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Transcriptomic and epigenomic landscapes of muscle growth during the postnatal period of broilers

Journal of animal Science and Biotechnology 2024年第5期15卷 1851-1865页

作者： Shuang Gu Qiang Huang Yuchen Jie Congjiao Sun Chaoliang Wen Ning Yang State Key Laboratory of animal Biotech breeding and Frontier Science Center for Molecular Design breeding China Agricultural UniversityBeijing 100193China National Engineering Laboratory for animal breeding and Key Laboratory of animal Genetics Breeding and ReproductionMinistry of Agriculture and Rural AffairsDepartment of Animal Genetics and BreedingCollege of Animal Science and Technology China Agricultural UniversityBeijing 100193China. Sanya Institute of China Agricultural University Hainan 572025China

Background Broilers stand out as one of the fastest-growing livestock globally,making a substantial contribution to animal meat ***,the molecular and epigenetic mechanisms underlying the rapid growth and development of broiler chickens are still *** study aims to explore muscle development patterns and regulatory networks during the postnatal rapid growth phase of fast-growing *** measured the growth performance of Cornish(CC)and White Plymouth Rock(RR)over a 42-d *** muscle samples from both CC and RR were randomly collected at day 21 after hatching(D21)and D42 for RNA-seq and ATAC-seq library *** The consistent increase in body weight and pectoral muscle weight across both breeds was observed as they matured,with CC outpacing RR in terms of weight at each stage of *** expression analysis identified 398 and 1,129 genes in the two dimensions of breeds and ages,respectively.A total of 75,149 ATAC-seq peaks were annotated in promoter,exon,intron and intergenic regions,with a higher number of peaks in the promoter and intronic *** age-biased genes and breed-biased genes of RNA-seq were combined with the ATAC-seq data for subsequent *** results spotlighted the upregulation of ACTC1 and FDPS at D21,which were primarily associated with muscle structure development by gene cluster ***,a noteworthy upregulation of MUSTN1,FOS and TGFB3 was spotted in broiler chickens at D42,which were involved in cell differentiation and muscle regeneration after injury,suggesting a regulatory role of muscle growth and *** This work provided a regulatory network of postnatal broiler chickens and revealed ACTC1 and MUSTN1 as the key responsible for muscle development and *** findings highlight that rapid growth in broiler chickens triggers ongoing muscle damage and subsequent *** findings provide a foundation for future research to i

关键词： ATAC-seq Broiler Pectoral muscle development Rapid growth RNA-seq

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Maternal resveratrol improves the intestinal health and weight gain of suckling piglets during high summer temperatures: The involvement of exosome-derived microRNAs and immunoglobin in colostrum

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animal Nutrition 2024年第2期17卷 36-48页

作者： Changming Hong Yujian Huang Guan Yang Xiaolu Wen Li Wang Xuefen Yang Kaiguo Gao Zongyong Jiang Hao Xiao State Key Laboratory of Swine and Poultry breeding Industry Institute of Animal ScienceGuangdong Academy of Agricultural Sciences Key Laboratory of animal Nutrition and Feed Science in South China Ministry of Agriculture and Rural AffairsGuangdong Public Laboratory of Animal Breeding and Nutrition Guangdong Provincial Key Laboratory of animal Nutrition Control Institute of Subtropical Animal Nutrition and FeedCollege of Animal ScienceSouth China Agricultural University department of Infectious Diseases and Public Health Jockey Club College of Veterinary Medicine and Life SciencesCity University of Hong Kong

Previous studies have shown that maternal resveratrol improved growth performance and altered the microbial composition of suckling piglets under hot summer conditions. However, it remains unclear how maternal resveratrol improves growth performance of suckling piglets during high summer temperatures. A total of 20 sows(Landrace × Large White; three parity) were randomly assigned to 2 groups(with or without 300 mg/kg resveratrol) from d 75 of gestation to d 21 of lactation during high ambient temperatures(from 27 to 30℃). The results showed that maternal resveratrol supplementation increased total daily weight gain of piglets under hot summer conditions, which is consistent with previous studies. Furthermore, we found that maternal resveratrol improved the intestinal morphology and intestinal epithelial proliferation in suckling piglets. Dietary resveratrol supplementation affected the characteristics of exosome-derived microRNAs(miRNAs) in sow colostrum, as well as the genes targeted by differentially produced miRNAs. MiRNAs are concentrated in the tight junction pathway. As a result, the expression of intestinal tight junction proteins was increased in suckling piglets(P < 0.05).Notably, maternal resveratrol increased the intestinal secretory immunoglobulin A(sIgA) levels of suckling piglets via colostrum immunoglobin(P < 0.05), which could increase the abundance of beneficial microbiota to further increase the concentration of short chain fatty acids(SCFA) in suckling piglets' intestine(P < 0.05). Finally, our correlation analysis further demonstrated the positive associations between significantly differential intestinal microbiota, intestinal sIgA production and SCFA concentrations,as well as the positive relation between total daily weight gain and intestinal health of suckling *** together, our findings suggested that maternal resveratrol could promote intestinal health to improve piglet growth during high summer temperatures, which might be associa

关键词： Colostrum Exosome Immunoglobulin Intestinal health Resveratrol

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Effects of improved amino acid balance diet on lysine mammary utilization, whole body protein turnover and muscle protein breakdown on lactating sows

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Journal of animal Science and Biotechnology 2024年第5期15卷 2031-2043页

作者： Sai Zhang Juan C.Marini Vengai Mavangira Andrew Claude Julie Moore Mahmoud A.Mohammad Nathalie L.Trottier department of animal Science Michigan State UniversityEast Lansing 48824USA State Key Laboratory of Swine and Poultry breeding Industry Key Laboratory of Animal Nutrition and Feed Science in South ChinaMinistry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of Animal Breeding and NutritionInstitute of Animal ScienceGuangdong Academy of Agricultural SciencesGuangzhou 510640PR China USDA/ARS Children’s Nutrition Research Center and Pediatric Critical Care Medicine Department of PediatricsBaylor College of MedicineHoustonTX 77030USA department of Large animal Clinical Sciences Michigan State UniversityEast LansingMI 48824USA Present address:department of animal Science Cornell UniversityFrank Morrison Hall507 Tower RoadIthacaNY 14853‑4801USA

Background The study objective was to test the hypothesis that low crude protein(CP)diet with crystalline amino acids(CAA)supplementation improves Lys utilization efficiency for milk production and reduces protein turnover and muscle protein *** lactating multiparous Yorkshire sows were allotted to 1 of 2 isocaloric diets(10.80 MJ/kg net energy):control(CON;19.24%CP)and reduced CP with“optimal”AA profile(OPT;14.00%CP).Sow body weight and backfat were recorded on d 1 and 21 of lactation and piglets were weighed on d 1,14,18,and 21 of *** d 14 and 18,a subset of 9 sows(CON=4,OPT=5)was infused with a mixed solution of 3-[methyl-2H3]histidine(bolus injection)and[13C]bicarbonate(priming dose)first,then a constant 2-h[13C]bicarbonate infusion followed by a 6-h primed constant[1-13C]lysine *** blood and milk sampling were performed to determine plasma and milk Lys enrichment,Lys oxidation rate,whole body protein turnover,and muscle protein *** Over the 21-d lactation period,compared to CON,sows fed OPT had greater litter growth rate(P<0.05).Compared to CON,sows fed OPT had greater efficiency of Lys(P<0.05),Lys mammary flux(P<0.01)and whole-body protein turnover efficiency(P<0.05).Compared to CON,sows fed OPT tended to have lower whole body protein breakdown rate(P=0.069).Muscle protein breakdown rate did not differ between OPT and CON(P=0.197).Conclusion Feeding an improved AA balance diet increased efficiency of Lys and reduced whole-body protein turnover and protein *** results imply that the lower maternal N retention observed in lactating sows fed improved AA balance diets in previous studies may be a result of greater partitioning of AA towards milk rather than greater body protein breakdown.

关键词： Amino acid Efficiency Lactating sows Protein breakdown Protein turnover Reduced protein diet

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Integrated multi-omics reveals the relationship between growth performance,rumen microbes and metabolic status of Hu sheep with different residual feed intakes

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animal Nutrition 2024年第3期18卷 284-295页

作者： Yanzhen Zhang Xiaowei Zhang Dingren Cao Jinyong Yang Huiling Mao Lingling Sun Chong Wang College of animal Science and Technology College of Veterinary MedicineZhejiang A&F UniversityHangzhou 311300China Key Laboratory of Applied Technology on Green-Eco-Healthy animal Husbandry of Zhejiang Province Hangzhou 311300China Zhejiang Provincial animal Husbandry Technology Promotion and Monitoring Station of breeding Livestock and Poultry Hangzhou 310021China department of animal Science Shandong Vocational Animal Science and Veterinary CollegeWeifang 261061China

Residual feed intake(RFI)is a metric that provides a more accurate measure of feed *** lower the RFI,the higher the feed *** changes in the host microbiome and metabolome contribute to the greater feed efficiency of low RFI(LRFI)*** aim of this study was to explore the differences in rumen microorganisms,rumen metabolites and plasma metabolites of Hu sheep with differing RFI through the microbiome and metabolome.A total of 80 Hu sheep were *** experiment consisted of a 15-d pretrial period and a 128-d experimental *** RFI in the experimental period was calculated for all sheep,and the sheep were screened into high RFI(HRFI,n=8)and LRFI(n=8)*** HRFI and LRFI sheep did not differ in their initial and final body weights,average daily gain and body measurements,but the dry matter intake of LRFI sheep was significantly decreased(28.4%,P<0.001).The sheep with LRFI had higher digestibility of crude protein(P=0.010)and ether extract(P=0.010)compared to HRFI *** concentrations of acetate(P=0.036),propionate(P=0.010),valerate(P=0.027)and total volatile fatty acids(P=0.048)in rumen of LRFI group were higher compared to HRFI *** results of 16S rDNA sequencing indicated that the sheep with LRFI had higher proportions of Prevotella genus in rumen liquid(P=0.031).The rumen metabolome and plasma metabolome results showed that the citrate cycle,pyruvate metabolism and alanine,aspartate and glutamate metabolism processes were more active for sheep in LRFI group,which provided more energy substrate such as malic acid,oxoglutaric acid and citric *** conclusion,sheep with LRFI can utilize feed more efficiently,and the more active energy metabolism pathway and the production of energy substances may account for the higher feed efficiency.

关键词： Feed efficiency Residual feed intake Rumen microbiome and metabolome Plasma metabolome

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The WRKY46–MYC2 module plays a critical role in E-2-hexenal-induced anti-herbivore responses by promoting flavonoid accumulation

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Plant Communications 2024年第2期5卷 228-242页

作者： Xin Hao Shuyao Wang Yu Fu Yahui Liu Hongyu Shen Libo Jiang Eric SMcLamore Yingbai Shen National Engineering Research Center of Tree breeding and Ecological Restoration College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China State Key Laboratory of animal Biotech breeding College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China University of Illinois at Urbana-Champaign ChampaignIL 61820USA department of Agricultural Sciences Clemson UniversityClemsonSC 29634USA

Volatile organic compounds(VOCs)play key roles in plant–plant communication,especially in response to pest attack.E-2-hexenal is an important component of VOCs,but it is unclear whether it can induce endog-enous plant resistance to ***,we show that E-2-hexenal activates early signaling events in Ara-bidopsis(Arabidopsis thaliana)mesophyll cells,including an H2O2 burst at the plasma membrane,the directedflow of calcium ions,and an increase in cytosolic calcium *** of wild-type Arabidopsis plants with E-2-hexenal increases their resistance when challenged with the diamond-back moth Plutella xylostella L.,and this phenomenon is largely lost in the wrky46 ***,E-2-hexenal induces the expression of WRKY46 and MYC2,and the physical interaction of their encoded proteins was verified by yeast two-hybrid,firefly luciferase complementation imaging,and in vitro pull-down *** WRKY46–MYC2 complex directly binds to the promoter of RBOHD to promote its expres-sion,as demonstrated by luciferase reporter,yeast one-hybrid,chromatin immunoprecipitation,and electrophoretic mobility shift *** module also positively regulates the expression of E-2-hexenal-induced naringenin biosynthesis genes(TT4 and CHIL)and the accumulation of totalflavonoids,thereby modulating plant tolerance to ***,our results highlight an important role for the WRKY46–MYC2 module in the E-2-hexenal-induced defense response of Arabidopsis,providing new in-sights into the mechanisms by which VOCs trigger plant defense responses.

关键词： E-2-hexenal early signaling events WRKY46–MYC2 RBOHD naringenin

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Mucosal immune responses to Ichthyophthirius multifiliis in the ocular mucosa of rainbow trout(Oncorhynchus mykiss,Walbaum),an ancient teleost fish

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Marine Life Science & Technology 2024年第2期6卷 266-279页

作者： Weiguang Kong Guangyi Ding Gaofeng Cheng Peng Yang Zhen Xu Key Laboratory of breeding Biotechnology and Sustainable Aquaculture Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China department of Aquatic animal Medicine College of FisheriesHuazhong Agricultural UniversityWuhan 430070China

The eye,as a specialized visual organ,is directly exposed to the external environment,and,therefore,it faces constant chal-lenges from external pathogenic organisms and *** the ocular mucosa(OM)of mammals,mucosal-associated lymphoid tissues(MALTs)constitute the primary line of ***,the immune defense role of the OM remains unknown in aquatic *** gain insights into the immune processes within the OM of teleost fish,we developed an infection model of rainbow trout(Oncorhynchus mykiss)OM using a parasite,Ichthyophthirius multifiliis(Ich).Immunofluorescence,qPCR,and H&E staining revealed that Ich successfully infiltrates the OM of rainbow trout,leading to pathological struc-tural changes,as evidenced by A&B ***,the qPCR results indicate an up-regulation of immune-related genes following Ich infection in the ***,transcriptome analyses were conducted to detect immune responses and impairments in eye function within the OM of rainbow trout with Ich *** results of the transcriptome analysis that Ich infection can cause an extensive immune response in the OM,ultimately affecting ocular *** the best of our knowledge,our findings represent for the first time that the teleost OM could act as an invasion site for parasites and trigger a strong mucosal immune response to parasitic infection.

关键词： Ocular mucosa Mucosal immunity Transcriptome analysis Oncorhynchus mykiss Ichthyophthirius multifiliis

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AP-1 and SP1 trans-activate the expression of hepatic CYP1A1 and CYP2A6 in the bioactivation of AFB1 in chicken

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Science China(Life Sciences) 2024年第7期67卷 1468-1478页

作者： Jiang Deng Jia-Cheng Yang Yue Feng Ze-Jing Xu Kamil Kuča Meng Liu Lv-Hui Sun State Key Laboratory of Agricultural Microbiology Hubei Hongshan LaboratoryFrontiers Science Center for Animal Breeding and Sustainable ProductionCollege of Animal Sciences and TechnologyHuazhong Agricultural UniversityWuhan 430070China department of Chemistry Faculty of ScienceUniversity of Hradec KraloveHradec Kralove 50003Czech Republic

Dietary exposure to aflatoxin B1(AFB1)is harmful to the health and performance of domestic *** hepatic cytochrome P450s(CYPs),CYP1A1 and CYP2A6,are the primary enzymes responsible for the bioactivation of AFB1to the highly toxic exo-AFB1-8,9-epoxide(AFBO)in ***,the transcriptional regulation mechanism of these CYP genes in the liver of chicks in AFB1metabolism remains ***-luciferase reporter assay,bioinformatics and site-directed mutation results indicated that specificity protein 1(SP1)and activator protein-1(AP-1)motifs were located in the core region-1,063/-948,-606/-541 of the CYP1A1 promoter as well as-636/-595,-503/-462,-147/-1 of the CYP2A6 ***,overexpression and decoy oligodeoxynucleotide technologies demonstrated that SP1 and AP-1 were pivotal transcriptional activators regulating the promoter activity of CYP1A1 and ***,bioactivation of AFB1to AFBO could be increased by upregulation of CYP1A1 and CYP2A6 expression,which was trans-activated owing to the upregulation of AP-1,rather than SP1,stimulated by AFB1-induced reactive oxygen ***,nano-selenium could reduce ROS,downregulate AP-1 expression and then decrease the expression of CYP1A1 and CYP2A6,thus alleviating the toxicity of *** conclusion,AP-1 and SP1 played important roles in the transactivation of CYP1A1 and CYP2A6 expression and further bioactivated AFB1to AFBO in chicken liver,which could provide novel targets for the remediation of aflatoxicosis in chicks.

关键词： aflatoxin B1 CYP1A1 CYP2A6 SP1 AP-1 transcriptional activation

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DNA methylation in poultry:a review

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Journal of animal Science and Biotechnology 2024年第2期15卷 509-518页

作者： Xing Ju Zhijun Wang Danfeng Cai Semiu Folaniyi Bello Qinghua Nie State Key Laboratory for Conservation and Utilization of Subtropical Agro‑Bioresources Lingnan Guangdong Laboratory of AgricultureCollege of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdong 510642China Guangdong Provincial Key Lab of Agro‑animal Genomics and Molecular breeding and Key Lab of Chicken Genetics Breeding and ReproductionMinistry of AgricultureGuangzhouGuangdong 510642China College of animal Science and Technology Zhejiang Agriculture and Forestry University666 Wusu RoadLin’an 311300China

As an important epigenetic modification,DNA methylation is involved in many biological processes such as animal cell differentiation,embryonic development,genomic imprinting and sex chromosome *** DNA methylation sequencing becomes more sophisticated,it becomes possible to use it to solve more zoological *** paper reviews the characteristics of DNA methylation,with emphasis on the research and application of DNA methylation in poultry.

关键词： CpG islands Differentially methylated genes Differentially methylated regions DNA methylation Poultry

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Diet and monensin influence the temporal dynamics of the rumen microbiome in stocker and finishing cattle

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Journal of animal Science and Biotechnology 2024年第2期15卷 733-748页

作者： Jianmin Chai Caleb P.Weiss Paul A.Beck Wei Zhao Ying Li Jiangchao Zhao Guangdong Provincial Key Laboratory of animal Molecular Design and Precise breeding College of Life Science and EngineeringFoshan UniversityFoshanChina Division of Agriculture Department of Animal ScienceUniversity of ArkansasFayettevilleARUSA department of animal and Food Sciences Oklahoma State UniversityStillwaterOKUSA Institute of Feed Research of Chinese Academy of Agricultural Sciences Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural AffairsBeijing 100193China

Background Stocker cattle diet and management influence beef cattle performance during the finishing stage,but knowledge of the dynamics of the rumen microbiome associated with the host are lacking.A longitudinal study was conducted to determine how the feeding strategy from the stocker to the finishing stages of production affects the temporal dynamics of rumen *** the stocker phase,either dry hay or wheat pasture were provided,and three levels of monensin were *** calves were then transported to a feedlot and received similar finishing diets with or without *** microbial samples were collected on d 0,28,85 during the stocker stage(S0,S28 and S85)and d 0,14,28,56,30 d before slaughter and the end of the trial during the finishing stage(F0,F14,F28,F56,Pre-Ba,and Final).The V4 region of the bacterial 16S rRNA gene of 263 rumen samples was *** Higher alpha diversity,including the number of observed bacterial features and the Shannon index,was observed in the stocker phase compared to the finishing *** bacterial amplicon sequence variants(ASVs)differentiating different sampling time points were *** treatments during the stocker stage temporally impact the dynamics of rumen *** example,shared bacteria,including Bacteroidales(ASV19)and Streptococcus infantarius(ASV94),were significantly higher in hay rumen on S28,S85,and F0,while Bacteroidaceae(ASV11)and Limivicinus(ASV15)were more abundant in *** affected rumen microbial composition at a specific *** to feedlot significantly influenced microbiome structure and diversity in hay-fed *** taxa associated with body weight were classified,and core microbiotas interacted with each other during the *** In summary,the temporal dynamics of the rumen microbiome in cattle at the stocker and finishing stage are influenced by multiple factors of the feeding *** at the stocker phase may t

关键词： Beef cattle Diet Feedlot phase Monensin Next-generation sequencing Rumen microbiota Stocker

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Source and level of dietary iron influence semen quality by affecting inflammation, oxidative stress and iron utilization levels in boars

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Journal of animal Science and Biotechnology 2024年第5期15卷 2044-2058页

作者： Yinghui Wu Yamei Li Yueyue Miao Hongkui Wei Hefeng Luo Chunxiao Ren Yawei Zhang Juan Chen Tanghong Wei Jiyan Deng Jian Peng department of animal Nutrition and Feed Science College of Animal Science and TechnologyHuazhong Agricultural UniversityWuhan 430070China The Cooperative Innovation Center for Sustainable Pig Production Wuhan 400700China Frontiers Science Center for animal breeding and Sustainable Production Wuhan 430070China Dekon Food and Agriculture Group Chengdu 610000China Xingjia Bio-Engineering Co.Ltd Changsha 410011China

Background Boars fed a mixed form of inorganic and organic iron in excess of the NRC recommended levels still develop anemia,which suggested that the current level and form of iron supplementation in boar diets may be ***,56 healthy Topeka E line boars aged 15–21 months were randomly divided into 5 groups:basal diet supplemented with 96 mg/kg ferrous sulfate(FeSO_(4))and 54 mg/kg glycine chelated iron(Gly-Fe,control);80 mg/kg or 115 mg/kg Gly-Fe;80 mg/kg or 115 mg/kg methionine hydroxyl analogue chelated iron(MHA-Fe,from CalimetFe)for 16 *** effects of dietary iron supplementation with different sources and levels on semen quality in boars were *** 1)Serum Fe and hemoglobin concentrations were not affected by reduced dietary iron levels in the 80 mg/kg or 115 mg/kg Gly-Fe and MHA-Fe groups compared with the control group(P>0.05).2)Serum interleukin-6(IL-6)and sperm malondialdehyde(MDA)levels in the 80 mg/kg or 115 mg/kg MHA-Fe groups were lower than those in the control group(P<0.05),and higher serum superoxide dismutase levels and lower MDA levels in the 115 mg/kg MHA-Fe group(P<0.05).3)Boars in the 80 mg/kg or 115 mg/kg Gly-Fe and MHA-Fe groups had lower serum hepcidin(P<0.01),ferritin(P<0.05),and transferrin receptor(P<0.01)concentrations,and boars in the 115 mg/kg MHA-Fe group had higher seminal plasma Fe concentrations compared with the control group.4)Boars in the 80 mg/kg and 115 mg/kg MHA-Fe groups had lower abnormal sperm rate and in situ oscillating sperm ratio compared to the control group at weeks 12 and/or 16 of the ***,the effect of Gly-Fe on improving semen quality in boars was not evident.5)Serum IL-6 level was positively correlated with hepcidin concentration(P<0.05),which in turn was significantly positively correlated with abnormal sperm rate(P<0.05).Furthermore,significant correlations were also found between indicators of iron status and oxidative stress and semen quality ***

关键词： Adult boars Iron level Iron source Iron status Semen quality

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