pietrain), con peso vivo promedio de 68 ± 2 kg. Los animales se distribuyeron en tres tratamientos: T1 (dieta control a base de maíz y soya), T2 y T3 (inclusión de 20 y 40 % de harina de taro en la dieta respectivamente), según diseño cuadrado latino. La comparación de medias se realizó con la prueba de Duncan (P≤0.05). No hubo diferencia significativa (P > 0.05) en los coeficientes de digestibilidad aparente de la materia seca (T1 86.70; T2 88.67; T3 88.77 %), materia orgánica (T1 90.79; 91.80; 89.90 %) y proteína bruta (T1 92.46; T2 91.96 %; T3 91.89 %). La digestibilidad rectal de la materia seca, materia orgánica y proteína bruta presentó altos índices de aprovechamiento, al incluir 20 y 40 % de harina de tubérculos de taro en la dieta, lo que garantiza un alimento de adecuadas características nutritivas para cerdos en ceba.

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          Techniques for evaluating digestibility of energy, amino acids, phosphorus, and calcium in feed ingredients for pigs

          Sound feed formulation is dependent upon precise evaluation of energy and nutrients values in feed ingredients. Hence the methodology to determine the digestibility of energy and nutrients in feedstuffs should be chosen carefully before conducting experiments. The direct and difference procedures are widely used to determine the digestibility of energy and nutrients in feedstuffs. The direct procedure is normally considered when the test feedstuff can be formulated as the sole source of the component of interest in the test diet. However, in some cases where test ingredients can only be formulated to replace a portion of the basal diet to provide the component of interest, the difference procedure can be applied to get equally robust values. Based on components of interest, ileal digesta or feces can be collected, and different sample collection processes can be used. For example, for amino acids (AA), to avoid the interference of fermentation in the hind gut, ileal digesta samples are collected to determine the ileal digestibility and simple T-cannula and index method are commonly used techniques for AA digestibility analysis. For energy, phosphorus, and calcium, normally fecal samples will be collected to determine the total tract digestibility, and therefore the total collection method is recommended to obtain more accurate estimates. Concerns with the use of apparent digestibility values include different estimated values from different inclusion level and non-additivity in mixtures of feed ingredients. These concerns can be overcome by using standardized digestibility, or true digestibility, by correcting endogenous losses of components from apparent digestibility values. In this review, methodologies used to determine energy and nutrients digestibility in pigs are discussed. It is suggested that the methodology should be carefully selected based on the component of interest, feed ingredients, and available experimental facilities.
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            Yuca ensilada como fuente de energía para cerdos en crecimiento

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              Chemical composition and in vitro digestibility of silages of taro (Colocasia esculenta (L.) Schott) tubers for feeding pigs

              To assess chemical composition and in vitro digestibility of silages of taro tubers (Colocasia esculenta (L.) Schott), for feeding pigs, four silages with waste tubers were carried out. A completely randomized design with a 4x6 factorial arrangement to analyze the chemical composition was applied. Natural yogurt (-1NY), whey (-2W), whey with 5%of molasses (-3WM5) and whey with 10% of molasses (-4WM10) were evaluated as silage components. The silages time were 0, 15, 30, 60, 90 and 180 days. The in vitro digestibility of DM and OM with 15d of silages elaboration was investigated by means of simple classification design. The interactions treatments per day were significant (P < 0.05).The silage four in the 180th day show higher DM content (33.61%).The highest CP(N x 6.25) concentration(8.83%) was evidenced in silage two, in the 90th day. The lowest CF was determined in silage two in the 0 (2.85) and 60th (2.84) days. The GE was high in silage one in the 0 day (4.40 kcal g DM-1).The highest in vitro digestibility coefficient of DM (74.65 %) and OM (76.76 %) was found in silage two. The conservation of taro tubers, between 0 and 180 d, by means of the addition of variables levels of natural yogurt, whey and sugar cane molasses, create different products with good DM, CP, GE content and low CF concentration, capable to be used in feeding pigs
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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
                June 2018
                : 52
                : 2
                : 181-186
                Affiliations
                [1] Napo Pastaza orgnameUniversidad Estatal Amazónica Ecuador
                Article
                S2079-34802018000200181 S2079-3480(18)05200200181
                13d0d014-89fc-405d-9332-7a81c558b91b

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

                History
                : 23 March 2018
                : 06 June 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 23, Pages: 6
                Product

                SciELO Cuba

                Categories
                ANIMAL SCIENCE

                use of nutrients,alimentación porcina,taro tubers,secado,drying,tubérculos de taro,pig feeding,aprovechamiento de nutrientes

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