3
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Effect of the inclusion of beet pulps of different origin on the digestibility and nutritional value of diets for fattening rabbits Translated title: Efecto de la inclusión de pulpas de remolacha de diferente origen en la digestibilidad y el valor nutritivo de dietas para conejos de ceba

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          ABSTRACT To determine the digestibility variability of beet pulps (BP) in the nutritional value of diets for fattening rabbits, the substitution of 20 % of a control feed with BP from five different origins was evaluated. Rabbits of 42 days of age and 1.49 ± 0.208 kg of weight were used, housed in individual cages and with ad libitum feeding. The digestibility of feed components was determined by the conventional in vivo method of total fecal collection. The digestibility of each of beet pulps was determined by the substitution method. There was no effect of the substitution of components of the control feed with 20 % of BP from different sources in the voluntary intake of rabbits (P> 0.05). The inclusion of BP in diets increases the digestibility of dry matter, organic matter, gross energy and all fibrous fractions, and decreases the digestibility of crude protein. However, the effect was more or less important depending on the origin of BP (P <0.05), especially on the digestibility of all fibrous fractions, being the BP collected in summer the one with the highest digestibility. The origin of the BP also affected its nutritional value, giving values of digestible energy between 11.8 and 14.5 MJ kg DM-1 and digestible protein between 3.8 and 6.6 %.

          Translated abstract

          RESUMEN Para determinar la variabilidad de la digestibilidad de la pulpa de remolacha (PR) en el valor nutritivo de dietas para conejos de ceba, se evaluó la sustitución de 20% de un pienso control con PR de cinco orígenes distintos. Se utilizaron conejos de 42 días de edad y 1.49 ± 0.208 kg de peso, alojados en jaulas individuales y con alimentación ad libitum. La digestibilidad de los componentes de los piensos se determinó por el método convencional in vivo de recolección fecal total. La digestibilidad de cada una de las pulpas de remolacha se determinó mediante el método de sustitución. No se apreció efecto de la sustitución de componentes del pienso control por el 20% de PR de diferentes procedencias en el consumo voluntario de los conejos (P> 0.05). La inclusión de PR en las dietas aumenta la digestibilidad de materia seca, materia orgánica, energía bruta y de todas las fracciones fibrosas, y disminuye la digestibilidad de la proteína bruta. Sin embargo, el efecto fue más o menos importante según la procedencia de las PR (P< 0.05), especialmente ene la digestibilidad de todas las fracciones fibrosas, siendo la PR que se recolecta en verano la de mayor digestibilidad. El origen de la PR también afectó su valor nutritivo, dando valores de energía digestible entre 11.8 y 14.5 MJ kg MS-1 y de proteína digestible entre 3.8 y 6.6 %.

          Related collections

          Most cited references35

          • Record: found
          • Abstract: found
          • Article: not found

          Challenges with nonfiber carbohydrate methods.

          Nonfiber carbohydrates (NFC) encompass a compositionally and nutritionally diverse group exclusive of those carbohydrates found in NDF. Their content in feeds has often been described as a single value estimated by difference as 100% of dry matter minus the percentages of CP, NDF (adjusted for CP in NDF), ether extract, and ash. A calculated value was used because of difficulties with assays for individual NFC, but it does not differentiate among nutritionally distinct NFC. Errors in NFC estimation can arise from not accounting for CP in NDF and when multipliers other than 6.25 are appropriate to estimate CP. Analyses that begin to distinguish among NFC are those for starch, soluble fiber (non-NDF, nonstarch polysaccharides), and low molecular weight carbohydrates (mono- and oligosaccharides). Many starch analyses quantify alpha-glucans through specific hydrolysis of alpha-(1 --> 4) and alpha-(1 --> 6) linkages in the glucan, and measurement of released glucose. Incomplete gelatinization and hydrolysis will lead to underestimation of starch content. Starch values are inflated by enzyme preparations that hydrolyze carbohydrates other than alpha-glucan, measurement of all released monosaccharides without specificity for glucose, and failure to exclude free glucose present in the unhydrolyzed sample. Soluble fiber analyses err in a fashion similar to NFC if estimation of CP requires multipliers other than 6.25, or if contaminants such as CP and starch have not been properly accounted. Depolymerization and incomplete precipitation can also decrease soluble fiber estimates. The low molecular weight carbohydrates have been defined as carbohydrates soluble in 78 to 80% ethanol, which separates them from polysaccharides. They can be measured in extracts using broad-spectrum colorimetric assays (phenol-sulfuric acid assay or reducing sugar analysis of acid hydrolyzed samples) or chromatographic methods. Limitations of the colorimetric assays include lack of differentiation among mono- and oligosaccharides and differences in efficacy of measuring total carbohydrate. More sensitive and precise chromatographic methods require expensive equipment and specialized expertise. Current methods for NFC can separate nutritionally relevant fractions, but questions remain as to which fractions merit analysis and what analyses to use. These issues must be resolved in order to soundly evaluate and explore the roles of carbohydrates in diets.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: found
            Is Open Access

            Changes in Cecal Microbiota and Mucosal Gene Expression Revealed New Aspects of Epizootic Rabbit Enteropathy

            Epizootic Rabbit Enteropathy (ERE) is a severe disease of unknown aetiology that mainly affects post-weaning animals. Its incidence can be prevented by antibiotic treatment suggesting that bacterial elements are crucial for the development of the disease. Microbial dynamics and host responses during the disease were studied. Cecal microbiota was characterized in three rabbit groups (ERE-affected, healthy and healthy pretreated with antibiotics), followed by transcriptional analysis of cytokines and mucins in the cecal mucosa and vermix by q-rtPCR. In healthy animals, cecal microbiota with or without antibiotic pretreatment was very similar and dominated by Alistipes and Ruminococcus. Proportions of both genera decreased in ERE rabbits whereas Bacteroides, Akkermansia and Rikenella increased, as well as Clostridium, γ-Proteobacteria and other opportunistic and pathogenic species. The ERE group displayed remarkable dysbiosis and reduced taxonomic diversity. Transcription rate of mucins and inflammatory cytokines was very high in ERE rabbits, except IL-2, and its analysis revealed the existence of two clearly different gene expression patterns corresponding to Inflammatory and (mucin) Secretory Profiles. Furthermore, these profiles were associated to different bacterial species, suggesting that they may correspond to different stages of the disease. Other data obtained in this work reinforced the notion that ERE morbidity and mortality is possibly caused by an overgrowth of different pathogens in the gut of animals whose immune defence mechanisms seem not to be adequately responding.
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Fibres in rabbit feeding for digestive troubles prevention: respective role of low-digested and digestible fibre

              T Gidenne (2003)
                Bookmark

                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
                December 2019
                : 53
                : 4
                : 413-424
                Affiliations
                [1] Oruro orgnameUniversidad Técnica de Oruro orgdiv1Facultad de Ciencias Agrarias y Naturales Bolivia
                [2] Cusco orgnameUniversidad Nacional de San Antonio Abad del Cusco orgdiv1Facultad de Agronomía y Zootecnia Perú
                [3] Valencia orgnameUniversitat Politècnica de València orgdiv1Instituto de Ciencia y Tecnología Animal España
                Article
                S2079-34802019000400413 S2079-3480(19)05300400413
                2289151e-d9dc-41ed-be13-4ccc87039cf1

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

                History
                : 24 June 2019
                : 05 February 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 50, Pages: 12
                Product

                SciELO Cuba

                Categories
                ANIMAL SCIENCE

                Oryctolagus cuniculus,beet pulp,energy,digestibility,pulpa de remolacha,energía,digestibilidad

                Comments

                Comment on this article