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Dietary ?-Sitosterol Improves Growth Performance, Meat Quality, Antioxidant Status, and Mitochondrial Biogenesis of Breast Muscle in Broilers.


ABSTRACT: The present study evaluated effects of ?-sitosterol on growth performance, meat quality, oxidative status, and mitochondrial biogenesis of breast muscle in broilers. One-day-old chicks were allocated to five treatments of six replicates. Broilers were fed a basal diet supplemented either with 0 (control), 40, 60, 80, or 100 mg/kg ?-sitosterol for 42 days. ?-sitosterol linearly and quadratically reduced feed/gain ratio, lightness24h and cooking loss24h in breast muscle, whereas 2, 2-diphenyl-1-picrylhydrazyl scavenging activity of breast muscle followed an opposite trend. ?-sitosterol linearly decreased drip loss24h and malondialdehyde content, whereas linearly increased pH24h, superoxide dismutase activity, and mRNA abundances of peroxisome proliferator-activated receptor ? coactivator 1? (PCG-1?) and mitochondrial transcription factor A (TFAM) in breast muscle. Compared with control, levels of ?-sitosterol higher than 40 mg/kg reduced feed/gain ratio, muscular lightness24h, cooking loss24h, and malondialdehyde level, whereas increased muscular 2, 2-diphenyl-1-picrylhydrazyl scavenging activity, and mRNA abundances (except 60 mg/kg) of PCG-1? and TFAM. Eighty milligram/kilogram ?-sitosterol increased muscular pH24h and superoxide dismutase activity, but decreased its drip loss24h. Therefore, ?-sitosterol could improve growth performance and meat quality, oxidative status, and mitochondrial biogenesis of breast muscle in broilers. Furthermore, supplementation level of 80 mg/kg ?-sitosterol is recommended for broiler diets.

SUBMITTER: Cheng Y 

PROVIDER: S-EPMC6466163 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Dietary β-Sitosterol Improves Growth Performance, Meat Quality, Antioxidant Status, and Mitochondrial Biogenesis of Breast Muscle in Broilers.

Cheng Yefei Y   Chen Yueping Y   Li Jun J   Qu Hengman H   Zhao Yurui Y   Wen Chao C   Zhou Yanmin Y  

Animals : an open access journal from MDPI 20190226 3


The present study evaluated effects of β-sitosterol on growth performance, meat quality, oxidative status, and mitochondrial biogenesis of breast muscle in broilers. One-day-old chicks were allocated to five treatments of six replicates. Broilers were fed a basal diet supplemented either with 0 (control), 40, 60, 80, or 100 mg/kg β-sitosterol for 42 days. β-sitosterol linearly and quadratically reduced feed/gain ratio, lightness<sub>24h</sub> and cooking loss<sub>24h</sub> in breast muscle, wher  ...[more]

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