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Li Y, Tao X, Zhao P, Zhou J, Ao X. Effects of slaughter weight on carcass characteristics, meat quality, and metabolomics profiling in the longissimus dorsi muscle of Tianfu finishing pigs. Front Vet Sci 2024; 11:1420634. [PMID: 39005725 PMCID: PMC11239573 DOI: 10.3389/fvets.2024.1420634] [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: 04/20/2024] [Accepted: 06/10/2024] [Indexed: 07/16/2024] Open
Abstract
In order to investigate the effect of slaughter weight (SW) on carcass characteristics and meat quality, we measured the carcass characteristics, meat quality, and amino acid metabolomics characteristics of longissimus dorsi (LD) muscle from Tianfu finishing (TF) pigs. Based on SW, 13 pigs were divided into three groups (100-kg group, 125-kg group, and 150-kg group with 3, 5, 5 pigs in each group, respectively). Raising SW to 125 kg or 150 kg increased average backfat thickness (P < 0.01) and intramuscular fat content (P < 0.01), and decreased shear force (P < 0.01). A total of 231 amino acid metabolome from three amino acid classes identified with metabolomics were analyzed, and 93 differentially expressed metabolites (DEMs) were identified (69 up-regulated DEMs and 24 down-regulated DEMs). The DEMs, including urea, 3-iodo-L-tyrosine, N-glycyl-L-leucine, and N, N-dimethylglycine with amino acid metabolism, were significantly induced (P < 0.01). KEGG pathway analysis showed that these DEMs were significantly enriched (P < 0.01) in 135 metabolism pathways, including pathways related to amino acid metabolism, such as arginine and proline metabolism, glycine, serine and threonine metabolism, alanine, aspartate and glutamate metabolism, tryptophan metabolism, and beta-alanine metabolism. Our research findings provided new insights into the impact of SW on amino acid distribution and theoretical support for genetic breeding of meat quality of TF pigs. However, raising SW to 125 kg, or more, decreased the carcass leanness of live TF pigs and had no benefits to pork quality attributes.
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Affiliation(s)
- Yuanfeng Li
- School of Life Sciences, Liaocheng University, Liaocheng, Shandong, China
| | - Xuan Tao
- Faculty of Quality Management and Inspection & Quarantine, Yibin University, Yibin, China
- Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu, China
| | - Pinyao Zhao
- Faculty of Quality Management and Inspection & Quarantine, Yibin University, Yibin, China
- Solid-state Fermentation Resource Utilization Key Laboratory of Sichuan Province, Yibin, China
- Sichuan Higher Education Engineering Research Center for Agri-Food Standardization and Inspection, Yibin, China
| | - Jianchuan Zhou
- School of Animal Science and Technology, China Agricultural University, Beijing, China
- Sichuan Techlex Industrial Co. Ltd., Mianyang, China
| | - Xiang Ao
- Faculty of Quality Management and Inspection & Quarantine, Yibin University, Yibin, China
- Sichuan Techlex Industrial Co. Ltd., Mianyang, China
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Liang Y, Chen R, Liu H, Han L, Yin S. Glimpsing the Future of Animal Welfare through a Bottle of Milk: Insights from Chinese University Students. Foods 2023; 12:4044. [PMID: 37959163 PMCID: PMC10650918 DOI: 10.3390/foods12214044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/24/2023] [Accepted: 11/03/2023] [Indexed: 11/15/2023] Open
Abstract
The consumption patterns of university students hold the power to significantly influence market trends. This study illuminates the escalating emphasis on animal welfare in these students' purchasing choices, specifically concerning milk products. Utilizing a discrete choice experiment, we identified a pronounced preference among students for milk products with animal welfare certifications. Students were segmented into three categories based on their motivations: "Quality-Oriented" (20.55%), "Emotionally Intuitive" (30.67%), and "Quality-Emotion Balanced" (48.77%). The "Emotionally Intuitive" group manifested the most robust inclination toward such certifications. Based on these findings, we recommend tailored market strategies targeting these distinct segments. Moreover, our findings emphasize the importance of intensifying animal welfare education, shaping a market aligned with animal welfare principles, and fostering a broader societal environment attuned to animal welfare.
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Affiliation(s)
- Yaoming Liang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China;
- College of Economics & Management, South China Agricultural University, Guangzhou 510642, China; (R.C.); (H.L.)
| | - Ruiqi Chen
- College of Economics & Management, South China Agricultural University, Guangzhou 510642, China; (R.C.); (H.L.)
| | - Hongfu Liu
- College of Economics & Management, South China Agricultural University, Guangzhou 510642, China; (R.C.); (H.L.)
| | - Li Han
- College of Public Management, South China Agricultural University, Guangzhou 510642, China
| | - Shu Yin
- Student Affairs Department (Graduate Student Affairs Department) of the Party Committee, South China Agricultural University, Guangzhou 510642, China
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Qi X, Feng T, Ma Z, Zheng L, Liu H, Shi Z, Shen C, Li P, Wu P, Ru Y, Li D, Zhu Z, Tian H, Wu S, Zheng H. Deletion of DP148R, DP71L, and DP96R Attenuates African Swine Fever Virus, and the Mutant Strain Confers Complete Protection against Homologous Challenges in Pigs. J Virol 2023; 97:e0024723. [PMID: 37017515 PMCID: PMC10134827 DOI: 10.1128/jvi.00247-23] [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: 02/23/2023] [Accepted: 03/10/2023] [Indexed: 04/06/2023] Open
Abstract
The African swine fever virus (ASFV) has caused a devastating pandemic in domestic and wild swine, causing economic losses to the global swine industry. Recombinant live attenuated vaccines are an attractive option for ASFV treatment. However, safe and effective vaccines against ASFV are still scarce, and more high-quality experimental vaccine strains need to be developed. In this study, we revealed that deletion of the ASFV genes DP148R, DP71L, and DP96R from the highly virulent isolate ASFV CN/GS/2018 (ASFV-GS) substantially attenuated virulence in swine. Pigs infected with 104 50% hemadsorbing doses of the virus with these gene deletions remained healthy during the 19-day observation period. No ASFV infection was detected in contact pigs under the experimental conditions. Importantly, the inoculated pigs were protected against homologous challenges. Additionally, RNA sequence analysis showed that deletion of these viral genes induced significant upregulation of the host histone H3.1 gene (H3.1) and downregulation of the ASFV MGF110-7L gene. Knocking down the expression of H3.1 resulted in high levels of ASFV replication in primary porcine macrophages in vitro. These findings indicate that the deletion mutant virus ASFV-GS-Δ18R/NL/UK is a novel potential live attenuated vaccine candidate and one of the few experimental vaccine strains reported to induce full protection against the highly virulent ASFV-GS virus strain. IMPORTANCE Ongoing outbreaks of African swine fever (ASF) have considerably damaged the pig industry in affected countries. Thus, a safe and effective vaccine is important to control African swine fever spread. Here, an ASFV strain with three gene deletions was developed by knocking out the viral genes DP148R (MGF360-18R), NL (DP71L), and UK (DP96R). The results showed that the recombinant virus was completely attenuated in pigs and provided strong protection against parental virus challenge. Additionally, no viral genomes were detected in the sera of pigs housed with animals infected with the deletion mutant. Furthermore, transcriptome sequencing (RNA-seq) analysis revealed significant upregulation of histone H3.1 in virus-infected macrophage cultures and downregulation of the ASFV MGF110-7L gene after viral DP148R, UK, and NL deletion. Our study provides a valuable live attenuated vaccine candidate and potential gene targets for developing strategies for anti-ASFV treatment.
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Affiliation(s)
- Xiaolan Qi
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Tao Feng
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Zhao Ma
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Linlin Zheng
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Huanan Liu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Zhengwang Shi
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Chaochao Shen
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Pan Li
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Panxue Wu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yi Ru
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Dan Li
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Zixiang Zhu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Hong Tian
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Sen Wu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Haixue Zheng
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
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