Análisis de las poblaciones microbianas en fermentadores de flujo continuo: efecto de modificacioens técnicas para la retención de protozoos en el sistema

Cabeza Luna, I. and Carro Travieso, María Dolores and Fernández Yepes, J. and Molina Alcaide, Eduarda (2015). Análisis de las poblaciones microbianas en fermentadores de flujo continuo: efecto de modificacioens técnicas para la retención de protozoos en el sistema. In: "XVI Jornadas sobre Producción Animal", 09/09/2015-11/09/2015, Zaragoza, España. p. 3.

Description

Title: Análisis de las poblaciones microbianas en fermentadores de flujo continuo: efecto de modificacioens técnicas para la retención de protozoos en el sistema
Author/s:
  • Cabeza Luna, I.
  • Carro Travieso, María Dolores
  • Fernández Yepes, J.
  • Molina Alcaide, Eduarda
Item Type: Presentation at Congress or Conference (Article)
Event Title: XVI Jornadas sobre Producción Animal
Event Dates: 09/09/2015-11/09/2015
Event Location: Zaragoza, España
Title of Book: Alimentación y territorios sostenibles desde el Sur de Europa
Date: 2015
Volume: 1
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Producción Agraria
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The objective of this work was to study the effect of two technical modifications (supplemented with sponge materials (ES) and provided with a filter system (FIL))in continuous-culture fermenters on the microbial populations and ruminal fermentation parameters over the sampling period. Six fermenters fed a 50:50 alfalfa hay: concentrate diet, inoculated with rumen liquor from sheep fed the same diet, were used in two incubation runs of 14 days each. On days 10 and 14, samples were taken for analysis of fermentation parameters (volatile fatty acids, ammonia-N and lactate) and microbial populations. None of the technical modification affected (P>0.05) concentrations of bacterial DNA and the relative abundance of fungi and archaea, but protozoal DNA concentrations were higher (P>0.05) in ES and FIL fermenters than in the control ones. However, values of protozoal DNA were about 50 times lower than in the rumen fluid used as inoculum for the ermenters. The tested technical modifications did not affect (P>0.05) any fermentation parameter, and there were no differences in fermentation parameters between days 10 and 14, with the exception of lactate production which was higher (P=0.009) on day 14 than on day 10. In conclusion, the technical modifications tested maintained protozoa in continuous culture fermenters without any effect on fermentation parameters and other microbial populations, but protozoa concentrations were still lower than those in the rumen.

More information

Item ID: 42052
DC Identifier: http://oa.upm.es/42052/
OAI Identifier: oai:oa.upm.es:42052
Official URL: http://www.aida-itea.org/index.php/jornadas/presentacion-jornadas
Deposited by: Memoria Investigacion
Deposited on: 27 Jun 2016 17:12
Last Modified: 27 Jun 2016 17:12
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