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      Desarrollo de novillas BON x Cebú en un silvopastoril de Tithonia diversifolia, en Antioquia, Colombia Translated title: Performance of heifers BON x Cebu in a silvopastoral of Tithonia diversifolia, in Antioquia, Colombia Translated title: Desempenho de novilhas BON x Cebu em um silvipastoril de Tithonia diversifolia em Antioquia, Colombia

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          Abstract

          RESUMEN La producción bovina en Colombia se caracteriza por presentar bajos indicadores de producción debido a la baja calidad de las pasturas y el manejo extensivo de las praderas. El objetivo de esta investigación fue evaluar el efecto de un silvopastoril de Tithonia diversifolia y Urochloa brizantha cv. Toledo asociado a Urochloa humidicola, sobre los parámetros productivos de novillas BON x Cebú. Se distribuyeron de manera aleatorizada, 24 novillas BON x Cebú de 15,81 ± 2,05 meses y 183,95 ± 33,45 kg de peso, en dos tratamientos, un monocultivo de Urochloa brizantha cv. Toledo y Urochloa humidicola, y el sistema silvopastoril de Tithonia diversifolia. Se estimó la producción de materia seca y el consumo de materia seca en cada tratamiento y se realizó evaluación del peso, ganancia de peso, altura a la cruz, perímetro torácico y longitud corporal de los animales, durante dos pastoreos. Se hallaron diferencias significativas a favor del sistema silvopastoril para la producción de materia seca, la ganancia de peso, el peso, y la altura a la cruz (p ≤ 0,05). Se concluyó que los sistemas silvopastoriles son una alternativa para mejorar la oferta forrajera y, por consiguiente, el desarrollo productivo de novillas.

          Translated abstract

          ABSTRACT Bovine production in Colombia is characterized for its low production indicators, because pastures are of low quality and the grasslands has an extensive management. The objective of this research was to evaluate the effect of a silvopastoral with Tithonia diversifolia, and Urochloa brizantha cv. Toledo associated with Urochloa humidicola, on the productive parameters of BON x Zebu heifers. 24 heifers BON x Zebu with an average age of 15,81 ± 2,05 months and 183,95 ± 33,45 kg of weight, were distributed randomly in two treatments, a monoculture with Urochloa brizantha cv. Toledo associated to Urochloa humidicola, and, the silvopastoral with Tithonia diversifolia. The dry matter production and the consumption was estimated in both treatments. Also, the weight, weight gain, body height, heart girth and body length were evaluated in the animals during two rotations. Significant differences were found in the silvopastoral system for the production of dry matter, weight gain, the weight, and body height (p ≤ 0,05). It was concluded that silvopastoral systems are an alternative to improve the forage offer and the performance of heifers.

          Translated abstract

          RESUMO A produção bovina na Colômbia é caracterizada por baixos indicadores de produção, devido à baixa qualidade das pastagens e ao amplo manejo das pastagens. O objetivo deste trabalho foi avaliar o efeito de um sistema silvipastoril de Tithonia diversifolia, Urochloa brizantha cv. Toledo consorciado com Urochloa humidicola, nas desempenho de novilhas BON x Zebu. 24 novilhas BON x Zebu com idade média de 15,81 ± 2,05 meses e 183,95 ± 33,45 kg de peso, em dois tratamentos, em monocultivo de Urochloa brizantha cv. Toledo e Urochloa humidicola, e o silvipastoril com Tithonia diversifolia. A massa de matéria seca e o consumo de matéria seca foi estimada, Da mesma forma, avaliação do peso, ganho de peso, altura ao garrote, perímetro torácico e comprimento do corpo em cada tratamento, durante duas rotações. Diferenças significativas foram encontradas a favor do sistema silvipastoril para a massa de matéria seca, o ganho de peso, o peso e a altura ao garrote apresentaram diferenças significativas (p ≤ 0,05). Concluiu-se os sistemas silvipastoris são uma alternativa para melhorar a produção de forragem e, consequentemente, o desempenho de novilhas.

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          Calidad nutricional de Tithonia diversifolia Hemsl. A Gray bajo tres sistemas de siembra en el trópico alto

          ResumenCalidad nutricional de Tithonia diversifolia Hemsl. A Gray bajo tres sistemas de siembra en el trópico alto . El objetivo de este trabajo fue comparar la composición bromatológica y el contenido de taninos del forraje de botón de oro (Tithonia diversifolia) obtenido bajo tres sistemas de siembra. El trabajo se desarrolló en la finca Santa Martha, en el municipio de Guarne (Antioquia-Colombia), ubicada a 2453 msnm, entre octubre de 2013 y julio de 2014. A los 56 días del corte de uniformización, se analizaron los contenidos de materia seca (12,74%, 12,90%, 12,45%), proteína cruda (14,1%, 12,76%, 13,31%), cenizas (16,19%, 15,50%, 16,00), calcio (2,86%, 3,05%, 2,93%), fósforo (0,27%, 0,25%, 0,27%), fibra detergente neutro (53,81%, 50,21%, 52,80%), fibra detergente ácido (48,18%, 48,87%, 48,47%), carbohidratos totales no estructurales (8,50%, 8,35%, 7,82%), taninos totales (0,08%, 0,11%, 0,08%) y fenoles totales (0,20%, 0,29%, 0,24%), para plantas completas cosechadas en parcelas establecidas a partir de estacas, semilla sexual manejada in vitro y semilla sexual en almácigos, respectivamente; solo se encontraron diferencias para fenoles totales (p≤0,05). El método de establecimiento no incidió sobre el contenido de nutrientes bajo las condiciones en que se realizó este estudio, y al contenido de metabolitos secundarios no ser alto, se espera que no influyan sobre la palatabilidad, el consumo ni la digestibilidad de la materia seca.
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            Contribution of intensive silvopastoral systems to animal performance and to adaptation and mitigation of climate change

            According to FAO, world demand for animal products will double in the first half of this century as a result of increasing population and economic growth. During the same period, major changes are expected in world climate. Food security remains one of the highest priority issues in developing Latin American countries, a region where livestock production plays a fundamental role. Agricultural activities seriously threaten natural resources; therefore, it is necessary to ensure that livestock production contributes to satisfy the demand for animal products in a sustainable manner. Intensive silvopastoral systems (ISS) are becoming the technology of choice for Colombian and regional livestock sectors because it can help reduce the seasonality of plants and animal production, and therefore contribute to mitigate and adapt to the effects of climate change. We have recently gained knowledge on the nutritional and productive attributes of these systems. However, in recent years, the low carbon approach acquired importance in animal agriculture, which seeks to primarily promote the adoption of programs running parallel activities aimed at adapting to and mitigating climate change. This review outlines projections on the effects of climate change on the livestock industry, presents concepts on Greenhouse Gas flow and highlights evidence in support of the conclusion that ISS is an interesting option to allow the livestock sector in the region to adapt to climate change and to mitigate some of its effects. The adoption of ISS may help to remove up to 26.6 tons of CO2 eq/Ha/yr from the atmosphere.
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              Factors affecting puberty in replacement beef heifers

              G.A. Perry (2016)
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                Author and article information

                Journal
                bsaa
                Biotecnología en el Sector Agropecuario y Agroindustrial
                Rev.Bio.Agro
                Taller Editorial Universidad del Cauca (Popayán, Cauca, Colombia )
                1692-3561
                December 2020
                : 18
                : 2
                : 48-59
                Affiliations
                [2] Medellín Antioquía orgnameUniversidad de Antioquia orgdiv1Facultad de Ciencias Agrarias orgdiv2Grupo de Investigación en Ciencias Agrarias (GRICA) Colombia
                [3] Medellín Antioquía orgnameUniversidad de Antioquia orgdiv1Facultad de Ciencias Agrarias orgdiv2Grupo de Investigación en Ciencias Agrarias (GRICA) Colombia
                [1] Medellín Antioquía orgnameUniversidad de Antioquia orgdiv1Facultad de Ciencias Agrarias orgdiv2Grupo de Investigación en Ciencias Agrarias (GRICA) Colombia
                Article
                S1692-35612020000200048 S1692-3561(20)01800200048
                10.18684/bsaa(18)48-59
                dc0d3d99-ddba-4036-b903-2574ec20bd9b

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

                History
                : 04 May 2020
                : 11 November 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 35, Pages: 12
                Product

                SciELO Colombia

                Categories
                Artículos de Investigación

                Sustainability,Trópico,Sustentabilidade,Produção animal,Arbustos forrageiros,Sostenibilidad,Producción ganadera,Arbustivas forrajeras,Tropics,Livestock production,Forage shrubs

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