Animal Biotechnology最新文献_第3页

Quercetin alleviates metabolic-associated fatty liver disease by tuning hepatic lipid metabolism, oxidative stress and inflammation. 槲皮素通过调节肝脏脂质代谢、氧化应激和炎症来缓解代谢相关的脂肪肝疾病。

IF 1.7 3区农林科学

Animal Biotechnology Pub Date : 2025-12-01 Epub Date: 2024-12-24 DOI: 10.1080/10495398.2024.2442351

Ling Jiang, Rong Yi, Huan Chen, Shuwu Wu

{"title":"Quercetin alleviates metabolic-associated fatty liver disease by tuning hepatic lipid metabolism, oxidative stress and inflammation.","authors":"Ling Jiang, Rong Yi, Huan Chen, Shuwu Wu","doi":"10.1080/10495398.2024.2442351","DOIUrl":"https://doi.org/10.1080/10495398.2024.2442351","url":null,"abstract":"The natural flavonoid quercetin, which exhibits a range of biological activities, has been implicated in liver disease resistance in recent research. In vivo study attesting to quercetin's protective effect against metabolic-associated fatty liver disease (MAFLD) is inadequate, however. Here, our investigation explored the potential benefits of quercetin in preventing MAFLD in C57BL/6 mice fed a high-fat diet (HFD). The results revealed that quercetin ameliorated the aberrant enhancement of body and liver weight. The hepatic histological anomalie induced by MAFLD were also mitigated by quercetin. HFD-induced imbalance in serum LDL, HDL, AST, ALT, TG, and LDH was mitigated by quercetin. Mechanically, we found that quercetin improved lipid metabolism by reducing lipogenesis proteins including ACC, FASN, and SREBP-1c and enhancing β-oxidation proteins including PPARα and CPT1A. In vitro study demonstrated that quercetin regulated hepatic lipid metabolism by targeting SREBP-1c and PPARα. Additionally, quercetin enhanced the antioxidant capacity in HFD-treated mice by downregulating Nrf2 and HO-1 expressions and upregulating SOD and GPX1 expressions. The hyper-activation of inflammation was also restored by quercetin via eliminating the phosphorylation of IκBα and NF-κB p65. Collectively, our observations highlight that quercetin exerts hepatoprotective properties in MAFLD mice by regulating hepatic lipid metabolism, oxidative stress and inflammatory response.","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":"36 1","pages":"2442351"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Perilipin1 mediates milk fat synthesis in bovine mammary epithelial cells through SREBP1 phosphorylation. Perilipin1通过SREBP1磷酸化介导牛乳腺上皮细胞的乳脂合成。

IF 1.7 3区农林科学

Animal Biotechnology Pub Date : 2025-12-01 Epub Date: 2025-05-08 DOI: 10.1080/10495398.2025.2497915

Benshun Yang, Meng Wang, Zhangqing Wu, Jianbing Tan, Yanhong Meng, Taoping Zhang, Linsen Zan, Wucai Yang

{"title":"Perilipin1 mediates milk fat synthesis in bovine mammary epithelial cells through SREBP1 phosphorylation.","authors":"Benshun Yang, Meng Wang, Zhangqing Wu, Jianbing Tan, Yanhong Meng, Taoping Zhang, Linsen Zan, Wucai Yang","doi":"10.1080/10495398.2025.2497915","DOIUrl":"https://doi.org/10.1080/10495398.2025.2497915","url":null,"abstract":"This study investigates the role of Perilipin1 (PLIN1) in milk fat synthesis in bovine mammary epithelial cells (BMECs) and its regulatory mechanisms, aiming to provide a foundation for improving milk fat content through molecular breeding. BMECs were used as a model to analyze the effects of PLIN1 overexpression (OE-PLIN1) and interference (si-PLIN1) on milk fat synthesis and lipid-related gene expression using RT-qPCR, Western blot, and Oil Red O staining. Results show that OE-PLIN1 significantly enhances triglyceride (TAG) accumulation in BMECs (P < 0.01), upregulates lipid synthesis-related genes (such as PPARγ, C/EBPα, C/EBPβ, FABP4, FASN) (P < 0.05), and downregulates the mRNA expression of lipid breakdown-related genes (HSL, ATGL) (P < 0.05). Conversely, si-PLIN1 significantly reduces TAG accumulation (P < 0.05) and lowers the expression of lipid synthesis and breakdown genes (P < 0.05). Additionally, OE-PLIN1 combined with SREBP1 siRNA interference (si-SREBP1) did not have a significant impact on the mRNA and protein levels of SREBP1, but it significantly altered SREBP1's phosphorylation, indicating that SREBP1 interference inhibits PLIN1's effect on milk fat synthesis. This study suggests that PLIN1 promotes milk fat synthesis in BMECs via regulating SREBP1 activity, offering a new strategy for enhancing milk fat content in dairy cattle.","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":"36 1","pages":"2497915"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143973922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Composition and diversity of rumen mycobiota in Jiani yaks (Bos grunniens jiani): insights into microbial ecology and functions. 贾尼牦牛瘤胃菌群的组成和多样性：微生物生态学和功能研究

IF 1.7 3区农林科学

Animal Biotechnology Pub Date : 2025-12-01 Epub Date: 2025-03-12 DOI: 10.1080/10495398.2025.2476539

Yangji Cidan, Jia Wang, Hongzhuang Wang, Chang Xu, Yanbin Zhu, Muhammad Kasib Khan, Wangdui Basang, Kun Li

{"title":"Composition and diversity of rumen mycobiota in Jiani yaks (Bos grunniens jiani): insights into microbial ecology and functions.","authors":"Yangji Cidan, Jia Wang, Hongzhuang Wang, Chang Xu, Yanbin Zhu, Muhammad Kasib Khan, Wangdui Basang, Kun Li","doi":"10.1080/10495398.2025.2476539","DOIUrl":"10.1080/10495398.2025.2476539","url":null,"abstract":"This study aimed to explore the diversity and functions of rumen mycobiota in 14‑ (PLf) and 15‑rib (DLf) Jiani yaks using ITS sequencing. A total of 1,079,105 and 1,086,799 filtered sequences were obtained for the PLf and DLf groups, respectively, with 491 ASVs common to both. No significant difference regarding the α‑diversity of mycobiota within the two groups was observed. While β‑diversity analysis indicated that the abundance of fifteen (15) genera in the PLf group and two (2) genera in the DLf group was found to be significantly different (p < 0.05). 16S rRNA sequencing results indicated that at the phylum level, in 14 ribs yaks Ascomycota, Basidiomycota, and Olpidiomycota, while in 15 rib yaks, Neocallimastigomycota, Mortierellomycota, and Rozellomycota were found to be significantly different (p < 0.05). At the genus level, Rhodotorula, Kluyveromyces, Comoclathris, Arthrinium, Cladophialophora, Seimatosporium, Lambertella, and Sphacelotheca in 14 rib yaks, and Orpinomyces, Ustilago, Fusarium, Aspergillus, Caecomyces, Alternaria, Trichoderma and Acremonium in 15 rib yaks were found to be significantly (p < 0.05) different. Predictive functional analysis based on ruminal fungal DNA sequences from 15‑rib yaks (DLf) demonstrated that genes involved in energy metabolism were upregulated. This study sheds novel insights into how genetic variations influence gut mycobiota in Jiani yak.","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":"36 1","pages":"2476539"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143603286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cefoxitin inhibits the formation of biofilm involved in antimicrobial resistance MDR Escherichia coli. 头孢西丁抑制生物膜的形成参与抗微生物药耐多药大肠杆菌。

IF 1.7 3区农林科学

Animal Biotechnology Pub Date : 2025-12-01 Epub Date: 2025-03-23 DOI: 10.1080/10495398.2025.2480176

Hailan Ma, Dacheng Liu, Chen Song, Hongliang Fan, Weiguang Zhou, Hongxia Zhao

{"title":"Cefoxitin inhibits the formation of biofilm involved in antimicrobial resistance MDR Escherichia coli.","authors":"Hailan Ma, Dacheng Liu, Chen Song, Hongliang Fan, Weiguang Zhou, Hongxia Zhao","doi":"10.1080/10495398.2025.2480176","DOIUrl":"10.1080/10495398.2025.2480176","url":null,"abstract":"The study investigates the relationship between biofilm formation and antibiotic resistance in Escherichia coli (E. coli) isolated from calves. Using biochemical and molecular methods, we identified the isolates and assessed their biofilm-forming ability through an improved crystal violet staining method. The minimum inhibitory concentrations (MICs) of 18 antibiotics against the isolates were determined using the broth microdilution method. The impact of cefoxitin on biofilm formation was analyzed using laser scanning confocal microscopy (LSCM). Additionally, qRT-PCR was employed to evaluate the expression levels of biofilm-related genes (luxS, motA, fliA, pfs, and csgD) in response to varying cefoxitin concentrations. Results indicated a significant correlation between antimicrobial resistance (AMR) and biofilm formation ability. Cefoxitin effectively reduced biofilm formation of multidrug-resistant E. coli isolates at 1/2 and 1 MIC, with enhanced inhibition at higher concentrations. The QS-related genes luxS, pfs, motA, and fliA were downregulated, leading to decreased csgD expression. At 1/2 MIC, csgD expression was significantly reduced. In conclusion, cefoxitin inhibits biofilm formation in multidrug-resistant E. coli by down-regulating key genes, offering a potential strategy to mitigate resistance and control infections in calves caused by biofilm-positive E. coli isolates.","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":"36 1","pages":"2480176"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exposure to Imidacloprid under variable conditions disturbs the muscle fatty acid profile of a fresh water non target fish: Labeo rohita. 在不同条件下接触吡虫啉会扰乱淡水非目标鱼类的肌肉脂肪酸谱：Labeo rohita。

IF 3.7 3区农林科学

Animal Biotechnology Pub Date : 2024-11-01 Epub Date: 2024-01-23 DOI: 10.1080/10495398.2024.2307020

Shazia Qadir, Muhammad Latif, Wen-Feng Wu, Fengqin Feng, Wadi B Alonazi, Arwah Amjad, Chien-Chin Chen, Zia Ur Rehman, Adil Khan, Furhan Iqbal

{"title":"Exposure to Imidacloprid under variable conditions disturbs the muscle fatty acid profile of a fresh water non target fish: Labeo rohita.","authors":"Shazia Qadir, Muhammad Latif, Wen-Feng Wu, Fengqin Feng, Wadi B Alonazi, Arwah Amjad, Chien-Chin Chen, Zia Ur Rehman, Adil Khan, Furhan Iqbal","doi":"10.1080/10495398.2024.2307020","DOIUrl":"10.1080/10495398.2024.2307020","url":null,"abstract":"Economy of Pakistan is heavily dependent upon agriculture and extensive use of pesticide is quiet common to enhance the crop yield. Imidacloprid is among the first choice pesticides in Pakistan and it has been reported that through run off along with water it ends up in water bodies affecting non target aquatic fauna. Through the present investigation, we are reporting the effects of Imidacloprid on the fatty acids composition of a non-target, commercially important carp: Labeo rohita. Fish were exposed to sub lethal concentration of Imidacloprid (120 mgL1) for 2, 4 and 8 days (short term) as well as for 16, 32 and 64 days (long term experimental conditions). Pesticide untreated controls were also maintained for each treatment. Following the specific Imidacloprid exposure, fatty acid composition (%) was determined in the muscle of all experimental groups by using gas chromatography. Fish exposed to Imidacloprid for 8 days had reduced Palmitic acid (p = 0.02) and elevated muscle Arachidic acid (p < 0.001) than control group. Labeo rohita exposed to the pesticide for 32 days had elevated muscle Oleic (p = 0.02) and Linoleic acid (p = 0.02) while fish exposed to Imidacloprid to 64 days had reduced muscle Palmitic (p = 0.04) and Oleic acid (p = 0.03). In conclusion, we are reporting that the exposure to sub lethal concentration of Imidacloprid disturb the muscle fatty acid composition of Labeo rohita that may affect its food quality. The effects were more pronounced under long term experimental conditions and were probably due to potentiating lipid peroxidation and disturbed fish metabolism upon Imidacloprid exposure.","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":" ","pages":"2307020"},"PeriodicalIF":3.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139519254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diversity assessment of a lesser known buffalo population from Central India and its comparative evaluation reveals presence of sufficient genetic variation and absence of selection. 对印度中部一个鲜为人知的水牛种群进行的多样性评估及其比较评价显示，该种群存在足够的遗传变异，而且没有经过选择。

IF 3.7 3区农林科学

Animal Biotechnology Pub Date : 2024-11-01 Epub Date: 2024-01-25 DOI: 10.1080/10495398.2024.2305550

Rajesh Kumar Gahlyan, Vikas Vohra, Supriya Chhotaray, R S Kataria

{"title":"Diversity assessment of a lesser known buffalo population from Central India and its comparative evaluation reveals presence of sufficient genetic variation and absence of selection.","authors":"Rajesh Kumar Gahlyan, Vikas Vohra, Supriya Chhotaray, R S Kataria","doi":"10.1080/10495398.2024.2305550","DOIUrl":"10.1080/10495398.2024.2305550","url":null,"abstract":"Planned breeding and conservation strategies for a lesser-known population require an assessment of complete genetic diversity and population structure analysis in addition to its morphometric characteristics. In the present study, a comparative analysis of the genetic structure of a rare buffalo population, namely Chhattisgarhi, was extensively studied using a panel of FAO-recommended microsatellite markers along with well-established breeds namely Murrah, Nili-Ravi, Gojri, Kalahandi, and Nagpuri. Mode shift analysis indicated the absence of genetic bottleneck in the recent past. Assessment of genetic diversity indices across all loci indicated the presence of sufficient genetic variation within and between populations. Analysis of molecular variance between the six different buffalo populations attributed 19.05% of the variations to between-population differentiation. Cluster analyses using DAPC and Bayesian approach along with the phylogenetic tree based on UPGMA grouped six populations into three groups. The Chhattisgarhi population was revealed to be genetically closer to Nagpuri and Kalahandi populations. The study reveals the presence of sufficient genetic diversity within the Chhattisgarhi population and indicates the absence of a systematic selection program. We suggest improvement and conservation programs should be planned for this breed in the near future through short-term selection.","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":" ","pages":"2305550"},"PeriodicalIF":3.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139545339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Postbiotic, anti-inflammatory, and immunomodulatory effects of aqueous microbial lysozyme in broiler chickens. 水溶液微生物溶菌酶对肉鸡的益生菌后作用、抗炎作用和免疫调节作用。

IF 3.7 3区农林科学

Animal Biotechnology Pub Date : 2024-11-01 Epub Date: 2024-02-07 DOI: 10.1080/10495398.2024.2309955

Mustafa Bastamy, Ismail Raheel, Ahmed Elbestawy, Mohamed Diab, Enas Hammad, Lamiaa Elebeedy, Amal M El-Barbary, Ghadeer M Albadrani, Mohamed M Abdel-Daim, Mervat A Abdel-Latif, Ahmed Orabi

{"title":"Postbiotic, anti-inflammatory, and immunomodulatory effects of aqueous microbial lysozyme in broiler chickens.","authors":"Mustafa Bastamy, Ismail Raheel, Ahmed Elbestawy, Mohamed Diab, Enas Hammad, Lamiaa Elebeedy, Amal M El-Barbary, Ghadeer M Albadrani, Mohamed M Abdel-Daim, Mervat A Abdel-Latif, Ahmed Orabi","doi":"10.1080/10495398.2024.2309955","DOIUrl":"10.1080/10495398.2024.2309955","url":null,"abstract":"Lysozymes, efficient alternative supplements to antibiotics, have several benefits in poultry production. In the present study, 120, one-day-old, Ross 308 broiler chickens of mixed sex, were allocated into 2 equal groups, lysozyme treated group (LTG) and lysozyme free group (LFG), to evaluate the efficacy of lysozyme (Lysonir®) usage via both drinking water (thrice) and spray (once). LTG had better (p = 0.042) FCR, and higher European production efficiency factor compared to LFG (p = 0.042). The intestinal integrity score of LTG was decreased (p = 0.242) compared to that of LFG; 0.2 vs. 0.7. Higher (p ≤ 0.001) intestinal Lactobacillus counts were detected in chickens of LTG. Decreased (p ≤ 0.001) IL-1β and CXCL8 values were reported in LTG. The cellular immune modulation showed higher (p ≤ 0.001) opsonic activity (MΦ and phagocytic index) in LTG vs. LFG at 25 and 35 days. Also, higher (p ≤ 0.001) local, IgA, and humoral, HI titers, for both Newcastle, and avian influenza H5 viruses were found in LTG compared to LFG. In conclusion, microbial lysozyme could improve feed efficiency, intestinal integrity, Lactobacillus counts, anti-inflammatory, and immune responses in broiler chickens.","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":" ","pages":"2309955"},"PeriodicalIF":3.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139696820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Whole genome resequencing revealed genomic variants and functional pathways related to adaptation in Indian yak populations. 全基因组重测序揭示了与印度牦牛种群适应相关的基因组变异和功能途径。

IF 3.7 3区农林科学

Animal Biotechnology Pub Date : 2024-11-01 Epub Date: 2023-11-25 DOI: 10.1080/10495398.2023.2282723

Amod Kumar, Mahesh Dige, Saket Kumar Niranjan, Sonika Ahlawat, Reena Arora, Aneet Kour, Ramesh Kumar Vijh

{"title":"Whole genome resequencing revealed genomic variants and functional pathways related to adaptation in Indian yak populations.","authors":"Amod Kumar, Mahesh Dige, Saket Kumar Niranjan, Sonika Ahlawat, Reena Arora, Aneet Kour, Ramesh Kumar Vijh","doi":"10.1080/10495398.2023.2282723","DOIUrl":"10.1080/10495398.2023.2282723","url":null,"abstract":"The present study aims to identify genomic variants through a whole genome sequencing (WGS) approach and uncover biological pathways associated with adaptation and fitness in Indian yak populations. A total of 30 samples (10 from each population) were included from Arunachali, Himachali and Ladakhi yak populations. WGS analysis revealed a total of 32171644, 27260825, and 32632460 SNPs and 4865254, 4429941, and 4847513 Indels in the Arunachali, Himachali, and Ladakhi yaks, respectively. Genes such as RYR2, SYNE2, BOLA, HF1, and the novel transcript ENSBGRG00000011079 were found to have the maximum number of high impact variants in all three yak populations, and might play a major role in local adaptation. Functional enrichment analysis of genes harboring high impact SNPs revealed overrepresented pathways related to response to stress, immune system regulation, and high-altitude adaptation. This study provides comprehensive information about genomic variants and their annotation in Indian yak populations, thus would serve as a data resource for researchers working on the yaks. Furthermore, it could be well exploited for better yak conservation strategies by estimating population genetics parameters viz., effective population size, inbreeding, and observed and expected heterozygosity.","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":" ","pages":"2282723"},"PeriodicalIF":3.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138433038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevalence and molecular characterization of multi-resistant Escherichia coli isolates from clinical bovine mastitis in China. 中国临床牛乳腺炎中分离出的多重耐药大肠埃希菌的流行情况和分子特征。

IF 3.7 3区农林科学

Animal Biotechnology Pub Date : 2024-11-01 Epub Date: 2024-03-13 DOI: 10.1080/10495398.2024.2322541

Hongxia Zhao, Hailan Ma, Chen Song, Shuting Fan, Hongliang Fan, Weiguang Zhou, Jinshan Cao

{"title":"Prevalence and molecular characterization of multi-resistant Escherichia coli isolates from clinical bovine mastitis in China.","authors":"Hongxia Zhao, Hailan Ma, Chen Song, Shuting Fan, Hongliang Fan, Weiguang Zhou, Jinshan Cao","doi":"10.1080/10495398.2024.2322541","DOIUrl":"10.1080/10495398.2024.2322541","url":null,"abstract":"Different antibiotics are used to treat mastitis in dairy cows that is caused by Escherichia coli (E. coli). Antimicrobial resistance in food-producing animals in China has been monitored since 2000. Surveillance data have shown that the prevalence of multiresistant E. coli in animals has increased significantly. This study aimed to investigate the occurrence and molecular characteristics of resistance determinants in E. coli strains (n = 105) obtained from lactating cows with clinical bovine mastitis (CBM) in China. A total of 220 cows with clinical mastitis, which has swollen mammary udder with reduced and red or gangrenous milk, were selected from 5000 cows. The results showed 94.3% of the isolates were recognized as multidrug resistant. The isolates (30.5%) were positive for the class I integrase gene along with seven gene cassettes that were accountable for resistance to trimethoprim resistance (dfrA17, dfr2d and dfrA1), aminoglycosides resistance (aadA1 and aadA5) and chloramphenicol resistance (catB3 and catB2), respectively. The blaTEM gene was present in all the isolates, and these carried the blaCTX gene. A double mutation in gyrA (i.e., Ser83Leu and Asp87Asn) was observed in all fluoroquinolone-resistant isolates. In total, nine fluoroquinolone-resistant E. coli isolates were identified with five different types of mutations in parC. In four (44.4%) isolates, Ser458Ala was present in parE, and in all nine (9/9) fluoroquinolone-resistant isolates, Pro385Ala was present in gyrB. Meanwhile, fluoroquinolone was observed as highly resistant, especially in isolates with gyrA and parC mutations. In summary, the findings of this research recognize the fluoroquinolone resistance mechanism and disclose integron prevalence and ESBLs in E. coli isolates from lactating cattle with CBM.","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":" ","pages":"2322541"},"PeriodicalIF":3.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140118581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of dietary supplementation of grape seed extract in comparison with excessive level of vitamin E on growth performance and antioxidant function of broilers. 日粮中补充葡萄籽提取物与过量维生素 E 相比对肉鸡生长性能和抗氧化功能的影响

IF 3.7 3区农林科学

Animal Biotechnology Pub Date : 2024-11-01 Epub Date: 2024-03-25 DOI: 10.1080/10495398.2024.2331640

Man Wang, Zongze He, Zhaolong Xiong, Hongwei Liu, Xiang Zhou, Jian He

引用次数: 0