Impact of dietary Lactobacillus supplementation on intramuscular fat deposition and meat quality of Sunit sheep. Issue 8 (2nd May 2022)

• Record Type: Journal Article
• Authors: Yao, Duo; Su, Rina; Zhang, Yue; Wang, Bohui; Hou, Yanru; Luo, Yulong; Sun, Lina; Guo, Yueying; Jin, Ye
• Is Part Of: Journal of food biochemistry. Volume 46:Issue 8(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-05-02
• Subjects: intramuscular fat -- Lactobacillus feed -- meat quality -- metabonomics -- Sunit sheep; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; Biochemistry -- Periodicals; 664.024
• DOI: 10.1111/jfbc.14207
• Languages: English
• ISSNs: 0145-8884

Abstract

Abstract: To investigate the impacts of dietary Lactobacillus supplementation on meat quality such as edible quality and nutritional value of Sunit sheep, a 90‐day feeding experiment ( Lactobacillus dietary group, R group; non‐ Lactobacillus dietary group, C group) using twelve 3‐month‐old Sunit sheep was conducted. The deposition of intramuscular fat (IMF) was increased ( p < .05) while the share force and cooking loss were decreased ( p < .05) in the R group compared with the C group. The proportions of seven kinds of fatty acids (FAs) have changed significantly ( p < .05), especially with higher functional FAs and lower trans‐FA in the R group. Metabonomics analysis showed that the metabolites and pathway‐related lipid syntheses, such as carnitine cycle, tricarboxylic acid cycle, and glycerophosphocholine metabolic pathway, have significantly changed in the R group. The Lactobacillus dietary supplements impacted the variation of IMF deposition and FAs composition by altering the lipid metabolism pathways of Sunit sheep and then changed the edible quality and nutritional value. Practical applications: It is well known that the intramuscular fat (IMF) and fatty acids composition in livestock is positively correlated with various aspects of meat quality such as edible quality and nutritional value, which are related to consumer preference. The present study analyzed the effects of Lactobacillus supplement on the intramuscular fat deposition and meat quality of Sunit sheep, which resulted in the increase of IMF, and the differences of fatty acids composition, especially the functional fatty acids. It was explored the mechanism of Lactobacillus affect the variation of lipid metabolism pathways and key metabolites in sheep, which suggested that altering the feeding regimen could improve the meat quality of agri‐animals. Abstract : Lactobacillus dietary supplement can increase the content of intramuscular fat, so that improved meat quality of Sunit sheep; Lactobacillus dietary supplement can enrich the quantity of fatty acids in longissimus thoracis of Sunit sheep, especially the functional fatty acids. The metabolites and pathways related lipid synthesis in longissimus thoracis were induced by Lactobacillus dietary supplement.