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Author A.M.d.A. acknowledges national funding through FCT-Fundac & atilde;o para a Ciencia e a Tecnologia, I.P., under the projects UIDB/04129/2020 of LEAF-Linking Landscape, Environment, Agriculture and Food, Research Unit and LA/P/0092/2020 of Associate Laboratory TERRA.

Analysis of institutional authors

Ripoll, GuillermoAuthor

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February 11, 2025
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Article

Reducing Dietary Protein Levels with Amino Acid Supplementation in Duroc Sire Line Finishing Pigs: Growth Performances, Carcass and Meat Traits and Nitrogen Balance in Males and Females

Publicated to:Animals. 14 (24): 3572- - 2024-12-01 14(24), DOI: 10.3390/ani14243572

Authors: de Almeida, Andre Martinho; Latorre, Maria Angeles; Ripoll, Guillermo; Verdu, Marcal; Alvarez-Rodriguez, Javier

Affiliations

BonArea Agrupa, Dept Anim Nutr & Feed Ind, Guissona 25210, Spain - Author
Ctr Invest & Tecnol Agroalimentaria Aragon CITA IA, Unidad Prod & Sanidad Anim, Avda Montanana 930, Zaragoza 50059, Spain - Author
Univ Lisbon, LEAF Linking Landscape Environm Agr & Food Res Ctr, Associated Lab TERRA, Inst Super Agron, P-1349017 Lisbon, Portugal - Author
Univ Zaragoza, Escuela Politecn Super, Dept Prod Anim & Ciencia Alimentos, Ctra Cuarte S-N, Huesca 22071, Spain - Author
Univ Zaragoza, Fac Vet, Dept Prod Anim & Ciencia Alimentos, IA2, Calle Miguel Servet 177, Zaragoza 50013, Spain - Author
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Abstract

Crude protein (CP) reduction and amino acid (AAs) supplementation is an interesting cost-reducing strategy for environmental compliance. The objective of this work is to study productive performances of heavy Duroc X (Landrace X Large white) male and female pigs during the finishing stage under a 2% CP reduction with crystalline AA supplementation. A total of 60 entire male and 60 female pigs (means +/- standard deviations: 109 +/- 4.9 days of age; 67.9 +/- 7.18 kg of body weight) were distributed in split-sex pens (6 pigs/pen) and fed ad libitum. Two isoenergetic diets were provided (145 and 125 g CP/kg with AA supplementation, control and low-CP) during the final 42 days of finishing period. Growth performance, carcass and meat traits were evaluated. The fixed effects of dietary treatment, sex and their interaction were considered and simple least squares models used. Males were 7.25% heavier (p < 0.001) and had 16% higher average daily gains (p < 0.0001) than females in both treatments with no differences in feed intake or feed conversion ratio (p > 0.05). Nitrogen efficiency was 35% higher in low-CP males. Little difference was found for most carcass and meat traits between treatments. Males had 7-8% higher loin subcutaneous fat thickness in both dietary treatments (p = 0.011). Males and females of the low-CP diet showed higher fat and saturated fat contents than controls (p = 0.020). A 20 g/kg CP reduction with AA supplementation is an efficient strategy during the finishing phase without productivity losses in heavy Duroc sire line genotypes of both sexes.

Keywords

Alimentación de cerdosAlimentación de los animalesAmino acid supplementationAminoácidosCrude proteinExcretionFatFibeFinalización del ganadoIdeal protein conceptImpactProteina brutaQualityReduced protein contentSeSexWeight

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Animals 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, 2024 there are still no calculated indicators, but in 2023, it was in position 10/80, 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 2025-07-16:

  • 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: 3 (PlumX).

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

    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:

    • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
    • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: http://hdl.handle.net/10532/7427

    Leadership analysis of institutional authors

    This work has been carried out with international collaboration, specifically with researchers from: Portugal.