For Publishers
DiscoveryMetadataPeer reviewHostingPublishing
For Researchers
JoinPublishReviewCollect
Register
Blog
About
Search
Advanced search
My ScienceOpen
Search
For Publishers
For Researchers
Blog
About
10
views
31
references
 Top references
cited by
0
    
0 reviews
 Review
0
comments
 Comment
0
recommends
+1 Recommend
0 collections
    0
    shares
      147
      similar
       All similar
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Digestion kinetics of carbohydrate fractions of citrus by-products

      research-article

      Read this article at

      ScienceOpenPMC
      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

          The present experiment was carried out to determine the digestion kinetics of carbohydrate fractions of citrus by-products. Grapefruit pulp (GP), lemon pulp (LE), lime pulp (LI) and orange pulp (OP) were the test feed. Digestion kinetic of whole citrus by-products and neutral detergent fiber (NDF) fraction and acid detergent fiber (ADF) fractions of citrus by-products were measured using the in vitro gas production technique. Fermentation kinetics of the neutral detergent soluble carbohydrates (NDSC) fraction and hemicelluloses were calculated using a curve subtraction. The fermentation rate of whole was the highest for the LE ( p < 0.05). For all citrus by-products lag time was longer for hemicellulose than other carbohydrate fractions. There was no significant difference among potential gas production ( A) volumes of whole test feeds ( p < 0.16). Dry matter (DM) digestibility contents of LE and LI were the highest ( p < 0.02). The NDF digestibility was the highest ( p < 0.05) in LI and GP, while the lowest ( p < 0.03) values of ADF digestibility were observed in LI and LE. According to the results of the present study, carbohydrate fractions of citrus by-products have high potential for degradability. It could also be concluded that carbohydrate fractions of citrus by-products have remarkable difference in digestion kinetics and digestive behavior.

          Related collections

          Most cited references31

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

          A net carbohydrate and protein system for evaluating cattle diets: II. Carbohydrate and protein availability.

          C Sniffen, J O'Connor, P Van Soest … (1992)
          The Cornell Net Carbohydrate and Protein System (CNCPS) has a submodel that predicts rates of feedstuff degradation in the rumen, the passage of undegraded feed to the lower gut, and the amount of ME and protein that is available to the animal. In the CNCPS, structural carbohydrate (SC) and nonstructural carbohydrate (NSC) are estimated from sequential NDF analyses of the feed. Data from the literature are used to predict fractional rates of SC and NSC degradation. Crude protein is partitioned into five fractions. Fraction A is NPN, which is trichloroacetic (TCA) acid-soluble N. Unavailable or protein bound to cell wall (Fraction C) is derived from acid detergent insoluble nitrogen (ADIP), and slowly degraded true protein (Fraction B3) is neutral detergent insoluble nitrogen (NDIP) minus Fraction C. Rapidly degraded true protein (Fraction B1) is TCA-precipitable protein from the buffer-soluble protein minus NPN. True protein with an intermediate degradation rate (Fraction B2) is the remaining N. Protein degradation rates are estimated by an in vitro procedure that uses Streptomyces griseus protease, and a curve-peeling technique is used to identify rates for each fraction. The amount of carbohydrate or N that is digested in the rumen is determined by the relative rates of degradation and passage. Ruminal passage rates are a function of DMI, particle size, bulk density, and the type of feed that is consumed (e.g., forage vs cereal grain).
          Article 0 comments Cited 187 times – based on 0 reviews     Review now
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            A revised model for the estimation of protein degradability in the rumen

            Jamie McDonald (1981)
            Article 0 comments Cited 128 times – based on 0 reviews     Review now
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Kinetics of fiber digestion from in vitro gas production.

              P R Schofield, A Pell, Bruce Pitt (1994)
              In vitro gas production, measured by computer-interfaced pressure sensors, was used to follow the digestion of a crystalline processed cellulose, a bacterial cellulose, and mixtures of these substrates by mixed ruminal bacteria. A first-order, substrate limited model (simple exponential with lag) and two bacterial growth models (logistic, Gompertz) were tested to fit these data. No single pool model gave an optimal fit to all substrates, but dual pool versions of both the logistic and Gompertz models fitted the data extremely well. Derivations of these models in the context of gas production are presented. The dual pool version of the exponential model commonly used to analyze fiber digestion was not able to reproduce the slope variations seen with mixed substrates. A modified dual pool logistic equation, with a single lag value, was selected to model the in vitro digestion of these substrates. The model was able to predict adequately both the input composition and the kinetic parameters for a defined mixture and gave a good fit (r2 > .995) to data from all the single and mixed substrates tested. This model may be useful for interpreting gas accumulation from natural feedstuffs.
              Article 0 comments Cited 109 times – based on 0 reviews     Review now
                Bookmark
                All references

                Author and article information

                Journal
                Journal ID (nlm-ta): Vet Res Forum
                Journal ID (iso-abbrev): Vet Res Forum
                Journal ID (publisher-id): VRF
                Title: Veterinary Research Forum
                Publisher: Urmia University Press (Urmia, Iran )
                ISSN (Print): 2008-8140
                ISSN (Electronic): 2322-3618
                Publication date (Print): Winter 2015
                Publication date (Electronic): 15 March 2015
                Volume: 6
                Issue: 1
                Pages: 41-48
                Affiliations
                [1 ] Department of Animal Science, Faculty of Agriculture, University of Kurdistan, Sanandaj, Kurdistan, Iran;
                [2 ] Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
                Author notes
                [* ]Correspondence: Akbar Taghizadeh. PhD, Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran. E-mail: ataghius@yahoo.com
                Article
                Publisher ID: vrf-6-041
                PMC ID: 4405684
                PubMed ID: 25992250
                SO-VID: 0da01b8d-a70d-46bb-ad3a-181a5657abae
                Copyright © © 2015 Urmia University. All rights reserved.
                License:

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License, ( http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 1 February 2014
                Date accepted : 9 June 2014
                Categories
                Subject: Original Article

                Keywords: carbohydrate fractions,citrus by-products,digestion kinetics,gas production
                Data availability:
                Keywords: carbohydrate fractions, citrus by-products, digestion kinetics, gas production

                Comments

                Comment on this article