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Financial support for this project was provided by the Spanish Ministry of Economy and Competitiveness (INIA RTA2014-00038-C02-01) , the European Union's Horizon 2020 Research and Innovation Program (GenTORE, grant agreement No. 727213) and the Government of Aragon (Grant Research Group Funds, Group INPASS A25_23R) .

Analysis of institutional authors

Casasus, IsabelCorresponding AuthorJoy, MargalidaAuthorBlanco, MireiaAuthor

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May 14, 2025
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Replacement of soya bean meal and corn by field peas in young bulls fattening diets: Performance, rumen fermentation, nitrogen use and metabolism

Publicated to:Animal Feed Science And Technology. 322 116273- - 2025-02-26 322(), DOI: 10.1016/j.anifeedsci.2025.116273

Authors: Casasus, Isabel; Villalba, Daniel; Joy, Margalida; Costa-Roura, Sandra; Blanco, Mireia

Affiliations

Ctr Invest & Tecnol Agroalimentaria Aragon CITA, Avda Montanana 930, Zaragoza 50059, Spain - Author
Univ Lleida, Avinguda Alcalde Rovira Roure 191, Lleida 25198, Spain - Author
Univ Zaragoza, Inst Agroalimentario Aragon IA2, CITA, Zaragoza, Spain - Author

Abstract

This study explored the interest in field peas replacing soya bean meal and corn at different rates in beef fattening diets by assessing impacts on animal performance, ruminal fermentation, nitrogen use and economic output. Thirty-two Parda de Monta & ntilde;a young bulls (210 +/- 24.3 kg BW) were randomly assigned to one of four treatments (0 %, 15 %, 30 %, 45 % peas in isonitrogenous and isoenergetic diets). After 23 d adaptation, fattening was divided into Growing (first 134 d) and Finishing (from d 135-500 kg - target slaughter BW). Daily weight gains were higher (P < 0.001) and the DM intake and feed conversion ratio were lower (P < 0.001) during Growing vs. Finishing. Ruminal NH3-N concentrations were lower and total VFA were higher during Growing vs. Finishing (P < 0.001). Increasing proportion of field peas did not affect daily gains or carcass traits, tended to have a cubic effect on DM intake (P = 0.06) and a quadratic effect on days on feed (P = 0.09), but did not affect the feed conversion ratio. Ruminal fluid pH decreased and total VFA increased linearly with increased pea inclusion, whereas NH3-N concentration (P = 0.06) and the proportions of propionic (P = 0.06) and butyric acids (P = 0.06) tended to display quadratic patterns, but acetic acid was not affected (P = 0.18). N intake did not differ among diets, but faecal N excretion decreased linearly (P = 0.002) and urine N excretion increased linearly (P = 0.02) with increasing proportion of pea. The gross margin obtained with 30 % peas was the best in four scenarios considering different relative feed ingredient prices. These results support the interest in including up to 30 % field peas in beef fattening diets but given the shift in the route of N excretion from faeces to urine, irrespectively of the period, these alternatives' environmental interest should be assessed at a territorial scale.

Keywords

Alimentación de rumiantesBeefBeef bullsCattleConcentrateDigestionEconomic analysiEconomic analysisFeeding valueFluido del rumenHigh-concentrate dietsIn-situ disappearanceMetabolismo del nitrógenoMicrobial efficiencyN partitionNitrógeno no protéicoPisum sativumRendimiento cárnicoRuminal fermentationSoybean-mealStarc

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Animal Feed Science And Technology 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, 2025, it was in position 15/86, thus managing to position itself as a Q1 (Primer Cuartil), in the category Agriculture, Dairy & Animal Science.

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 2025-07-21:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 4.
  • 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: 4 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 1.5.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

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 (Casasús Pueyo, Isabel) and Last Author (Blanco Alibes, Mireia).

the author responsible for correspondence tasks has been Casasús Pueyo, Isabel.