Effect of fattening period length on intramuscular and subcutaneous fatty acid profiles in Iberian pigs finished in the montanera sustainable system

Ayuso, Dolores; González, Ana M.; Peña, Francisco; Hernández-García, F.I.; Izquierdo, M.

doi:10.20944/preprints202008.0276.v1

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…In the Iberian Peninsula, the Iberian pig is an autochthonous breed. The Iberian pig system is linked to the dehesa lands of Quercus spp., in the Iberian Peninsula [19]. The abundant food provided by acorns is used to fatten the pigs from early November to late February [20].…”

Section: Acorn Characteristicsmentioning

confidence: 99%

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Quality of Pork Meat Fed with Acorns (Quercus spp.)

Flores¹

2023

Nut Crops - New Insights

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Pork is one of the most popular foods in Chile. Consumers are concerned about their nutritional quality and about the characteristics of the production systems. Outdoor production systems are the most valued by consumers due to animal welfare conditions related to the nutritional quality of the product. On the other hand, intensive or traditional confined pig production systems represent an environment that alters the nutrients in meat products. For this reason, outdoor production systems become more important, especially when nuts (Quercus spp.) are included in pig feeding. Acorn nuts have a high level of fatty acids transferred to the meat, increasing flavor and juiciness. This proposal is a bibliographic review that will also include the advantage of controlling an invasive species, such as wild boar for a small producer in southern Chile, who could obtain a meat product with healthy fatty acids, favoring the sustainability of the ecosystem.

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Section: Acorn Characteristicsmentioning

confidence: 99%

“…In addition, it should be noticed that the free-range systems, where the Iberian pig predominates, also get outstanding values in meat at levels of essential fatty acids. The high sensory value from pig meat under extensive systems is attributed to essential fatty acids [38], especially in dry cured products with a strong flavor [19,39,40].…”

Section: Tablementioning

confidence: 99%

Quality of Pork Meat Fed with Acorns (Quercus spp.)

Flores¹

2023

Nut Crops - New Insights

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Long-Term Effect of Maternal Antioxidant Supplementation on the Lipid Profile of the Progeny According to the Sow’s Parity Number

Gómez,

Laviano,

García-Casco

et al. 2024

Antioxidants

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Pig feeding prior to the extensive fattening phase might affect the final lipid profile and product quality. This study evaluates how maternal supplementation with vitamin E (VITE) (100 mg/kg), hydroxytyrosol (HXT) (1.5 mg/kg), or combined administration (VE + HXT) affects the piglet’s plasma and tissues’ fatty acid profiles and lipid stability according to the sow’s parity number (PN), as well as the possible changes to the lipid profile after extensive feeding. The sows’ PN affected the total fatty acid profile of plasma, muscle, and liver of piglets, with lower Δ-9 and Δ-6 desaturase indices but higher Δ-5 in those from primiparous (P) than multiparous (M) sows. Dietary VITE was more effective at decreasing C16:0 and saturated fatty acids in the muscle of piglets born from M than P sows, and modified the liver phospholipids in a different way. Sows’ supplementation with HXT increased C18:2n-6 in triglycerides and polyunsaturated fatty acids (PUFA) in muscle phospholipids. In the liver, HXT supplementation also increased free-PUFA and free-n-3 fatty acids. However, lipid oxidation of piglets’ tissues was not affected by the antioxidant supplementation, and it was higher in the livers of piglets born from M sows. The fatty acid profile in the muscle of pigs after extensive feeding was not affected by the PN, but it was by the sows’ antioxidant supplementation, with positive effects on quality by both compounds.

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Genome-Wide Expression Profiling and Networking Reveals an Imperative Role of IMF-Associated Novel CircRNAs as ceRNA in Pigs

Yousuf

Feng

et al. 2022

Cells

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Intramuscular fat (IMF) deposition is a biological process that has a strong impact on the nutritional and sensorial properties of meat, with relevant consequences on human health. Pork loins determine the effects of marbling on the sensory attributes and meat quality properties, which differ among various pig breeds. This study explores the crosstalk of non-coding RNAs with mRNAs and analyzes the potential pathogenic role of IMF-associated competing endogenous RNA (ceRNA) in IMF tissues, which offer a framework for the functional validation of key/potential genes. A high-throughput whole-genome transcriptome analysis of IMF tissues from longissimus dorsi muscles of Large White (D_JN) and Laiwu (L_JN) pigs resulted in the identification of 283 differentially expressed circRNAs (DECs), including two key circRNAs (circRNA-23437, circRNA-08840) with potential binding sites for multiple miRNAs regulating the whole network. The potential ceRNA mechanism identified the DEC target miRNAs-mRNAs involved in lipid metabolism, fat deposition, meat quality, and metabolic syndrome via the circRNA-miRNA-mRNA network, concluding that ssc-mir-370 is the most important target miRNA shared by both key circRNAs. TGM2, SLC5A6, ECI1, FASN, PER1, SLC25A34, SOD1, and COL5A3 were identified as hub genes through an intensive protein-protein interaction (PPI) network analysis of target genes acquired from the ceRNA regulatory network. Functional enrichments, pathway examinations, and qRT-PCR analyses infer their implications in fat/cholesterol metabolism, insulin secretion, and fatty acid biosynthesis. Here, circRNAs and miRNA sequencing accompanied by computational techniques were performed to analyze their expressions in IMF tissues from the longissimus dorsi muscles of two pig breeds. Their target gene evolutionary trajectories, expression profiling, functional enrichments, subcellular localizations, and structural advances with high-throughput protein modeling, following genomic organizations, will provide new insights into the underlying molecular mechanisms of adipocyte differentiation and IMF deposition and a much-needed qualitative framework for future research to improve meat quality and its role as a biomarker to treat lipid metabolic syndromes.

show abstract

Effect of fattening period length on intramuscular and subcutaneous fatty acid profiles in Iberian pigs finished in the montanera sustainable system

Cited by 5 publications

References 36 publications

Quality of Pork Meat Fed with Acorns (Quercus spp.)

Quality of Pork Meat Fed with Acorns (Quercus spp.)

Long-Term Effect of Maternal Antioxidant Supplementation on the Lipid Profile of the Progeny According to the Sow’s Parity Number

Genome-Wide Expression Profiling and Networking Reveals an Imperative Role of IMF-Associated Novel CircRNAs as ceRNA in Pigs

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