农林科学最新文献

{"title":"Molecular epidemiology of bovine leukemia virus in cattle and phylogenetic analysis for determining its prevailing genotype in Khyber Pukhtunkhwa, Pakistan.","authors":"Farida Tahir, Umer Sadique, Farkhanda Tahir, Mikhlid H Almutairi, Abdulwahed Fahad Alrefaei, Shabana Naz, Rifat Ullah Khan, Naseer Khan Momand, Marco Ragni","doi":"10.1080/10495398.2025.2486029","DOIUrl":"https://doi.org/10.1080/10495398.2025.2486029","url":null,"abstract":"<p><p>This research focused on assessing the molecular prevalence of Bovine Leukemia Virus (BLV) in different cattle farms throughout Khyber Pakhtunkhwa and characterizing the dominant BLV genotypes by analyzing partial sequences of the gp51 gene. A total of 1,250 blood samples were collected from cattle of both sexes, various age groups (<1 year, 1-3 years, 3-5 years, and >5 years), and different breeds (Friesian, Jersey, Sahiwal, Achai, and crossbred) from multiple cattle farms. Of the 1,250 samples tested, BLV was detected in 136 (10.88%) using nested PCR. Risk factor analysis revealed a significantly higher prevalence of BLV in exotic breeds and older cattle. To confirm the findings and genotype the BLV isolates, four PCR-positive samples were sequenced. Phylogenetic analysis identified the isolates as belonging to genotype I, closely related to GI BLV isolates from Japan. Furthermore, the isolates in this study formed a tightly clustered group, suggesting a common origin from an earlier virus introduced into the host population in the study area.</p>","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":"36 1","pages":"2486029"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143956090","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}

{"title":"Phylogenetic network of infectious bronchitis virus: exploring the impact of migratory birds on viral clustering, evolution, and recombination.","authors":"Yu-Chen Tai, Geng-Ming Hu, Chi-Ming Chen","doi":"10.1080/01652176.2025.2465570","DOIUrl":"10.1080/01652176.2025.2465570","url":null,"abstract":"<p><p>Infectious bronchitis virus (IBV) presents a major threat to global poultry production, necessitating a thorough understanding of its evolutionary relationships for effective control measures. This study presents a novel distance-based Minimum Span Clustering (MSClustering) method to cluster 311 IBV strains, with a comparison of its results to the established IBV classification. Phylogenetic network and recombination analyses were employed to investigate IBV evolutionary relationships and transmission pathways. The phylogenetic network revealed distinct clusters reflecting relationships between IBV strains. Importantly, these network patterns, combined with recombination event analysis, suggest an unrecognized role for migratory birds in IBV dissemination, highlighting potential transmission pathways beyond established poultry trade routes. These findings contribute to advancing our understanding of IBV evolution and support the development of targeted strategies for controlling viral outbreaks in poultry populations. While statistical limitations may affect threshold estimation for smaller networks, our MSClustering method significantly accelerates processing speeds-approximately 100,000 times faster than PhyML when analyzing the dataset-enabling comprehensive-scale phylogenetic analysis of viruses.</p>","PeriodicalId":51207,"journal":{"name":"Veterinary Quarterly","volume":"45 1","pages":"1-14"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11834806/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143415504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quality and microbial community analysis of solid-state fermented feed with mixed bacteria from corn silage.","authors":"Lanlan Zhang, Shiyu Yang, Zhihong Yan, Tianling Fu, Can Xiulan, Ping Li, Ceng Gong, Lili Cao","doi":"10.1080/10495398.2025.2507905","DOIUrl":"https://doi.org/10.1080/10495398.2025.2507905","url":null,"abstract":"<p><p>The efficacy of microbial fermented feeds (FF) is highly dependent on microbial composition, underscoring the need for locally sourced, cost-effective formulations to advance sustainable livestock production. In this study, bacteria from corn silage (CSB) were screened for the preparation of solid-state fermented feed (SFF). In addition, for the purpose of comparison, purchased marketed fermentation bacteria (PMB) for SFF were also tested using the same methodology. Anaerobic fermentation was carried out by adding 5% CSB, PMB, and saline to conventional feeds at 37 °C, respectively. Then 10 g of fermentation samples was collected on days 0, 3, and 5, respectively. The composition and diversity of the microbial community were subsequently analyzed using high-throughput sequencing. The pH, titratable acidity (TA), and nutrient index of the feeds before and after fermentation were determined. High-throughput sequencing results showed that the dominant genera of CSB were <i>Weissella</i>, <i>Pseudomonas</i>, and <i>Bacteroidetes</i>, whereas the dominant genera of PMB were <i>Bacteroidetes</i>, <i>Bacillus</i>, <i>Pseudomonas</i>, and <i>Enterococcus</i>. The dominant genera in unfermented feeds (CK) were <i>Chlorophyta</i>, <i>Mitochondria</i>, and <i>Pseudomonas</i>. In addition, the dominant genera in SFF supplemented with CSB and PMB were <i>Weissella</i> and <i>Bacteroidetes</i>, respectively. Compared with CK, pH of SFF supplemented with CSB and PMB decreased gradually, and TA increased significantly and then decreased gradually during fermentation. Similarly, Crude fiber content was higher than CK in both CSB and PMB, while crude fat content was lower than CK for all of them. The study illustrates that CSB can be used to ferment porcine solid feeds and that CSB solid feed microorganisms may promote intestinal absorption of complex polysaccharides in pigs, which lays a certain theoretical foundation for the application of CSB to SFF.</p>","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":"36 1","pages":"2507905"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144179825","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}

{"title":"Retraction statement.","authors":"","doi":"10.1080/10495398.2025.2528007","DOIUrl":"https://doi.org/10.1080/10495398.2025.2528007","url":null,"abstract":"","PeriodicalId":7836,"journal":{"name":"Animal Biotechnology","volume":"36 1","pages":"2528007"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558868","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}

{"title":"Effect of paratuberculosis vaccination before and after oral experimental infection with <i>Mycobacterium avium</i> subspecies <i>paratuberculosis</i> in goats.","authors":"Marcos Royo, Natalia Elguezábal, Rakel Arrazuria, Julio Benavides, Miguel Fernández","doi":"10.1080/01652176.2025.2566363","DOIUrl":"10.1080/01652176.2025.2566363","url":null,"abstract":"<p><p>Vaccination against paratuberculosis, before or after infection with <i>Mycobacterium avium</i> subsp. <i>paratuberculosis</i> (Map), could affect the progression of paratuberculosis, the development of lesions, the peripheral and local immune response, or the colonization of Map in tissues and its elimination through feces. An experimental study was conducted with thirty-five 1.5-month-old kids, which were separated into 6 experimental groups that include different intervention combinations (vaccinated, non-vaccinated, challenged and non-challenged) at different points and slaughtered at 120 and 330 days post-infection. The use of an inactivated vaccine against paratuberculosis could avoid clinical disease manifestation but does not prevent the tissue colonization, even when applied before Map exposure, achieving a reduction in the presence of viable bacteria in tissues and limiting the progression toward diffuse lesions. The therapeutic effect in vaccinated animals could not be confirmed. In this sense, vaccination not only modulates the immune response in terms of the production of IFN-γ and antibodies in peripheral blood and reduces tissue damage but also contributes to limiting the spread of infection through reduced bacterial shedding especially in goats vaccinated before Map infection.</p>","PeriodicalId":51207,"journal":{"name":"Veterinary Quarterly","volume":"45 1","pages":"2566363"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12490372/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145202064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Validation of a new textile sensor band for on-farm heart rate variability assessment in calves.","authors":"Luca Turini, Gaia Pesenti Rossi, Giulia Sala, Giulia Foggi, Giulia Gislon, Sara Mondini, Sara Barbieri, Sara Calonaci, Elisabetta Canali, Francesca Bonelli, Marcello Mele","doi":"10.1080/01652176.2025.2569550","DOIUrl":"10.1080/01652176.2025.2569550","url":null,"abstract":"<p><p>Heart rate variability (HRV) has been studied as an indicator of stress and welfare in various species, including dairy calves, where significant changes in HRV were linked to cow-calf separation, isolation and disbudding. Wearable bands with smart textiles biotechnology offer a promising, low-stress alternative due to their comfort and ease of use without shaving or taping. The aim of this study was to examine if smart textiles biotechnology could be compared to a Standard base-apex ECG for measuring HRV in dairy calves. Twenty healthy Italian Holstein calves aged (20-60 days old) were recruited. Standard base-apex ECG and Smartex ECG were simultaneously acquired for 16 min in the standing, unsedated, unclipped calves. After extracting HRV parameters, comparisons were made using time, frequency, and nonlinear analyses. Agreement between devices was assessed using the Bland-Altman test and Spearman's 𝜚 correlations. Sperman's 𝜚 showed a very strong correlation for Mean RR, SDNN and LF (<i>p</i> value < .001), and a strong correlation for RMSSD, LF/HF and SampEn, indicating the most stable relationship between the two systems. Smart textiles biotechnology can be used for HRV measurement in calves, offering a valuable tool for animal welfare assessment.</p>","PeriodicalId":51207,"journal":{"name":"Veterinary Quarterly","volume":"45 1","pages":"2569550"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12498378/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Honey induces changes in the molecular structure and microstructure of gluten in wheat-rye sourdoughs.","authors":"Julia Nutter, Amelia Ivone Saiz","doi":"10.1177/10820132241252252","DOIUrl":"10.1177/10820132241252252","url":null,"abstract":"<p><p>Chemical oxidizers and redox enzymes have traditionally been used to enhance the quality of baked goods. However, consumers now seek natural and clean-label ingredients, avoiding those with chemical-sounding names. Honey, a natural source of glucose oxidase (GOX), represents a promising alternative to purified enzymes for baking purposes. This study aimed to evaluate the effect of honey on the molecular structure and microstructure of gluten proteins in sourdough fermented by different lactic acid bacteria (LAB) strains. Four wheat-rye (1:1) sourdoughs were prepared, each supplemented with honey and inoculated with a different LAB strain. Additionally, two uninoculated doughs, one with honey (honey dough) and the other without (control dough), were prepared under identical conditions. Electronic paramagnetic resonance spectroscopy revealed the presence of hydrogen peroxide in honey solutions, indicating its role as an active source of GOX. Raman spectroscopy showed that honey addition altered the molecular structure of gluten by increasing the proportion of random coils at the expense of α-helix structures. This change is likely attributed to the competition between honey sugars and gluten proteins for water molecules in this system. Moreover, honey led to a decrease in the free sulfhydryl content of gluten compared to the control dough, suggesting an increase in disulfide crosslinking points. These enhanced protein-protein interactions were observed in scanning electron microscopy micrographs as a coarse gluten network composed of interconnected strands and fibrils. All LAB strains exhibited optimal acidification (pH < 4.3) in honey-supplemented sourdoughs, promoting the hydrolysis of gluten proteins into smaller fragments. Overall, honey-supplemented sourdoughs showed a gradual increase in the β-sheet content while decreasing the proportion of random coils over time. This trend suggests that the polypeptide fragments interacted through interchain hydrogen bonds, leading to a more ordered structure, which likely contributes to providing dough with good baking aptitude.</p>","PeriodicalId":12331,"journal":{"name":"Food Science and Technology International","volume":" ","pages":"740-751"},"PeriodicalIF":1.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140911254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Management factors associated with the isolation of <i>Salmonella</i> spp. from table egg barns in Alberta.","authors":"Joan A St Amand, Thiago L Noetzold, Colleen B Annett Christianson","doi":"10.1080/03079457.2025.2519359","DOIUrl":"10.1080/03079457.2025.2519359","url":null,"abstract":"<p><strong>Research highlights: </strong>Management factors associated with the isolation of <i>Salmonella</i> spp.Increased <i>Salmonella</i> - ducks, sheep, barn size, bird numbers, age, shared equipment.Decreased <i>Salmonella</i> - competitive exclusion product, dedicated coat, parking signs.</p>","PeriodicalId":8788,"journal":{"name":"Avian Pathology","volume":" ","pages":"734-742"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144493963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The secretomes of bovine mammary epithelial cell subpopulations differentially modulate macrophage function.","authors":"Nikola Danev, Rebecca M Harman, Anja S Sipka, Leanne Oliveira, Lucas Huntimer, Gerlinde R Van de Walle","doi":"10.1080/01652176.2025.2463338","DOIUrl":"10.1080/01652176.2025.2463338","url":null,"abstract":"<p><p>Bovine mammosphere-derived epithelial cell (MDEC) cultures are heterogeneous and enriched for stem and progenitor cells. We previously reported that the bovine MDEC secretome, comprised of all bioactive factors secreted by the cells, displays regenerative properties, exerts antimicrobial effects, and modulates neutrophil activity, positioning it as a promising non-antibiotic biologic therapy for infectious diseases important to the dairy industry, like mastitis. Mastitis is defined as inflammation of the udder, and it is typically caused by bacterial infection. The effect of the MDEC secretome on macrophages, a first line of defense against bacterial infections in the udder, is unknown and could impact the utility of the secretome as a therapy for mastitis. To address this, we isolated bovine monocytes from peripheral blood and maintained them as an unpolarized (M0) population or polarized them into M1 or M2 phenotypes. Macrophages cultured with the secretome of bovine MDECs were assessed for their ability to phagocytose labeled bacterial particles and accumulate reactive oxygen species (ROS). We used single-cell RNA sequencing (scRNA-seq) and fluorescence-activated cell sorting (FACS) to isolate a subpopulation of MDECs that exert enhanced effects on macrophages. We found that the secretome of MDECs that do not express cluster of differentiation (CD) 73, a cell surface enzyme used as a marker for mesenchymal stromal cells, most strongly increased macrophage phagocytosis and ROS accumulation. These findings will help optimize the generation of the bovine MDEC secretome as a suitable treatment option for mastitis.</p>","PeriodicalId":51207,"journal":{"name":"Veterinary Quarterly","volume":"45 1","pages":"1-14"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11809179/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143374957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrative and conjugative elements associated with antimicrobial resistance in multidrug resistant <i>Pasteurella multocida</i> isolates from bovine respiratory disease (BRD)-affected animals in Spanish feedlots.","authors":"Carlos Serna, Johan Manuel Calderón Bernal, Laura Torre-Fuentes, Ángel García Muñoz, Alberto Díez Guerrier, Marta Hernández, José Francisco Fernández-Garayzábal, Ana Isabel Vela, Dolores Cid, Julio Alvarez","doi":"10.1080/01652176.2025.2474220","DOIUrl":"10.1080/01652176.2025.2474220","url":null,"abstract":"<p><p>The emergence of multidrug-resistance (MDR) in Pasteurella multocida, a major contributor to bovine respiratory disease (BRD) is being increasingly reported, often linked to the carriage of antimicrobial resistance genes (ARGs) on integrative and conjugative elements (ICEs). The resistance phenotype for 19 antimicrobials was determined using broth microdilution in 75 Pasteurella multocida isolates from healthy and BRD-affected cattle from five feedlots. The genomes of 32 isolates were sequenced to identify ARG) and mobile genetic elements (MGEs) and assess their genetic diversity. MDR isolates (with phenotypic resistance to aminoglycosides, macrolides, fluoroquinolones and/or tetracyclines) were primarily found among BRD-affected compared to healthy animals. Non-susceptible isolates, belonging to ST79 and ST13, harbored point mutations and four to nine ARGs, including rarely reported mechanisms in Europe (mph(E), msr(E) and aadA31 ARGs and newly described mutations in the gyrA/parC genes). All ARGs were linked to the presence of MGEs including two ICEs, Tn7407 and the novel Tn7809, a prophage and a putative composite transposon. Clonally related isolates were found in different batches from the same feedlot, suggesting maintenance of MDR strains. Our findings demonstrate the diverse genetic basis of AMR in P. multocida from BRD-affected cattle in Spain, emphasizing the role of MGEs in the ARG dissemination.</p>","PeriodicalId":51207,"journal":{"name":"Veterinary Quarterly","volume":"45 1","pages":"1-15"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11892046/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143587733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}