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Gong J, Li T, Li Y, Xiong X, Xu J, Chai X, Ma Y. UID-Dual Transcriptome Sequencing Analysis of the Molecular Interactions between Streptococcus agalactiae ATCC 27956 and Mammary Epithelial Cells. Animals (Basel) 2024; 14:2587. [PMID: 39272372 PMCID: PMC11393856 DOI: 10.3390/ani14172587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2024] [Revised: 08/30/2024] [Accepted: 09/04/2024] [Indexed: 09/15/2024] Open
Abstract
Streptococcus agalactiae ATCC 27956 is a highly contagious Gram-positive bacterium that causes mastitis, has a high infectivity for mammary epithelial cells, and becomes challenging to treat. However, the molecular interactions between it and mammary epithelial cells remain poorly understood. This study analyzed differential gene expression in mammary epithelial cells with varying levels of S. agalactiae infection using UID-Dual transcriptome sequencing and bioinformatics tools. This study identified 211 differentially expressed mRNAs (DEmRNAs) and 452 differentially expressed lncRNAs (DElncRNAs) in host cells, primarily enriched in anti-inflammatory responses, immune responses, and cancer-related processes. Additionally, 854 pathogen differentially expressed mRNAs (pDEmRNAs) were identified, mainly enriched in protein metabolism, gene expression, and biosynthesis processes. Mammary epithelial cells activate pathways, such as the ERK1/2 pathway, to produce reactive oxygen species (ROS) to eliminate bacteria. The bacteria disrupt the host's innate immune mechanisms by interfering with the alternative splicing processes of mammary epithelial cells. Specifically, the bacterial genes of tsf, prfB, and infC can interfere with lncRNAs targeting RUNX1 and BCL2L11 in mammary epithelial cells, affecting the alternative splicing of target genes and altering normal molecular regulation.
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Affiliation(s)
- Jishang Gong
- College of Science and Technology, Gansu Agriculture University, Lanzhou 730070, China
- Institute of Biological Technology, Nanchang Normal University, Nanchang 330030, China
| | - Taotao Li
- College of Science and Technology, Gansu Agriculture University, Lanzhou 730070, China
| | - Yuanfei Li
- Institute of Biological Technology, Nanchang Normal University, Nanchang 330030, China
| | - Xinwei Xiong
- Institute of Biological Technology, Nanchang Normal University, Nanchang 330030, China
| | - Jiguo Xu
- Institute of Biological Technology, Nanchang Normal University, Nanchang 330030, China
| | - Xuewen Chai
- Institute of Biological Technology, Nanchang Normal University, Nanchang 330030, China
| | - Youji Ma
- College of Science and Technology, Gansu Agriculture University, Lanzhou 730070, China
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Stanišić L, Stanimirović Z, Kovačević B, Blagojević J, Nedić S, Mašić A, Maletić M. The efficacy of intravenous application of the Mycobacterium Cell Wall Fraction (AMPLIMUNE) in the treatment of subclinical mastitis caused by S. Aureus. Vet Res Commun 2024; 48:2429-2440. [PMID: 38809504 DOI: 10.1007/s11259-024-10426-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/24/2024] [Indexed: 05/30/2024]
Abstract
The aim of the study was to investigate the effect of the immunostimulant Mycobacterium Cell Wall Fraction (MCWF) on the treatment of S. aureus SCM by intravenous application. The study included 45 HF dairy cows in 2nd and 3rd month after parturition divided into three groups (n = 15 per group): the MC + group - cows with S. aureus SCM treated with MCWF; the MC- group - cows with S. aureus SCM, with no treatment; and the C group - the control group of healthy cow with no treatment. Samples were collected 0th (I sample), 7th (II), and 14th day (III) from the day of SCM diagnosis and on day 21st (IV). A greater influx of leukocytes was confirmed into milk after 7 days after MCWF treatment in MC + group, which was followed by increase of WBC and LYM in blood. These results support the hypothesis of effective action of MCWF, and in quarters with lower-grade infection, bacteriological cure was achieved. The MC- group had a statistically higher concentration of TBARS and CAT activity in milk, while MC + group had lower blood serum LDH activity, which indicates a positive effect of the MCWF application and a lower exposure of the tissue to lipide peroxidation and inflammation caused by S. aureus. The application of MCWF would give new possibilities in the prevention and therapy of mammary gland diseases without fear of the presence of residues and the emergence of bacterial resistance. In future studies, the effects of local and systemic application of MCWF in the treatment of S. aureus SCM should be compared.
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Affiliation(s)
- Ljubodrag Stanišić
- Department of Reproduction, Fertility and Artificial Insemination, Faculty of Veterinary Medicine, University of Belgrade, Bulevar oslobodjenja 18, Belgrade, 11000, Serbia.
| | - Zoran Stanimirović
- Department of Biology, Faculty of Veterinary Medicine, University of Belgrade, Bulevar oslobodjenja 18, Belgrade, Serbia
| | - Branislav Kovačević
- Institute of Lowland Forestry and Environment, University of Novi Sad, Antona Čehova 13d, Novi Sad, Serbia
| | - Jovan Blagojević
- Department of Biology, Faculty of Veterinary Medicine, University of Belgrade, Bulevar oslobodjenja 18, Belgrade, Serbia
| | - Svetlana Nedić
- Department of Reproduction, Fertility and Artificial Insemination, Faculty of Veterinary Medicine, University of Belgrade, Bulevar oslobodjenja 18, Belgrade, 11000, Serbia
| | | | - Milan Maletić
- Department of Reproduction, Fertility and Artificial Insemination, Faculty of Veterinary Medicine, University of Belgrade, Bulevar oslobodjenja 18, Belgrade, 11000, Serbia
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Yang K, Li Y, Liu W, Zhang J, Guo W, Zhu X. Dielectric relaxation parameters combing raw milk compositions to improve the prediction performance of milk somatic cell count. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024. [PMID: 39030961 DOI: 10.1002/jsfa.13750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/15/2024] [Accepted: 06/25/2024] [Indexed: 07/22/2024]
Abstract
BACKGROUND Milk somatic cell count (SCC) is an international standard for identifying mastitis in dairy cows and measuring raw milk quality. Milk SCC can be predicted based on dielectric relaxation parameters (DRPs). We noted a high correlation between DRPs and the milk composition content (MCC), and so we hypothesized that combining DRPs with MCC could improve the prediction accuracy of milk SCC. The present study aimed to analyze the relationship between milk SCC, DRPs and MCC, as well as to investigate the potential of combining DRPs with MCC to improve the prediction accuracy of milk SCC. RESULTS The dielectric spectra (20-4500 MHz) of 276 milk samples were measured, and their DRPs (εl, εh, Δε, τ and σ) were solved by the modified Debye equation. The SCC prediction models were developed using dielectric full spectra, DRPs and DRPs combined with MCC. The results showed the correlations between DRPs (εl, εh, Δε and σ) and MCC (fat, protein, lactose and total solids) were high, and SCC exhibited a non-linear relationship with DRPs and MCC. The 5DRPs + MCC-generalized regression neural network model had the best prediction, with a standard error of prediction for prediction of 0.143 log SCC mL-1 and residual of the prediction bias of 2.870, which was superior to the models based on full spectra, DRPs and near-infrared or visible/near-infrared. CONCLUSION The present study has improved the prediction accuracy of milk SCC based on the DRPs combing MCC and provides a new method for dairy farming and milk quality assessment. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Ke Yang
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, China
| | - Yue Li
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, China
| | - Wei Liu
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, China
| | - Jiahui Zhang
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, China
| | - Wenchuan Guo
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, China
- Key Laboratory of Agricultural Internet of Things, Ministry of Agriculture and Rural Affairs, Yangling, China
| | - Xinhua Zhu
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, China
- Shaanxi Research Center of Agricultural Equipment Engineering Technology, Yangling, China
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Zhou C, Liu L, Chen J, Fu Q, Chen Z, Wang J, Sun X, Ai L, Xu X, Wang J. Rapid authentication of characteristic milk powders by recombinase polymerase amplification assays. Food Chem 2024; 443:138540. [PMID: 38277935 DOI: 10.1016/j.foodchem.2024.138540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/30/2023] [Accepted: 01/21/2024] [Indexed: 01/28/2024]
Abstract
The authentication of dairy species has great significance for food safety. This study focused on a more rapid method for identifying major dairy species, and specific recombinase polymerase amplification (RPA)-based assays for cattle, goat, sheep, camel and donkey were developed. Through the developed RPA-based assays, goats and sheep could be simultaneously identified and bovine families could be differentiated. The performances of the RPA assays were validated using 37 milk powder samples, of which 16.2% (6/37) were suspected of being adulterated and 24.3% (9/37) were potentially at risk of being wrongly identified as adulteration. The effectiveness of the developed assays for crude DNA detection was also validated by a rapid nucleic acid extraction kit, and results showed that the presence of large amounts of protein and fat did not affect the qualitative results. Therefore, these assays could combine with the rapid nucleic acids extraction methods for being used in field detection.
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Affiliation(s)
- Cang Zhou
- School of Public Health, Hebei Medical University, Shijiazhuang 050017, China; Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang 050051, China; Hebei Key Laboratory of Environment and Human Health, Shijiazhuang 050017, China
| | - Libing Liu
- Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang 050051, China
| | - Jia Chen
- College of Chemical Technology, Shijiazhuang University, Shijiazhuang 050035, China
| | - Qi Fu
- Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang 050051, China
| | - Zhimin Chen
- Shijiazhuang Food and Drug Inspection Center, Shijiazhuang 050020, China
| | - Jinfeng Wang
- Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang 050051, China
| | - Xiaoxia Sun
- Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang 050051, China
| | - Lianfeng Ai
- Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang 050051, China
| | - Xiangdong Xu
- School of Public Health, Hebei Medical University, Shijiazhuang 050017, China; Hebei Key Laboratory of Environment and Human Health, Shijiazhuang 050017, China.
| | - Jianchang Wang
- School of Public Health, Hebei Medical University, Shijiazhuang 050017, China; Food Microbiology and Animal Quarantine Laboratory, Technology Center of Shijiazhuang Customs, Shijiazhuang 050051, China; Hebei Key Laboratory of Environment and Human Health, Shijiazhuang 050017, China.
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Chu S, Zhao T, Li M, Sun Y, Yang Y, Yang Z. Long non-coding RNA (CMR) involved in autoprotection in S. aureus mastitis in dairy cows by regulating miR-877/FOXM1. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 278:116456. [PMID: 38744067 DOI: 10.1016/j.ecoenv.2024.116456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 04/30/2024] [Accepted: 05/09/2024] [Indexed: 05/16/2024]
Abstract
Long non-coding RNAs (LncRNAs) are dysregulated in a variety of human diseases and are highly involved in the development and progression of tumors. Studies on lncRNAs associated with cow mastitis have been lagging behind compared to humans or model animals, therefore, the aim of this study was to explore the mechanism of LncRNAs (CMR) involved in autoprotection against S. aureus mastitis in Bovine Mammary Epithelial Cells (BMECs). First, qRT-PCR was used to examine the relative expression of CMR in a S. aureus mastitis model of BMECs. Then, cell proliferation and apoptosis were detected by EdU and apoptosis assay. Finally, the targeting relationship between miRNAs and mRNA/LncRNAs was determined by dual luciferase reporter gene, qRT-PCR and western blotting techniques. The results showed that CMR was upregulated in the S. aureus mastitis model of BMECs and promoted the expression of inflammatory factors, and SiRNA-mediated CMR inhibited the proliferation of mammary epithelial cells and induced apoptosis. Mechanistically, CMR acts as a competitive endogenous RNA (ceRNA) sponge miR-877, leading to upregulation of FOXM1, a target of miR-877. Importantly, either miR-877 overexpression or FOXM1 inhibition abrogated CMR knockdown-induced apoptosis promoting cell proliferation and reducing inflammatory factor expression levels. In summary, CMR is involved in the regulation of autoprotection against S. aureus mastitis through the miR-877/FOXM1 axis in BMECs and induces immune responses in mammary tissues and cells of dairy cows, providing an important reference for subsequent prevention and control of cow mastitis and the development of targeted drugs.
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Affiliation(s)
- Shuangfeng Chu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Tianqi Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Mingxun Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Yujia Sun
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Yi Yang
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou 225009, China; Yangzhou University, College of Veterinary Medicine, Yangzhou 225009, China
| | - Zhangping Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou 225009, China.
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Orzuna-Orzuna JF, Godina-Rodríguez JE, Garay-Martínez JR, Lara-Bueno A. Capsaicin as a Dietary Additive for Dairy Cows: A Meta-Analysis on Performance, Milk Composition, Digestibility, Rumen Fermentation, and Serum Metabolites. Animals (Basel) 2024; 14:1075. [PMID: 38612314 PMCID: PMC11010920 DOI: 10.3390/ani14071075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 03/28/2024] [Accepted: 03/28/2024] [Indexed: 04/14/2024] Open
Abstract
This study aimed to evaluate the effects of dietary supplementation with capsaicin (CAP) on productive performance, milk composition, nutrient digestibility, ruminal fermentation, and serum metabolites of dairy cows using a meta-analytical approach. The database included 13 studies, from which the response variables of interest were obtained. Data were analyzed using a random effects model, and results were expressed as weighted mean differences between treatments supplemented with and without CAP. Dietary supplementation with CAP increased (p < 0.05) dry matter intake, milk yield, feed efficiency, milk fat yield, and milk fat content. However, CAP supplementation did not affect (p > 0.05) milk protein and lactose yield, milk urea nitrogen, or milk somatic cell count. Greater (p < 0.05) apparent digestibility of dry matter and crude protein was observed in response to the dietary inclusion of CAP. Likewise, supplementation with CAP increased (p < 0.05) the rumen concentration of total volatile fatty acids. In contrast, CAP supplementation did not affect (p > 0.05) ruminal pH or the ruminal concentration of ammonia nitrogen, acetate, propionate, and butyrate. In blood serum, CAP supplementation increased (p < 0.05) the glucose concentration and decreased (p < 0.05) the concentration of non-esterified fatty acids. However, CAP supplementation did not affect (p > 0.05) the serum concentration of urea and beta-hydroxybutyrate. In conclusion, capsaicin can be used as a dietary additive to improve the productive performance, milk composition, and nutrient digestibility in dairy cows and, at the same time, improve the ruminal concentration of total volatile fatty acids and serum levels of glucose and non-esterified fatty acids.
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Affiliation(s)
| | - Juan Eduardo Godina-Rodríguez
- Campo Experimental Uruapan, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Av. Latinoamérica 1001, Uruapan C.P. 60150, Michoacán, Mexico;
| | - Jonathan Raúl Garay-Martínez
- Campo Experimental Las Huastecas, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Altamira C.P. 89610, Tamaulipas, Mexico;
| | - Alejandro Lara-Bueno
- Departamento de Zootecnia, Universidad Autónoma Chapingo, Chapingo C.P. 56230, Mexico;
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Duarte VDS, Porcellato D. Host DNA depletion methods and genome-centric metagenomics of bovine hindmilk microbiome. mSphere 2024; 9:e0047023. [PMID: 38054728 PMCID: PMC10826364 DOI: 10.1128/msphere.00470-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/20/2023] [Indexed: 12/07/2023] Open
Abstract
Bovine mastitis is a multi-etiological and complex disease, resulting in serious economic consequences for dairy farmers and industry. In recent years, the microbiological evaluation of raw milk has been investigated in-depth using next-generation sequencing approaches such as metataxonomic analysis. Despite this, host DNA is a major concern in the shotgun metagenomic sequencing of microbial communities in milk samples, and it represents a big challenge. In this study, we aimed to evaluate different methods for host DNA depletion and/or microbial DNA enrichment and assess the use of PCR-based whole genome amplification in milk samples with high somatic cell count (SCC) by using short- and long-read sequencing technologies. Our results evidenced that DNA extraction performed differently in terms of host DNA removal, impacting metagenome composition and functional profiles.. Moreover, the ratio of SCC/bacteria ultimately impacts microbial DNA yield, and samples with low SCC (SCC below 100,000 cells/mL) are the most problematic. When milk samples with high SCC (SCC above 200,000 cells/mL) underwent multiple-displacement amplification (MDA), we successfully recovered high-quality metagenome-assembled genomes (MAGs), and long-read sequencing was feasible even for samples with low DNA concentration. By associating MDA and short-read sequencing, we recovered two times more MAGs than in untreated samples, and an ongoing co-infection not reported by traditional methods was detected for mastitis pathogen. Overall, this new approach will improve the detection of mastitis-associated microorganisms and make it possible to examine host-microbiome interactions in bovine mastitis.IMPORTANCENext-generation sequencing technologies have been widely used to gain new insights into the diversity of the microbial community of milk samples and dairy products for different purposes such as microbial safety, profiling of starter cultures, and host-microbiome interactions. Milk is a complex food matrix, and additionally, the presence of host nucleic acid sequences is considered a contaminant in untargeted high-throughput sequencing studies. Therefore, genomic-centric metagenomic studies of milk samples focusing on the health-disease status in dairy cattle are still scarce, which makes it difficult to evaluate the microbial ecophysiology of bovine hindmilk. This study provides an alternative method for genome-centric metagenome studies applied to hindmilk samples with high somatic cell content, which is indispensable to examining host-microbiome interactions in bovine mastitis.
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Affiliation(s)
- Vinícius da Silva Duarte
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
| | - Davide Porcellato
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
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Asselstine V, Medrano JF, Muniz MMM, Mallard BA, Karrow NA, Cánovas A. Novel lncRNA regulatory elements in milk somatic cells of Holstein dairy cows associated with mastitis. Commun Biol 2024; 7:98. [PMID: 38225372 PMCID: PMC10789785 DOI: 10.1038/s42003-024-05764-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/01/2024] [Indexed: 01/17/2024] Open
Abstract
Despite regulatory elements such as long non - coding RNAs representing most of the transcriptome, the functional understanding of long non - coding RNAs in relation to major health conditions including bovine mastitis is limited. This study examined the milk somatic cell transcriptome from udder quarters of 6 Holstein dairy cows to identify differentially expressed long non - coding RNAs using RNA - Sequencing. Ninety - four differentially expressed long non - coding RNAs are identified, 5 of which are previously annotated for gene name and length, 11 are annotated for gene name and 78 are novel, having no gene name or length previously annotated. Significant inflammatory response and regulation of immune response pathways (false discovery rate < 0.05) are associated with the differentially expressed long non - coding RNAs. QTL annotation analysis revealed 31 QTL previously annotated in the genomic regions of the 94 differentially expressed long non - coding RNAs, and the majority are associated with milk traits. This research provides a better understanding of long non - coding RNAs regulatory elements in milk somatic cells, which may enhance current breeding strategies for more adaptable or high mastitis resistant cattle.
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Affiliation(s)
- Victoria Asselstine
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, N1G 2W1, Guelph, ON, Canada
| | - Juan F Medrano
- Department of Animal Science, University of California-Davis, 95616, Davis, CA, USA
| | - Malane M M Muniz
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, N1G 2W1, Guelph, ON, Canada
| | - Bonnie A Mallard
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, N1G 2W1, Guelph, ON, Canada
| | - Niel A Karrow
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, N1G 2W1, Guelph, ON, Canada
| | - Angela Cánovas
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, N1G 2W1, Guelph, ON, Canada.
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Ghiasi H, Khaldari M, Taherkhani R. Identification of hub genes associated with somatic cell score in dairy cow. Trop Anim Health Prod 2023; 55:349. [PMID: 37796357 DOI: 10.1007/s11250-023-03766-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 09/19/2023] [Indexed: 10/06/2023]
Abstract
CONTEXT Somatic cell count (SCC) is used as an indicator of udder health. The log transformation of SCC is called somatic cell score (SCS). AIM Several QTL and genes have been identified that are associated with SCS. This study aimed to identify the most important genes associated with SCS. METHODS This study compiled 168 genes that were reported to be significantly linked to SCS. Pathway analysis and network analysis were used to identify hub genes. KEY RESULTS Pathway analysis of these genes identified 73 gene ontology (GO) terms associated with SCS. These GO terms are associated with molecular function, biological processes, and cellular components, and the identified pathways are directly or indirectly linked with the immune system. In this study, a gene network was constructed, and from this network, the 17 hub genes (CD4, CXCL8, TLR4, STAT1, TLR2, CXCL9, CCR2, IGF1, LEP, SPP1, GH1, GHR, VWF, TNFSF11, IL10RA, NOD2, and PDGFRB) associated to SCS were identified. The subnetwork analysis yielded 10 clusters, with cluster 1 containing all identified hub genes (except for the VWF gene). CONCLUSION Most hub genes and pathways identified in our study were mainly involved in inflammatory and cytokine responses. IMPLICATIONS Result obtained in current study provides knowledge of the genetic basis and biological mechanisms controlling SCS. Therefore, the identified hub genes may be regarded as the main gene for the genomic selection of mastitis resistance.
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Affiliation(s)
- Heydar Ghiasi
- Department of Animal Science, Faculty of Agricultural Science, Payame Noor University, Tehran, 19395-4697, Iran.
| | - Majid Khaldari
- Department of Animal Science, Faculty of Agriculture, Lorestan University, Khorram-Abad, Iran
| | - Reza Taherkhani
- Department of Animal Science, Faculty of Agricultural Science, Payame Noor University, Tehran, 19395-4697, Iran
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Schadt I. Health concerns about possible long-term effects of legally marketed milk and dairy from animals with intramammary infections. Front Public Health 2023; 11:1200924. [PMID: 37701910 PMCID: PMC10494540 DOI: 10.3389/fpubh.2023.1200924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 08/01/2023] [Indexed: 09/14/2023] Open
Abstract
Milk and dairy from animals with subclinical mastitis infections are marketable. Mastitis is detected with the somatic cell count (SCC). The EU regulation, among the stricter ones, limits an average of 400,000 somatic cells/ml in milk. Other countries have higher or no thresholds. This level suggests 40% of infected animals, and we indeed consume mastitic milk and dairy. A worldwide prevalence of dairy cattle and buffaloes with subclinical mastitis is estimated to range between 34 and 46%. The current food safety regulations account for mastitis pathogens, their toxins, and the risk of antimicrobial residues, but milk from animals with mastitis contains also compounds that derive from an immune response and inflammation process with biological function for the offspring. To the best of the current knowledge, it cannot be excluded that these compounds do not interfere with human homeostasis and that they do not contribute to redox or cytokine dysregulation that, in turn, could promote certain chronic diseases. These compounds include radicals, oxidation products, nitrosamines, and proinflammatory cytokines with nitrosamines being already recognized as probable carcinogens. Mastitis also alters the composition of caseins, plasmin, and plasminogen activators, which may be related to increased transformation into amyloid with similar characteristics as the fibrils associated with Alzheimer's disease. We should determine whether these bioactive compounds could, alone or in combination, represent any long-term risk to the consumer's health. Adapted regulations and concomitant subsidies for farmers are suggested, for sensing tools that reveal individual SCC and mastitis at milking. Frequent SCC determination is the prerequisite for any mastitis control program.
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Affiliation(s)
- Iris Schadt
- Research Section for Nutraceuticals and Health Products, Consorzio per la Ricerca nel Settore della Filiera Lattiero-Casearia e dell'Agroalimentare (CoRFiLaC), Ragusa, Italy
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Rullo R, Caira S, Nicolae I, Marino F, Addeo F, Scaloni A. A Genotyping Method for Detecting Foreign Buffalo Material in Mozzarella di Bufala Campana Cheese Using Allele-Specific- and Single-Tube Heminested-Polymerase Chain Reaction. Foods 2023; 12:2399. [PMID: 37372609 DOI: 10.3390/foods12122399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/31/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Mozzarella di Bufala Campana (MdBC) cheese is a Protected Designation of Origin (PDO) product that is important for the economy and cultural heritage of the Campania region. Food fraud can undermine consumers' trust in this dairy product and harm the livelihood of local producers. The current methods for detecting adulteration in MdBC cheese due to the use of buffalo material from foreign countries could exhibit limitations associated with the required use of expensive equipment, time-consuming procedures, and specialized personnel. To address these limits here, we propose a rapid, reliable, and cost-effective genotyping method that can detect foreign buffalo milk in a counterpart from the PDO area and in MdBC cheese, ensuring the quality and authenticity of the latter dairy product. This method is based on dedicated allele-specific and single-tube heminested polymerase chain reaction procedures. By using allele-specific primers that are designed to detect the nucleotide g.472G>C mutation of the CSN1S1Bbt allele, we distinguished an amplicon of 330 bp in the amplification product of DNA when extracted from milk and cheese, which is specific to the material originating from foreign countries. By spiking foreign milk samples with known amounts of the counterpart from the PDO area, the sensitivity of this assay was determined to be 0.01% v/v foreign to PDO milk. Based on a rough estimate of its simplicity, reliability, and cost, this method could be a valuable tool for identifying adulterated buffalo PDO dairy products.
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Affiliation(s)
- Rosario Rullo
- Institute for the Animal Production System in the Mediterranean Environment, National Research Council, 80055 Portici, Italy
| | - Simonetta Caira
- Institute for the Animal Production System in the Mediterranean Environment, National Research Council, 80055 Portici, Italy
| | - Ioana Nicolae
- Research and Development Institute for Bovine, 077015 Balotesti, Romania
| | - Francesca Marino
- Department of Clinical Medicine and Surgery, Endocrinology Unit, University Federico II, 80131 Naples, Italy
| | - Francesco Addeo
- Dipartimento di Agraria, Università degli Studi di Napoli "Federico II", 80055 Portici, Italy
| | - Andrea Scaloni
- Institute for the Animal Production System in the Mediterranean Environment, National Research Council, 80055 Portici, Italy
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12
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Horstmann G, Schäfer J, Rosenberger M, Seitl I, Hinrichs J, Fischer L. The behavior of cathepsin D during milk processing and its contribution to bitterness in a model fresh cheese. J Dairy Sci 2023:S0022-0302(23)00300-4. [PMID: 37268572 DOI: 10.3168/jds.2022-22914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 01/29/2023] [Indexed: 06/04/2023]
Abstract
The bovine endopeptidase cathepsin D was investigated regarding its temperature-dependent inactivation and ability to form bitter peptides within a spiked model fresh cheese. Cathepsin D was found to be more susceptible than other milk endogenous peptidases to temperature treatments in skim milk. Inactivation kinetics revealed decimal reduction times of 5.6 min to 10 s in a temperature range from 60 to 80°C. High temperature and ultra-high temperature (UHT) treatments from 90 to 140°C completely inactivated cathepsin D within 5 s. A residual cathepsin D activity of around 20% was detected under pasteurization conditions (72°C for 20 s). Therefore, investigations were done to estimate the effect of residual cathepsin D activity on taste in a model fresh cheese. The UHT-treated skim milk was spiked with cathepsin D and acidified with glucono-δ-lactone to produce a model fresh cheese. A trained bitter-sensitive panel was not able to distinguish cathepsin D-spiked model fresh cheeses from the control model fresh cheeses in a triangle test. Model fresh cheese samples were also analyzed for known bitter peptides derived from casein fractions using a HPLC-tandem mass spectrometry (MS) approach. In accordance with the sensory evaluation, the MS analyses revealed that the bitter peptides investigated within the cathepsin D-spiked model fresh cheese were not found or were below the limit of detection. Even though cathepsin D may be present during the fermentation of pasteurized milk, it does not seem to be responsible for bitter peptide formation from milk proteins on its own.
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Affiliation(s)
- Gudrun Horstmann
- Department of Biotechnology and Enzyme Science, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 25, 70599 Stuttgart, Germany
| | - Johannes Schäfer
- Department of Soft Matter Science and Dairy Technology, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 21, 70599 Stuttgart, Germany
| | - Melanie Rosenberger
- Department of Soft Matter Science and Dairy Technology, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 21, 70599 Stuttgart, Germany
| | - Ines Seitl
- Department of Biotechnology and Enzyme Science, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 25, 70599 Stuttgart, Germany
| | - Jörg Hinrichs
- Department of Soft Matter Science and Dairy Technology, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 21, 70599 Stuttgart, Germany
| | - Lutz Fischer
- Department of Biotechnology and Enzyme Science, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 25, 70599 Stuttgart, Germany.
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13
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Sun X, Zhao R, Wang N, Zhang J, Xiao B, Huang F, Chen A. Milk somatic cell count: From conventional microscope method to new biosensor-based method. Trends Food Sci Technol 2023. [DOI: 10.1016/j.tifs.2023.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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14
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Khan MZ, Wang J, Ma Y, Chen T, Ma M, Ullah Q, Khan IM, Khan A, Cao Z, Liu S. Genetic polymorphisms in immune- and inflammation-associated genes and their association with bovine mastitis resistance/susceptibility. Front Immunol 2023; 14:1082144. [PMID: 36911690 PMCID: PMC9997099 DOI: 10.3389/fimmu.2023.1082144] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 01/06/2023] [Indexed: 02/25/2023] Open
Abstract
Bovine mastitis, the inflammation of the mammary gland, is a contagious disease characterized by chemical and physical changes in milk and pathological changes in udder tissues. Depressed immunity and higher expression of inflammatory cytokines with an elevated milk somatic cell count can be observed during mastitis in dairy cattle. The use of somatic cell count (SCC) and somatic cell score (SCS) as correlated traits in the indirect selection of animals against mastitis resistance is in progress globally. Traditional breeding for mastitis resistance seems difficult because of the low heritability (0.10-0.16) of SCC/SCS and clinical mastitis. Thus, genetic-marker-selective breeding to improve host genetics has attracted considerable attention worldwide. Moreover, genomic selection has been found to be an effective and fast method of screening for dairy cattle that are genetically resistant and susceptible to mastitis at a very early age. The current review discusses and summarizes the candidate gene approach using polymorphisms in immune- and inflammation-linked genes (CD4, CD14, CD46, TRAPPC9, JAK2, Tf, Lf, TLRs, CXCL8, CXCR1, CXCR2, C4A, C5, MASP2, MBL1, MBL2, LBP, NCF1, NCF4, MASP2, A2M, and CLU, etc.) and their related signaling pathways (Staphylococcus aureus infection signaling, Toll-like receptor signaling, NF-kappa B signaling pathway, Cytokine-cytokine receptor, and Complement and coagulation cascades, etc.) associated with mastitis resistance and susceptibility phenotypic traits (IL-6, interferon-gamma (IFN-γ), IL17, IL8, SCS, and SCC) in dairy cattle.
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Affiliation(s)
- Muhammad Zahoor Khan
- State Key Laboratory of Animal Nutrition, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
- Faculty of Veterinary and Animal Sciences, The University of Agriculture, Dera Ismail Khan, Pakistan
| | - Jingjun Wang
- State Key Laboratory of Animal Nutrition, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yulin Ma
- State Key Laboratory of Animal Nutrition, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Tianyu Chen
- State Key Laboratory of Animal Nutrition, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Mei Ma
- State Key Laboratory of Animal Nutrition, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Qudrat Ullah
- Faculty of Veterinary and Animal Sciences, The University of Agriculture, Dera Ismail Khan, Pakistan
| | - Ibrar Muhammad Khan
- Anhui Province Key Laboratory of Embryo Development and Reproduction Regulation, Anhui Province Key Laboratory of Environmental Hormone and Reproduction, School of Biological and Food Engineering, Fuyang Normal University, Fuyang, China
| | - Adnan Khan
- Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Zhijun Cao
- State Key Laboratory of Animal Nutrition, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shuai Liu
- State Key Laboratory of Animal Nutrition, Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control, College of Animal Science and Technology, China Agricultural University, Beijing, China
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15
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Reuben RC, Langer D, Eisenhauer N, Jurburg SD. Universal drivers of cheese microbiomes. iScience 2023; 26:105744. [PMID: 36582819 PMCID: PMC9792889 DOI: 10.1016/j.isci.2022.105744] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/25/2022] [Accepted: 12/02/2022] [Indexed: 12/14/2022] Open
Abstract
The culinary value, quality, and safety of cheese are largely driven by the resident bacteria, but comparative analyses of the cheese microbiota across cheese types are scarce. We present the first global synthesis of cheese microbiomes. Following a systematic literature review of cheese microbiology research, we collected 16S rRNA gene amplicon sequence data from 824 cheese samples spanning 58 cheese types and 16 countries. We found a consistent, positive relationship between microbiome richness and pH, and a higher microbial richness in cheeses derived from goat milk. In contrast, we found no relationship between pasteurization, geographic location, or salinity and richness. Milk and cheese type, geographic location, and pasteurization collectively explained 65% of the variation in microbial community composition. Importantly, we identified four universal cheese microbiome types, driven by distinct dominant taxa. Our study reveals notable diversity patterns among the cheese microbiota, which are driven by geography and local environmental variables.
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Affiliation(s)
- Rine Christopher Reuben
- German Centre of Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany
- Institute of Biology, Leipzig University, Puschstraße 4, 04103 Leipzig, Germany
| | - Désirée Langer
- German Centre of Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany
| | - Nico Eisenhauer
- German Centre of Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany
- Institute of Biology, Leipzig University, Puschstraße 4, 04103 Leipzig, Germany
| | - Stephanie D. Jurburg
- German Centre of Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany
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16
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Effects of Supplementary Concentrate and/or Rumen-protected Lysine Plus Methionine on Productive Performance, Milk Composition, Rumen Fermentation, and Bacterial Population in Grazing, Lactating Yaks. Anim Feed Sci Technol 2023. [DOI: 10.1016/j.anifeedsci.2023.115591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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17
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Safak T, Risvanli A. Effect of somatic cell count on milk composition and some chemical properties of milk. ARQ BRAS MED VET ZOO 2022. [DOI: 10.1590/1678-4162-12854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
ABSTRACT Subclinical mastitis is a very important disease for dairy cattle farms. As a result of the deterioration of milk quality, it causes economic losses in enterprises. Milk samples of 180 cows were divided into five groups according to the somatic cell count. Some chemical properties and composition were measured in milk samples. The ratio of solid-non-fat, mineral matter, lactose, and protein decreased as the somatic cell count of the milk increased (P˂0.05). No statistical difference was observed between the fat content of milk and the level of somatic cell count (P˃0.05). Although specific gravity decreases (P˂0.05), the electrical conductivity increases (P˂0.001) in milk with high levels of somatic cell count. The milk quality of dairy cattle deteriorates due to the high somatic cell count. Therefore, regular monitoring of somatic cell count is recommended in dairy farms to monitor changes in fat, protein, solid-non-fat, lactose, and mineral matter ratios as well as some chemical properties that make up the milk composition.
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18
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Activities of indigenous proteases in cow, buffalo and goat milk of Indian subcontinent and their correlation with somatic cell count. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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19
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Zemanova M, Langova L, Novotná I, Dvorakova P, Vrtkova I, Havlicek Z. Immune mechanisms, resistance genes, and their roles in the prevention of mastitis in dairy cows. Arch Anim Breed 2022; 65:371-384. [PMID: 36415759 PMCID: PMC9673033 DOI: 10.5194/aab-65-371-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 09/05/2022] [Indexed: 01/25/2023] Open
Abstract
Mastitis is one of the most important diseases of the mammary gland. The increased incidence of this disease in cows is due to the breeding of dairy cattle for higher yields, which is accompanied by an increased susceptibility to mastitis. Therefore, the difficulty involved with preventing this disease has increased. An integral part of current research is the elimination of mastitis in order to reduce the consumption of antibiotic drugs, thereby reducing the resistance of microorganisms and decreasing companies' economic losses due to mastitis (i.e. decreased milk yield, increased drug costs, and reduced milk supply). Susceptibility to mastitis is based on dairy cows' immunity, health, nutrition, and welfare. Thus, it is important to understand the immune processes in the body in order to increase the resistance of animals. Recently, various studies have focused on the selection of mastitis resistance genes. An important point is also the prevention of mastitis. This publication aims to describe the physiology of the mammary gland along with its immune mechanisms and to approximate their connection with potential mastitis resistance genes. This work describes various options for mastitis elimination and focuses on genetic selection and a closer specification of resistance genes to mastitis. Among the most promising resistance genes for mastitis, we consider CD14, CXCR1, lactoferrin, and lactoglobulin.
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20
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Neculai-Valeanu AS, Ariton AM. Udder Health Monitoring for Prevention of Bovine Mastitis and Improvement of Milk Quality. Bioengineering (Basel) 2022; 9:608. [PMID: 36354519 PMCID: PMC9687184 DOI: 10.3390/bioengineering9110608] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 08/05/2023] Open
Abstract
To maximize milk production, efficiency, and profits, modern dairy cows are genetically selected and bred to produce more and more milk and are fed copious quantities of high-energy feed to support ever-increasing milk volumes. As demands for increased milk yield and milking efficiency continue to rise to provide for the growing world population, more significant stress is placed on the dairy cow's productive capacity. In this climate, which is becoming increasingly hotter, millions of people depend on the capacity of cattle to respond to new environments and to cope with temperature shocks as well as additional stress factors such as solar radiation, animal crowding, insect pests, and poor ventilation, which are often associated with an increased risk of mastitis, resulting in lower milk quality and reduced production. This article reviews the impact of heat stress on milk production and quality and emphasizes the importance of udder health monitoring, with a focus on the use of emergent methods for monitoring udder health, such as infrared thermography, biosensors, and lab-on-chip devices, which may promote animal health and welfare, as well as the quality and safety of dairy products, without hindering the technological flow, while providing significant benefits to farmers, manufacturers, and consumers.
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21
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Krishna N, Vishwakarma S, Katara P. Identification and annotation of milk associated genes from milk somatic cells using expression and RNA-seq data. Bioinformation 2022; 18:703-709. [PMID: 37323558 PMCID: PMC10266364 DOI: 10.6026/97320630018703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/31/2022] [Accepted: 08/31/2022] [Indexed: 09/20/2023] Open
Abstract
It is of interest to identify and annotate milk associated genes using expression profiling and RNA-Seq data from milk somatic cells. RNA-Seq data was pre-processed and mapping was done to identify differentially expressed genes (DEG). The functional insights about the up and down regulated genes were gleaned using the protein-protein interaction Network in the STRING database followed by CytoHubba analysis in Cytoscope. Gene ontology, annotation and pathway enrichment was completed using ShinyGO, David tool and QTL analysis. These analysis shows that 21 genes are linked with the secretion of milk.
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Affiliation(s)
- Neelam Krishna
- Computational Omics Lab, Centre of Bioinformatics, University of Allahabad, Prayagraj - 211002, India
| | - Shraddha Vishwakarma
- Computational Omics Lab, Centre of Bioinformatics, University of Allahabad, Prayagraj - 211002, India
| | - Pramod Katara
- Computational Omics Lab, Centre of Bioinformatics, University of Allahabad, Prayagraj - 211002, India
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22
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Giglioti R, Polli H, Tainá Azevedo B, Morita Katiki L, Eugênio Vercesi Filho A. Detection and quantification of adulteration in milk and dairy products: A novel and sensitive qPCR-based method. FOOD CHEMISTRY. MOLECULAR SCIENCES 2022; 4:100074. [PMID: 35415677 PMCID: PMC8991746 DOI: 10.1016/j.fochms.2022.100074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 01/04/2022] [Accepted: 01/07/2022] [Indexed: 11/29/2022]
Abstract
A novel qPCR method was able to detect and quantify cow, buffalo, goat and sheep DNA in milk and dairy products. Established detection limit was 0.016 ng for the four species. The limit of detection of cow DNA in buffalo, goat and sheep DNA samples was 0.1% (0.01 ng) This method is able to detect and quantify adulteration between cows, buffaloes, goats and sheep dairy samples.
Species identification in dairy products has a notable importance in food traceability and adulteration control and consequently has a significant effect on the final economic value of foods. In the present study, we developed a method based on real-time quantitative PCR (qPCR) for detection and quantification of cow DNA in DNA samples from milk and dairy products from buffaloes, goats, and sheep. The qPCR reactions showed high specificity, and the amplifications only occurred to species-specific primers. The calibration curves allowed for the quantification of the amount of DNA of each species-specific primer, and the established detection limit was 0.016 ng for the four species. The detection limit of cow DNA in buffalo, goat and sheep DNA samples was 0.1% (0.01 ng). Although the present study aimed to detect and quantify cow DNA in buffalo, goat, and sheep dairy products, we believe that the qPCR assays can also be directed to differentiate and quantify goat × sheep, and/or buffalo × goat/sheep.
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Affiliation(s)
- Rodrigo Giglioti
- Instituto de Zootecnia, Rua Heitor Penteado, n. 56, Nova Odessa, São Paulo 13380-011, Brazil
| | - Hiago Polli
- Instituto de Zootecnia, Rua Heitor Penteado, n. 56, Nova Odessa, São Paulo 13380-011, Brazil
| | - Bianca Tainá Azevedo
- Instituto de Zootecnia, Rua Heitor Penteado, n. 56, Nova Odessa, São Paulo 13380-011, Brazil
| | - Luciana Morita Katiki
- Instituto de Zootecnia, Rua Heitor Penteado, n. 56, Nova Odessa, São Paulo 13380-011, Brazil
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23
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Matrix metalloproteinase-9 activity in ewes’ milk and its relationship to somatic cell counts. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Development of an Algorithm for Rapid Herd Evaluation and Predicting Milk Yield of Mastitis Cows Based on Infrared Thermography. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12136621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The aim of this study was to explore the possibility of assessing the health status of a cow’s udder using infrared thermography. We studied the effect of mastitis on cow milk yield, the effect of mastitis on udder surface skin temperature, and the dependence between severity of mastitis and udder temperature. We determined the presence of a significant relationship between the udder surface skin temperature and the milk yield of mastitis cows (Coefficient of determination = 0.886, linear Pearson correlation coefficient = −0.96), as well as the absence of a significant relationship between the udder surface skin temperature and the milk yield of healthy cows (Coefficient of determination = 0.029, linear Pearson correlation coefficient = 0.16). We substantiated the temperature ranges of the udder surface of healthy cows [32–35.9 °C] and mastitis [36.1–39 °C]. The obtained data made it possible to form an algorithm that allows a quick assessment of the herd for the presence of udder disease, using infrared images of the udder surface skin temperature.
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25
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Kułaj D, Pokorska J, Bauer EA. Associations between osteopontin gene polymorphism (OPN), milk yield, somatic cell score and age of cattle on milk antioxidant capacity. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2021.105295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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26
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Balabanova T, Ivanova M, Dimitrova-Dicheva M, Ivanova I. Composition of Kashkaval cheese manufactured from different levels of somatic cell counts in sheep milk. BIO WEB OF CONFERENCES 2022. [DOI: 10.1051/bioconf/20224501001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The purpose of the present study was to investigate the influence of somatic cell count (SCC) on the composition of Kashkaval cheese. Kashkaval cheese samples were produced from three different batches of sheep milk with low (610 000 cells/ml), medium (770 000 cells/ml), and high (1 310 000 cells/ml) SCC, respectively. The main chemical parameters, such as pH, titratable acidity, moisture content, fat content in the dry matter, protein content, sodium chloride content, and microbiological parameters (lactic acid bacteria count, pathogenic microorganisms, coliforms, psychrotrophic, yeasts and molds) were studied during the ripening and storage periods. No statistically significant (P<0.05) changes were found in the values of the chemical parameters during the ripening period. At the beginning of ripening, the total lactic acid bacteria count for all cheese samples was about 4.1 log cfu/g, then increased to 6.2 log cfu/g (at 60 days of ripening) for test samples. The data collected in this study showed a slight decrease in pH values and a gradual increase in the titratable acidity, which was an indication for retarded fermentation during storage at low temperature. The lactic acid bacteria showed good survival, but higher sensitivity was observed in Lactobacillus spp. in comparison with Streptococcus spp.
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27
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Multi-Omics Integration and Network Analysis Reveal Potential Hub Genes and Genetic Mechanisms Regulating Bovine Mastitis. Curr Issues Mol Biol 2022; 44:309-328. [PMID: 35723402 PMCID: PMC8928958 DOI: 10.3390/cimb44010023] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/29/2021] [Accepted: 01/08/2022] [Indexed: 02/07/2023] Open
Abstract
Mastitis, inflammation of the mammary gland, is the most prevalent disease in dairy cattle that has a potential impact on profitability and animal welfare. Specifically designed multi-omics studies can be used to prioritize candidate genes and identify biomarkers and the molecular mechanisms underlying mastitis in dairy cattle. Hence, the present study aimed to explore the genetic basis of bovine mastitis by integrating microarray and RNA-Seq data containing healthy and mastitic samples in comparative transcriptome analysis with the results of published genome-wide association studies (GWAS) using a literature mining approach. The integration of different information sources resulted in the identification of 33 common and relevant genes associated with bovine mastitis. Among these, seven genes—CXCR1, HCK, IL1RN, MMP9, S100A9, GRO1, and SOCS3—were identified as the hub genes (highly connected genes) for mastitis susceptibility and resistance, and were subjected to protein-protein interaction (PPI) network and gene regulatory network construction. Gene ontology annotation and enrichment analysis revealed 23, 7, and 4 GO terms related to mastitis in the biological process, molecular function, and cellular component categories, respectively. Moreover, the main metabolic-signalling pathways responsible for the regulation of immune or inflammatory responses were significantly enriched in cytokine–cytokine-receptor interaction, the IL-17 signaling pathway, viral protein interaction with cytokines and cytokine receptors, and the chemokine signaling pathway. Consequently, the identification of these genes, pathways, and their respective functions could contribute to a better understanding of the genetics and mechanisms regulating mastitis and can be considered a starting point for future studies on bovine mastitis.
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28
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Paths for improvements of smallholder dairies: Case-study on local food security in arid regions of China. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Ahmed HF, Hegazy YM, Ibrahem SA. Interrelationship of milk acute-phase proteins and casein percentage in cows and buffaloes subclinical mastitis. VETERINARY RESEARCH FORUM : AN INTERNATIONAL QUARTERLY JOURNAL 2021; 12:409-414. [PMID: 35529816 PMCID: PMC9010830 DOI: 10.30466/vrf.2020.113022.2687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 02/12/2020] [Indexed: 11/26/2022]
Abstract
A total number of 62 clinically healthy dairy animals of three farms located in Kafr El Sheikh governorate, Egypt, were subjected to field screening surveys of subclinical mastitis (SCM) using California mastitis test (CMT). The obtained results revealed that 38.80% of quarter milk samples were positive to CMT. The most frequently major causative agents isolated from the positive CMT samples were Escherichia coli, Staphylococcus aureus, and environmental streptococcus spp. Acute-phase proteins (APPs), as immunological biomarkers for SCM, including milk serum amyloid A (mSAA) and haptoglobin (Hp) were measured using ELISA. A significant positive correlation was found between the severity of the mammary infection of cow's quarter milk samples represented in somatic cell count (SCC) and each of APPs and pH values. The correlation coefficient (R) between SCC and mSAA, Hp and pH were 0.54, 0.38 and 0.73, respectively. On the other hand, there was a significant negative correlation between casein percentage in milk of SCM cases, and each of APPs, pH and the presence of bacterial pathogens in the milk samples. The obtained results threw light on the inter-relationship between SCC, mSAA, pH value and casein percentage in milk of cows and buffalo suffered from SCM. The percentage of casein in milk is considered a significant accurate tool for diagnosis of SCM and this finding offers the farmers a cheap and fast selection for diagnosis of such disease. These results presented a specific structured view on the efficacy of different diagnostic tools of SCM in dairy herds.
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Affiliation(s)
- Hossam Farouk Ahmed
- Department of Food Hygiene, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El Sheikh, Egypt; ,Correspondence Hossam Farouk Ahmed. PhD, Department of Food hygiene, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El Sheikh, Egypt. E-mail:
| | - Yamen Mohammed Hegazy
- Department of Animal Medicine, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El Sheikh, Egypt;
| | - Sameh Abdelmageed Ibrahem
- Department of Mastitis and Neonatal Diseases Research, Animal Reproduction Research Institute, Giza, Egypt.
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30
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Azevedo BT, Vercesi Filho AE, Gutmanis G, Verissimo CJ, Katiki LM, Okino CH, Cristina de Sena Oliveira M, Giglioti R. New sensitive methods for fraud detection in buffalo dairy products. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dandigunta B, Karthick A, Chattopadhyay P, Dhoble AS. Impact of temperature and surfactant addition on milk foams. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2021.110509] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Neculai-Valeanu AS, Ariton AM, Mădescu BM, Rîmbu CM, Creangă Ş. Nanomaterials and Essential Oils as Candidates for Developing Novel Treatment Options for Bovine Mastitis. Animals (Basel) 2021; 11:1625. [PMID: 34072849 PMCID: PMC8229472 DOI: 10.3390/ani11061625] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 02/07/2023] Open
Abstract
Nanomaterials have been used for diagnosis and therapy in the human medical field, while their application in veterinary medicine and animal production is still relatively new. Nanotechnology, however, is a rapidly growing field, offering the possibility of manufacturing new materials at the nanoscale level, with the formidable potential to revolutionize the agri-food sector by offering novel treatment options for prevalent and expensive illnesses such as bovine mastitis. Since current treatments are becoming progressively more ineffective in resistant bacteria, the development of innovative products based on both nanotechnology and phytotherapy may directly address a major global problem, antimicrobial resistance, while providing a sustainable animal health solution that supports the production of safe and high-quality food products. This review summarizes the challenges encountered presently in the treatment of bovine mastitis, emphasizing the possibility of using new-generation nanomaterials (e.g., biological synthesized nanoparticles and graphene) and essential oils, as candidates for developing novel treatment options for bovine mastitis.
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Affiliation(s)
- Andra Sabina Neculai-Valeanu
- Research and Development Station for Cattle Breeding Dancu, Sos. Iasi-Ungheni no. 9, 707252 Dancu, Romania; (A.M.A.); (B.M.M.)
| | - Adina Mirela Ariton
- Research and Development Station for Cattle Breeding Dancu, Sos. Iasi-Ungheni no. 9, 707252 Dancu, Romania; (A.M.A.); (B.M.M.)
- Department of Fundamental Sciences in Animal Husbandry, Faculty of Food and Animal Sciences, Iasi University of Life Sciences (IULS), Mihail Sadoveanu Alley no. 8, 700490 Iasi, Romania;
| | - Bianca Maria Mădescu
- Research and Development Station for Cattle Breeding Dancu, Sos. Iasi-Ungheni no. 9, 707252 Dancu, Romania; (A.M.A.); (B.M.M.)
- Department of Fundamental Sciences in Animal Husbandry, Faculty of Food and Animal Sciences, Iasi University of Life Sciences (IULS), Mihail Sadoveanu Alley no. 8, 700490 Iasi, Romania;
| | - Cristina Mihaela Rîmbu
- Department of Public Health, Faculty of Veterinary Medicine, Iasi University of Life Sciences (IULS), Mihail Sadoveanu Alley no. 8, 700490 Iasi, Romania;
| | - Şteofil Creangă
- Department of Fundamental Sciences in Animal Husbandry, Faculty of Food and Animal Sciences, Iasi University of Life Sciences (IULS), Mihail Sadoveanu Alley no. 8, 700490 Iasi, Romania;
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Podhorecká K, Borková M, Šulc M, Seydlová R, Dragounová H, Švejcarová M, Peroutková J, Elich O. Somatic Cell Count in Goat Milk: An Indirect Quality Indicator. Foods 2021; 10:foods10051046. [PMID: 34064642 PMCID: PMC8150430 DOI: 10.3390/foods10051046] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 04/30/2021] [Accepted: 05/06/2021] [Indexed: 01/17/2023] Open
Abstract
A high somatic cell count (SCC) impacts dairy quality to a large extent. The goal of this work was to investigate differences in goat milk composition and technological parameters according to SCC cut-off (600, 700, 800, and 1000.103/mL). Thirty-four individual milk samples of White Shorthair goats in a similar stage of lactation were investigated. The first differences in milk quality appeared already at SCC cut-off of 600.103/mL (5.58 LSCS-linear somatic cell score), yet the most striking differences were found for SCC over 1000.103/mL (6.32 LSCS), which was expressed by lowering heat stability (126 vs. 217 s, p = 0.034), increasing protein (3.41 vs. 3.04%, p = 0.009), casein (2.80 vs. 2.44%, p = 0.034) and chloride (164 vs. 147 mg/100 mL, p = 0.004) levels, as well as non-fat dry matter (8.79 vs. 8.45%, p = 0.045). It has been shown that low levels of Staphylococcus spp. bacteria (120-1600 CFU/mL) in the mammary gland correlated with decreased lactose content (4.60 vs. 4.47 g/100 g, p = 0.022). Since our results indicate that even low SCC values may significantly affect the technological properties of goat milk, SCC should therefore be routinely screened and reported to dairy manufacturers to assure the consumer of high end-product quality.
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Affiliation(s)
- Klára Podhorecká
- Department of Chemistry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic
- Correspondence:
| | - Markéta Borková
- Dairy Research Institute, Ke Dvoru 12a, 16000 Prague, Czech Republic; (M.B.); (R.S.); (H.D.); (M.Š.); (J.P.); (O.E.)
| | - Miloslav Šulc
- Food Research Institute Prague, Radiova 1285, 10200 Prague, Czech Republic;
| | - Růžena Seydlová
- Dairy Research Institute, Ke Dvoru 12a, 16000 Prague, Czech Republic; (M.B.); (R.S.); (H.D.); (M.Š.); (J.P.); (O.E.)
| | - Hedvika Dragounová
- Dairy Research Institute, Ke Dvoru 12a, 16000 Prague, Czech Republic; (M.B.); (R.S.); (H.D.); (M.Š.); (J.P.); (O.E.)
| | - Martina Švejcarová
- Dairy Research Institute, Ke Dvoru 12a, 16000 Prague, Czech Republic; (M.B.); (R.S.); (H.D.); (M.Š.); (J.P.); (O.E.)
| | - Jitka Peroutková
- Dairy Research Institute, Ke Dvoru 12a, 16000 Prague, Czech Republic; (M.B.); (R.S.); (H.D.); (M.Š.); (J.P.); (O.E.)
| | - Ondřej Elich
- Dairy Research Institute, Ke Dvoru 12a, 16000 Prague, Czech Republic; (M.B.); (R.S.); (H.D.); (M.Š.); (J.P.); (O.E.)
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Wu H, Yao S, Wang T, Wang J, Ren K, Yang H, Ma W, Ji P, Lu Y, Ma H, He C, Wei W, Zhang L, Liu G. Effects of Melatonin on Dairy Herd Improvement (DHI) of Holstein Cow with High SCS. Molecules 2021; 26:molecules26040834. [PMID: 33562613 PMCID: PMC7915447 DOI: 10.3390/molecules26040834] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/30/2021] [Accepted: 02/01/2021] [Indexed: 11/16/2022] Open
Abstract
Mastitis is a common disease in cows breeding. The milk quality will be significantly reduced with increased milk somatic cells, which often occurs in cows with mastitis. In this study, the influence of seasonal changes, age and lactation stages in the Dairy Herd Improvement (DHI) of cows was investigated. Then, the Dairy Herd Improvement (DHI) of cows with high somatic cell score (SCS) after melatonin treatment was systemically investigated. The results showed that melatonin significantly suppressed the milk somatic cell score under all of the tested conditions. The melatonin treatment also improved the milk nutritional value by reducing its fat but increasing its lactose and protein contents. The application of melatonin significantly improved the DHI. The beneficial effects of melatonin on DHI are likely attributed to the antioxidant and anti-inflammatory activities of melatonin.
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Affiliation(s)
- Hao Wu
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (H.W.); (S.Y.); (H.Y.); (W.M.); (P.J.); (L.Z.)
| | - Songyang Yao
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (H.W.); (S.Y.); (H.Y.); (W.M.); (P.J.); (L.Z.)
| | - Tiankun Wang
- Beijing Chang Ping District Animal Disease Prevention and Control Center, Beijing 102200, China;
| | - Jun Wang
- Beijing Animal Husbandry and Veterinary General Station, Beijing 100012, China; (J.W.); (K.R.); (Y.L.)
| | - Kang Ren
- Beijing Animal Husbandry and Veterinary General Station, Beijing 100012, China; (J.W.); (K.R.); (Y.L.)
| | - Hai Yang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (H.W.); (S.Y.); (H.Y.); (W.M.); (P.J.); (L.Z.)
| | - Wenkui Ma
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (H.W.); (S.Y.); (H.Y.); (W.M.); (P.J.); (L.Z.)
| | - Pengyun Ji
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (H.W.); (S.Y.); (H.Y.); (W.M.); (P.J.); (L.Z.)
| | - Yongqiang Lu
- Beijing Animal Husbandry and Veterinary General Station, Beijing 100012, China; (J.W.); (K.R.); (Y.L.)
| | - Hui Ma
- Beijing Shou Nong Food Group Co. Ltd., Beijing 100029, China; (H.M.); (C.H.); (W.W.)
| | - Changwang He
- Beijing Shou Nong Food Group Co. Ltd., Beijing 100029, China; (H.M.); (C.H.); (W.W.)
| | - Wenjuan Wei
- Beijing Shou Nong Food Group Co. Ltd., Beijing 100029, China; (H.M.); (C.H.); (W.W.)
| | - Lu Zhang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (H.W.); (S.Y.); (H.Y.); (W.M.); (P.J.); (L.Z.)
| | - Guoshi Liu
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (H.W.); (S.Y.); (H.Y.); (W.M.); (P.J.); (L.Z.)
- Correspondence: ; Tel./Fax: +86-10-6273-2735
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Moradi M, Omer AK, Razavi R, Valipour S, Guimarães JT. The relationship between milk somatic cell count and cheese production, quality and safety: A review. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2020.104884] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ndahetuye JB, Artursson K, Båge R, Ingabire A, Karege C, Djangwani J, Nyman AK, Ongol MP, Tukei M, Persson Y. MILK Symposium review: Microbiological quality and safety of milk from farm to milk collection centers in Rwanda. J Dairy Sci 2021; 103:9730-9739. [PMID: 33076184 DOI: 10.3168/jds.2020-18302] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 07/28/2020] [Indexed: 11/19/2022]
Abstract
The aim of this study was to generate knowledge on the most important milk quality and safety attributes, including somatic cell count (SCC), total bacterial count (TBC), Escherichia coli, Salmonella, and Brucella spp. antibodies and antibiotic residues in milk in the chain from farm to milk collection center (MCC) in Rwanda. In addition, we investigated farm and management factors associated with high TBC, SCC, and Salmonella counts. Raw milk was sampled at the farm and MCC levels. Milk samples were taken from dairy farms linked to 2 selected MCC in each of the 4 provinces in Rwanda. In total, 406 bulk milk samples from 406 farms and 32 bulk milk samples from 8 MCC were collected and analyzed. Farm milk average SCC varied between 180 × 103 and 920 × 103 cells/mL, whereas average SCC in milk samples at MCC varied between 170 × 103 and 1,700 × 103 cells/mL. The mean milk TBC of different farms per MCC varied between 1.1 × 106 and 1.6 × 107 cfu/mL, whereas in milk samples from different MCC, the mean TBC ranged between 5.3 × 105 and 2.4 × 108 cfu/mL. The high TBC in milk from MCC suggests proliferation or recontamination of milk by bacteria during transportation. Escherichia coli was detected in 35 of 385 farm milk samples and ranged between 5 cfu/mL and 1.1 × 104 cfu/mL, whereas in milk samples from the MCC, it was detected in 20 out 32 samples varying between 5 cfu/mL and 2.9 × 103 cfu/mL. Overall farm prevalence of Salmonella in milk samples was 14%, but no milk samples from MCC were positive for Salmonella. Five out of 22 bulk milk samples from different MCC were positive for Brucella spp. antibodies, but no Brucella antibodies were detected in milk samples from farms. The prevalence of antibiotic residues as detected by the Delvotest SP NT (DSM, Delft, the Netherlands) was low: 1.3% in farm milk samples and undetected in MCC milk samples. Lack of a separate milking area was associated with high TBC, whereas offering of supplemental feeds, keeping data of past diseases, and an unhygienic milking area were associated with high SCC. Lack of teat washing before milking was the only factor associated with Salmonella contamination of milk at the farm level. This study indicated high TBC and SCC of milk samples at the farm and MCC levels, which indicates both microbial contamination of milk and poor udder health in dairy cows. Presence of E. coli, Salmonella, and Brucella antibodies in milk was common, but finding antibiotic residues in milk was uncommon.
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Affiliation(s)
- Jean Baptiste Ndahetuye
- Reproduction, Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU) Uppsala Sweden, PO Box 7054, SE-750 07 Uppsala, Sweden; College of Agriculture, Animal Sciences and Veterinary Medicine, University of Rwanda, Musanze, Rwanda, PO Box 210, Musanze, Rwanda.
| | - Karin Artursson
- National Veterinary Institute, SE-751 89 Uppsala, Sweden; Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences (SLU), PO Box 7036, SE-750 07 Uppsala, Sweden
| | - Renée Båge
- Reproduction, Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU) Uppsala Sweden, PO Box 7054, SE-750 07 Uppsala, Sweden
| | - Alice Ingabire
- College of Agriculture, Animal Sciences and Veterinary Medicine, University of Rwanda, Musanze, Rwanda, PO Box 210, Musanze, Rwanda
| | - Callixte Karege
- College of Agriculture, Animal Sciences and Veterinary Medicine, University of Rwanda, Musanze, Rwanda, PO Box 210, Musanze, Rwanda
| | - Juvenal Djangwani
- College of Agriculture, Animal Sciences and Veterinary Medicine, University of Rwanda, Musanze, Rwanda, PO Box 210, Musanze, Rwanda
| | | | - Martin Patrick Ongol
- College of Agriculture, Animal Sciences and Veterinary Medicine, University of Rwanda, Musanze, Rwanda, PO Box 210, Musanze, Rwanda
| | - Michael Tukei
- College of Agriculture, Animal Sciences and Veterinary Medicine, University of Rwanda, Musanze, Rwanda, PO Box 210, Musanze, Rwanda
| | - Ylva Persson
- National Veterinary Institute, SE-751 89 Uppsala, Sweden
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Effect of somatic cells count in cow milk on the formation of biogenic amines in cheese. Journal of Food Science and Technology 2021; 58:3409-3416. [PMID: 34366458 DOI: 10.1007/s13197-020-04935-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/08/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
Comparative studies on physicochemical characteristics of milk with different somatic cells count (SCC) (L-low < 400,000 cells/ml, M-medium between 500,000 and 600,000 cells/ml and H-high > 1,000,000 cells/ml) and obtained cheeses, were conducted. No significant differences between samples were found. The H SCC milk was characterized by the highest total viable count. Higher levels of proteolysis were established in cheeses made from milk with SCC exceeding 500,000 cells/ml. After 10 months of ripening and cold storage the water-soluble nitrogen in total nitrogen (WSN/TN), noncasein nitrogen in total nitrogen (NCN/TN), nonprotein nitrogen in total nitrogen (NPN/TN) and free amino groups values of the sample with the highest SCC reached 28.4 ± 0.8%, 24.8 ± 0.9%, 18.3 ± 0.9% and 83.6 ± 0.3 mg/kg respectively. The biogenic amine concentration in the cheese samples from the L and M batches remained below 10 mg/kg throughout the ripening and cold storage period. The present study established an increase in the biogenic amine content during the ripening period and the cold storage of the cheeses made from milks with high SCC (batch H). The main amines accumulated at the end of the storage period (10th month) were tyramine (31.7 ± 0.3 mg/kg), putrescine (20.5 ± 0.2 mg/kg) and cadaverine (14.6 ± 0.2 mg/kg). Histamine was not found in any of the studied cheese samples.
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Nikoloudaki O, Lemos Junior WJF, Campanaro S, Di Cagno R, Gobbetti M. Role prediction of Gram-negative species in the resistome of raw cow's milk. Int J Food Microbiol 2021; 340:109045. [PMID: 33465548 DOI: 10.1016/j.ijfoodmicro.2021.109045] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 12/21/2020] [Accepted: 12/29/2020] [Indexed: 12/24/2022]
Abstract
Extended use of antibiotics in dairy farming for therapeutic and prophylactic reasons, but also the higher prevalence of antibiotic resistant bacteria (ARB) in the farm environment raised the concern of consuming raw cow's milk and its derived products. The aim of this study was to predict by shotgun metagenomic analyses the presence of antibiotic resistance genes (ARGs) mainly correlated with Gram-negative bacteria in antibiotic residue free raw cow's milk derived exclusively from healthy animal from South Tyrol (Northern Italy), chosen as a model system. Assessment of shotgun metagenomic data of reconstructed scaffolds, revealed the existence of Pseudomonas spp. as the most abundant Gram-negative species in the raw cow's milk samples bearing ARGs. Besides, ARGs also linked to lactic acid bacteria such as Lactococcus sp. and Lactobacillus sp. ARGs correlated to microbiome found in milk samples conferred resistance towards aminoglycoside-streptothricin, beta-lactamase, macrolide, tetracycline, carbapenem, cephalosporin, penam, peptide, penem, fluoroquinolone, chloramphenicol and elfamycin antibiotics. Further bioinformatic processing included de-novo reassembly of all metagenomic sequences from all milk samples in one, to reconstruct metagenome assembled genomes (MAGs), which were further used to investigate mobile genetic elements (MGE). Analyses of the reconstructed MAGs showed that, MAG 9 (Pseudomonas sp1.) contained the oriT gene (origin of transfer gene) needed for transferring virulent factors. Although the presence of Pseudomonas is common in raw cow's milk, pasteurization treatment reduces their survivability. Nevertheless, attention should be paid on Pseudomonas spp. due to their intrinsic resistance to antibiotics and their capability of transferring virulent factors to other bacteria.
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Affiliation(s)
- Olga Nikoloudaki
- Faculty of Science and Technology, Libera Università di Bolzano, Piazza Università 5, 39100 Bolzano, Italy.
| | - Wilson J F Lemos Junior
- Faculty of Science and Technology, Libera Università di Bolzano, Piazza Università 5, 39100 Bolzano, Italy.
| | - Stefano Campanaro
- Department of Biology, University of Padova, Via 8 Febbraio 1848, 2, 35122 Padova, Italy.
| | - Raffaella Di Cagno
- Faculty of Science and Technology, Libera Università di Bolzano, Piazza Università 5, 39100 Bolzano, Italy.
| | - Marco Gobbetti
- Faculty of Science and Technology, Libera Università di Bolzano, Piazza Università 5, 39100 Bolzano, Italy.
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Rumen and Hindgut Bacteria Are Potential Indicators for Mastitis of Mid-Lactating Holstein Dairy Cows. Microorganisms 2020; 8:microorganisms8122042. [PMID: 33419337 PMCID: PMC7767203 DOI: 10.3390/microorganisms8122042] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/15/2020] [Accepted: 12/18/2020] [Indexed: 02/07/2023] Open
Abstract
Mastitis is one of the major problems for the productivity of dairy cows and its classifications have usually been based on milk somatic cell counts (SCCs). In this study, we investigated the differences in milk production, rumen fermentation parameters, and diversity and composition of rumen and hindgut bacteria in cows with similar SCCs with the aim to identify whether they can be potential microbial biomarkers to improve the diagnostics of mastitis. A total of 20 dairy cows with SCCs over 500 × 103 cells/mL in milk but without clinical symptoms of mastitis were selected in this study. Random forest modeling revealed that Erysipelotrichaceae UCG 004 and the [Eubacterium] xylanophilum group in the rumen, as well as the Family XIII AD3011 group and Bacteroides in the hindgut, were the most influential candidates as key bacterial markers for differentiating "true" mastitis from cows with high SCCs. Mastitis statuses of 334 dairy cows were evaluated, and 96 in 101 cows with high SCCs were defined as healthy rather than mastitis according to the rumen bacteria. Our findings suggested that bacteria in the rumen and hindgut can be a new approach and provide an opportunity to reduce common errors in the detection of mastitis.
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Riveros-Galán DS, Obando-Chaves M. Mastitis, somatic cell count, and its impact on dairy-product quality… An omission in Colombia?: A review. REV COLOMB CIENC PEC 2020. [DOI: 10.17533/udea.rccp.v34n4a01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Mastitis is the most common disease in dairy herds and the main cause of economic losses in milk production worldwide. This inflammatory reaction of the mammary gland affects the quantity, composition and quality of milk produced and its suitability for the dairy industry. Despite of its importance, Colombia has no regulations on somatic cell count (SCC); that is, no official upper limits have been established for the dairy industry. The current quality-based payment system for raw milk does not encourage local producers to reduce the level of somatic cells. Consequently, Colombia is at a disadvantage compared to countries that include this parameter in their payment schemes and subscribe to international free trade agreements, affecting the competitiveness of the Colombian dairy sector. This article reviews the types of somatic cells, the microbiology of mastitis, its etiology and diagnosis, the changes that generate the composition of milk, and the impact of high SCCs on the quality of dairy products, such as yogurt, cheese, and milk powder. The final section offers a reflection on the problem of high SCCs in Colombia and the lack of regulations in this regard.
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Addis MF, Maffioli EM, Ceciliani F, Tedeschi G, Zamarian V, Tangorra F, Albertini M, Piccinini R, Bronzo V. Influence of subclinical mastitis and intramammary infection by coagulase-negative staphylococci on the cow milk peptidome. J Proteomics 2020; 226:103885. [DOI: 10.1016/j.jprot.2020.103885] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 06/12/2020] [Accepted: 06/21/2020] [Indexed: 12/12/2022]
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Correlation between Milk Bacteriology, Cytology and Mammary Tissue Histology in Cows: Cure from the Pathogen or Recovery from the Inflammation. Pathogens 2020; 9:pathogens9050364. [PMID: 32397457 PMCID: PMC7281236 DOI: 10.3390/pathogens9050364] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 11/17/2022] Open
Abstract
The aim of the current study was to verify the existence of a significant correlation between bacterial isolation (or not) and mammary gland inflammation, using traditional bacterial culturing and PCR, milk leucocytes distributions, and tissue histology. Twenty-two cows were tested at the level of the individual gland for bacteriological culture and real-time PCR (RT-PCR), milk composition, somatic cells count (SCC), and cell differentiation. Post-slaughter samples of teat-ends and mammary tissues were tested for histology and bacteriology by RT-PCR. The 88 glands were assigned to either outcome: 1. Healthy—no inflammation and no bacterial finding (NBF) (n = 33); 2. Inflammation and NBF (n = 26); 3. Inflammation and intra-mammary infection (n = 22) with different bacteria. Bacteriology of milk samples and that of the RT-PCR showed 91.4% agreement. In the lobule’s tissues of healthy glands, ~50% were milk producers and the other glands had dry areas with increased fat globules with a low number of leukocytes. In contrast, ~75% of the infected glands were identified as inflamed, but with no isolation of bacteria. Infiltration of mononuclear cells and neutrophils into the connective tissue was observed but not in the lobule’s lumen. In summary, the study confirms that not every mastitis/inflammation is also an infection.
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New high-sensitive rhAmp method for A1 allele detection in A2 milk samples. Food Chem 2020; 313:126167. [DOI: 10.1016/j.foodchem.2020.126167] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 11/14/2019] [Accepted: 01/05/2020] [Indexed: 02/06/2023]
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Stocco G, Summer A, Cipolat-Gotet C, Zanini L, Vairani D, Dadousis C, Zecconi A. Differential Somatic Cell Count as a Novel Indicator of Milk Quality in Dairy Cows. Animals (Basel) 2020; 10:E753. [PMID: 32357407 PMCID: PMC7277798 DOI: 10.3390/ani10050753] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/20/2020] [Accepted: 04/23/2020] [Indexed: 12/21/2022] Open
Abstract
Recent available instruments allow to record the number of differential somatic cell count (DSCC), representing the combined proportion of polymorphonuclear leukocytes and lymphocytes, on a large number of milk samples. Milk DSCC provides indirect information on the udder health status of dairy cows. However, literature is limited regarding the effect of DSCC on milk composition at the individual cow level, as well as its relation to the somatic cell score (SCS). Hence, the aims of this study were to (i) investigate the effect of different levels of DSCC on milk composition (fat, protein, casein, casein index, and lactose) and (ii) explore the combined effect of DSCC and SCS on these traits. Statistical models included the fixed effects of days in milk, parity, SCS, DSCC and the interaction between SCS × DSCC, and the random effects of herd, animal within parity, and repeated measurements within cow. Results evidenced a decrease of milk fat and an increase in milk fatty acids at increasing DSCC levels, while protein, casein and their proportion showed their lowest values at the highest DSCC. A positive association was found between DSCC and lactose. The interaction between SCS and DSCC was important for lactose and casein index, as they varied differently upon high and low SCS and according to DSCC levels.
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Affiliation(s)
- Giorgia Stocco
- Department of Veterinary Science, University of Parma, Via del Taglio 10, 43126 Parma, Italy; (G.S.); (A.S.); (C.D.)
| | - Andrea Summer
- Department of Veterinary Science, University of Parma, Via del Taglio 10, 43126 Parma, Italy; (G.S.); (A.S.); (C.D.)
| | - Claudio Cipolat-Gotet
- Department of Veterinary Science, University of Parma, Via del Taglio 10, 43126 Parma, Italy; (G.S.); (A.S.); (C.D.)
| | - Lucio Zanini
- Associazione Regionale Allevatori Lombardia, Via Kennedy 30, 26013 Crema, Italy; (L.Z.); (D.V.)
| | - Diego Vairani
- Associazione Regionale Allevatori Lombardia, Via Kennedy 30, 26013 Crema, Italy; (L.Z.); (D.V.)
| | - Christos Dadousis
- Department of Veterinary Science, University of Parma, Via del Taglio 10, 43126 Parma, Italy; (G.S.); (A.S.); (C.D.)
| | - Alfonso Zecconi
- Department of Biomedical, Surgical and Dental Sciences, University of Milano, Via Celoria 10, 20133 Milano, Italy;
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Cells and Cytokines in Milk of Subclinically Infected Bovine Mammary Glands after the Use of Immunomodulatory Composition GLP 810. Mediators Inflamm 2020; 2020:8238029. [PMID: 32256195 PMCID: PMC7085878 DOI: 10.1155/2020/8238029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 12/17/2019] [Accepted: 02/21/2020] [Indexed: 12/21/2022] Open
Abstract
The aim of this study was to investigate the effect of intramammary infusions of natural composition GLP 810 with immunomodulating properties on the local nonspecific cellular and humoral immune response in cows with subclinical mastitis. The composition GLP 810 consists of lactic acid, lysozyme, glycopeptides, and 0.9% solution of NaCl. The following parameters were studied: (1) leukocyte differential distribution in milk, (2) expression of cytokines in milk leukocytes, (3) antibacterial activity, and (4) milk quality. Nineteen mammary glands in five lactating cows were infused with 10 mL of GLP 810, and nineteen other glands from five control cows were treated with 10 mL 0.9% NaCl. The results showed that after intramammary administration of the composition GLP 810 three times with 48 h intervals, the following effects on leukocyte populations in milk were observed: (1) an increase in the number of polymorphonuclear leukocytes and lymphocytes and (2) a decrease in the number of macrophages. A reduction in the number of pathogenic bacteria was also detected. The analyses of tumour necrosis factor-alpha, interleukin-10, and beta-defensin-2 revealed that the production of the aforementioned cytokines significantly increased, whereas no significant effects on interleukin-1 and caspase-6 expression in milk leukocytes were recorded. However, there were significant differences between mammary glands with high and low milk somatic cell count. The results suggest that the composition GLP 810 has an immunomodulatory effect on mammary glands and it could be used for improving the immune response in cows with subclinical mastitis during lactation.
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Han Z, Fan Y, Yang Z, Loor JJ, Yang Y. Mammary Transcriptome Profile during Peak and Late Lactation Reveals Differentially Expression Genes Related to Inflammation and Immunity in Chinese Holstein. Animals (Basel) 2020; 10:ani10030510. [PMID: 32204353 PMCID: PMC7143190 DOI: 10.3390/ani10030510] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/17/2020] [Accepted: 03/18/2020] [Indexed: 12/27/2022] Open
Abstract
Simple Summary Milk somatic cell count, referring to the total number of somatic cells per milliliter of bovine milk, changes regularly during the lactation cycle. The somatic cell count of healthy cows is usually higher in late lactation than in peak lactation. When the inflammatory response in dairy cow mammary gland becomes more intense, the milk somatic cell count increases together with the reduction of milk quality and yield. Autoimmunity was thought to play an important role in the prevention of mastitis in late lactation of dairy cattle. However, the underlying mechanisms related to the gene expression levels during the process remain unknown. In this study, transcriptome sequencing was performed to screen the differentially expressed genes related to the inflammation and immunity in healthy Chinese Holstein mammary glands. Our findings are helpful to understand the physiological functions of mammary inflammation of Chinese Holstein during late lactation. Abstract Somatic cell count (SCC) in milk is widely used in the dairy industry, as an indicator of the health of mammary gland. While the SCC of dairy cattle was higher in late lactation than in peak lactation, its association with gene expressions of mammary gland were largely unknown. In this study, a transcriptomic sequencing approach and bioinformatics analysis were used to investigate the differential expressed genes (DEGs) associated with inflammation and immunity between peak and late periods of lactation in Chinese Holstein. A total of 446 DEGs (padj < 0.05 and fold change >2) were identified, 50 of which belonged to seven pathways and five terms related to inflammation and immunity. Our data suggested that the activation of nuclear transcription factor-κB (NF-κB) pathway and Toll-like receptor signaling pathway caused inflammatory response, and the activation of chemokine signaling pathway and cytokine–cytokine receptor interaction signaling pathway caused a protective immune response to ensure dairy cows health during late lactation. Our findings deepen the understanding of the molecular mechanism and physiological functions of mammary inflammation in Chinese Holstein during late lactation.
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Affiliation(s)
- Ziyin Han
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (Z.H.); (Y.F.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Yongliang Fan
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (Z.H.); (Y.F.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Zhangping Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (Z.H.); (Y.F.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou 225009, China
- Correspondence: (Z.Y.); (Y.Y.); Tel.: +86-0514-87979269 (Z.Y.); Tel.: +86-0514-87977081 (Y.Y.)
| | - Juan J. Loor
- Department of Animal Sciences, University of Illinois, Urbana, IL 61801, USA
| | - Yi Yang
- Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University College of Veterinary Medicine, Yangzhou 225009, China
- Correspondence: (Z.Y.); (Y.Y.); Tel.: +86-0514-87979269 (Z.Y.); Tel.: +86-0514-87977081 (Y.Y.)
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Ivanov G, Bilgucu E, Ivanova I, Dimitrova M. Volatile organic compound profiles of yoghurt produced from cow's milk with different somatic cell counts. INT J DAIRY TECHNOL 2020. [DOI: 10.1111/1471-0307.12702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Galin Ivanov
- Department of Milk and Dairy Technology Technological Faculty University of Food Technologies 26 Maritsa Blvd Plovdiv 4002 Bulgaria
| | - Ertugrul Bilgucu
- Biga Vocational High School Çanakkale Onsekiz Mart University Çanakkale 37 17200 Turkey
| | - Ivelina Ivanova
- Department of Analytical Chemistry Technological Faculty University of Food Technologies 26 Maritsa Blvd Plovdiv 4002 Bulgaria
| | - Milena Dimitrova
- Department of Milk and Dairy Technology Technological Faculty University of Food Technologies 26 Maritsa Blvd Plovdiv 4002 Bulgaria
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Quality of Mountain Sheep Milk Used for the Production of Traditional Cheeses. ANNALS OF ANIMAL SCIENCE 2020. [DOI: 10.2478/aoas-2019-0071] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The aim of the research was to assess the quality of milk from mountain sheep used for the production of traditional cheeses, taking into account the influence of the breed, the month of milking, and the content of somatic cells. Milk for the study was obtained from sheep of three mountain breeds: Podhale Zackel (PZ), Polish Mountain Sheep (PMS), and Coloured Mountain Sheep (CMS). The sheep were grazed in mountain pastures after lamb weaning, in the period from May to October in the traditional system. No influence of the breed on the examined parameters was found, except for urea content. Mountain sheep milk was characterized by a content of 19.68% solids, 8.48% fat, 6.63% protein, in which almost 76% was formed by casein (4.99%), and the average lactose content was 4.15%. Other milk parameters also did not differ between breeds: density was 1034.04 g/L, acidity 11.34°SH, and mean somatic cell content was 982.13∙103∙ml−1 (log10SCC = 5.68). The highest urea content was recorded in the milk of Coloured Mountain Sheep (280.69 mg/L) and the lowest urea content was recorded in the milk of Zackel sheep (200.97 mg/L). The month of milking influenced the content of most milk components, but no changes in SCC content during lactation were found. Significant correlations between fat content and other milk parameters were recorded. In the case of urea content, negative, statistically significant correlations with the majority of examined parameters were found.
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50
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Ducková V, Čanigová M, Zajác P, Remeňová Z, Kročko M, Nagyová Ľ. Effect of somatic cell counts occurred in milk on quality of Slovak traditional cheese - Parenica. POTRAVINARSTVO 2019. [DOI: 10.5219/1099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The aim of this work was to compare somatic cell count in milk used for making steamed cheese Parenica in Slovak industrial dairies and small farm dairies and to find out whether somatic cell counts in milk affect the dry matter content of Parenica cheese. The samples of raw milk were taken from 3 industrial dairies (A, B, C) and from 3 farm dairies (E, F, G), produced traditional Slovak cheese Parenica in period from January untill December 2018. The somatic cell count in milk was determined by FossomaticTM 5000 (Foss, Denmark) and dry matter of cheese by oven drying method to constant weight. There were no statistically significant differences (p >0.05) for somatic cell counts in milk processed in industrial and farm dairies. Lower somatic cell counts were determined in milk amples from industrial dairies (mean value 326.55 thousand in 1 mL) in comparison to milk samples from farm dairies (mean value 507.67 thousand in 1 mL). Statistically lower dry matter content (p <0.01) in the samples of Parenica cheese was found out in farm dairy E in comparison to other dairies. The relationship between somatic cell count in milk and dry matter in cheese was confirmed by the relatively low correlation coefficients in dairies, A = 0.22; C = 0.15 and F = -0.12 and higher correlation coefficients in dairies, B = -0.32; D = 0.45 and E = -0.48. Obtaining a more accurate effect of somatic cell count on cheese quality requires the continuation of the research on a larger number of samples and consideration of other factors.
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