多不饱和脂肪酸
脂肪组织
谷胱甘肽过氧化物酶
奥维斯
化学
脂肪酸
作文(语言)
内科学
内分泌学
超氧化物歧化酶
生物
动物科学
食品科学
氧化应激
生物化学
医学
语言学
哲学
生态学
作者
Zhanhong Gao,Sayed Haidar Abbas Raza,Boyan Ma,Zhiyou Wang,Khairiah Mubarak Alwutayd,Waleed Al Abdulmonem,Yousef Alharbi,Abdullah S. M. Aljohani,Shengzhen Hou,Linsheng Gui
标识
DOI:10.1080/09712119.2023.2203725
摘要
This study was carried out to evaluate the effects of dietary concentrate: forage (C: F) ratio on fat deposition, fatty acid composition, oxidative stability and mRNA expression levels of sirtuins genes associated with adipose tissue metabolism of subcutaneous fat in Black Tibetan sheep. Three diets with different C: F (HC: 70:30, IC:50:50 and LC: 30:70) were fed to fifteen weaned male lambs (2-month-old, 10.05 ± 0.96 Kg). The experiment lasted for 120 d. Five lambs from each group were randomly selected and slaughtered at the end of the experiment. The subcutaneous fat thicknesses increased with increasing concentrate level (P < 0.05). The concentration of polyunsaturated fatty acid (PUFA), C15:1 and C18:2n decreased by feeding the HC diet (P < 0.05). Both glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) activities significantly increased as dietary concentration levels decreased (P < 0.05). Additionally, SIRT1 and SIRT2 expression level was downregulated (P < 0.05) with increasing concentration supplementation (P < 0.05 and P < 0.05, respectively). In conclusion, the addition of 70% concentration supplementation is not recommended in Black Tibetan sheep, considering that no benefits were observed for nutrient utilization, oxidative stability or economic returns, while the supplementation of C: F at 50:50 proved to be suitable for finishing lambs.
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