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Fusar Poli S, Monistero V, Pollera C, Freu G, Bronzo V, Piccinini R, Nocetti M, Sala G, Veiga Dos Santos M, Moroni P, Addis MF. Impact of sample refrigeration and freezing on the bacteriological counts of different bedding materials for dairy cows. BMC Vet Res 2024; 20:410. [PMID: 39267023 PMCID: PMC11391596 DOI: 10.1186/s12917-024-04247-w] [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: 07/27/2023] [Accepted: 08/26/2024] [Indexed: 09/14/2024] Open
Abstract
BACKGROUND Different organic and inorganic bedding materials can be used in dairy farms. Among organic materials, there is an increasing interest in alternative substrates based on recycled manure solids (RMS). Microbiological analyses are crucial to monitor the microbial load and evaluate the presence of pathogens impacting animal welfare and health. However, logistic factors may hamper the possibility of immediately sending fresh samples to the laboratory, requiring storage in cooled conditions before analysis. METHODS We assessed the impact of sample refrigeration and freezing of different organic and inorganic bedding substrates including separated raw manure solids (SRMS), anaerobically digested manure solids (ADMS), and new sand (NS), on the total bacterial count (TBC) and on different microbial classes. RESULTS The TBC was higher in fresh NS and ADMS than in refrigerated and frozen samples of the same substrates; in addition, the TBC of ADMS was higher in refrigerated than frozen samples. The TBC of SRMS did not change significantly with refrigeration and freezing. Freezing reduced the total Gram-negative bacterial count more than refrigeration in all substrates. In fresh NS, Gram-negatives were higher than in both refrigerated and frozen NS. Escherichia coli counts were significantly lower in frozen than in refrigerated SRMS. However, both refrigeration and freezing of ADMS resulted in no E. coli growth. The coliform counts were also lower in frozen than refrigerated NS and SRMS. Frozen NS and ADMS showed lower counts compared to refrigeration for Gram-negative bacteria other than E. coli and coliforms. On the other hand, cold storage did not significantly impact the streptococci and streptococcus-like organisms (SSLO) count of all evaluated bedding substrates. CONCLUSION Refrigeration and freezing affect the bacteriological results of bedding substrates, with freezing generally leading to lower counts than refrigeration. Whenever possible, preference should be given to analyzing fresh bedding samples, however, when necessary, refrigeration would be recommended over freezing, while acknowledging that the measured bacterial load might underestimate the actual microbial content.
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Affiliation(s)
- Sara Fusar Poli
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy
| | - Valentina Monistero
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy
| | - Claudia Pollera
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy
- Laboratory of Animal Infectious Diseases (MiLAB), University of Milan, Lodi, Italy
| | - Gustavo Freu
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, Brazil
| | - Valerio Bronzo
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy
- Laboratory of Animal Infectious Diseases (MiLAB), University of Milan, Lodi, Italy
| | - Renata Piccinini
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy
- Laboratory of Animal Infectious Diseases (MiLAB), University of Milan, Lodi, Italy
| | - Marco Nocetti
- Consorzio del Formaggio Parmigiano Reggiano, Reggio Emilia, Italy
| | - Giulia Sala
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | - Marcos Veiga Dos Santos
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, Brazil
| | - Paolo Moroni
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy
- Laboratory of Animal Infectious Diseases (MiLAB), University of Milan, Lodi, Italy
- Animal Health Diagnostic Center, Quality Milk Production Services (QMPS), Cornell University, Ithaca, NY, USA
| | - M Filippa Addis
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy.
- Laboratory of Animal Infectious Diseases (MiLAB), University of Milan, Lodi, Italy.
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Freu G, Fusar Poli S, Monistero V, Biscarini F, Rota N, Hossain D, Gusmara C, Musa L, Gioia G, Leso L, Veiga Dos Santos M, Moroni P, Addis MF, Bronzo V. Effect of a lime-based bedding conditioner on physical-chemical characteristics and microbiological counts of recycled manure solids. Front Vet Sci 2024; 11:1408798. [PMID: 39076304 PMCID: PMC11284115 DOI: 10.3389/fvets.2024.1408798] [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: 03/28/2024] [Accepted: 06/03/2024] [Indexed: 07/31/2024] Open
Abstract
Bedding materials are aimed at providing a safe and comfortable resting environment for cows. Control of pathogen proliferation in these substrates is crucial to prevent intramammary infections in dairy cows, as these can significantly impact milk quality, cow health, and farm productivity. This is particularly relevant in the case of organic bedding substrates, including manure-derived materials. This study aimed to evaluate the in vitro effect of a lime-based conditioner (LBC), composed of CaCO3MgCO3 andCa(OH) 2 * Mg(OH)2, at increasing concentrations on the physical-chemical characteristics and bacterial counts of untreated anaerobically digested manure solids (ADMS) and separated raw manure solids (SRMS). Unused ADMS and SRMS were evaluated at four LBC weight-based concentrations: 0 (as untreated control), 10, 15, and 20% of LBC inclusion. The bedding materials were assessed immediately after LBC addition (0 h) and after 24, 72, and 168 h of storage at 28°C. The dry matter content (DM), and pH were measured for all the time points. Standard microbiological methods were used to assess total bacterial counts (TBC), other Gram-negative bacteria, coliforms, Escherichia coli, and streptococci and streptococci-like organism (SSLO). It was observed a linear increase in both DM and pH with increasing concentrations of LBC. Specifically, for each percentage unit increase of LBC, the DM of ADMS and SRMS increased by 0.73 and 0.71%, respectively. Similarly, for each percentage unit of LBC, the pH of ADMS and SRMS increased by 0.15 and 0.19, respectively. Conversely, a linear decrease in TBC, Gram-negative bacteria, coliforms, E. coli, and SSLO was observed with increasing concentrations of the LBC. Manure-derived materials without the inclusion of the LBC had bacterial counts that tended to remain high or increase over time. Otherwise, bedding materials with LBC application had reduced bacterial counts. Based on the results of the present study, it was observed that the higher the concentration of LBC, the more significant the reduction of bacterial counts. Specifically, bacterial recovery was lower when higher concentrations of LBC were applied. Our findings underscore the potential of LBC in effectively controlling environmental bacteria and improving the physical-chemical characteristics of manure-derived bedding materials to improve cow health and welfare.
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Affiliation(s)
- Gustavo Freu
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, São Paulo, Brazil
- Department of Veterinary Medicine and Animal Sciences-DIVAS, University of Milan, Lodi, Italy
| | - Sara Fusar Poli
- Department of Veterinary Medicine and Animal Sciences-DIVAS, University of Milan, Lodi, Italy
| | - Valentina Monistero
- Department of Veterinary Medicine and Animal Sciences-DIVAS, University of Milan, Lodi, Italy
- Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, Lodi, Italy
| | - Filippo Biscarini
- National Research Council, Institute of Agricultural Biology and Biotechnology (CNR-IBBA), Milan, Italy
| | | | - Delower Hossain
- Department of Veterinary Medicine and Animal Sciences-DIVAS, University of Milan, Lodi, Italy
- Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, Lodi, Italy
- Department of Medicine and Public Health, Faculty of Animal Science and Veterinary Medicine, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Claudia Gusmara
- Department of Veterinary Medicine and Animal Sciences-DIVAS, University of Milan, Lodi, Italy
- Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, Lodi, Italy
| | - Laura Musa
- Department of Veterinary Medicine and Animal Sciences-DIVAS, University of Milan, Lodi, Italy
- Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, Lodi, Italy
| | - Gloria Gioia
- Quality Milk Production Services, Animal Health Diagnostic Center, Cornell University, Ithaca, NY, United States
| | - Lorenzo Leso
- Department of Agricultural, Food, and Forest Sciences-SAAF, University of Palermo, Palermo, Italy
| | - Marcos Veiga Dos Santos
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, São Paulo, Brazil
| | - Paolo Moroni
- Department of Veterinary Medicine and Animal Sciences-DIVAS, University of Milan, Lodi, Italy
- Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, Lodi, Italy
- Quality Milk Production Services, Animal Health Diagnostic Center, Cornell University, Ithaca, NY, United States
| | - Maria Filippa Addis
- Department of Veterinary Medicine and Animal Sciences-DIVAS, University of Milan, Lodi, Italy
- Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, Lodi, Italy
| | - Valerio Bronzo
- Department of Veterinary Medicine and Animal Sciences-DIVAS, University of Milan, Lodi, Italy
- Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, Lodi, Italy
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Duniere L, Frayssinet B, Achard C, Chevaux E, Plateau J. Conditioner application improves bedding quality and bacterial composition with potential beneficial impacts for dairy cow's health. Microbiol Spectr 2024; 12:e0426323. [PMID: 38376365 PMCID: PMC10994720 DOI: 10.1128/spectrum.04263-23] [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: 01/16/2024] [Accepted: 01/29/2024] [Indexed: 02/21/2024] Open
Abstract
Recycled manure solids (RMS) is used as bedding material in cow housing but can be at risk for pathogens development. Cows spend several hours per day lying down, contributing to the transfer of potential mastitis pathogens from the bedding to the udder. The effect of a bacterial conditioner (Manure Pro, MP) application was studied on RMS-bedding and milk qualities and on animal health. MP product was applied on bedding once a week for 3 months. Bedding and teat skin samples were collected from Control and MP groups at D01, D51, and D90 and analyzed through 16S rRNA amplicon sequencing. MP application modified bacterial profiles and diversity. Control bedding was significantly associated with potential mastitis pathogens, while no taxa of potential health risk were significantly detected in MP beddings. Functional prediction identified enrichment of metabolic pathways of agronomic interest in MP beddings. Significant associations with potential mastitis pathogens were mainly observed in Control teat skin samples. Finally, significantly better hygiene and lower Somatic Cell Counts in milk were observed for cows from MP group, while no group impact was observed on milk quality and microbiota. No dissemination of MP strains was observed from bedding to teats or milk. IMPORTANCE The use of Manure Pro (MP) conditioner improved recycled manure solids-bedding quality and this higher sanitary condition had further impacts on dairy cows' health with less potential mastitis pathogens significantly associated with bedding and teat skin samples of animals from MP group. The animals also presented an improved inflammation status, while milk quality was not modified. The use of MP conditioner on bedding may be of interest in controlling the risk of mastitis onset for dairy cows and further associated costs.
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Affiliation(s)
| | | | | | - Eric Chevaux
- Lallemand SAS, 19 rue des Briquetiers, Blagnac, France
| | - Julia Plateau
- Lallemand SAS, 19 rue des Briquetiers, Blagnac, France
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Simoni M, Mezzasalma N, Pitino R, Manuelian CL, Spadini C, Iannarelli M, Montanaro SL, Summer A, Cabassi CS, De Marchi M, Righi F. A short-term comparison of wheat straw and poplar wood chips used as litter in tiestalls on hygiene, milk, and behavior of lactating dairy cows. J Dairy Sci 2023; 106:9150-9163. [PMID: 37641355 DOI: 10.3168/jds.2022-22811] [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: 09/23/2022] [Accepted: 05/21/2023] [Indexed: 08/31/2023]
Abstract
A short-term study was conducted to compare the effect of using poplar wood chips (PWC) instead of wheat straw (WS) litter in dairy cows. A total of 38 lactating Holstein cows (204 ± 119 days in milk, 26.9 ± 6.5 kg of milk yield [MY]) were housed in a tiestall farm for a 10-d trial including 5 d of adaptation followed by 5 sampling days (from d 5 to 10). Cows were divided into 2 homogeneous groups: one group was bedded with WS, and the second with PWC. Both litter materials were provided in the amount of 7 kg/stall per d. Each group was composed of 3 subgroups of 6 or 7 cows; the subgroups were physically separated along the feeding line by wooden boards. During the sampling days, fecal composition, used litter composition, and bacterial count (Clostridium spp., Salmonella spp., Escherichia coli, Lactobacillus, and total bacterial count) were analyzed by subgroup twice a day. On d 1 and from d 5 to 10, udder hygiene score and cow cleanliness score were also evaluated individually twice a day. Meanwhile MY, milk hygiene (total bacterial count [TBC], coliform bacterial count [CBC], and spore-forming units [SFU]) and quality were measured and analyzed from 9 animals per group. Moreover, individual animal behavior (body position and behavioral traits) and subgroup dry matter intake were measured on d 9 and 10. Fecal dry matter did not differ between groups, PWC had the lowest used litter moisture and N content favoring the highest clean cow frequency, but also gave rise to the greatest used litter microbial contamination. The MY, milk quality, TBC, SFU, and CBC were similar. The lying behavior frequency was similar between groups. However, the PWC group showed the lowest sleeping frequency, the highest frequency of other behaviors (including discomfort signs), and the lowest dry matter intake. However, despite this apparent reduction in cow comfort, no biologically important differences were observed in this short-term study between cows on PWC and WS in milk production or hygiene.
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Affiliation(s)
- M Simoni
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy.
| | - N Mezzasalma
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy
| | - R Pitino
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy.
| | - C L Manuelian
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro (PD), Italy; Group of Ruminant Research (G2R), Department of Animal and Food Sciences, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
| | - C Spadini
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy
| | - M Iannarelli
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy
| | - S L Montanaro
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy
| | - A Summer
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy
| | - C S Cabassi
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy
| | - M De Marchi
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro (PD), Italy
| | - F Righi
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy
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Romanò A, Ivanovic I, Segessemann T, Vazquez Rojo L, Widmer J, Egger L, Dreier M, Sesso L, Vaccani M, Schuler M, Frei D, Frey J, Ahrens CH, Steiner A, Graber HU. Elucidation of the Bovine Intramammary Bacteriome and Resistome from healthy cows of Swiss dairy farms in the Canton Tessin. Front Microbiol 2023; 14:1183018. [PMID: 37583512 PMCID: PMC10425240 DOI: 10.3389/fmicb.2023.1183018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 06/26/2023] [Indexed: 08/17/2023] Open
Abstract
Healthy, untreated cows of nine dairy herds from the Swiss Canton Tessin were analyzed three times within one year to identify the most abundant species of the intramammary bacteriome. Aseptically collected milk samples were cultured and bacteria identified using MALDI-TOF. Of 256 cows analyzed, 96% were bacteriologically positive and 80% of the 1,024 quarters were positive for at least one bacterial species. 84.5% of the quarters were healthy with somatic cell counts (SCC) < 200,000 cells/mL, whereas 15.5% of the quarters showed a subclinical mastitis (SCC ≥ 200,000 cells/mL). We could assign 1,288 isolates to 104 different bacterial species including 23 predominant species. Non-aureus staphylococci and mammaliicocci (NASM) were most prevalent (14 different species; 73.5% quarters). Staphylococcus xylosus and Mammaliicoccus sciuri accounted for 74.7% of all NASM isolates. To describe the intramammary resistome, 350 isolates of the predominant species were selected and subjected to short-read whole genome sequencing (WGS) and phenotypic antibiotic resistance profiling. While complete genomes of eight type strains were available, the remaining 15 were de novo assembled with long reads as a resource for the community. The 23 complete genomes served for reference-based assembly of the Illumina WGS data. Both chromosomes and mobile genetic elements were examined for antibiotic resistance genes (ARGs) using in-house and online software tools. ARGs were then correlated with phenotypic antibiotic resistance data from minimum inhibitory concentration (MIC). Phenotypic and genomic antimicrobial resistance was isolate-specific. Resistance to clindamycin and oxacillin was most frequently observed (65 and 30%) in Staphylococcus xylosus but could not be linked to chromosomal or plasmid-borne ARGs. However, in several cases, the observed antimicrobial resistance could be explained by the presence of mobile genetic elements like tetK carried on small plasmids. This represents a possible mechanism of transfer between non-pathogenic bacteria and pathogens of the mammary gland within and between herds. The-to our knowledge-most extensive bacteriome reported and the first attempt to link it with the resistome promise to profoundly affect veterinary bacteriology in the future and are highly relevant in a One Health context, in particular for mastitis, the treatment of which still heavily relies on antibiotics.
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Affiliation(s)
- Alicia Romanò
- Food Microbial Systems, Group Microbiological Safety of Foods of Animal Origin, Agroscope, Bern, Switzerland
- Graduate School of Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Ivana Ivanovic
- Food Microbial Systems, Group Microbiological Safety of Foods of Animal Origin, Agroscope, Bern, Switzerland
| | - Tina Segessemann
- SIB, Swiss Institute of Bioinformatics, Zürich, Switzerland
- Method Development and Analytics, Group Molecular Ecology, Agroscope, Zürich, Switzerland
| | - Laura Vazquez Rojo
- Food Microbial Systems, Group Microbiological Safety of Foods of Animal Origin, Agroscope, Bern, Switzerland
| | - Jérôme Widmer
- Method Development and Analytics, Group Biochemistry of Milk, Agroscope, Bern, Switzerland
| | - Lotti Egger
- Method Development and Analytics, Group Biochemistry of Milk, Agroscope, Bern, Switzerland
| | - Matthias Dreier
- Food Microbial Systems, Group Cultures, Biodiversity, and Terroir, Agroscope, Bern, Switzerland
| | - Lorenzo Sesso
- Clinic of Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Michael Vaccani
- Clinic of Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Martin Schuler
- SIB, Swiss Institute of Bioinformatics, Zürich, Switzerland
- Method Development and Analytics, Group Molecular Ecology, Agroscope, Zürich, Switzerland
| | - Daniel Frei
- Method Development and Analytics, Group Molecular Diagnostics, Genomics, and Bioinformatics, Agroscope, Wädenswil, Switzerland
| | - Juerg Frey
- Method Development and Analytics, Group Molecular Diagnostics, Genomics, and Bioinformatics, Agroscope, Wädenswil, Switzerland
| | - Christian H. Ahrens
- SIB, Swiss Institute of Bioinformatics, Zürich, Switzerland
- Method Development and Analytics, Group Molecular Ecology, Agroscope, Zürich, Switzerland
| | - Adrian Steiner
- Clinic of Ruminants, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Hans Ulrich Graber
- Food Microbial Systems, Group Microbiological Safety of Foods of Animal Origin, Agroscope, Bern, Switzerland
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Kupczyński R, Bednarski M, Budny-Walczak A, Kociuba W. Evaluation of Suitability of New Bedding Material Obtained after Straw Biogasification for Dairy Cows. Animals (Basel) 2023; 13:1905. [PMID: 37370415 DOI: 10.3390/ani13121905] [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: 04/11/2023] [Revised: 05/30/2023] [Accepted: 06/03/2023] [Indexed: 06/29/2023] Open
Abstract
This study aimed to compare the biomass obtained via the biogasification of straw with the classic bedding material, wheat straw. It was divided into two stages. In the first stage, a laboratory evaluation of the bedding materials was carried out, taking into account dry matter, pH, and water absorption. In the laboratory tests, the bedding obtained after the biogasification of straw (Verbio) showed better sorptive properties, with a value of 439.86% (wheat straw's value was 294.10%), and its pH value was higher than that of wheat straw. In the second stage of the experiment, field tests were carried out on a production farm, wherein the bedding was evaluated for bedding hygiene, animal hygiene, insulation properties, animal productivity, and microbiological properties. A microbiological assessment was also performed. Regarding cleanliness and production parameters and thermographic insulation properties, the two types of bedding did not show statistically significant differences. In terms of microbiological parameters, a higher number of all examined types of bacteria and fungi was observed in the Verbio bedding compared with straw, but these differences were not statistically significant, except in the case of total coliform. The results indicate that straw obtained after gasification is a suitable bedding material, with parameters similar to those of wheat straw.
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Affiliation(s)
- Robert Kupczyński
- Department of Environment Hygiene and Animal Welfare, The Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, 38c Chelmonskiego St., 50-375 Wroclaw, Poland
| | - Michał Bednarski
- Department of Epizootiology and Clinic of Bird and Exotic Animals, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, 47 Grunwaldzki Sq., 50-366 Wroclaw, Poland
| | - Anna Budny-Walczak
- Department of Environment Hygiene and Animal Welfare, The Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, 38c Chelmonskiego St., 50-375 Wroclaw, Poland
| | - Wojciech Kociuba
- Department of Environment Hygiene and Animal Welfare, The Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, 38c Chelmonskiego St., 50-375 Wroclaw, Poland
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