三穗鸭不同体质量组胸肌的能量代谢物差异鉴定
Difference Identification of Energy Metabolites in Pectoral Muscles of Sansui Ducks with Different Body Weight Groups
能量平衡与代谢调节影响畜禽食物摄入、蛋白质合成和脂肪沉积,进而影响体质量和屠宰性状。为研究能量代谢物含量差异与三穗鸭成年体质量的关联性,从480只三穗鸭母鸭中依据体型外貌及成年体质量表型选取44只三穗鸭母鸭,组成高、低体质量组,采用靶向代谢组技术对160日龄三穗鸭胸肌中的三羧酸循环、糖酵解途径、磷酸戊糖途径和氧化磷酸化等4种能量代谢途径中的32种能量代谢物含量进行鉴定,并利用R包软件对代谢物含量数据进行质量评价、主成分分析和组间差异代谢物筛选。结果表明,三穗鸭胸肌中,乳酸含量最高,其次依次为6磷酸葡萄糖、草酰乙酸和6磷酸果糖。采用正交偏最小二乘判别分析(OPLS-DA)方法,筛选到显著差异代谢物还原型烟酰胺腺嘌呤二核苷酸磷酸(NADPH)和苹果酸(MA)。组间比较分析结果表明,高体质量组中的NADPH含量显著高于低体质量组,MA含量极显著低于低体质量组。
Energy balance and metabolic regulation affect food intake, protein synthesis, and fat deposition in livestock and poultry, thereby affect body weight and slaughter traits. In order to study the correlation between energy metabolite content difference and adult body weight of Sansui ducks, in this study, 44 female Sansui ducks were selected from 480 female Sansui ducks according to their body shape and adult body weight phenotype to organize groups of high and low body weight. Targeted metabolome technology was used to identify 32 energy metabolites in four energy metabolic pathways(tricarboxylic acid cycle, glycolysis pathway, pentose phosphate pathway, and oxidative phosphorylation) in pectoral muscles of 160-day-old Sansui ducks. R-package software was used to conduct quality evaluation, principal component analysis, and intergroup differential metabolite screening of the metabolite content data.The results showed that the content of lactic acid was the highest in pectoral muscles, followed by glucose 6 phosphate, oxaloacetic acid, and fructose 6 phosphate. Orthogonal partial least squares discriminant analysis(OPLS-DA) was adopted and the significantly differentiated metabolites were reduced nicotinamide adenine dinucleotide phosphate(NADPH) and Malic acid(MA).The results of intergroup comparison and analysis showed that NADPH content in the high body weight group was significantly higher than that in the low body weight group, and MA content was extremely significantly lower than that in the low body weight group.
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贵州省科技计划(黔科合支撑[2022]一般096号)
贵州省农业厅家禽专班项目(2022)
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