Rearing pattern alters porcine myofiber type, fat deposition, associated microbial communities and functional capacity
العنوان: | Rearing pattern alters porcine myofiber type, fat deposition, associated microbial communities and functional capacity |
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المؤلفون: | Xiao-ming Men, Zi wei Xu, Jie Wu, Ke Ke Qi |
المصدر: | BMC Microbiology, Vol 19, Iss 1, Pp 1-12 (2019) BMC Microbiology |
بيانات النشر: | Research Square Platform LLC, 2019. |
سنة النشر: | 2019 |
مصطلحات موضوعية: | Microbiology (medical), Inosine monophosphate, Meat, Swine, lcsh:QR1-502, Adipose tissue, Microbiology, Fat deposition, lcsh:Microbiology, Myofiber type, Fats, Feces, 03 medical and health sciences, Clostridium, Myofibrils, Gut micobiota, Animals, Humans, Food science, Animal Husbandry, 0303 health sciences, Bacteria, biology, 030306 microbiology, Microbiota, Muscles, Lipid metabolism, biology.organism_classification, Gastrointestinal Microbiome, Metabolic pathway, Adipose Tissue, Gluconeogenesis, Taste, Adipose triglyceride lipase, Rearing pattern, Intramuscular fat, Research Article |
الوصف: | Background The Chinese believe that the meat of pigs reared in the past with free range tastes better than that of the pigs reared indoor on a large scale today. Gastrointestinal microflora is closely associated with the main factor of meat flavour, including fibre characteristics and lipid metabolism. Our method in this study involved different raising patterns within the semi free-grazing farm (FF) or indoor feeding farm (DF), the measurement of fat deposition and myofiber type by paraffin section and reverse transcription polymerase chain reaction and the identification of microbiome and functional capacities associated with meat quality through metagenomic sequencing. Results Results showed that the fat area in muscle and adipose tissue and the myofiber density significantly increased in the pigs of the FF group. The relative abundance of bacteria associated with lipid metabolism, such as g_Oscillibacter, in the feces of the FF group was higher than that in DF group, and the relative abundance of some bacteria with probiotic function, including g_Lactobacillus and g_Clostridium, was lower than that in DF group. The abundance of g_Clostridium was significantly positively correlated with the intramuscular fat area, whereas health-related bacteria, such as g_Butyricicoccus, g_Eubacterium, g_Phascolarctobacterium and g_Oribacterium, was significantly negatively correlated with abdominal fat area, myofiber density and adipose triglyceride lipase (ATGL) mRNA expression. KEGG analysis showed that pigs raised in semi free-grazing farm can activate the pathway of inosine monophosphate (IMP) biosynthesis, glycolysis/gluconeogenesis and alanine, aspartate and glutamate metabolism. Conclusions Free range feeding improves meat quality by changing the fibre type, myofiber density and metabolic pathways related to flavour amino acids, IMP or glycolysis/gluconeogenesis in muscle. However, prolonged feeding cycle increases fat deposition and associated microbial communities. Electronic supplementary material The online version of this article (10.1186/s12866-019-1556-x) contains supplementary material, which is available to authorized users. |
URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::adbcd7310e417d93b15a8f8480a6eea0 https://doi.org/10.21203/rs.2.9516/v2 |
حقوق: | OPEN |
رقم الأكسشن: | edsair.doi.dedup.....adbcd7310e417d93b15a8f8480a6eea0 |
قاعدة البيانات: | OpenAIRE |
الوصف غير متاح. |