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Molybdenum and cadmium co-induce necroptosis through Th1/Th2 imbalance-mediated endoplasmic reticulum stress in duck ovaries

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Journal of Environmental Sciences 2024年第8期142卷 92-102页

作者： Ting Cui Xueyan Dai Huiling Guo Dianyun Wang Bingyan Huang Wenjing Pu Xuesheng Chu Caiying Zhang Jiangxi Provincial Key Laboratory for animal Health Institute of Animal Population HealthCollege of Animal Science and TechnologyJiangxi Agricultural UniversityNanchang 330045China

Cadmium(Cd)and excess molybdenum(Mo)pose serious threats to animal *** previous study has determined that Cd and/or Mo exposure can cause ovarian damage of ducks,while the specific mechanism is still *** further investigate the toxic mechanism of Cd and Mo co-exposure in the ovary,forty 8-day-old female ducks were randomly allocated into four groups for 16 weeks,and the doses of Cd and Mo in basic diet per kg were as follows:control group,Mo group(100 mg Mo),Cd group(4 mg Cd),and Mo+Cd group(100 mg Mo+4 mg Cd).Cadmium sulfate 8/3-hydrate(CdSO_(4)·8/3H_(2)O)and hexaammonium molybdate((NH_(4))_(6)Mo_(7)O_(24)·4H_(2)O)were the origins of Cd and Mo,*** the 16th week of the experiment,all ovary tissues were collected for the detection of related *** data indicated that Mo and/or Cd induced trace element disorders and Th1/Th2 balance to divert toward Th1 in the ovary,which activated endoplasmic reticulum(ER)stress and then provoked necroptosis through triggering RIPK1/RIPK3/MLKL signaling pathway,and eventually caused ovarian pathological injuries and necroptosis *** alterations of above indicators were most apparent in the joint *** all,this research illustrates that Mo and/or Cd exposure can initiate necroptosis through Th1/Th2 imbalance-modulated ER stress in duck ovaries,and Mo and Cd combined exposure aggravates ovarian *** research explores the molecular mechanism of necroptosis caused by Mo and/or Cd,which reveals that ER stress attenuation may be a therapeutic target to alleviate necroptosis.

关键词： Molybdenum Cadmium Th1/Th2 imbalance Endoplasmic reticulum stress Necroptosis Ovary

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Hexokinase 1 and 2 mediates glucose utilization to regulate the synthesis of kappa casein via ribosome protein subunit 6 kinase 1 in bovine mammary epithelial cells

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animal Nutrition 2024年第1期16卷 338-349页

作者： Tianyu Yang Jia Guo Han Song Osmond Datsomor Yuhang Chen Maocheng Jiang Kang Zhan Guoqi Zhao Institute of animal Culture Collection and Application College of Animal Science and Technology Yangzhou University

Glucose plays a vital part in milk protein synthesis through the mTOR signaling pathway in bovine mammary epithelial cells(BMEC). The objectives of this study were to determine how glucose affects hexokinase(HK) activity in BMEC and investigate the regulatory effect of HK in kappa casein(CSN3)synthesis via the mechanistic target of rapamycin complex 1(mTORC1) signaling pathway in BMEC. For this, HK1 and HK2 were knocked out in BMEC using the CRISPR/Cas9 system. The gene and protein expression, glucose uptake, and cell proliferation were measured. We found that glucose uptake, cell proliferation, CSN3 gene expression levels, and expression of HK1 and HK2 increased with increasing glucose concentrations. Notably, glucose uptake was significantly reduced in HK2 knockout(HK2KO)BMEC treated with 17.5 mM glucose. Moreover, under the same glucose treatment conditions, the proliferative ability and abundance of CSN3 were significantly diminished in both HK1 knockout(HK1KO)and HK2KO BMEC compared with that in wild-type BEMC. We further observed that the phosphorylation levels of ribosome protein subunit 6 kinase 1(S6K1) were reduced in HK1KO and HK2KO BMEC following treatment with 17.5 mM glucose. As expected, the levels of glucose-6-phosphate and the m RNA expression levels of glycolysis-related genes were decreased in both HK1KO and HK2KO BMEC following glucose treatment. These results indicated that the knockout of HK1 and HK2 inhibited cell proliferation and CSN3 expression in BMEC under glucose treatment, which may be associated with the inactivation of the S6K1 and inhibition of glycolysis.

关键词： Glucose Hexokinase Milk protein Mechanistic target of rapamycin complex 1 signaling pathway Bovine mammary epithelial cell Kappa casein

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Effect of red clover isoflavones on hormone, immune, inflammatory,and plasma biochemistry in lactating dairy cows

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animal Nutrition 2024年第1期16卷 306-312页

作者： Shiqi Zhang Xiaoyin Zhang Zhanbo Xiong Kexin Li Yuan Gao Ying Bu Nan Zheng Shengguo Zhao Jiaqi Wang State Key Laboratory of animal Nutrition Institute of Animal Sciences Chinese Academy of Agricultural Sciences

This study was to conducted to investigate the effect of red clover isoflavones on the health indicated by immune status and blood biochemistry in dairy cows. Sixty-eight healthy Holstein lactating cows were randomly divided into four treatments(n = 17 per treatment) from 5 blocks according to milk yield using a randomized complete block design. No initial differences in parity(2.13 ± 1.21), days in milk(165 ± 21 d), and milk yield(33.93 ± 3.81 kg/d) between groups. Cows were fed the basal diet supplemented with 0, 2, 4, or 8 g/kg red clover extract(RCE) in diet(dry matter based). Feeding, refusal feed weights, and milk yield were recorded three consecutive days in weeks 0, 4, 8, and 12. Blood was collected from the tail vein of the cows on the last day of weeks 4, 8 and 12, 1 h after the morning feeding,and analyzed for hormones, immunoglobulins, inflammatory markers, and markers of liver and kidney activities. The dry matter intake was significantly decreased by 3.7% in the 8 g/kg group(P 0.05). These results recommend the supplementation of RCE at a level from 2 to4 g/kg DM.

关键词： Dairy cow Red clover isoflavone Immunity Anti-inflammatory

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Fermented calcium butyrate supplementation in post-peak laying hens improved ovarian function and tibia quality through the“gut-bone” axis

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animal Nutrition 2024年第1期16卷 350-362页

作者： Huaiyong Zhang Yongshuai Wang Yilu Wang Bin Wei Leilei Wang Minh Tu Nguyen Xiangyun Lv Yanqun Huang Wen Chen College of animal Science and Technology Key Laboratory of Animal Biochemistry and NutritionMinistry of AgricultureHenan Agricultural University Laboratory for animal Nutrition and animal Product Quality Department of Animal Sciences and Aquatic EcologyGhent University Department of Agriculture and Forestry Hue University Charoen Pokphand Group Co. Ltd.

The compromised egg quality and leg abnormality during the end of the laying cycle(after 40 weeks)have been leading to poor animal welfare and substantial economic losses. Therefore, the effects of fermented calcium(Ca) butyrate, produced by fermentation by Clostridium butyricum, on production,eggshell quality, and tibial property of hens were explored. A total of 192 Hy-line brown laying hens at50-week-old were assigned to a basal diet or the basal diet with 300 mg/kg of the fermented Ca butyrate from 50 to 58 weeks of age. Each treatment had 6 replicates with 16 hens each. The diet supplemented with 300 mg/kg fermented Ca butyrate notably increased egg weight, ovarian follicle number, and eggshell strength(P = 0.072) as compared to the basal diet, which were associated with cytokine secretion, toll-like receptor signaling pathways, and intestinal immunity based on the RNA-seq data from the granulosa. Dietary Ca butyrate inclusion decreased the expression of ileal tumor necrosis factor-alpha and serum pro-inflammatory cytokine concentration, as well as increased the content of serum immunoglobulin A when compared to the basal diet(both P 0.05). In addition, the diet with fermented Ca butyrate reduced the number of osteoclasts in the proximal tibia and the level of C-terminal cross-linked telopeptide of type I collagen, a bone resorption marker(P < 0.05), whereas it tended to increase the concentration of the procollagen type I N-terminal propeptide that reflects bone formation marker in serum. Moreover, the layers fed fermented Ca butyrate diets possessed higher(P < 0.05) bone area and trabecular number of the proximal tibia, yield load, and ultimate load than those that consumed basal diets. Collectively, dietary fermented Ca butyrate supplementa

关键词： Fermented Ca butyrate Ovarian property Tibia metabolism Layer

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Proteo-transcriptomic profiles reveal key regulatory pathways and functions of LDHA in the ovulation of domestic chickens(Gallus gallus)

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Journal of animal Science and Biotechnology 2024年第4期15卷 1449-1465页

作者： Ruixue Nie Wenhui Zhang Haoyu Tian Junying Li Yao Ling Bo Zhang Hao Zhang Changxin Wu State Key Laboratory of animal Biotech Breeding Beijing Key Laboratory for Animal Genetic ImprovementCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Background In poultry, the smooth transition of follicles from the preovulatory-to-postovulatory phase impacts egg production in hens and can benefit the poultry industry. However, the regulatory mechanism underlying follicular ovulation in avians is a complex biological process that remains *** Critical biochemical events involved in ovulation in domestic chickens(Gallus gallus) were evaluated by transcriptomics, proteomics, and in vitro assays. Comparative transcriptome analyses of the largest preovulatory follicle(F1) and postovulatory follicle(POF1) in continuous laying(CL) and intermittent laying(IL) chickens indicated the greatest difference between CL_F1 and IL_F1, with 950 differentially expressed genes(DEGs), and the smallest difference between CL_POF1 and IL_POF1, with 14 DEGs. Additionally, data-independent acquisition proteomics revealed 252 differentially abundant proteins between CL_F1 and IL_F1. Perivitelline membrane synthesis, steroid biosynthesis, lysosomes, and oxidative phosphorylation were identified as pivotal pathways contributing to ovulation regulation. In particular, the regulation of zona pellucida sperm-binding protein 3, plasminogen activator, cathepsin A, and lactate dehydrogenase A(LDHA) was shown to be essential for ovulation. Furthermore, the inhibition of LDHA decreased cell viability and promoted apoptosis of ovarian follicles in *** This study reveals several important biochemical events involved in the process of ovulation, as well as crucial role of LDHA. These findings improve our understanding of ovulation and its regulatory mechanisms in avian species.

关键词： Chicken Data-independent acquisition proteomics LDHA Ovulation Regulatory mechanism Transcriptome

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Probiotic cocktails accelerate baicalin metabolism in the ileum to modulate intestinal health in broiler chickens

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Journal of animal Science and Biotechnology 2024年第2期15卷 779-794页

作者： Mingkun Gao Chaoyong Liao Jianyang Fu Zhonghua Ning Zengpeng Lv Yuming Guo State Key Laboratory of animal Nutrition and Feeding College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China National Engineering Laboratory for animal Breeding College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Background Baicalin and probiotic cocktails are promising feed additives with broad application *** probiotic cocktails are known to enhance intestinal health,the potential synergistic impact of combining baicalin with probiotic cocktails on the gut health of broiler chickens remains largely ***,this study aims to investigate the influence of the combined administration of baicalin and probiotic cocktails on the composition of ileal and cecal microbiota in broiler chickens to elucidate the underlying mechanisms responsible for the healthpromoting *** A total of 3201-day-old male Arbor Acres broilers were divided into 4 groups,each with 8 replicates of 10 chicks per *** a period of 42 d,the birds were fed a basal diet or the same diet supplemented with 37.5 g/t baicalin(BC),1,000 g/t probiotic cocktails(PC),or a combination of both BC(37.5 g/t)and PC(1,000 g/t).The results demonstrated that BC+PC exhibited positive synergistic effects,enhancing intestinal morphology,immune function,and barrier *** was evidenced by increased VH/CD ratio,sIgA levels,and upregulated expression of occludin and claudin-1(P<0.05).16S rRNA analysis indicated that PC potentiated the effects of BC,particularly in the ileum,where BC+PC significantly increased theα-diversity of the ileal microbiota,altered itsβ-diversity,and increased the relative abundance of Flavonifractor(P<0.05),a flavonoid-metabolizing ***,Flavonifractor positively correlated with chicken ileum crypt depth(P<0.05).While BC+PC had a limited effect on cecal microbiota structure,the PC group had a very similar microbial composition to BC+PC,suggesting that the effect of PC at the distal end of the gut overshadowed those of *** We demonstrated the synergistic enhancement of gut health regulation in broiler chickens by combining baicalin and probiotic *** cocktails enhanced the effects of baicalin and accelerated its metab

关键词： Baicalin Gut health Ileal microbiota Probiotic cocktails Synergistic effects

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Staphylococcus aureus and biofilms:transmission, threats, and promising strategies in animal husbandry

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Journal of animal Science and Biotechnology 2024年第4期15卷 1408-1423页

作者： Mengda Song Qi Tang Yakun Ding Peng Tan Yucheng Zhang Tao Wang Chenlong Zhou Shenrui Xu Mengwei Lyu Yueyu Bai Xi Ma State Key Laboratory of animal Nutrition and Feeding College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Key Laboratory of Innovative Utilization of Local Cattle and Sheep Germplasm Resources(Co‑Construction by Ministry and Province) Ministry of Agriculture and Rural AffairsSchool of Agricultural SciencesZhengzhou UniversityZhengzhou 450001China

Staphylococcus aureus(S. aureus) is a common pathogenic bacterium in animal husbandry that can cause diseases such as mastitis, skin infections, arthritis, and other ailments. The formation of biofilms threatens and exacerbates S. aureus infection by allowing the bacteria to adhere to pathological areas and livestock product surfaces, thus triggering animal health crises and safety issues with livestock products. To solve this problem, in this review, we provide a brief overview of the harm caused by S. aureus and its biofilms on livestock and animal byproducts(meat and dairy products). We also describe the ways in which S. aureus spreads in animals and the threats it poses to the livestock industry. The processes and molecular mechanisms involved in biofilm formation are then explained. Finally, we discuss strategies for the removal and eradication of S. aureus and biofilms in animal husbandry, including the use of antimicrobial peptides, plant extracts, nanoparticles, phages, and antibodies. These strategies to reduce the spread of S. aureus in animal husbandry help maintain livestock health and improve productivity to ensure the ecologically sustainable development of animal husbandry and the safety of livestock products.

关键词： animal husbandry Biofilm Mastitis Mitigation strategies Staphylococcus aureus

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Coated sodium butyrate ameliorates high‑energy and low‑protein diet induced hepatic dysfunction via modulating mitochondrial dynamics, autophagy and apoptosis in laying hens

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Journal of animal Science and Biotechnology 2024年第3期15卷 1190-1206页

作者： Sasa Miao Tianming Mu Ru Li Yan Li Wenyan Zhao Jiankui Li Xinyang Dong Xiaoting Zou Key Laboratory of animal Feed and Nutrition of Zhejiang Province Key Laboratory of Animal Nutrition and Feed Science(Eastern of China)Ministry of Agriculture and Rural AffairsThe Key Laboratory of Molecular Animal NutritionMinistry of EducationCollege of Animal SciencesZhejiang UniversityHangzhou 310058China.

Background Fatty liver hemorrhagic syndrome(FLHS),a fatty liver disease in laying hens,poses a grave threat to the layer industry,stemming from its ability to trigger an alarming plummet in egg production and usher in acute mortality among laying *** evidence suggests that the onset and progression of fatty liver was closely related to mitochondria *** butyrate was demonstrated to modulate hepatic lipid metabolism,alle-viate oxidative stress and improve mitochondrial dysfunction in vitro and mice ***,there is limited existing research on coated sodium butyrate(CSB)to prevent FLHS in laying hens,and whether and how CSB exerts the anti-FLHS effect still needs to be *** this experiment,the FLHS model was induced by administering a high-energy low-protein(HELP)diet in laying *** objective was to investigate the effects of CSB on alleviating FLHS with a focus on the role of CSB in modulating mitochondrial *** A total of 288 healthy 28-week-old Huafeng laying hens were arbitrarily allocated into 4 groups with 6 replicates each,namely,the CON group(normal diet),HELP group(HELP diet),CH500 group(500 mg/kg CSB added to HELP diet)and CH750 group(750 mg/kg CSB added to HELP diet).The duration of the trial encompassed a period of 10 *** The result revealed that CSB ameliorated the HELP-induced FLHS by improving hepatic steatosis and patho-logical damage,reducing the gene levels of fatty acid synthesis,and promoting the mRNA levels of key enzymes of fatty acid *** reduced oxidative stress induced by the HELP diet,upregulated the activity of GSH-Px and SOD,and decreased the content of MDA and *** also mitigated the HELP diet-induced inflammatory response by blocking TNF-α,IL-1β,and F4/*** addition,dietary CSB supplementation attenuated HELP-induced activation of the mitochondrial unfolded protein response(UPRmt),mitochondrial damage,and decline of ATPase *** diet decreased th

关键词： Autophagy Coated sodium butyrate Laying hens Lipid metabolism Mitochondria

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Associations of genome-wide structural variations with phenotypic differences in cross-bred Eurasian pigs

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Journal of animal Science and Biotechnology 2024年第1期15卷 68-87页

作者： Wencheng Zong Jinbu Wang Runze Zhao Naiqi Niu Yanfang Su Ziping Hu Xin Liu Xinhua Hou Ligang Wang Lixian Wang Longchao Zhang State Key Laboratory of animal Biotech Breeding Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China College of animal Science Shanxi Agricultural UniversityJinzhong 030801China College of animal Science and Technology Qingdao Agricultural UniversityQingdao 266109China

Background During approximately 10,000 years of domestication and selection,a large number of structural variations(SVs)have emerged in the genome of pig breeds,profoundly influencing their phenotypes and the ability to adapt to the local ***(≥50 bp)are widely distributed in the genome,mainly in the form of insertion(INS),mobile element insertion(MEI),deletion(DEL),duplication(DUP),inversion(INV),and translocation(TRA).While studies have investigated the SVs in pig genomes,genome-wide association studies(GWAS)-based on SVs have been rarely *** Here,we obtained a high-quality SV map containing 123,151 SVs from 15 Large White and 15 Min pigs through integrating the power of several SV tools,with 53.95%of the SVs being reported for the first *** high-quality SVs were used to recover the population genetic structure,confirming the accuracy of *** functional SV loci were then identified based on positional effects and breed ***,GWAS were performed for 36 traits by genotyping the screened potential causal loci in the F2 population according to their corresponding genomic *** identified a large number of loci involved in 8 carcass traits and 6 skeletal traits on chromosome 7,with FKBP5 containing the most significant SV locus for almost all *** addition,we found several significant loci in intramuscular fat,abdominal circumference,heart weight,and liver weight,*** We constructed a high-quality SV map using high-coverage sequencing data and then analyzed them by performing GWAS for 25 carcass traits,7 skeletal traits,and 4 meat quality traits to determine that SVs may affect body size between European and Chinese pig breeds.

关键词： Body size GWAS Pig Skeleton Structural variations

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Ginkgo biloba extract alleviates fatty liver hemorrhagic syndrome in laying hens via reshaping gut microbiota

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Journal of animal Science and Biotechnology 2024年第1期15卷 277-294页

作者： Xinyue Yang Depeng Li Meihong Zhang Yuqing Feng Xiaolu Jin Dan Liu Yuming Guo Yongfei Hu State Key Laboratory of animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Background Ginkgo biloba extract(GBE)is evidenced to be effective in the prevention and alleviation of metabolic disorders,including obesity,diabetes and fatty liver ***,the role of GBE in alleviating fatty liver hemorrhagic syndrome(FLHS)in laying hens and the underlying mechanisms remain to be ***,we investigated the effects of GBE on relieving FLHS with an emphasis on the modulatory role of GBE in chicken gut *** The results showed that GBE treatment ameliorated biochemical blood indicators in high-fat diet(HFD)-induced FLHS laying hen model by decreasing the levels of TG,TC,ALT and *** lipid accumulation and pathological score of liver were also relieved after GBE ***,GBE treatment enhanced the antioxidant activity of liver and serum by increasing GSH,SOD,T-AOC,GSH-PX and reducing MDA,and downregulated the expression of genes related to lipid synthesis(FAS,LXRα,GPAT1,PPARγand Ch REBP1)and inflammatory cytokines(TNF-α,IL-6,TLR4 and NF-κB)in the *** profiling analysis revealed that GBE treatment reshaped the HFD-perturbed gut microbiota,particularly elevated the abundance of Megasphaera in the ***,targeted metabolomic analysis of SCFAs revealed that GBE treatment significantly promoted the production of total SCFAs,acetate and propionate,which were positively correlated with the GBE-enriched gut ***,we confirmed that the GBE-altered gut microbiota was sufficient to alleviate FLHS by fecal microbiota transplantation(FMT).Conclusions We provided evidence that GBE alleviated FLHS in HFD-induced laying hens through reshaping the composition of gut *** findings shed light on mechanism underlying the anti-FLHS efficacy of GBE and lay foundations for future use of GBE as additive to prevent and control FLHS in laying hen industry.

关键词： Antioxidation Fecal microbiota transplantation FLHS Ginkgo biloba extract Inflammation Megasphaera

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