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Redalyc.Resúmenes De Presentaciones Orales Revista Facultad Nacional de Agronomía - Medellín ISSN: 0304-2847 [email protected] Universidad Nacional de Colombia Colombia Resúmenes de Presentaciones Orales Revista Facultad Nacional de Agronomía - Medellín, vol. 62, núm. 1, 2009, pp. 25-91 Universidad Nacional de Colombia Medellín, Colombia Disponible en: http://www.redalyc.org/articulo.oa?id=179959366002 Cómo citar el artículo Número completo Sistema de Información Científica Más información del artículo Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Página de la revista en redalyc.org Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Primer Simposio en Producción Animal - ResÚmenes de Presentaciones Orales NUTRICIÓN con la FDAiiv fue de 65,1 ± 7,77% (P>O,052). El óxido de cromo sobreestimó las heces producidas 1. ESTIMACIÓN DEL CONSUMO DE MATERIA en 26,8% comparado con la cantidad de heces SECA EN VACAS HOLSTEIN BAlO recolectadas con los arneses (P<O,OOOl), indicando 1 una recuperación incompleta de marcador, la cual PASTORE0 , Héctor Jairo Correa Cardon;i,s; Martha Lucia Pabón RestreptT's; Juan E. fue estimada en 79,4 ± 8,9%. El CMS promedio Carulla Fornaguera"'S estimada con los marcadores fue 18,3 ± 4,12 kg.vaca-1.día-1 la cual se encuentra dentro de los 1 Trabajo financiado por COLClENCIAS (Proyecto 1101-405-20172 valores reportados previamente en Antioquia y la de 2007) Sabana de Bogotá. 2 Profesor Asociado. Departamento de Producción Animal. Universidad Nacional de Colombia, Sede Medel/ín. E-mail: [email protected] Palabras claves: Arneses, método de 3 Profesora Titular. Departamento de Química. Facultad de marcadores, nutrición, rumiantes. Ciencias. UniverSIdad Nacional de Colombia, Sede Bogotá. E-mail: [email protected] 4 Profesor Asociado. Departamento de Producción Animal. DRY MATTER INTAKE IN HOLSTEIN COWS Facultad de Medicina Veterinaria y de Zootecnia. Universidad UNDER GRAZING Nacional de Colombia, Sede Bogotá. E-mail: jecarullaf@unal. edu.co 5 Grupo de Investigación en Nutrición Animal. Facultad de The estimation of the dry matter intake in Medicina Veterinaria y de Zootecnia. UniverSidad Nacional de bovines by grazing is basic to take out nutritional Colombia, Sede Bogotá studies in these animals. With the purpose of estimating the dry matter intake (DMI) in lactating La estimación del consumo de materia seca en Holstein cows under grazing conditions, two tests bovinos bajo pastoreo es fundamental para were carried out each one with six cows, using an adelantar estudios nutricionales en estos internal marker to estímate the dry matter animales. Con la finalidad de estimar el consumo digestibility (DMD) and an external marker to de materia seca (CMS) en vacas Holstein lactantes estimate the production of faeces (F). To estimate bajo condiciones de pastoreo, se realizaron dos DMD the indigerible acid detergent fiber (iADF) ensayos con seis vacas cada uno, utilizando un was used which was recovered in residues of marcador interno para estimar la digestibilidad de grass, food supplements and faeces samples after la materia seca (DMS) y un marcador externo a rumen incubatíon of 144 h (ísiADF). This para estimar la producción de heces (H). Para technique was compared with the measurement estimar la DMS se utilizó la fibra en detergente of iADF in the residues of an in vitro incubation ácido indigerible (FDAi) recuperada en los (iv1FDA) during 144 h of the same samples. To residuos de una incubación ruminal in sítu (FDAiís) calculate F, 15 9 of chromic oxide (Cr) were given durante 144 horas de muestras de las heces to each cow during each milking for 14 days, (FDAih), los forrajes (FDAif) y los suplementos which were mixed with the food supplements and alimenticios (FDAis). Esta técnica fue comparada its concentration was determined in the faeces con la medición de la FDAi en los residuos de una recovered in the last two days of the supply incubación in vitro (FDAii0 durante 144 horas de periodo This technique was compared wíth the las mismas muestras. Para calcular las H, a cada total collection of faeces using harnesses made vaca se le suministraron 15 9 de óxido de cromo specifically for this purpose. The DMD estimated (Cr) en cada ordeño durante 14 días, los cuales with isiADF was 70.3 ± 4.48%, while the one fueron mezclados con el suplemento alimenticio y estimated with iv1ADF was 65.1 ± 7.77% su concentración fue determinada en las heces (P>0.052). The chromic oxide overestimated the F recuperadas durante los dos últimos días del in 26.8% compared with the amount of F periodo de suministro. Esta técnica fue comparada collected with harnesses (P<O.OOOl) suggesting con la recolección total de heces utilizando an incomplete recovery of the marker, which was arneses fabricados para este fin. La DMS estimada estimated in 79.4 ± 8.9%. The average DMI con la FDAils fue de 70,3 ± 4,48% mientras que estimated with the markers was 18.3 ± 4.12 Revista Facultad Nacional de Agronomía, Medellín (2.009), 62. (Suplemento, 1),52.5-91 25 Primer Simposio en Producción Animal - Resúmenes dE? Presentaciones Orales Primer Simposio en Producción Animal - Resúmenes de PresentaCiones Orales 1 1 kg.cow- dai which is between the values reported ruminal. Se estableció y utilizó la técnica del túnel ruminants. To achieve environmental sustainabi­ 2 previously in Antioquia and Sabana de Bogotá. como metodología para cuantificar las emisiones de lity, animal production systems must reduce their Fi metano in vivo y los cambios de las poblaciones Ci methane emissions, a goal that can be achieved e¡. Key words: Ruminants, nutrition, markers ruminales se determinaron por PCR en tiempo real. through the manipulation of diet offered to method, harness. Se utilizaron cuatro novillas Holstein (200 ± 4,7 kg animals. The present study was carried out to PV) en un diseño de sobrecambio, con dos evaluate the in vivo effect of dietary inclusion of pr periodos experimentales de 12 días cada uno, coconut oil on ruminal function and methane SE 2. PRODUCCIÓN DE METANO, FERMEN­ evaluando dos tratamientos: el control (sin aceite) emission by ruminants. The polytunnel technique 1 1 gl TACIÓN RUMINAL EN NOVILLAS LECHERAS y un tratamiento con 5% (250 g.animar .día- ) de was standardized and used to quantify the in vivo pr RECIBIENDO UNA DIETA CON ACEITE DE aceite de coco. No hubo diferencias en pH y methane emissions, with changes in the ruminal 1 hE COC0 , Erika Andrea Angarita Amay;r; Ciro producción de AGV en el rumen. Sin embargo, las microbial populations being measured by real time ac Enrique González VargaS'; Elizabeth Martín poblaciones ruminales fueron diferentes; las PCR. Four Holstein heifers (200 ± 4.7 kg PV) were 4 efl Martínez ; Rolando Barahona Rosale~ bacterias totales se incrementaron (P<O,OOOl), used in a changeover design, with two experimental co mientras que los hongos, protozoarios y bacterias periods of 12 days each, to evaluate two dietary so 1 Trabajo financiado por la Internatlonal Atomic Energy Agency celulolíticas como Ruminococcos flavefacíens y (IAEAJ Viena, Austria y la Corporación Colombiana de treatments: the control (without oil) and a co Fibrobacter succinogenes se redujeron (P<O,05) a 1 1 Investigación Agropecuaria (CORPOICA) dentro del marco del treatment with 5% (250 g·animar ·dai ) of va causa del efecto defaunador y restrictivo sobre los Coordlnated Research Project "Development and Use of Rumen coconut oil. There were no differences in pH and la( Molecular Technlques for Predictlng and Enhancing Productivlfy mecanismos de adhesión que ejerce el aceite. La production of UFA in the rumen. Nevertheless, du (03.10.24). concentración de las bacterias metanogénicas no 2 Zoote01ista. Programa de Zootecnia. Facultad de Ciencías there were differences in ruminaJ populations; su¡ se alteró significativamente (P=O,07), incluir el Agropecuanas. Universidad de Cundlnamarca. E-mail: erlka with total bacteria increasing (P<O.OOOl) and du [email protected] aceite pudo afectar su actividad metabólica pero fungi, protozoa and cellulolytic bacteria J mE Zootecnista. Programa de Zootecma. Facultad de Ciencias no su concentración. Sin embargo, la producción Agropecuarias. Universidad de Cundinamarca. (Rumínococcus flavefacíens and Fibrobacter Un de metano se redujo 40% en promedio, de tal 4 Antiguamente Investigadora de la Corporacíón Colombiana de succínogenes) being reduced (P<0.05) due to the PG Investigación Agropecuaria, CORPOICA, E-mail: simblosis21 manera que la concentración de bacterias defaunating and restrictive effect of the oil on the mL @yahoo.com metanogénicas no es necesariamente un indicador 5 Profesor Asociado. Departamento de Producción Animal. adhesion of microbes to substrate. The fUE de la producción entérica de metano en bovinos. Facultad de Oencías Agropecuanas. Universidad Nacional de concentration of methanogenic bacteria was not prc Colombia, Sede Medellin. E-mail: [email protected] altered signi-ficantly (P=00,7) in response to oil Palabras claves: Ácidos grasos volátiles, de~ addition, which suggests coconut oil affects the Jacl El rumen le confiere a los bovinos la capacidad defaunación, Fibrobacter succínogenes, bacterias metabolic activity but not the viability of these det de convertir sustratos fibrosos con alto contenido metanogénicas, técnica del túnel. bacteria. Nevertheless, methane emissions were úre de carbohidratos estructurales, en alimentos de reduced by 40%, suggesting that the concentration alta calidad nutritiva como la carne y la leche. Sin pro METHANE PRODUCTION ANO RUMEN FER­ of methanogenic bacteria is not necessarily an embargo, por sus características innatas, en este des MENTATION PARAMETERS IN HOLSTEIN indicator of the enteric methane production in sistema digestivo se produce metano, un potente (±i HEIFERS RECEIVING COCONUT OIl IN bovines. gas con efecto invernadero, de cuyas emisiones req THEIR DIETS pro anuales, una porción significativa es generada por Key words: Defaunation, Abrobacter animales domésticos. En los últimos años, la ant! succínogenes, methanogenic bacteria, polytunnel tiva producción de metano ha asumido gran importancia The rumen gives to bovines the ability to turn technique, volatile fatty acids.
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