Air quality plays a crucial role in maintaining the health of birds housed in indoor facilities. This study evaluated the impact of environmental and air quality parameters on the health of domestic canaries (Serinus canaria domesticus) in 102 Italian flocks, classified according to disease prevalence: healthy (H) and diseased (D), with D further divided into respiratory (RD) and gastrointestinal (GID) disorders. Environmental indicators included particulate matter (PM), carbon dioxide (CO2), formaldehyde (HCHO), total volatile organic compounds (TVOC), temperature (T°), relative humidity (RH) and bird stocking density (n/m3). These variables were analysed alongside clinical status, the presence of canary circovirus (CaCV) and polyomavirus (CaPyV), microbiological findings, and antimicrobial resistance patterns. Significantly higher PM and CO₂ concentrations were detected in RD flocks, supporting the role of poor air quality in respiratory disease onset. CaCV and CaPyV circulation were detected in 30.4% and 6.9% of flocks, respectively. Flocks positive for CaCV showed significantly higher CO₂ levels and bird stocking density, suggesting a link between inadequate environmental management and viral persistence. Microbiological analysis revealed widespread antimicrobial resistance: 60.8% of Gram-negative and 54.4% of Gram-positive isolates were multidrug resistant (MDR). Moreover, correlations between environmental parameters and resistance profiles were identified, though highly variable by microbial type and health status. Overall, these results emphasize that maintaining optimal air quality and environmental conditions is essential for preventing disease and limiting antimicrobial phenotypic resistance in canary breeding facilities.

Trace elements are persistent environmental contaminants that can bioaccumulate and biomagnify through food webs, making wildlife valuable sentinels of ecosystem health. This study provides the first characterization of trace element concentrations in whole blood from free-ranging Iberian lynxes (Lynx pardinus) and evaluates the biological and environmental factors influencing their variability, including comparisons with captive individuals. A total of 229 blood samples collected in Extremadura (southwestern Spain) between 2018 and 2024 were analyzed for Cr, Mn, Cu, Zn, As, Se, Cd, Hg, Fe, and Pb. Overall, concentrations were within the ranges reported for other mammalian species, and no clinical evidence of adverse health effects was detected during routine veterinary examinations. Significant correlations were identified among several elements, particularly between Zn and Fe, with moderate associations between Mn and Zn and between Fe and Cu, suggesting common environmental sources and interconnected physiological regulation. Trace element concentrations were significantly influenced by age, sex, geographical area, and sampling period, especially for As and Se, reflecting differences in bioaccumulation, metabolism, and environmental exposure. Principal component analysis revealed a largely shared multielement profile, with no clear separation among populations or biological groups, indicating relatively homogeneous exposure despite moderate spatial and individual variability. These findings provide the first reference values for trace elements in Iberian lynx whole blood, establishing a baseline for biomonitoring, ecotoxicological assessment, and conservation of this threatened felid.

Cystitis is a common condition in dogs and an important driver of antimicrobial prescription in small animal practice. Although international guidelines provide recommendations for diagnosis and management, their implementation in clinical settings remains variable. This survey-based study investigated the diagnostic and therapeutic approaches to canine cystitis among Italian veterinarians and explored differences between work settings. An anonymous online questionnaire was distributed nationwide between February and March 2024, yielding responses from 359 veterinarians. Of these, 63.2% worked in small clinics, 25.6% in large clinics, and 11.1% in veterinary hospitals. Diagnosis was most commonly based on the combination of symptoms, bloodwork, urinalysis, and abdominal ultrasound (45.1%) or on symptoms and urinalysis alone (43.7%). Urine culture and sensitivity testing (UCS) was performed in more than 50% of cases by 34.4% of small clinics, 55.4% of large clinics, and 72.5% of veterinary hospitals (p < 0.00001). Financial constraints, delayed results, and difficulty in urine collection were the main barriers. Overall, 56.2% of respondents included antibiotics as first-line therapy. Overall, antibiotic use did not differ among workplace categories, whereas fluoroquinolone prescription differed significantly (p = 0.021), being lower in veterinary hospitals than in small and large clinics. The most common treatment durations were 7 days (43.7%) and 10-14 days (43.2%). Management of subclinical bacteriuria was heterogeneous: probiotics (46.2%) and D-mannose (41.5%) were most frequently recommended, while 19.5% prescribed antibiotics and 19.8% opted for no therapy. These findings indicate variability in clinical practice, underuse of UCS, particularly in smaller clinics, and prescribing practices exceeding guideline recommendations.

Ivermectin (IVM), a widely used antiparasitic, raises emerging concerns regarding reproductive toxicity. This study investigated the effects of clinically relevant IVM concentrations (20, 40, 60 ng/mL) on endothelial cells from porcine corpus luteum, a translational model for vascular function. Proliferation and metabolic activity were assessed via BrdU ELISA and ATP bioluminescence assay, VEGF-A secretion by ELISA, redox status through superoxide and nitric oxide, FRAP assay, and SOD activity by colorimetric methods. IVM significantly impairs endothelial homeostasis by inhibiting proliferation (p < 0.05) and suppressing VEGF-A production at higher doses (p < 0.05), despite a compensatory increase in metabolic activity. IVM induced a biphasic nitric oxide effect (p < 0.01) and elevated superoxide levels (p < 0.05), causing oxidative DNA damage (p < 0.001) and upregulating antioxidant defenses (p < 0.05), while autophagosome load remained unchanged. These findings indicate potential risks to mammalian fertility through functional impairment of the corpus luteum microvasculature.

The present study aimed to detect microplastics in feline placentas and fetuses in the early stage of pregnancy. For this study, 8 pregnant queens were evaluated. A standardized protocol for the digestion of biological matter was used, as well as a plastic-free approach for sample collection and manipulation. Microplastics were investigated by means of Raman spectroscopy, with the aim of identifying their composition. Four of eight animals were contaminated, with a total of 19 microplastics detected in both fetal and placental samples. Specifically, fetuses from cats 4 and 7 were contaminated, as were the placentas from cats 5, 6, and 7. This work demonstrates that microplastics can accumulate in feline placentas even at the early stage of pregnancy. Moreover, preliminary results of the presence of microplastics in feline fetuses are shown, suggesting that microplastics can cross the placental barrier.

Feline lower urinary tract disease (FLUTD) is a frequent diagnosis in cats, with bacterial causes constituting a minor percentage of cases. This observational study aimed to assess the diagnostic and therapeutic approaches to FLUTD among Italian veterinarians and explore variations in different workplaces. Data were collected via an anonymous survey completed by 317 veterinarians from small clinics (SC), large clinics (LC), and veterinary hospitals (VH). Results revealed that approximately half of respondents relied on clinical signs and urinalysis for diagnosis, while fewer incorporated abdominal ultrasound. Urine culture and sensitivity (UCS) testing was infrequently performed, primarily due to financial and logistical constraints, with higher compliance in VH practitioners. Antimicrobials were widely employed, with enhanced penicillins being the most prescribed class. The frequent empirical use of quinolones raises concern regarding gaps in antimicrobial stewardship. Despite some adherence to the ISCAID guidelines, discrepancies in diagnostic rigor, antimicrobial selection, and treatment duration were observed. Larger facilities demonstrated greater alignment with evidence-based practices, emphasizing the need for widespread education on appropriate antimicrobial use. This study underscores the importance of integrating guideline-based diagnostics and stewardship in managing feline urinary tract diseases.

Pharmaceuticals are emerging environmental pollutants, with macrocyclic lactones like ivermectin raising concerns due to their widespread use and persistence. This study investigated ivermectin residues in intensive swine farms in Emilia-Romagna, Italy, focusing on treated sows' faeces and environmental samples. Two farms using ivermectin and a control farm without antiparasitic drugs were studied. Faecal, slurry, soil, and wastewater samples were collected at three treatment points: before, and 1 and 10 days post-treatment. Ivermectin was administered either orally or by injection and analysed via liquid chromatography-tandem mass spectrometry. Faecal residues varied significantly with administration route: orally treated sows had higher concentrations in faeces shortly after treatment (median = 930.25 µg kg-1) than injected sows (median = 14.84 µg kg-1). However, 10 days post-treatment, injected sows exhibited higher residue levels in faeces, indicating different excretion patterns. Soil samples fertilised with farm slurry contained ivermectin residues, sometimes exceeding ecotoxicological thresholds for non-target species like dung beetles and earthworms, with the highest concentration reaching 39.23 µg kg-1. No residues above detection limits were found in slurry or wastewater, likely due to ivermectin's hydrophobicity and dilution. The findings underscore the environmental risks of ivermectin use in swine farming and emphasise the need for sustainable drug management. Broader studies are necessary to refine residue distribution patterns and improve environmental guidelines, particularly for other livestock systems and soil types, to ensure ecological sustainability.

Antimicrobials are frequently administered for therapeutic and prophylactic purposes in companion animals. Their use is closely monitored as related to antimicrobial resistance both in human and veterinary medicine. This retrospective study aimed to describe antimicrobial prescription by different clinical services in cats visited at the Veterinary Teaching Hospital of the University of Parma (VTH-UP) between January 2021 and December 2023. The antibiotic classes were divided according to the categorization of antibiotics adopted by the European Medicines Agency (EMA); EMA categories A and B were classified as Critically Important Antimicrobials (CIAs). Overall, 43.8%, 35.0%, and 35.0% of visited cats received an antimicrobial prescription in 2021, 2022, and 2023, respectively. Most of the prescriptions were Category C "Caution" antibiotics (49.0%, 54.0%, and 55.0% in 2021, 2022, and 2023, respectively). Category B "restrict" antibiotics represented 13.0%, 12.0%, and 11.0% of the total antimicrobials prescribed in 2021, 2022, and 2023, respectively. Penicillins associated with beta-lactam inhibitors were the most common antibiotics prescribed each year at the VTH-UP (32.0%, 31.3%, and 23.7% of total prescriptions in 2021, 2022, and 2023, respectively). Among CIAs, quinolones were the most common, with 12.1%, 11.2%, and 10.1% of the total prescriptions in 2021, 2022, and 2023, respectively. Culture and sensitivity tests (CSTs) were performed for 18.1% (85/470), 17.4% (73/420), and 23.0% (96/417) of the total prescriptions in 2021, 2022, and 2023, respectively. Considering only CIA prescriptions, CSTs were performed in 70.0% (49/70), 66.7% (38/57), and 70.9% (39/55) of CSTs in 2021, 2022, and 2023, respectively. Antimicrobial use varies considerably depending on the clinical service. The use of "restrict" antibiotics was very limited, and attention should be given to therapeutic and prophylactic use.

Equine asthma, a prevalent chronic inflammatory condition affecting the equine population, significantly compromises the performance and quality of life in affected horses. Inhaled corticosteroids (ICS) are often the first-line pharmacological intervention due to their potent anti-inflammatory properties. This meta-analysis investigates the clinical efficacy of ICS in treating equine asthma, emphasizing the number needed to treat (NNT) and the likelihood of achieving a clinical response. A comprehensive literature search identified relevant studies comparing ICS with placebo (PCB) controlled treatments. Data were synthesized from four clinical trials involving 252 asthmatic horses. Results indicate an overall NNT of 3.2 (95 % CI 2.3-4.7), meaning that approximately three horses must be treated with ICS for one to achieve a significant clinical response. Additionally, the relative risk of achieving clinical improvement with ICS versus PCB was 1.73 (95 % CI 1.47-2.02), demonstrating a marked increase in therapeutic effectiveness. Subgroup analysis revealed an NNT of 3.0 for severe cases, underscoring the efficacy of ICS across different severity levels. Despite potential biases noted in some studies, sensitivity analyses confirmed the robustness of these findings. The GRADE assessment rated the quality of evidence as high. These results highlight the therapeutic value of ICS in managing equine asthma, providing evidence-based recommendations for their clinical use. Future research should explore long-term outcomes and potential synergistic effects of ICS combined with other treatments to enhance clinical efficacy in managing equine asthma.

Tetracyclines are a group of antibiotic substances largely administered through medicated feed to control diseases in food-producing animals. Fine dosing of antibiotics contained in medicated feed is crucial for the success of the treatment as well as minimising potential threats such as the spread of antimicrobial resistance and the transfer of antibiotic residues in food. A rapid analytical method based on HPLC with diode array detection (HPLC-DAD) was developed to quantify oxytetracycline, chlortetracycline and doxycycline in medicated feed. The reported method underwent in-house validation and was found to be suitable for the quantification of three target tetracyclines within the concentration range of 40-1000 mg kg-1 in official routine analysis. The method was applied to 103 official samples in the framework of the Italian National Plan on animal feed during the years 2021-2023 and nine non-compliant concentrations were identified in swine and fish feed samples.

Essential oils (EOs) and nature identical compounds (NICs) express different antimicrobial activity (AAc) which can be affected by variability in composition, stability over time, and the carrier employed for their inclusion in feedstuff and products for animal treatments. The aim of the present study was to evaluate the stability over time of the AAc of 8 EOs and 5 NICs, alone and in combination with Tween 20, on four major bacterial livestock pathogens (E. coli, S. Typhimurium, S. aureus and MRSA). For this purpose, minimal inhibitory concentration (MIC) and checkerboard assay (CkA) tests were performed on EOs and NICs at batch first use (T0 – only MIC), and after 12 (T1) and 24 (T2) months. Several EOs showed initial MICs lower than 2% (v/v) and, except for clove bud and cinnamon EOs, reduced their efficacy over time. The best NICs’ AAc was showed at T1 by cinnamic aldehyde (against MRSA), carvacrol (against E. coli), and thymol (except against MRSA), while at T2 the MIC values decreased for most of the NICs. The CkA between EOs and Tween 20 showed different interactions (Fractional Inhibitory Concentration -FIC- index from 0.06 to 32.04) based on bacteria and time. No interactions were found between NICs and Tween 20 (FIC index from 1.0 to 3.0). The AAc of EOs and NICs changes over time. Therefore, the preservation interval of these additives is critical for the AAc of feedstuff and products intended for livestock animals. Moreover, the NICs seem more suitable for the association with Tween 20.

Nanoplastics (NPs) affect fertility. We evaluated the effects of NPs treatment on luteal and endothelial cells. We examined crucial markers of growth and redox status. NPs treatment did not induce changes in ATP levels in luteal cells, while it increased (p< 0.05) their proliferation. In endothelial cells, no change in proliferation was detected, while an increase (p<0.05) in ATP levels was observed. The increase of reactive oxygen species, superoxide anion (p<0.05) and nitric oxide (p<0.001) was detected in both cell types, which also showed changes in superoxide dismutase enzyme activity as well as an increase of non-enzymatic antioxidant power (p<0.05). A decrease (p<0.05) in progesterone production as well as an increase of vascular endothelial growth factor A levels were detected (p<0.05). In addition, a dose-dependent accumulation of NPs in endothelial cells was shown, that likely occurred through adhesion and internalization. Results underline potential risk of NPs for corpus luteum functionality.

Ivermectin is a widely used broad-spectrum antiparasitic agent employed in both companion animals and livestock. While generally safe for mammals, its acute and chronic toxicity has been proven in many nontarget fish and insect species at low concentrations. The present study aimed to develop, validate, and test a more accurate method for ivermectin detection in various matrices (feces, soil, and sewage) for environmental studies. The method was validated using the Eurachem network. The applicability of the method was established at 1.5-500 mu g/L for feces and 1.5-15 mu g/L for sewage and soil. No dilution effect was observed at 5000 mu g/L. The limit of detection was 0.66, 0.54, and 0.36 mu g/kg for feces, soil, and sewage, respectively. The limit of quantification was set at 1.5 mu g/kg and verified experimentally. Overall recovery was 92.27 +/- 12.01% for feces and 96.19 +/- 13.78% in soil, reaching a linearity of at least 0.99. The present method was successfully applied to 228 feces, 20 sewage, and 105 soil samples. This validated method enables the precise detection and quantification of ivermectin in the tested matrices, thereby envisaging potential applications in environmental monitoring studies with improved sensitivity and specificity.

The Bardigiano horse is a traditional native Italian breed with a rich history and peculiar characteristics. Local breeds are proven to have unique genetic traits developed over generations to adapt to defined geographical regions and/or conditions. The specific microbial communities that coexist within these animals are unraveled by studying their microbiota, which permits a further step in the characterization of local heritage. This work aimed to characterize Bardigiano horse fecal microbiota composition. The data obtained were then compared with published data of a mix of athlete breeds to evaluate potential differences among local and specialized breeds. The study involved 11 Bardigiano mares between 3 and 4 years of age, from which stool was sampled for the study. Samples were processed for 16S rRNA sequencing. Data obtained were analyzed and plotted using R, RStudio, and FastTree software. The samples analyzed were similar to what literature has reported on horses of other breeds and attitudes at higher taxonomic levels (from phylum to genera). While at lower taxonomic levels, the difference was more marked highlighting specific families found in the Bardigiano breed only. Weight, province of origin, and breeding sites significantly affected microbiota composition (p-value ≤0.02, p-value ≤0.04, and p-value ≤0.05, respectively). The comparison with athlete breed showed a significant difference confirming that animal and environmental factors are crucial in determining fecal microbiota composition (p-value <0.001). Understanding the microbiota composition in local breeds like the Bardigiano horse is crucial for preserving biodiversity, managing animal health, and promoting sustainable farming practices.

Ivermectin is a macrocyclic lactone widely used in veterinary medicine for its broad-spectrum antiparasitic properties. It has been proven to be effective and safe. The purpose of this study was to develop a high-performance liquid chromatography method with a diode array detector for ivermectin screening in feed and water for animal consumption. Furthermore, the objective was to quantify ivermectin levels that were higher than 0.5 mg/kg in solid matrixes and 0.1 mg/kg in water. Doramectin was used as process standard. Samples were extracted using solid phase extraction with silica and C-18 columns. The method involved the use of high-performance liquid chromatography (HPLC) with a diode array detector (DAD). The results were interpreted using a calibration curve built with ivermectin standards at multiple concentrations (0.5, 1, 2, 5, and 12.5 mg/kg). Statistical evaluation of data was done using ANOVA. The data analysis showed that the linear regression was highly significant (P < 0.001), the intercept values were not significantly different from zero, and the correlation coefficient values (>0.999) indicated excellent linearity. Further tests demonstrated that this method is also useful when studying soil matrixes. The soil was dried and analyzed in the same way as feed; the same recoveries were realized on the spiked samples. The method is easy, inexpensive, precise, and repeatable; it requires very small amounts of sample.

Plastic is an important environmental issue and a more critical aspect concerns plastic fragments, mainly in term of nanoplastics (NPs). We demonstrated that NPs interfere with reproductive and adipose stromal cells. Since several research underlined an increased cardiovascular risk due to NPs, present study was undertaken to investigate their effect on aortic endothelial cells (AOC). We explored the specificity of their interaction with endothelial cells, quantifying their load in treated cells. Then, NPs effect was assessed on cell growth, generation of free radicals and antioxidant defence. Our data demonstrate that NPs colocalize with AOC. We found a significant (p < 0.01) increase both in metabolic activity and Vascular Endothelial Growth Factor (VEGF) production (p < 0.01). Redox status appeared to be disrupted (p < 0.05) by NPs. Taken together, the normal function of cultured AOC appeared negatively affected by AOC. Since NPs have been detected in blood, our present data appear of particular interest.

In the present study, we investigated a possible relationship between the immune response and the oxidative stress (OS) state trend in a group of 12 chickens after intraocular administration of an attenuated Mycoplasma gallisepticum (MG) vaccine. Blood samples were collected at the vaccination time (T0), after 14 (T1) and 21 d (T2). White blood cell count (WBC), differential leucocyte count, and anti-MG antibodies titer (S/P) were studied as immune response indexes. As plasmatic OS biomarkers levels, we considered malondialdehyde (MDA), nitric oxide (NO), superoxide dismutase (SOD), reactive oxygen metabolites derived compounds (d-ROMs), the ferric reducing ability of plasma (FRAP), and superoxide anion (O2-). After antigenic stimulation, it was observed a significant decrease in monocythemia and a significant increase in thrombocythemia, S/P, MDA, and SOD. Furthermore, subjects with high d-ROMs levels at T0 tended to develop higher cellular mobilization with increases in WBC and lymphocytes accompanied by lower antibody release. It was also observed that the antioxidant components FRAP and SOD were moderately positively correlated to the entity of antibody response.

Plastic is one of the main sources of marine and terrestrial pollution. This material can fragment into micro- (<-5 mm) and nanoplastics (NPs) (<100 nm) following degradation. Animals are exposed to these particles by ingesting contaminated food, respiration or filtration, and transdermally. In organisms, NPs can cross biological membranes, and cause oxidative stress, cell damage, apoptosis, and endocrine interference. We previously demonstrated that polystyrene - NPs interfered with ovarian cell functions. Since reproduction involves a high energy expenditure and a crucial role is played by adipose tissue, the aim of the present study was to evaluate the effects of NPs on primary adipose stromal cells (ASCs) isolated from swine adipose tissues. In particular, the effects on cell viability, proliferation, metabolic activity, inflammatory process mediators and oxidative stress markers were assessed. The obtained results did not reveal a significant variation in cell proliferation, metabolic activity was increased (P < 0.01) but only at the lowest concentration, while viability showed a significant decrease after prolonged exposure to NPs (P < 0.01). TNF-α was increased (P < 0.05), while PAI-1 was inhibited (P < 0.001). Redox status was significantly modified; in particular, the production of O2-, H2O2 and NO was stimulated (P < 0.05), the non-enzymatic antioxidant power was reduced (P < 0.05) while catalase activity was significantly (P < 0.01) increased.