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Devailly G, Fève K, Saci S, Sarry J, Valière S, Lluch J, Bouchez O, Ravon L, Billon Y, Gilbert H, Riquet J, Beaumont M, Demars J. Divergent selection for feed efficiency in pigs altered the duodenum transcriptomic response to feed intake and its DNA methylation profiles. Physiol Genomics 2024; 56:397-408. [PMID: 38497119 DOI: 10.1152/physiolgenomics.00123.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 03/01/2024] [Accepted: 03/10/2024] [Indexed: 03/19/2024] Open
Abstract
Feed efficiency is a trait of interest in pigs as it contributes to lowering the ecological and economical costs of pig production. A divergent genetic selection experiment from a Large White pig population was performed for 10 generations, leading to pig lines with relatively low- (LRFI) and high- (HRFI) residual feed intake (RFI). Feeding behavior and metabolic differences have been previously reported between the two lines. We hypothesized that part of these differences could be related to differential sensing and absorption of nutrients in the proximal intestine. We investigated the duodenum transcriptome and DNA methylation profiles comparing overnight fasting with ad libitum feeding in LRFI and HRFI pigs (n = 24). We identified 1,106 differentially expressed genes between the two lines, notably affecting pathways of the transmembrane transport activity and related to mitosis or chromosome separation. The LRFI line showed a greater transcriptomic response to feed intake than the HRFI line. Feed intake affected genes from both anabolic and catabolic pathways in the pig duodenum, such as rRNA production and autophagy. Several nutrient transporter and tight junction genes were differentially expressed between lines and/or by short-term feed intake. We also identified 409 differentially methylated regions in the duodenum mucosa between the two lines, while this epigenetic mark was less affected by feeding. Our findings highlighted that the genetic selection for feed efficiency in pigs changed the transcriptome profiles of the duodenum, and notably its response to feed intake, suggesting key roles for this proximal gut segment in mechanisms underlying feed efficiency.NEW & NOTEWORTHY The duodenum is a key organ for the hunger/satiety loop and nutrient sensing. We investigated how the duodenum transcriptome and DNA methylation profiles are affected by feed intakes in pigs. We observed thousands of changes in gene expression levels between overnight-fasted and fed pigs in high-feed efficiency pig lines, but almost none in the related low-feed efficiency pig line.
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Affiliation(s)
| | - Katia Fève
- GenPhySE, Université de Toulouse, INRAE, ENVT, Castanet Tolosan, France
| | - Safia Saci
- GenPhySE, Université de Toulouse, INRAE, ENVT, Castanet Tolosan, France
| | - Julien Sarry
- GenPhySE, Université de Toulouse, INRAE, ENVT, Castanet Tolosan, France
| | - Sophie Valière
- INRAE, US 1426, GeT-PlaGe, Genotoul, Castanet-Tolosan, France
| | - Jérôme Lluch
- INRAE, US 1426, GeT-PlaGe, Genotoul, Castanet-Tolosan, France
| | - Olivier Bouchez
- INRAE, US 1426, GeT-PlaGe, Genotoul, Castanet-Tolosan, France
| | - Laure Ravon
- Pig Phenotyping and Innovative Breeding Facility, GenESI, UE1372, INRAE, Surgères, France
| | - Yvon Billon
- Pig Phenotyping and Innovative Breeding Facility, GenESI, UE1372, INRAE, Surgères, France
| | - Hélène Gilbert
- GenPhySE, Université de Toulouse, INRAE, ENVT, Castanet Tolosan, France
| | - Juliette Riquet
- GenPhySE, Université de Toulouse, INRAE, ENVT, Castanet Tolosan, France
| | - Martin Beaumont
- GenPhySE, Université de Toulouse, INRAE, ENVT, Castanet Tolosan, France
| | - Julie Demars
- GenPhySE, Université de Toulouse, INRAE, ENVT, Castanet Tolosan, France
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Fraga AZ, Campos PHRF, Hauschild L, Chalvon-Demersay T, Beaumont M, Le Floc’h N. A blend of functional amino acids and grape polyphenols improves the pig capacity to cope with an inflammatory challenge caused by poor hygiene of housing conditions. BMC Vet Res 2023; 19:25. [PMID: 36717823 PMCID: PMC9887908 DOI: 10.1186/s12917-023-03580-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 01/18/2023] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Dietary supplementation with a blend of functional amino acids (AA) and grape extract polyphenols contributes to preserve intestinal health and growth performance of piglets during the post-weaning period. In the present experiment, we assessed if a supplementation with a mix of AA and grape extract polyphenols during the post-weaning period would persist to improve the pig capacity to cope with a subsequent challenge caused by poor hygiene of housing conditions. Eighty pigs weaned at 28 days of age were fed a standard diet supplemented (AAP) or not (CNT) with 0.2% of a blend of AA (glutamine, arginine, cystine, valine, isoleucine, and leucine) and grape extract polyphenols during the post-weaning period (from week 0 to 6). At week 6, pigs were transferred to a growing unit where 50% of pigs previously fed AAP and CNT diets were housed in good and the other 50% in poor hygiene conditions for 3 weeks (from week 7 to 9; challenge period). All pigs were fed a standard growing diet that was not supplemented with AAP. We measured pig growth performance, plasma indicators of inflammation, digestive integrity, and oxidative status, and scored fecal consistency. Differences were considered significant at P ≤ 0.05. RESULTS One week post-weaning, pigs fed AAP had lower plasma concentrations of haptoglobin than CNT pigs (P = 0.03). Six weeks post-weaning, plasma concentrations of diamine oxidase (DAO) were lower (P = 0.03) whereas those of vitamin E and A were greater (P ≤ 0.05) in pigs fed AAP compared to CNT pigs. The prevalence of diarrhea was higher in CNT pigs compared to AAP pigs (P < 0.01). During the challenge period, only pigs previously fed CNT diet had lower growth rate in poor than good conditions (P ≤ 0.05). They had also greater plasma concentrations of haptoglobin and oxidative stress index (OSI) and lower plasma concentrations of vitamin E in poor than good hygiene conditions (P ≤ 0.05). CONCLUSIONS Pigs fed AAP diet during post-weaning had less diarrhea and plasma concentrations of a digestive integrity marker, as well as greater plasma concentrations of antioxidant indicators during the post-weaning period. The beneficial effects of AAP supplementation persisted after the post-weaning period as evidenced by the absence of effects of the hygiene challenge on growth and health indicators in pigs previously fed APP. This clearly indicated a greater ability of pigs fed AAP to cope with the poor hygiene conditions.
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Affiliation(s)
- Alícia Zem Fraga
- grid.463756.50000 0004 0497 3491PEGASE, INRAE, Institut Agro, 35590 Saint Gilles, France ,grid.410543.70000 0001 2188 478XDepartment of Animal Science, São Paulo State University (Unesp), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, 14884-900 Brazil
| | | | - Luciano Hauschild
- grid.410543.70000 0001 2188 478XDepartment of Animal Science, São Paulo State University (Unesp), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, 14884-900 Brazil
| | | | - Martin Beaumont
- grid.508721.9GenPhySE, Université de Toulouse, INRAE, ENVT, 31326 Castanet-Tolosan, France
| | - Nathalie Le Floc’h
- grid.463756.50000 0004 0497 3491PEGASE, INRAE, Institut Agro, 35590 Saint Gilles, France
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Pre-weaning social behaviours and peripheral serotonin levels are associated with behavioural and physiological responses to weaning and social mixing in pigs. Appl Anim Behav Sci 2023. [DOI: 10.1016/j.applanim.2023.105833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Identification of Differentially Expressed miRNAs in Porcine Adipose Tissues and Evaluation of Their Effects on Feed Efficiency. Genes (Basel) 2022; 13:genes13122406. [PMID: 36553673 PMCID: PMC9778086 DOI: 10.3390/genes13122406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022] Open
Abstract
Feed efficiency (FE) is a very important trait affecting the economic benefits of pig breeding enterprises. Adipose tissue can modulate a variety of processes such as feed intake, energy metabolism and systemic physiological processes. However, the mechanism by which microRNAs (miRNAs) in adipose tissues regulate FE remains largely unknown. Therefore, this study aimed to screen potential miRNAs related to FE through miRNA sequencing. The miRNA profiles in porcine adipose tissues were obtained and 14 miRNAs were identified differentially expressed in adipose tissues of pigs with extreme differences in FE, of which 9 were down-regulated and 5 were up-regulated. GO and KEGG analyses indicated that these miRNAs were significantly related to lipid metabolism and these miRNAs modulated FE by regulating lipid metabolism. Subsequently, quantitative reverse transcription-polymerase chain reaction (qRT-PCR) of five randomly selected DEMs was used to verify the reliability of miRNA-seq data. Furthermore, 39 differentially expressed target genes of these DEMs were obtained, and DEMs-target mRNA interaction networks were constructed. In addition, the most significantly down-regulated miRNAs, ssc-miR-122-5p and ssc-miR-192, might be the key miRNAs for FE. Our results reveal the mechanism by which adipose miRNAs regulate feed efficiency in pigs. This study provides a theoretical basis for the further study of swine feed efficiency improvement.
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Miao Y, Fu C, Liao M, Fang F. Differences in Liver microRNA profiling in pigs with low and high
feed efficiency. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2022; 64:312-329. [PMID: 35530409 PMCID: PMC9039951 DOI: 10.5187/jast.2022.e4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/20/2021] [Accepted: 01/09/2022] [Indexed: 11/21/2022]
Abstract
Feed cost is the main factor affecting the economic benefits of pig industry.
Improving the feed efficiency (FE) can reduce the feed cost and improve the
economic benefits of pig breeding enterprises. Liver is a complex metabolic
organ which affects the distribution of nutrients and regulates the efficiency
of energy conversion from nutrients to muscle or fat, thereby affecting feed
efficiency. MicroRNAs (miRNAs) are small non-coding RNAs that can regulate feed
efficiency through the modulation of gene expression at the post-transcriptional
level. In this study, we analyzed miRNA profiling of liver tissues in High-FE
and Low-FE pigs for the purpose of identifying key miRNAs related to feed
efficiency. A total 212~221 annotated porcine miRNAs and 136~281 novel
miRNAs were identified in the pig liver. Among them, 188 annotated miRNAs were
co-expressed in High-FE and Low-FE pigs. The 14 miRNAs were significantly
differentially expressed (DE) in the livers of high-FE pigs and low-FE pigs, of
which 5 were downregulated and 9 were upregulated. Kyoto Encyclopedia of Genes
and Genomes analysis of liver DE miRNAs in high-FE pigs and low-FE pigs
indicated that the target genes of DE miRNAs were significantly enriched in
insulin signaling pathway, Gonadotropin-releasing hormone signaling pathway, and
mammalian target of rapamycin signaling pathway. To verify the reliability of
sequencing results, 5 DE miRNAs were randomly selected for quantitative reverse
transcription-polymerase chain reaction (qRT-PCR). The qRT-PCR results of miRNAs
were confirmed to be consistent with sequencing data. DE miRNA data indicated
that liver-specific miRNAs synergistically acted with mRNAs to improve feed
efficiency. The liver miRNAs expression analysis revealed the metabolic pathways
by which the liver miRNAs regulate pig feed efficiency.
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Affiliation(s)
- Yuanxin Miao
- College of Bioengineering,Jingchu
University of Technology, Jingmen 448000, Hubei, China
- Key Laboratory of Agricultural Animal
Genetics, Breeding and Reproduction of Ministry of Education, Huazhong
Agricultural University, Wuhan 430070, China
| | - Chuanke Fu
- Key Laboratory of Agricultural Animal
Genetics, Breeding and Reproduction of Ministry of Education, Huazhong
Agricultural University, Wuhan 430070, China
| | - Mingxing Liao
- Key Laboratory of Agricultural Animal
Genetics, Breeding and Reproduction of Ministry of Education, Huazhong
Agricultural University, Wuhan 430070, China
| | - Fang Fang
- Key Laboratory of Agricultural Animal
Genetics, Breeding and Reproduction of Ministry of Education, Huazhong
Agricultural University, Wuhan 430070, China
- National Center for International Research
on Animal Genetics, Breeding and Reproduction (NCIRAGBR), Huazhong
Agricultural University, Wuhan 430070, China
- Corresponding author: Fang Fang, Key Laboratory of
Agricultural Animal Genetics, Breeding and Reproduction of Ministry of
Education, Huazhong Agricultural University, Wuhan 430070, China. Tel:
+86-278-728-2091, E-mail:
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