Nano-Se exhibits limited protective effect against heat stress induced poor breast muscle meat quality of broilers compared with other selenium sources  

作　　者：Jinzhong Jing Jiayi Wang Qian Wu Shenggang Yin Zhen He Jiayong Tang Gang Jia Guangmang Liu Xiaoling Chen Gang Tian Jingyi Cai Bo Kang Lianqiang Che Hua Zhao 

机构地区：[1]Key Laboratory for Animal Disease‑Resistance Nutrition of Ministry of Education,of China Ministry of Agriculture and Rural Affairs,of Sichuan Province,Animal Nutrition Institute,Sichuan Agricultural University,Chengdu 611130,Sichuan,China [2]College of Animal Science and Technology,Sichuan Agricultural University,Chengdu 611130,Sichuan,China

出　　处：《Journal of Animal Science and Biotechnology》2024年第6期2571-2588,共18页畜牧与生物技术杂志(英文版)

基　　金：supported partly by the National Natural Science Foundation of China(No.31772643);the Special Research Funding for Discipline Construction in Sichuan Agricultural University(No.03570126)。

摘　　要：Background At presenti heat stress(HS)has become a key factor that impairs broiler breeding industry,which causes growth restriction and poor meat quality of broilers.S elenium(Se)is an excellent antioxidant and plays a unique role in meat quality improvement.Recent years,nano-selenium(NanoSe)has received tremendous attention in livestock production,due to its characteristic and good antibacterial performance in vitro.Here,we developed the heat stressed-broiler model to investigate the protective effects of NanoSe on growth performance and meat quality of broilers and compare whether there are differences with that of other Se sources(Sodium selenite,SS;Selenoyeast,SeY;Selenomethioninec SeMet).Results HS jeopardized the growth performance and caused poor meat quality of breast muscle in broilers,which were accompanied by lowered antioxidant capacity,increased glycolysis,increased anaerobic metabolism of pyruvate,mitochondrial stress and abnormal mitochondrial tricarboxylic acid(TCA)cycle.All Se sources supplementation exhibited protective effects,which increased the Se concentration and promoted the expression of selenoproteins,improved the mitochondrial homeostasis and the antioxidant capacity,and promoted the TCA cycle and the aerobic metabolism of pyruvate,thus improved the breast muscle meat quality of broilers exposed to HS.However,unlike the other three Se sources,the protective effect of NanoSe on meat quality of heat stressed-broilers was not ideal,which exhibited limited impact on the pH value,drip loss and cooking loss of the breast muscle.Compared with the other Se sources,broilers received NanoSe showed the lowest levels of slow MyHC,the highest levels of fast MyHC and glycogen,the highest mRNA levels of glycolysis-related genes(PFKM and PKM),the highest protein expression of H5P60 and CLPP,and the lowest enzyme activities of GSH-Px,citroyl synthetase(CS)and isocitrate dehydrogenase(ICD)in breast muscle.Consistent with the SS,the Se deposition in breast muscle of broilers received NanoSe was lower tha

关 键 词：BROILERS Heat stress Meat quality Mitochondrial stress Nano-Se Se sources 

分 类 号：S831[农业科学—畜牧学]