PMID- 31325379 OWN - NLM STAT- MEDLINE DCOM- 20191213 LR - 20200903 IS - 1525-3163 (Electronic) IS - 0021-8812 (Print) IS - 0021-8812 (Linking) VI - 97 IP - 9 DP - 2019 Sep 3 TI - Effect of divergence in residual feed intake on expression of lipid metabolism-related genes in the liver of meat-type ducks1. PG - 3947-3957 LID - 10.1093/jas/skz241 [doi] AB - Lipid metabolism is considered one of the important factors affecting residual feed intake (RFI). However, the relationship between RFI and expression of lipid metabolism-related genes is unknown in meat-type ducks. To address this issue, a total of 1,000 male meat-type ducks with similar body weight were randomly selected to measure body weight gain and feed intake from 21 to 42 d of age to estimate RFI. The 8 greatest- (high RFI [HRFI]) and lowest- (low RFI [LRFI]) ranking birds were then selected for the present study. Relative expressions of key genes, namely sirtuin 1 (Sirt1), forkhead box O1 (Foxo1), peroxisome proliferator-activated receptor gamma (PPARgamma), sterol regulatory element-binding transcription factor 1c (SREBP-1c), fas cell surface death receptor (FAS), acetyl-CoA carboxylase alpha (ACC), carnitine palmitoyltransferase 1A (CPT1A), and acyl-CoA oxidase 1 (ACOX1), were then determined in the HRFI and LRFI ducks by quantitative PCR. The results showed that RFI, feed conversion ratio (FCR), and average daily feed intake (ADFI) were significantly lower (P < 0.05) in LRFI ducks than in HRFI ducks. In addition, expression of Sirt1, Foxo1, CPT1A, and ACOX1 were significantly higher in LRFI ducks than in HRFI ducks (P < 0.05), whereas PPARgamma and FAS expression levels were significantly lower in LRFI ducks than in HRFI ducks (P < 0.01). Correlation analysis showed that Sirt1, CPT1A, and ACOX1 expressions were significantly negatively correlated with FCR (r = -0.81 to -0.93; P < 0.01), whereas PPARgamma and FAS expressions were significantly positively correlated with FCR (r = 0.74 to 0.87; P < 0.01). PPARgamma expression was significantly positively correlated with RFI (r = 0.83; P < 0.01), whereas CPT1A and ACOX1 expressions were significantly negatively correlated with RFI (r = -0.84 to -0.89; P < 0.01). Sirt1 mRNA expression was positively correlated with Foxo1, CPT1A, and ACOX1 mRNA expression (r = 0.78 to 0.92; P < 0.01). Association of Foxo1 with CPT1A and ACOX1 was positive (r = 0.88 to 0.96; P < 0.01). These results suggest that genes related to fatty acid oxidation are upregulated in the liver of ducks with high feed efficiency, while genes associated with lipid synthesis are downregulated. Furthermore, the inclusion of lipid metabolism-related genes in future breeding programs might be beneficial for selecting ducks with greater feed efficiency phenotype. CI - (c) The Author(s) 2019. Published by Oxford University Press on behalf of the American Society of Animal Science. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Jin, Sihua AU - Jin S AD - College of Animal Science and Technology, Anhui Agricultural University, Hefei, China. FAU - Yang, Lei AU - Yang L AD - College of Animal Science and Technology, Anhui Agricultural University, Hefei, China. FAU - Fan, Xinfeng AU - Fan X AD - College of Animal Science and Technology, Anhui Agricultural University, Hefei, China. FAU - Wu, Minghui AU - Wu M AD - College of Animal Science and Technology, Anhui Agricultural University, Hefei, China. FAU - Xu, Yuan AU - Xu Y AD - College of Animal Science and Technology, Anhui Agricultural University, Hefei, China. FAU - Chen, Xianzen AU - Chen X AD - Anhui Provincial Key Laboratory of Local Animal Genetic Resources Conservation and Biobreeding, Hefei, China. FAU - Lin, Zhiqiang AU - Lin Z AD - Huangshan Qiangying Duck Breeding Co. Ltd., Huangshan, China. FAU - Geng, Zhaoyu AU - Geng Z AD - College of Animal Science and Technology, Anhui Agricultural University, Hefei, China. LA - eng PT - Journal Article PL - United States TA - J Anim Sci JT - Journal of animal science JID - 8003002 RN - 0 (Fatty Acids) RN - 0 (Genetic Markers) SB - IM MH - Animal Feed/*analysis MH - Animals MH - Body Weight/genetics MH - Breeding MH - Ducks/*genetics/physiology MH - Eating/*genetics MH - Fatty Acids/metabolism MH - Gene Expression Regulation/*genetics MH - Genetic Markers/genetics MH - Lipid Metabolism/*genetics MH - Liver/metabolism MH - Male MH - Oxidation-Reduction MH - Phenotype MH - Red Meat/*analysis PMC - PMC6735845 OTO - NOTNLM OT - association OT - gene expression OT - lipid metabolism OT - meat-type ducks OT - residual feed intake EDAT- 2019/07/22 06:00 MHDA- 2019/12/18 06:00 PMCR- 2020/09/03 CRDT- 2019/07/21 06:00 PHST- 2019/04/20 00:00 [received] PHST- 2019/07/17 00:00 [accepted] PHST- 2019/07/22 06:00 [pubmed] PHST- 2019/12/18 06:00 [medline] PHST- 2019/07/21 06:00 [entrez] PHST- 2020/09/03 00:00 [pmc-release] AID - 5536613 [pii] AID - skz241 [pii] AID - 10.1093/jas/skz241 [doi] PST - ppublish SO - J Anim Sci. 2019 Sep 3;97(9):3947-3957. doi: 10.1093/jas/skz241.