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We are grateful to the technical staff of CITA Research Center, and especially to A. Legua. A. Dominguez, J.R. Bertolin, and G. Tanco. Financial support for this project was provided by the Spanish Ministry of Economy and Competitiveness (INIA RTA2014-00038-C02-01, RZP2017-00001 and RZP2015-00001) and the Government of Aragon (Grant Research Group Funds, Group A14_17R and A14_20R). P.J. Rufino-Moya had a predoctoral grant from INIA.

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Joy, MCorresponding AuthorRufino-Moya, PAuthorLobon, SAuthorBlanco, MAuthor

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December 27, 2020
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The effect of the inclusion of pea in lamb fattening concentrate on in vitro and in situ rumen fermentation

Publicated to:Journal Of The Science Of Food And Agriculture. 101 (7): 3041-3048 - 2021-05-01 101(7), DOI: 10.1002/jsfa.10938

Authors: Joy, Margalida; Rufino-Moya, Pablo; Lobon, Sandra; Blanco, Mireia

Affiliations

Ctr Invest & Tecnol Agroalimentaria Aragon CITA, Unidad Prod & Sanidad Anim, Avda Montanana 930, Zaragoza 50059, Spain - Author
Univ Zaragoza, Inst Agroalimentario Aragon IA2, CITA, Zaragoza, Spain - Author

Abstract

BACKGROUND The objective of this study was to evaluate the effect of the proportion of pea (0%, 10%, 20%, and 30%), as a partial replacement for soybean meal (SBM) in the fattening concentrate, on ruminal fermentation in lambs. Gas and methane (CH4) production, in vitro dry matter degradability (IVDMD), ammonia (NH3-N), and volatile fatty acid (VFA) production after 24 h of incubation were evaluated. The concentrates were also incubated in the rumen of the wethers for 2, 4, 6, 8, 12, and 24 h to evaluate the effects of pea inclusion on in situ dry matter degradability (DMD), organic matter degradability (OMD), nitrogen degradability (ND), NH3-N, and VFA production. RESULTS In the in vitro assay, the inclusion of pea only affected gas production (mL day(-1) degraded dry matter), CH4 production (mL day(-1) degraded dry matter), and IVDMD (P < 0.05), and tended to affect NH3-N content (P < 0.10) without affecting VFA production. In the in situ assay, the inclusion of pea increased DMD, OMD, and ND linearly (P < 0.001), whereas pea inclusion decreased NH3-N content linearly (P < 0.05). Neither total VFA production nor the proportion of acetic acid were affected by pea inclusion (P > 0.05), but the propionic proportion increased with the proportion of pea included. CONCLUSIONS The best level of pea inclusion in the concentrate could not be established based on the results of this study. However, the results showed that the inclusion of pea provides a good alternative protein source. (c) 2020 Society of Chemical Industry

Keywords

concentratesdegradationpisum sativumproteinAmmoniaAnimal feedAnimalsCarcass characteristicsConcentratesDegradationDigestionEnergy valueFatty acids, volatileFemaleFermentationField peaGas-productionLegume seedsMaleMethaneNutrient digestibilityPisum sativumProductive performancesProteinProtein-sourcesRumenSheepSoybean-mealVitamin-e

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal Of The Science Of Food And Agriculture due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2021, it was in position 12/59, thus managing to position itself as a Q1 (Primer Cuartil), in the category Agriculture, Multidisciplinary.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 1.07, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-09, the following number of citations:

  • WoS: 4
  • Scopus: 5
  • Europe PMC: 2

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-09:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 8 (PlumX).

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Joy Torrens, Margalida) and Last Author (Blanco Alibes, Mireia).

the author responsible for correspondence tasks has been Joy Torrens, Margalida.