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Palma-Granados P, Muñoz M, Delgado-Gutierrez MA, Óvilo C, Nuñez Y, Fernández-Barroso MA, Sánchez-Esquiliche F, Ramírez L, García-Casco JM. Candidate SNPs for meat quality and carcass composition in free-range Iberian pigs. Meat Sci 2024; 207:109373. [PMID: 37906998 DOI: 10.1016/j.meatsci.2023.109373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/02/2023]
Abstract
Several genetic markers, previously associated with meat quality traits, have been proposed to be included in Iberian pig breeding programs. However, before being implemented, effects of these candidate SNPs on premium cuts' yield should be evaluated to avoid potential undesirable antagonistic effects. Therefore, the main goals of this study were to evaluate the effects of a set of 26 polymorphisms on premium cuts weights and to corroborate their effects on meat quality in a larger population. Phenotypic data of approximately 1550 Iberian pigs were recorded. The PRKAG3_rs319678464C and PRKAG3_rs1108399077G alleles were associated with an increase of shear force, water losses and color values and a reduction of average daily gain (ADG). The CAST_rs196949783G > A and ADIPOQ_rs3476515794T > G SNPs mainly affected IMF content, with this last SNP being the only one with significant effects on any of the carcass measures, specifically Longissimus thoracis et lumborum (LTL) weight. The ELOVL6_rs3473714672A, FASN_rs331694510A, MTTP_rs335896411C and ACACA_rs340781986C alleles were linked to a higher percentage of oleic acid and monounsaturated FA and a decrease in palmitic, palmitoleic and saturated FA. Besides, suggestive effects were observed between ELOVL6_rs3473714672A > G and ham and shoulder weights, and between MTTP_rs335896411T > C and LTL muscle weight. Finally, the NR6A1_rs326780270T allele was associated with a significant increase in ADG and tended to reduce the ham weight. The SNPs mapped to PRKAG3 (rs319678464G > C), ACACA, FASN and CAST genes could be implemented in breeding programs to improve meat quality traits without undesirable effects on carcass composition. The SNPs mapped to PRKAG3 (rs1108399077G > A) ELOVL6, MTTP and NR6A1 should continue to be tested in a larger number of animals.
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Affiliation(s)
- Patricia Palma-Granados
- Centro de I+D en Cerdo Ibérico, INIA-CSIC, Ctra. EX101 km 4,7, 06300 Zafra, Spain; Dpto. Mejora Genética Animal, INIA-CSIC, Ctra La Coruña km 7,5, 28040 Madrid, Spain.
| | - María Muñoz
- Dpto. Mejora Genética Animal, INIA-CSIC, Ctra La Coruña km 7,5, 28040 Madrid, Spain
| | - Miguel A Delgado-Gutierrez
- Centro de I+D en Cerdo Ibérico, INIA-CSIC, Ctra. EX101 km 4,7, 06300 Zafra, Spain; Dpto. Mejora Genética Animal, INIA-CSIC, Ctra La Coruña km 7,5, 28040 Madrid, Spain
| | - Cristina Óvilo
- Dpto. Mejora Genética Animal, INIA-CSIC, Ctra La Coruña km 7,5, 28040 Madrid, Spain
| | - Yolanda Nuñez
- Dpto. Mejora Genética Animal, INIA-CSIC, Ctra La Coruña km 7,5, 28040 Madrid, Spain
| | - Miguel A Fernández-Barroso
- Centro de I+D en Cerdo Ibérico, INIA-CSIC, Ctra. EX101 km 4,7, 06300 Zafra, Spain; Dpto. Mejora Genética Animal, INIA-CSIC, Ctra La Coruña km 7,5, 28040 Madrid, Spain
| | | | - Luisa Ramírez
- Sánchez Romero Carvajal Jabugo SA, Ctra. San Juan del Puerto, 21290 Huelva, Spain
| | - Juan M García-Casco
- Centro de I+D en Cerdo Ibérico, INIA-CSIC, Ctra. EX101 km 4,7, 06300 Zafra, Spain; Dpto. Mejora Genética Animal, INIA-CSIC, Ctra La Coruña km 7,5, 28040 Madrid, Spain
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Muñoz M, Fernández-Barroso MA, López-García A, Caraballo C, Nuñez Y, Óvilo C, González E, García-Casco JM. Consequences of a low protein diet on the liver and longissimus dorsi transcriptome of Duroc × Iberian crossbred pigs. Animal 2021; 15:100408. [PMID: 34890881 DOI: 10.1016/j.animal.2021.100408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 11/19/2022] Open
Abstract
Low protein diets supplied during the growing period of pigs can diminish their growth rate and increase the intramuscular fat (IMF) content which affects the sensorial and technological characteristics of the products. In the present study, the effects of a low protein diet supplied during the growing period of Duroc × Iberian crossbred pigs on several phenotypic traits and on liver and longissimus dorsi transcriptome were analysed at the beginning (EARLY) and at the end (LATE) of the growing period. Two experimental groups of 10 crossbred pigs each were fed two isocaloric diets with different protein content: control diet (C) with 16.5% protein and 0.8% lysine and low protein diet (LP) with 11% CP and 0.6% lysine. Animals fed LP diet have a slower growth than those fed C diet, but no effect of LP diet was observed on the IMF content. The transcriptomes of liver and longissimus dorsi were characterised and quantified through RNA-sequencing (RNA-seq). In liver, 134 and 480 differentially expressed annotated genes and new isoforms (DEGs) were detected between C and LP diets for EARLY and LATE animals, respectively. In muscle, 128 and 68 DEGs were detected at EARLY and LATE time-points. Functional interpretation revealed that LP diet may inhibit immune system molecules and processes in both tissues at EARLY stage. In liver, the DEGs mainly affect lipid and cholesterol metabolic processes, while in muscle, the expression changes would be involved in growth, development and meat quality. In conclusion, a low protein diet supplied during the growing period seems to slow down the growth of Duroc × Iberian crossbred pigs, but it also seems to affect multiple biological processes that could compromise the immune system of Duroc × Iberian crossbred pigs. Therefore, these results question the adequacy of this type of regime in Duroc × Iberian pigs that must be studied in greater depth before being implemented.
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Affiliation(s)
- M Muñoz
- Centro de I+D en Cerdo Ibérico, Zafra (Badajoz), Spain; Departamento de Mejora Genética Animal, INIA, Madrid, Spain.
| | - M A Fernández-Barroso
- Centro de I+D en Cerdo Ibérico, Zafra (Badajoz), Spain; Departamento de Mejora Genética Animal, INIA, Madrid, Spain
| | - A López-García
- Centro de I+D en Cerdo Ibérico, Zafra (Badajoz), Spain; Departamento de Mejora Genética Animal, INIA, Madrid, Spain
| | - C Caraballo
- Centro de I+D en Cerdo Ibérico, Zafra (Badajoz), Spain; Departamento de Mejora Genética Animal, INIA, Madrid, Spain
| | - Y Nuñez
- Departamento de Mejora Genética Animal, INIA, Madrid, Spain
| | - C Óvilo
- Departamento de Mejora Genética Animal, INIA, Madrid, Spain
| | - E González
- Instituto Universitario de Investigación de Recursos Agrícolas (INURA), Universidad de Extremadura, Badajoz, Spain
| | - J M García-Casco
- Centro de I+D en Cerdo Ibérico, Zafra (Badajoz), Spain; Departamento de Mejora Genética Animal, INIA, Madrid, Spain
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Benítez R, Núñez Y, Ayuso M, Isabel B, Fernández-Barroso MA, De Mercado E, Gómez-Izquierdo E, García-Casco JM, López-Bote C, Óvilo C. Changes in Biceps femoris Transcriptome along Growth in Iberian Pigs Fed Different Energy Sources and Comparative Analysis with Duroc Breed. Animals (Basel) 2021; 11:ani11123505. [PMID: 34944282 PMCID: PMC8697974 DOI: 10.3390/ani11123505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/26/2021] [Accepted: 12/06/2021] [Indexed: 12/19/2022] Open
Abstract
Simple Summary The genetic mechanisms that regulate biological processes, such as skeletal muscle development and growth, or intramuscular fat deposition, have attracted great interest, given their impact on production traits and meat quality. In this sense, a comparison of the transcriptome of skeletal muscle between phenotypically different pig breeds, or along growth, could be useful to improve the understanding of the molecular processes underlying the differences in muscle metabolism and phenotypic traits, potentially driving the identification of causal genes, regulators and metabolic pathways involved in their variability. Abstract This experiment was conducted to investigate the effects of developmental stage, breed, and diet energy source on the genome-wide expression, meat quality traits, and tissue composition of biceps femoris muscle in growing pure Iberian and Duroc pigs. The study comprised 59 Iberian (IB) and 19 Duroc (DU) animals, who started the treatment at an average live weight (LW) of 19.9 kg. The animals were kept under identical management conditions and fed two diets with different energy sources (6% high oleic sunflower oil or carbohydrates). Twenty-nine IB animals were slaughtered after seven days of treatment at an average LW of 24.1 kg, and 30 IB animals plus all the DU animals were slaughtered after 47 days at an average LW of 50.7 kg. The main factors affecting the muscle transcriptome were age, with 1832 differentially expressed genes (DEGs), and breed (1055 DEGs), while the effect of diet on the transcriptome was very small. The results indicated transcriptome changes along time in Iberian animals, being especially related to growth and tissue development, extracellular matrix (ECM) composition, and cytoskeleton organization, with DEGs affecting relevant functions and biological pathways, such as myogenesis. The breed also affected functions related to muscle development and cytoskeleton organization, as well as functions related to solute transport and lipid and carbohydrate metabolism. Taking into account the results of the two main comparisons (age and breed effects), we can postulate that the Iberian breed is more precocious than the Duroc breed, regarding myogenesis and muscle development, in the studied growing stage.
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Affiliation(s)
- Rita Benítez
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
| | - Yolanda Núñez
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
| | - Miriam Ayuso
- Department of Veterinary Sciences, Faculty of Biomedical, Pharmaceutical and Veterinary Sciences, University of Antwerp, B-2610 Wilrijk, Belgium;
| | - Beatriz Isabel
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain; (B.I.); (C.L.-B.)
| | - Miguel A. Fernández-Barroso
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
| | - Eduardo De Mercado
- Centro de Pruebas de Porcino ITACYL, Hontalbilla, 40353 Segovia, Spain; (E.D.M.); (E.G.-I.)
| | - Emilio Gómez-Izquierdo
- Centro de Pruebas de Porcino ITACYL, Hontalbilla, 40353 Segovia, Spain; (E.D.M.); (E.G.-I.)
| | - Juan M. García-Casco
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
| | - Clemente López-Bote
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain; (B.I.); (C.L.-B.)
| | - Cristina Óvilo
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
- Correspondence: ; Tel.: +34-91-3471492
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