Porphyromonas gulae and canine periodontal disease: Current understanding and future directions

Porphyromonas gulae has emerged as a notable pathogen in canine periodontal disease, akin to Porphyromonas gingivalis in human periodontitis. This review examines the initial isolation, phylogenetic analysis, habitat, host range, relationships with host health status and age, and key pathogenic determinants, including fimbriae, proteases, citrullinating enzyme, and lipopolysaccharide. Control strategies discussed include polyphosphate to disrupt haeme/iron utilization, clindamycin with interferon alpha to reduce bacterial load and enhance the immune response, and a protease inhibitor. Further research is needed to understand strain-level diversity of virulence factors and interactions between P. gulae and other oral bacteria, particularly Fusobacterium nucleatum, a common pathogen in both dogs and humans. The potential for interspecies transmission between dogs and humans warrants further research into these interactions. Extensive in vivo studies across various breeds are crucial to validate the effectiveness of proposed treatment strategies. This review emphasizes P. gulae's role in periodontal health and disease, setting the stage for future research and improved management of canine periodontal disease.

The secretomes of bovine mammary epithelial cell subpopulations differentially modulate macrophage function

Bovine mammosphere-derived epithelial cell (MDEC) cultures are heterogeneous and enriched for stem and progenitor cells. We previously reported that the bovine MDEC secretome, comprised of all bioactive factors secreted by the cells, displays regenerative properties, exerts antimicrobial effects, and modulates neutrophil activity, positioning it as a promising non-antibiotic biologic therapy for infectious diseases important to the dairy industry, like mastitis. Mastitis is defined as inflammation of the udder, and it is typically caused by bacterial infection. The effect of the MDEC secretome on macrophages, a first line of defense against bacterial infections in the udder, is unknown and could impact the utility of the secretome as a therapy for mastitis. To address this, we isolated bovine monocytes from peripheral blood and maintained them as an unpolarized (M0) population or polarized them into M1 or M2 phenotypes. Macrophages cultured with the secretome of bovine MDECs were assessed for their ability to phagocytose labeled bacterial particles and accumulate reactive oxygen species (ROS). We used single-cell RNA sequencing (scRNA-seq) and fluorescence-activated cell sorting (FACS) to isolate a subpopulation of MDECs that exert enhanced effects on macrophages. We found that the secretome of MDECs that do not express cluster of differentiation (CD) 73, a cell surface enzyme used as a marker for mesenchymal stromal cells, most strongly increased macrophage phagocytosis and ROS accumulation. These findings will help optimize the generation of the bovine MDEC secretome as a suitable treatment option for mastitis.

Improving traceability and quality control in the red-meat industry through computer vision-driven physical meat feature tracking

Current traceability systems rely heavily on external markers which can be altered or tampered with. We hypothesized that the unique intramuscular fat patterns in beef cuts could serve as natural physical identifiers for traceability, while simultaneously providing information about quality attributes. To test our hypothesis, we developed a comprehensive dataset of 38,528 high-resolution beef images from 602 steaks with annotations from human grading and ingredient analysis. Using this dataset, we developed a quality prediction module based on the EfficientNet model, achieving high accuracy in marbling score prediction (96.24% top-1±1, 99.57% top-1±2), breed identification (91.23%), and diet determination (90.90%). Additionally, we demonstrated that internal meat features can be used for traceability, attaining F-1 scores of 0.9942 in sample-to-sample tracing and 0.9479 in sample-to-database tracing. This approach significantly enhances fraud resistance and enables objective quality assessment in the red meat supply chain.

Dietary hazelnut skin prevents lipid oxidation in lamb enriched in omega-3 polyunsaturated fatty acids

The aim of this study was to investigate the effect of partially replacing maize with hazelnut skin and linseed, alone or in combination, on the oxidative stability of lamb. Forty lambs were randomly assigned to 4 treatments and fed: a conventional cereal-based diet (C), or the same diet with 15 % of hazelnut skin (HS), or 8 % of extruded linseed (LS), or 7.5 % of hazelnut skin plus 4 % of linseed (H + L) as partial replacement of maize. After 60 days of feeding trial, lambs were slaughtered, and hydrophilic antioxidant capacity and fat-soluble vitamins content were evaluated in fresh meat. Colour stability, lipid and protein oxidation were assessed during 7 days of refrigerated storage. Dietary combination of hazelnut skin and linseed increased the content of tocopherols (P < 0.001) and of n-3 polyunsaturated fatty acids (PUFA n-3; P < 0.001), while reducing lipid oxidation (TBARS value) during 7 days of storage (P < 0.001). Feeding lamb with hazelnut skin and/or linseed did not affect meat hydrophilic antioxidant capacity, colour stability, nor the formation of hydroperoxides, thiols, or carbonyls (P > 0.05). These results suggest that vitamin E provided by hazelnut skin contributed to delay lipid oxidation in meat, despite the higher concentration of n-3 PUFA.

Assessing the impact of acidifiers on growth performance, innate immune capacity, response to ammonia nitrogen stress, digestive enzyme activity, intestinal histology, and gene expression of Nile tilapia (Oreochromis niloticus)

This study investigated the effects of acidifiers (ACD) supplementation level on the growth, immune response, intestinal histology and gene expression of Nile tilapia (Oreochromis niloticus). The experimental diets included three different levels of ACD concentrations: 0 g/kg (CTRL) as the control, 1 g/kg (ACD1), and 2 g/kg (ACD2). These ACD were sprayed onto the diets and fish were fed to Nile tilapia (7.12 ± 0.47 g) for 56 days. The results indicated that increasing the dietary content of ACD significantly enhanced growth performance, as reflected in higher final body weight, specific growth rate, average daily gain, and feed efficiency. The ACD2 diet showed improved outcomes compared to the CTRL diet. Fish fed ACD diets showed significantly higher antioxidant enzyme activity compared to the CTRL diet and were able to maintain their antioxidant status throughout the experiment. The activity of digestive enzymes, including protease, amylase, and lipase, was significantly increased in fish fed diets supplemented with varying levels of 1 and 2 g/kg diet compared to the CTRL diet (P < 0.05). Additionally, significant increases were observed in the thickness of the intestinal muscularis and the width of the intestinal villi in fish fed ACD at concentrations of 1 and 2 g/kg of the diet, compared to the CTRL diet (P < 0.05). Moreover, dietary supplementation with ACD at concentrations of 2 g/kg of the diet significantly upregulated the expression of immune-related genes (P < 0.05). Overall, the use of ACD in fish diets has shown improvements in growth performance, immune responses, and intestinal histology, indicating their potential as a beneficial feed additive for Nile tilapia aquaculture. To the best of our knowledge, recent evaluations of dietary ACD supplementation in practical diets also highlight the influence of ACD supplementation as a feed additive, which could benefit the aquaculture industry.

Rumen fermentation profile and methane mitigation potential of mango and avocado byproducts as feed ingredients and supplements

Fruit byproducts represent a sustainable alternative to conventional feed for ruminants, addressing food-feed competition and environmental concerns, particularly through their potential to reduce enteric methane emissions via bioactive compounds. This study explored the use of mango and avocado byproducts as feed ingredients and supplements. In experiment 1, mango peel (MP), mango seed kernel (MSK), mango seed coat (MSC), avocado peel (AP), and avocado seed (AS) were independently tested to determine their chemical composition, in vitro digestibility, and rumen fermentation parameters, including gas production and methane emissions. In experiment 2, rumen fermentation parameters were evaluated across five treatment groups: The control group received 200 mg of alfalfa hay alone, without any supplementation. The remaining four groups each received 200 mg of alfalfa hay as the basal diet, supplemented with 15 mg of one of the following microencapsulated extracts: mango peel extract (MPE), avocado peel extract (APE), mango seed kernel extract (MSKE), or avocado seed extract (ASE). Both experiments were conducted over three runs, with each run including three replicates per treatment group, resulting in a total of nine replicates per group. Data were analyzed using linear mixed models with Bonferroni-adjusted pairwise comparisons (p < 0.05). MSK had the highest crude protein content, whereas AP had the highest ether content. MSC and AP presented the highest fiber fractions. AP and MP showed higher total phenolic content and antioxidant capacity. In experiment 1, AS, MP and MSK resulted in greater in vitro dry matter digestibility, and cumulative gas production compared to MSC and AP. Acetate to propionate ratios were higher in AS, MSC, and MSK. Methane production (ml/g dry matter incubated) was highest in MSK (43.7), while AP (19.8) and MSC (18.7) produced the lowest, representing almost 55% reduction compared to MSK (P < 0.001). MP (40.9) and AS (42.2) had intermediate methane values. Ammonia nitrogen was highest in AP and lowest in MSC. In experiment 2, MSKE, ASE and the control had the highest cumulative gas production, whereas APE reduced methane production by 16% compared to the control and lowered the acetate-to-propionate ratio. Compared with the control, all the encapsulated extracts lowered the ammonia nitrogen concentration. Overall, MP, MSK, and AS have emerged as the most promising ingredients because of their relatively high digestibility, and fermentation efficiency, whereas APE and MPE have potential as feed supplements for reducing in vitro methane production.

Evaluation of a new method of selective dry cow treatment using microbiological culture and antibiogram results

BACKGROUND

Due to financial issues and the rise in antimicrobial resistance, updating dry cow therapy (DCT) methods is still being researched by scientists worldwide. This investigation aimed to evaluate a new method of selective treatment by choosing an appropriate dry cow antimicrobial product for each cow based on the individual culture and antibiogram results and examining its effects on clinical and subclinical mastitis indices, cure rate, new infection rate, and milk yield during the first 30 days in milk (DIM).

MATERIALS AND METHODS

A total of 291 Holstein dairy cows were selected from three herds. These cows had a somatic cell count (SCC) > 200,000 (cells/mL) just before drying off, had positive composite milk culture results, and were gradually dried over five days. The milk samples were taken before drying off and on the day after calving (1 DIM) for microbial culture evaluation, as well as 3 days before drying off and between 3 and 7 days postpartum to evaluate SCC. The cows were randomly divided into two groups of control (n = 151) and treatment (n = 140). The control group included cows that were treated with dry cow antimicrobial products regardless of the pathogens involved in mammary infection, and the treatment group contained cows that received dry cow antimicrobial products based on the type of pathogen isolated during culture and the antibiogram results before drying off.

RESULTS

The results revealed that the cure rate in the treatment group was significantly better than that in the control group (P = 0.0006). In addition, the rate of new intramammary infections (IMI, P = 0.0006) and the rate of clinical mastitis (P = 0.015) decreased in the first 30 DIM in the treatment group. Nevertheless, the SCC and milk yield at the onset of subsequent lactation did not differ significantly between the control and treatment groups (P > 0.05).

CONCLUSION

According to the findings of our study, based on individual milk culture and antibiogram results, selectively treating cows with appropriate dry cow antimicrobial products had significant benefits for increasing the cure rate of pathogens, lowering the incidence of new IMIs, and minimizing the risk of clinical mastitis in the first 30 DIM.

Biocompatibility and healing patterns in experimentally induced canine tibial fractures using Pedicle screw-Rod external fixation

BACKGROUND

Biological osteosynthesis preserves blood supply and promotes rapid healing by aligning fracture fragments without direct surgical exposure. Pedicle screws are primarily designed for internal fixation in spinal procedures. A key objective of many orthopedic studies is to assess the biocompatibility of implants with bone and adjacent soft tissue. This study aims to evaluate the biocompatibility and effects of the Pedicle screw-Rod configuration as a novel external fixation method in canine tibial osteotomy.

METHODS

With ethics approval, eight healthy, intact male dogs, aged 10-12 months and weighing between 20 and 22 kg, underwent a minimally invasive medial tibial approach for surgical fixation of tibial osteotomy using a Pedicle screw-Rod configuration. Postoperative evaluations included ultrasound assessments at the osteotomy site and histological evaluations at the bone-screw interface.

RESULTS

B-mode ultrasound evaluation indicated healing progress at all osteotomy sites. The color Doppler examination revealed an initial increase in signals in the surrounding soft tissue during the first 4 weeks post-operation, followed by a decrease in signals within the adjacent soft tissue between the 5th and 8th weeks. During this latter period, the signals were primarily concentrated on the bone surface and the callus. The bone-screw interface at various screw sites exhibited similar histological changes, indicating effective integration of the newly formed woven bone into the screw threads.

CONCLUSIONS

Fixation of non-articular tibial osteotomy with Pedicle screw-Rod configuration resulted in secondary bone healing, characterized by abundant callus formation and neovascularization. This implant demonstrated favorable biocompatibility with bone and surrounding soft tissue, without significant complications.

Optimizing performance in young goats: impact of concentrate supplementation in Cicer arietinum straw-based diets on rumen fermentation, nutrient availability, blood profile and growth

The current study was conducted to optimize the growth performance of Indian goat breed (Barbari), with a focus on enhancing productivity for intensive commercial goat farming systems. The study explored the impact of varying concentrations of concentrate feed mix on the growth, nutrient utilization, rumen fermentation, and blood health of intensively raised young Barbari goats. Thirty-two male weaned kids, approximately 5 months old and weighing 9.43 ± 0.24 kg on average, were individually housed and divided into four equal groups. All kids received ad libitum Bengal gram straw and green fodder as basal rations, supplemented with barley grain at 0.7% of body weight in the control group (T1), and concentrate mix at 0.7%, 1.4%, and 2.1% of body weight in groups T2, T3 and T4, respectively. Significantly faster weight gain was observed in finisher kids receiving higher concentrations of concentrate feed mix (P < 0.001). DM intake (g/kg W0.75) increased (P < 0.05) in T4 compared to T1. CP intake (g/kg W0.75) was higher in T3, and T4 than in T1, and T2. Elevated levels of TCA-precipitable nitrogen, total VFA production, and a favorable shift in the acetate/propionate ratio were observed in kids under T4 compared to T1. Total digestible nutrients (TDN) percentage in the feed was enhanced in T4 (P < 0.01), and digestible crude protein (DCP) percentage was greater in T4, and T3 compared to T1 (P < 0.05). Finisher goats under T4 retained higher (P < 0.05) amount of nitrogen/kg W0.75 compared to T1 and T2. Furthermore, red blood cell counts (RBC) increased in T3, and T4 compared to T1 (P < 0.05), while white blood cell counts (WBC) were enhanced in concentrate mixture added treatments (T2, T3 and T4) compared to T1 (P < 0.05). Haemoglobin concentration was significantly higher in T3, and T4 compared to T1, and T2 (P < 0.05). Blood glucose levels were elevated in groups receiving concentrate mix (T2, T3, T4) compared to T1; and the albumin to globulin (A/G) ratio tended to decrease due to increased globulin levels in blood plasma (P < 0.05). In conclusion, Barbari finisher goats raised with 2.1% of their body weight as concentrate mix supplementation under an intensive feeding system experienced improved growth, nutrient utilization and blood profile. Barbari goats, known for their high reproductive efficiency and adaptability to semi-arid climates, are ideal for meat production. Their farming offers great potential for small-scale farmers and entrepreneurs, especially when utilizing abundantly available pulse straw-based diets supplemented with such concentrate level.

Antimicrobial use in pig herds in Ireland: analysis of a national database (2019-2023)

BACKGROUND

Antimicrobial resistance (AMR) in human and animal pathogens remains a global One-Health threat. The associations between antimicrobial use (AMU) and the evolution and dissemination of AMR bacteria, and their resistance genes, highlight the importance of monitoring and regulating AMU. Here, we present an analysis of national monitoring data of AMU in pig facilities in Ireland from 2019 to 2023 via the recently established National AMU Database. AMU was measured using two metrics (mg per corrected population units (mg/PCU) and defined daily dose (DDDvet/PCU)). Temporal trend models were fit using regression models with population average effects given there were multiple observations per herd, while controlling for herd type and size.

RESULTS

Linear spline models revealed no significant change in overall usage from Q1-2019 until mid-2020, followed by a significant decrease in usage until mid-2022. There was evidence of increases in usage from mid-2022 until the end of the time series; the exact timing of the changes in trends varied by the AMU metric. A multinomial logit regression model suggested that there was a significantly decreased probability of premix use relative to oral administration from Q3-2021 through Q4-2023 (OR: 0.70 - 0.58; P < 0.03). The predicted probability that a high priority critically important antimicrobial (HPCIA) was used in a herd during a year-quarter declined by an average of 9% per quarter (OR: 0.91; 95% CI: 0.90-0.92; p < 0.001) over the study period. The mean decline in use of cephalosporin (3rd /4th generation), fluoroquinolone and macrolide (a former HPCIA) per quarter were estimated to be -12% (95% CI: -8- -15%), -9% (95% CI: -8- -10%) and - 4% (95% CI: -2- -4%), respectively.

CONCLUSIONS

This exploration of AMU in pigs in Ireland revealed significant changes in overall usage, with both decreases and increases. There were declines in usage of HPCIA agents. Additionally, there was evidence of a significant decline in the use of oral premixes, coinciding with policy change. Further monitoring of AMU is essential to understand how the pig farming sector is responding to policy changes (e.g., increasing AMU in response to zinc oxide bans).

The impact of extracellular matrix proteins on bovine fibro-adipogenic progenitor cell adhesion, proliferation, and differentiation in vitro

Fibro-adipogenic progenitor cells (FAPs) are mesenchymal stem cells that produce extracellular matrix (ECM) and intramuscular adipocytes in skeletal muscle. While FAPs have demonstrated responsiveness to their physical environment, there is limited knowledge of how the ECM substrate of FAPs impacts their differentiation, particularly in livestock animals. We hypothesized that the ECM substrate FAPs are cultured on will differentially impact their adherence, proliferation, and differentiation. Through an initial screen of 9 ECM proteins and their combinations, significant variation of bovine FAP attachment and differentiation across coatings was observed. The ECM substrates fibronectin, collagen 6, vitronectin, and a combination of fibronectin and collagen 6 were selected for further testing. Notably, fibronectin increased cell proliferation and attachment rates, without impairing FAP adipogenic or fibrogenic differentiation compared to the other coatings. Benefits of fibronectin were maintained at lower concentrations and when combined with less favorable coatings such as collagen 6. When assessed for their adipogenic potential on each coating at different substrate stiffnesses, lipid accumulation decreased with increasing substrate stiffness, while cell attachment increased on stiffer substrates. Overall, these results demonstrate the high responsiveness of FAPs to their ECM substrate, along with highlighting fibronectin as a preferred substrate for in vitro experiments with bovine FAPs.

Classification of Post-Delousing Mortality in Farmed Atlantic Salmon: A Case Study of Standardised Causal Classification at Fish-Level

The study investigated cause-specific, fish-level mortality of farmed Atlantic salmon following mechanical delousing. We visited three populations at two marine sites belonging to one company at four different time points, from 1 day before to 13 days after the mechanical delousing. A total of 453 dead fish were collected and necropsied during the four visits. The underlying mortality cause was determined by macroscopic pathology in fish that died peracutely, acutely and subacutely after the procedure. The macroscopic pathological changes were recorded, and a cause of death was assigned to each fish by applying a uniform code system to classify mortality and losses in farmed Atlantic salmon. The findings revealed that mechanical delousing procedures can lead to mortality and pathological changes up to 13 days after the procedure. We identified cerebral haemorrhages in approximately 25% of the necropsied fish that died peracutely. Comparing the cause-specific mortality assignments at necropsy to daily mortality recordings by farmers showed that farmers assigned a smaller proportion of the fish to injury/trauma than the necropsy indicated. This implies that current practices for recording mortality causes by farmers after delousing may overlook the long-term negative effects of the procedure. Therefore, guidelines for farmers to more accurately record mortality causes following delousing are necessary to improve the value and precision of these records.

Prevalence and associated risk factors of bovine Schistosoma and Fasciola infections among cattle in South Achefer District, North West Ethiopia

Bovine schistosomiasis and fasciolosis, caused by flatworms from different species of Schistosoma and Fasciola, continue to be significant animal health concerns in cattle farming in developing countries like Ethiopia. However, not enough epidemiological information is available in most parts of Ethiopia in this respect. Therefore, the present study aimed to determine the magnitude of these two important zoonotic diseases and the associated risk factors in south Achefer district, northwest Ethiopia. A cross-sectional study was carried out in June and August of 2020. The research cattle, which belonged to farmers in three selected localities, were chosen by a simple random sampling method. Freshly collected faecal samples were subjected to a parasitological test using the sedimentation technique to identify eggs of Schistosoma and Fasciola. We used Pearson's chi-square (χ2) test to ascertain the degree of variation between the proportions of disease occurrence. Logistic regression analyses were performed for the risk factor analysis. The overall prevalence of Schistosoma bovis and Fasciola hepatica was 9.6 % (37/384) and 54.2 % (208/384), respectively. Cross-bred cattle had around twice the odds of contracting Fasciola hepatica than local cattle (adjusted odds ratio, AOR: 1.87, 95 % CI: 1.02-3.43). The prevalence of Fasciola hepatica was more than seven times higher in younger cattle than in older cattle (AOR: 7.31, 95 % CI: 3.54-15.08). Comparatively to cattle in good physical health, those in poor physical condition were shown to contract Fasciola hepatica more than four times (AOR: 4.85, 95 % CI: 1.94-12.14). This study indicated that bovine Schistosoma and Fasciola infections remain among the major cattle health problems in the study area. Therefore, appropriate intervention methods should be implemented for effective zoonotic disease control in the study area.

Serum reactivity analysis with inactivated GVII-matched vaccine-Payavax G79®: Comparison of B-cell epitopes in NDV-vaccine strains

The Newcastle Disease Virus (NDV) sub-genotype VII.1.1 is the most common NDV circulating in Iranian poultry farms. It differs genetically and antigenically from the conventional vaccine strains of genotypes I and II. The inactivated vaccines efficiency can be affected by the grade of similarity with circulating viruses. Here, we updated the NDV vaccine using a local circulating virus seed, introduced Payavax G79® as the inactivated bivalent vaccine, and compared the results with serological and phylogenetic characteristics derived from it to different NDV genotype virus vaccines. According to our results, after 25 days post-vaccination, the antibody titer elicited against sub-genotype VII.1.1 was 8.4 log2. In contrast, the antibody titer against apathogenic genotype I (NDV-V4) and lentogenic genotype II (LaSota) was 4.4 log2 and 4 log2, respectively. Comparing in silico studies of the F protein's discontinued B-cell epitopes, it was found that NDV-GVII, LaSota, and NDV-V4 virus all have seven, four, and eight discontinued B-cell epitopes on the protein's surface. Furthermore, the HN protein surface of NDV-GVII, LaSota, and NDV-V4 virus has four, six, and three discontinued B-cell epitopes, respectively. In summary, the low similarity between NDV genotypes I, II, and the predominant circulating genotype VII (approximately 83-84 %) indicates the need for an updated vaccine seed strain.

Recycling Agricultural Waste: Sustainable Solutions for Enhancing Livestock Nutrition

The increasing demand for sustainable agricultural practices prompts a reevaluation of feeding strategies in ruminant nutrition. Agricultural waste, often viewed as a by-product (BP), presents a promising opportunity to enhance the sustainability of livestock production systems. This review explores the potential of incorporating various agricultural BPs into ruminant diets. Utilizing these BPs reduces the environmental impact of livestock farming and contributes to the circular economy by recycling nutrients back into the food system. The nutritional composition of these wastes varies widely, and their inclusion in ruminant diets improves feed efficiency, animal performance and overall health. Research indicates that specific treatments, such as fermentation and ensiling, enhance the digestibility and nutrient availability of these materials. Moreover, incorporating agricultural waste into ruminant nutrition leads to financial benefits for farmers by reducing reliance on conventional feed sources. However, key challenges remain, particularly the need for further research to optimize inclusion rates and address potential anti-nutritional factors found in some agricultural wastes. Notably, adding these materials to ruminant diets results in 10%-30% reductions in feed costs and improvements of 5%-20% in key performance metrics, such as weight gain and milk production. These findings highlight the economic and sustainability benefits of utilizing agricultural BPs in livestock feeding practices. This review emphasizes the necessity of developing innovative and sustainable feeding strategies that leverage agricultural waste, calling for interdisciplinary approaches that combine animal nutrition, agronomy and environmental science. By adopting these practices, the livestock sector contributes to food security while minimizing its ecological footprint. Future research focuses on innovative processing techniques, effective management of anti-nutritional factors, and assessing long-term impacts on animal health and productivity. Additionally, examining the nutritional and health aspects of commonly used BPs, such as pomegranate, grape, pistachio, saffron, raisin, olive and tomato, is essential for fully understanding their potential in ruminant nutrition and guiding the development of targeted feeding strategies.

Analytical advances in horseracing medication and doping control from 2018 to 2023

The analytical approaches taken by laboratories to implement robust and efficient regulation of horseracing medication and doping control are complex and constantly evolving. Each laboratory's approach will be dictated by differences in regulatory, economic and scientific drivers specific to their local environment. However, in general, laboratories will all be undertaking developments and improvements to their screening strategies in order to meet new and emerging threats as well as provide improved service to their customers. In this paper, the published analytical advances in horseracing medication and doping control since the 22nd International Conference of Racing Analysts and Veterinarians will be reviewed. Due to the unprecedented impact of COVID-19 on the worldwide economy, the normal 2-year period of this review was extended to over 5 years. As such, there was considerable ground to cover, resulting in an increase in the number of relevant publications included from 107 to 307. Major trends in publications will be summarised and possible future directions highlighted. This will cover developments in the detection of 'small' and 'large' molecule drugs, sample preparation procedures and the use of alternative matrices, instrumental advances/applications, drug metabolism and pharmacokinetics, the detection and prevalence of 'endogenous' compounds and biomarker and OMICs approaches. Particular emphasis will be given to research into the potential threat of gene doping, which is a significant area of new and continued research for many laboratories. Furthermore, developments in analytical instrumentation relevant to equine medication and doping control will be discussed.

Effect of a Collar and Harness on Intraocular Pressure and Respiration Rate of Brachycephalic and Dolichocephalic Dogs

BACKGROUND

Dogs are a popular pet in many countries, and for them to gain appropriate exercise, many owners opt to walk them on a leash. Despite health and welfare concerns, brachycephalic breeds remain common as pets, with limited research existing that investigates the best restraint type for these animals.

OBJECTIVES

This study aimed to test the effect of a collar and harness during stationary and exercise conditions on the intra-ocular pressure (IOP) and respiration rate (RR) of brachycephalic and dolichocephalic dogs.

METHODS

A total of 24 healthy dogs, both brachycephalic and dolichocephalic, were recruited for the study and underwent stationary and exercise conditions in two restraint types in a within-between-subjects design. IOP was measured by rebound tonometry, and RR was measured using clinical and visual methods by the same experimenter.

RESULTS

Just wearing a collar in a stationary condition increased IOP in brachycephalic dogs (p < 0.05) but not in dolichocephalic dogs (p > 0.05). Exercising in a collar increased IOP for both groups of dogs (p < 0.05), whereas exercising in a harness did not affect IOP for either group (p > 0.05). RR increased in exercise conditions for both restraint types in brachycephalic dogs (p < 0.05), with no difference between collar and harness (p > 0.05).

CONCLUSIONS

Data suggest that collars may elevate IOP during exercise for all dogs and also during stationary conditions for brachycephalic breeds. Owners need to be conscious of the most appropriate restraint for their dog to avoid deleterious effects on IOP and RR.

Diagnostic performance of the Enferplex bovine tuberculosis antibody test using bulk tank milk samples from dairy cattle

Bovine tuberculosis, caused mainly by Mycobacterium bovis, is a major disease of cattle worldwide associated with significant economic losses and is usually diagnosed using periodic tuberculin skin tests, IFNγ release assay, or at postmortem. Recently, we developed a multiplex test for detecting antibodies to Mycobacterium bovis in cattle that has high sensitivity and specificity using serum or individual milk samples. Here, we assessed the performance of the test using bulk tank milk samples from skin test-positive and bovine tuberculosis-free cattle herds. In nonanamnestic bulk tank milk samples, the sensitivity relative to the comparative cervical skin test was 77.2% and the specificity was 99.8% using the high sensitivity setting of the antibody test. A kappa value of 0.85 was found, indicating almost perfect agreement between the test results and comparative cervical skin test status of the herds. Likelihood ratio analysis gave a positive likelihood ratio of 53.1 and a negative likelihood ratio of 0.030, indicating that the test provides good diagnostic evidence of the infection being either present or absent, respectively. Bulk tank milk samples from herds with inconclusive reactors to the comparative cervical skin test but had no reactors gave a test positivity of 73.7%, indicating that antibody-positive animals were present in the herd after removal of the reactors. Variances in herd prevalence did not result in statistically significant differences in test positivity, and the test was able to detect a herd prevalence of 0.1% of comparative cervical skin test reactors in 80% of low prevalence herds. The test showed good repeatability and reproducibility, giving complete concordance in results from 3 independent laboratories. The results show that the bulk milk antibody test could be used as a nonanamnestic surveillance tool for detecting and monitoring bovine tuberculosis in dairy cattle herds.

Pain Management for Gastrointestinal Conditions in Exotic Animals

Gastrointestinal (GI) disorders are very common in exotic animals, such as reptiles, birds, mammals, and can be extremely painful. This review aims to provide the reader with a better understanding of the different pain mechanisms and manifestations across orders and species in order to provide the most updated information on pain recognition and management for GI conditions in exotic animals.

Genomic and Computational Analysis Unveils Bacteriocin Based Therapeutics against Clinical Mastitis Pathogens in Dairy Cows

Clinical mastitis (CM) remains a critical challenge in dairy production, exacerbated by the global rise of antibiotic-resistant pathogens, which threatens herd health and productivity. This study pioneers a dual genomic-computational strategy to develop bacteriocin-based therapeutics-a promising alternative to conventional antibiotics-by targeting conserved virulence mechanisms in CM-causing pathogens. We aimed to (i) identify essential core proteins in CM-causing pathogens of dairy cows using the genomic approach; and (ii) assess the efficacy of bacteriocin peptides (BPs) as novel therapeutic agents targeting the selected core proteins for sustainable management of mastitis. Through pan-genomic analysis of 16 clinically relevant pathogens, including Staphylococcus aureus, S. warneri, Streptococcus agalactiae, S. uberis, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, P. putida, and P. asiatica, we identified 65 evolutionarily conserved core proteins. Prioritization based on essentiality, virulence, and resistance potential revealed Rho (transcription termination factor) and HupB (nucleoid-associated protein) as high-value therapeutic targets due to their critical roles in bacterial survival and pathogenicity. A computational screen of 70 BPs identified 14 candidates with high binding affinity for both Rho and HupB proteins. Molecular dynamics simulations demonstrated that BP8, a novel dual-action bacteriocin, competitively inhibits Rho-mediated transcription termination and disrupts HupB-DNA interactions, effectively crippling bacterial replication and virulence. BP8 exhibited superior structural stability and binding efficacy compared to other candidates, positioning it as a potent broad-spectrum agent against diverse CM pathogens, including multidrug-resistant strains. Our study underscores the untapped potential of bacteriocins in veterinary medicine, offering a sustainable solution to mitigate antibiotic overuse and resistance. The computational validation of BP8 provides a foundational framework for developing targeted therapies, with implications for reducing dairy industry losses and improving animal welfare. Further in vitro and in vivo studies are warranted to translate these insights into practical therapeutics.

Nutritional potential of dehydrated Sphenarium rugosum powder: An insight into fatty acids and minerals

The nutritional and techno-functional potential of Sphenarium rugosum powder was assessed through advanced characterisation techniques (FT-IR, XRD, DSC-TGA). The powder exhibited high protein (68.51 %) and fat (11 %) content, with a favourable ω-3 to ω-6 fatty acid ratio (1.44:1 w/w). Its mineral composition, including potassium, calcium, sodium, and magnesium, enhances its nutritional profile. FT-IR deconvolution revealed insights into the secondary structure of proteins, distinguishing it from other insect-derived powders. Functionally, Sphenarium rugosum powder demonstrated 53.83 % solubility, excellent water retention capacity (2.67 g H2O/g DW), and significant foaming capacity at pH 10, suggesting suitability for food applications. Targeted protein analysis identified essential amino acids such as leucine, lysine, and methionine. These findings highlight Sphenarium rugosum powder as a promising ingredient for enhancing protein content or serving as a protein substitute in food formulations, with the potential for innovative applications in the development of functional foods.

Impact of Periodontal Disease on the Oral Microbiome of Cats

Periodontal disease is a multifactorial condition commonly observed in domestic cats, characterized by inflammation and alveolar bone loss. This study aimed to elucidate the differences in the oral microbiome between healthy cats and those with periodontitis, focusing on microbial community structure and preliminary functionality. An observational case-control study was conducted involving 30 cats, divided equally into healthy and periodontitis groups. Gingival swabs were collected and analyzed using V3_V4 regions of the 16S rRNA sequencing. The results revealed that while the dominant phyla in both groups were Bacteroidota and Bacillota, cats with periodontitis exhibited decreased levels of Ochrobactrum, Odoribacter denticanis, Treponema denticola, Porphyromonas macacae, and Fretibacterium fastidiosum which are the characteristics of the periodontal oral microbiome. Predicted function indicated the enrichment of pathways related to the biosynthesis of fatty acids in periodontal disease, such as ubiquinol and mycolate production. These findings highlight significant microbial and functional shifts associated with feline periodontal disease, providing a basis for potential diagnostic and therapeutic strategies.

Antimicrobial potential of a novel K5-specific phage and its recombinant strains against Klebsiella pneumoniae in milk

The nutrient-rich composition of milk creates an optimal environment for bacterial proliferation, making the inhibition of microbial growth essential for maintaining dairy product quality and ensuring consumer safety. Klebsiella pneumoniae is an important contaminant of milk and a leading cause of bovine mastitis. Although the increasingly serious antibiotic resistance has led to a renewed interest in phage therapy, research on antimicrobial potential of Klebsiella phages in milk remains scarce. The K5 serotype of K. pneumoniae is a major concern due to its high virulence and prevalence in dairy farming operations. Despite its clinical and economic importance, the availability of phages specifically targeting this serotype remains substantially limited. Here, we successfully isolated and sequenced 2 K1-specific Klebsiella phages, P284 and P287, and one K5-specific Klebsiella phage P252. We identified the receptor-binding proteins with depolymerization activity in these phages. The phage library against K5 K. pneumoniae was enriched by phage genome modification. Specifically, we replaced the receptor-binding protein of K1-specific phage P284 with that of K5-specific phage P252, resulting in the generation of recombinant phages T and F, which exhibit specific lytic activity against K5 K. pneumoniae. Compared with phage P252, recombinant phages T and F exhibited better and more prolonged antibacterial potential in planktonic assay. In addition, all these K5-specific phages could significantly inhibit bacterial growth and reduce bacterial populations in milk at 4°C and 38°C. In summary, this study provided K5-specific phages with potential application in managing K. pneumoniae contamination and infection in the dairy industry.

Optimizing embryo growth and broiler chick performance under thermal stress: The role of thyme and peppermint extracts in enhancing health and survival

This study investigated the effects of thyme and peppermint extract sprays on eggs, emphasizing their antioxidant properties and impact on poultry embryo growth. Key evaluated traits included embryonic quality, hatchling metrics, yolk sac residue, intestinal morphology, and broiler performance during the first week, alongside blood stress indicators. A 5 × 2 factorial experiment was conducted on 1500 eggs treated with ascorbic acid, peppermint extract, thyme extract, distilled water, or no spray, under both normal and heat stress conditions. The results revealed that thyme and peppermint sprays significantly increased egg weight and reduced water loss. Peppermint extract increased yolk sac weight on day 18 (P < 0.05), while thyme extract decreased embryonic mortality under normal temperatures. However, peppermint extract and ascorbic acid negatively affected mortality and incubation time, respectively (P < 0.05). Thyme extract reduced the yolk sac-to-chick weight ratio in hatched chicks under normal conditions. Under heat stress, untreated chicks had higher body surface temperatures compared to those treated with ascorbic acid (P < 0.05). Thyme extract reduced cortisol levels and white blood cell counts under heat stress compared to peppermint extract (P < 0.05). Thyme extract also improved intestinal morphology in heat-stressed chicks, increasing villus height and the villus-to-crypt depth ratio. Peppermint under heat stress and ascorbic acid under normal conditions increased crypt depth, while ascorbic acid under heat stress improved villus width. Thyme extract additionally increased goblet cell numbers compared to distilled water (P < 0.05). Forty-eight hours post-hatch, heat stress elevated chicks' body temperatures, while thyme extract sprays significantly reduced them (P < 0.05). Chicks sprayed with distilled water under heat stress showed the highest weight gain. In conclusion, thyme extract spray is an effective intervention for improving hatchability, yolk sac absorption, intestinal morphology, and reducing cortisol levels under heat stress, offering practical applications for enhancing poultry production efficiency and health.

Comparative global epidemiology and species distribution of Sarcocystis spp. in new and old world camelids: A systematic review and meta-analysis

This study aimed to investigate the global prevalence, species diversity, and geographical distribution of Sarcocystis spp. in Old World Camelids (OWCs) and New World Camelids (NWCs). A comprehensive literature search was conducted across multiple databases, covering studies up to December 22, 2024. The analysis included 36 studies (28 on OWCs and 8 on NWCs), comprising data from 5942 camelids (4850 OWCs and 1092 NWCs) across 13 countries in three continents. A random-effects model was used to estimate pooled prevalence rates, and heterogeneity was assessed using the I² statistic. The overall prevalence of Sarcocystis spp. in camelids was 57.7 % (95 % CI: 49.4-65.6 %). NWCs exhibited a significantly higher pooled prevalence (77.6 %, 95 % CI: 55-90.8 %) compared to OWCs (55.1 %, 95 % CI: 46.4-63.6 %). The highest regional pooled prevalence was observed in South America (82.3 %), particularly in the WHO AMR region (82.3 %), with Peru reporting the highest pooled prevalence at 99.3 %. The oesophagus was the most frequently infected tissue. Four valid Sarcocystis species were identified in camelids: S. cameli and S. ippeni in OWCs, and S. aucheniae and S. masoni in NWCs. Many positive samples were classified only as Sarcocystis spp. Although none of these species poses a zoonotic risk, some like S. cameli and S. aucheniae are particularly significant due to their economic and veterinary impact on camelids. Their ability to form macroscopic cysts can negatively affect meat quality, leading to considerable economic losses in the camel industry. Targeted surveillance and control measures are recommended, particularly in high-prevalence regions.

Rapid detection of Ornithobacterium rhinotracheale infection by a latex agglutination test in turkeys

Ornithobacterium rhinotracheale (ORT) is a gram-negative pathogen recognized as one of the causative agents of respiratory diseases in chickens and turkeys. This study aimed to design and evaluate the diagnostic validity of the latex agglutination test for ORT detection. A Western blot test was conducted to assess the various serotypes present in the bacterial isolates, as well as the immunogenicity of their lipopolysaccharide. Following the design and optimization of the ELISA and latex agglutination tests using prepared mixed cell membrane antigens from the different isolates, a serological evaluation of the infection was performed on a total of 244 turkey serum samples, both with and without respiratory symptoms. The protein profiles of the isolated ORT samples revealed equal expression of proteins with molecular weights of 75 kDa and 100 kDa. The collected sera exhibited common antibodies that reacted with antigens weighing 48 kDa, 75 kDa and 100 kDa in Western blot analysis. The sensitivity, specificity and similarity of the latex agglutination test, in comparison to ELISA, were 87.94, 90.29 and 88.93 %, respectively. The developed latex agglutination test resulted in a positive reaction at the presence of a minimum antibody concentration equal to 308.63 μg/mL. The results indicate that the latex agglutination test is effective for the rapid diagnosis and control of Ornithobacterium infection in turkeys.

Production system, and egg quality of village chicken reared under traditional management system in Angecha and Damboya districts of Kembata Tembaro Zone, Southern Ethiopia

The study was conducted in two selected districts of Kembata Tembaro Zone, Southern Ethiopia with objectives of to assess the production system, and egg quality of village chicken reared under traditional management system. Multi-stage sampling technique was used to select representative samples and one hundred eight six respondents (186) were interviewed with structured questionnaire. The data were organized and analyzed by using SPSS and SAS. The mean of Eggs per clutch per hen, Age at first lay, and number of clutches per hen/year were 15.82±0.54, 7.08±0.25, 5.26±0.25 and Age of sexual Maturity (Male=7.67±0.306 and female=8.13±0.301), respectively. The predominant breed is exotic (59.6%) with a village chicken production system. 50.55% of the respondents kept chicken in Perch at one corner of the common house, and 45.70% practiced isolation of sick birds from health to prevent disease transmission. The mean of eggs incubated, hatched, and hatchability percentages were (14.5±0.55, 12.5±0.57 and 80.5), respectively. The study revealed that 40.32, 26.2 and 17.32% of respondents rear chicken for sale, home consumption, and non-defined purpose, respectively. The highest percentage of the interviewed respondent's use of eggs was for selling purposes 30.1% (Mid and 31.7% (Highland). Regarding egg storage conditions in high land and mid land agroecology about 21.5% and 18.3% of the respondents store their eggs inside cold containers, respectively. The major constraints of chicken production in the study areas were the prevalence of disease, high chick mortality, predator attack (Shululla), shortage of feed and grains, and lack of parent stock, respectively. The most economically important disease that attacks chicken Newcastle disease which is locally known as "Kenbesha" in the study areas. All egg quality parameters were statistically similar among the agroecology except significant difference in egg yolk height and albumen height. Shell thickness was comparable to the acceptable eggshell thickness to withstand egg breakage. The yolk index values of the eggs obtained from both agro ranged from 0.54-0.56. The HU value that figures out the quality of albumen was within the range of 70-100 set for good egg quality. Therefore, efforts should be geared to alleviate constraints like prevalence of disease, High chick mortality, predator attack, shortage of feed, and lack of parent stock hampering chicken production, training of smallholder farmers on chicken housing practices, and further research was needed on external and internal egg quality determination under different production system.

Dietary valine affects Japanese quails' sperm parameters and testis histology

Valine is an essential amino acid that participates in various physiological and metabolic activities. The objective of the present study was to investigate the influence of different valine levels in the diet on the reproductive performance of adult male Japanese quails. Forty male quail chicks (14-24 week old) were employed in a completely randomized design with 5 treatments (0.65, 0.75, 0.85, 0.95, and 1.05 % valine in the diet), 4 replicates and 2 birds in each replicate over a period of 35 days following a 14-day adaptation period. Semen was collected weekly, and its characteristics were analyzed. The birds were then ethically slaughtered, and histological analyses were performed on testicular samples. Results showed that the different valine levels had no significant effect on testicle volume, length and relative weight, although testicle diameter tended to decrease with increasing valine level in the diet in a linear and quadratic manner (p < 0.05). The total motility and progressive motility of sperm decreased with an increase in dietary valine (p < 0.05). Abnormal sperm morphology increased with increasing valine level in the diet and the difference between treatments was significant. Different valine levels in the diet significantly affected the height of seminiferous tubule epithelia, diameter and number of tubules as well as the tubular differentiation index of the testis; but the spermatogenic index was not affected by the treatments. The findings of the study indicate that when valine levels in the diet exceed 0.75 %, there is an adverse impact on testicular volume and diameter, as well as the qualitative properties of sperm in adult quails. It is advisable to pursue additional research in this area.

Influence of different environmental challenges on the expression of productive traits in Holstein cattle in the southern region of Brazil

The genotype-environment interaction (GEI) can lead to variations in gene expression related to traits, affecting the breeding value of animals. Assess the effects of GEI on milk yield (MY), fat yield (FY), and protein yield (PY) at 305 days in milk in first-, second and third-parity cows, employing the reaction norms model for Holstein cattle in Paraná state. The study utilized data from the milk testing service provided by the Paraná Association of Holstein Cattle Breeders (APCBRH) in Curitiba, PR, Brazil. This encompassed records from 378,000 records across one to three lactations from 2012 to 2022, originating from 513 herds in 72 cities within the state of Paraná. The environmental gradient was established by standardizing the contemporary group solutions derived from the animal model, disregarding GEI. Reaction norms were calculated using a Random Regression Model, and genotype classification correlations were determined by Spearman's correlation, comparing the breeding values estimated for the analyzed traits in each environmental gradient. Heritability for MY during the first lactation was moderate (0.28) in the least challenging environmental gradient, but of low magnitude (0.18) in the most challenging one. FY heritability estimates varied from low (0.09) to moderate (0.28) across environmental gradients, whereas PY heritability remained low regardless of lactation number and environmental challenge. The study did not identify the occurrence of GEI effects on fat yield, irrespective of parity. No GEI effect was observed on MY or PY in the first and second lactations. However, in the third lactation, GEI affected significantly the MY and PY in Holstein cattle in the state of Paraná, particularly under extreme environmental gradients. The selection for MY, PY, and FY during the first lactation may be the best strategy to promote genetic progress in these traits, because of the smaller effect of GEI at this stage.

Development of a novel procedure for detecting bloody milk based on an objective quantification using opal-glass methods

This study aimed to enhance the reliability of blood-milk detection by quantifying hemoglobin levels in raw milk through visible light spectroscopy combining the sodium lauryl sulfate-hemoglobin and opal-glass methods. Bulk milk samples were collected from the northern (Area A), southern (Area B), and central (Area C) parts of the Tokachi region of Hokkaido from August 2023 to March 2024. Bovine blood was added to milk to make blood-milk samples. A calibration curve was generated using blood milk samples (n = 201) collected from Area C. Blood milk samples collected from Areas A (n = 112) and B (n = 126), were prepared as test sets. A hemoglobin concentration threshold was 0.1 g/L, where identifying bloody milk visually becomes challenging. The calibration curve demonstrated high binary-classification accuracy for bloody milk in Areas A and B, with sensitivities of 93.3 % and 97.2 % and specificities of 94.0 % and 95.6 %.

Animal welfare risks from commercial practices involving cephalopod molluscs and decapod crustaceans

There is increasing recognition that the welfare needs of cephalopod molluscs and decapod crustaceans are important. Current commercial practices involving these animals include a range of potential threats to their welfare, such as conditions of farming, capture, transport, and slaughter. This article draws from and updates our 2021 review for the UK Government, recommending a range of relatively simple and impactful changes that could benefit welfare while highlighting important research gaps that should be prioritised to facilitate the drafting of guidelines for best-practice.

The livestock and poultry farming impact on antibiotic pollution in China and the potential of nitrogen-doped biochar for remediation

As one of the largest global producers and consumers of antibiotics, China's annual antibiotic production reached 223,000 tons in 2022 and continues to rise. The extensive use of antibiotics has led to severe antibiotic residues and environmental pollution, with 52 % of antibiotic residues in the environment originating from the livestock and poultry farming industry. Biochar has been widely applied in the removal of antibiotics, including active biochar, modified biochar, and heteroatom-doped biochar. Among these, nitrogen-doped biochar shows promising application prospects in antibiotic removal due to its well-developed pore structure and excellent catalytic performance. Nitrogen-rich biomass can be directly pyrolyzed to produce self-doped biochar without external nitrogen sources, and selecting suitable raw materials is key to the widespread application of nitrogen-doped biochar in removing antibiotics from natural environments. This review examines the impact of livestock and poultry farming wastewater on antibiotic pollution in China, explores the current status of using different types of biochar for antibiotic removal, summarizes the nitrogen content in nitrogen-doped biochar and its application prospects in antibiotic pollution control, and provides references for the selection of raw materials in the preparation of self-doped nitrogen biochar. This study offers valuable insights for the application of nitrogen-doped biochar in antibiotic pollution removal in China.

Algae bioremediation of swine and domestic wastewater promotes a reduction of coliforms and antibiotic-resistant bacteria

The microbiological load that wastewater may contain is an important factor to consider in wastewater treatment to avoid water bodies contamination and has taken on great relevance due to the possible presence of antibiotic-resistant bacteria. This study investigates the feasibility of bacteria control by phycoremediation treatment using Scenedesmus sp. in two types of wastewater (domestic and swine wastewater). It was determined the cell growth of microalgae culture, and the reduction of total coliforms and enterobacteria load throughout ten days of experiment. In addition, the removal of antibiotic-resistant bacteria was performed using five different antibiotics commonly used in clinical diagnosis: Ampicillin Tetracycline, Ciprofloxacin, Sulfamethoxazole, and Ceftriaxone. The results shown a significant decrease in total coliforms and enterobacteria in the phycoremediation process, it was removed up to 98 % of total coliforms [ from (8.7 ± 2.31) × 104 to (1.6 ± 0.17) × 103 CFU mL -1] in swine wastewater and 99 % in domestic wastewater [(3.6 ± 0.31) × 105 to (2 ± 0.05) × 103 CFU mL -1]. Significant reduction in the case of sulfamethoxazole-resistant bacteria by microalgae in swine wastewater from [(1.47 ± 0.05) × 105 to (5.3 ± 0.57) × 103 ] and domestic wastewater [(4.9 ± 0.15) × 104 to (2.9 ± 0.36) × 103]. These findings demonstrate the versatility and effectiveness of the phycoremediation system since the general microbial control to most specific of antibiotic-resistant bacteria in wastewater, demonstrating its great potential to reduce the risk of public health issues in urban and rural areas.

Modeling and Forecasting Dead-on-Arrival in Broilers Using Time Series Methods: A Case Study from Thailand

Antibiotic-free (ABF) broiler production plays an important role in promoting sustainable and welfare-oriented poultry farming. However, this production system presents challenges, particularly an increased susceptibility to stress and mortality during transport. This study aimed to (i) analyze time series data on the monthly percentage of dead-on-arrival (%DOA) and (ii) compare the performance of various time series models. Data on %DOA from 127,578 broiler transport truckloads recorded between 2018 and 2024 were aggregated into monthly %DOA values. The data were then decomposed to identify trends and seasonal patterns. The time series models evaluated in this study included SARIMA, NNAR, TBATS, ETS, and XGBoost. These models were trained using data from January 2018 to December 2023, and their forecasting accuracy was evaluated on test data from January to December 2024. Model performance was assessed using multiple error metrics, including MAE, MAPE, MASE, and RMSE. The results revealed a distinct seasonal pattern in %DOA. Among the evaluated models, TBATS and ETS demonstrated the highest forecasting accuracy when applied to the test data, with MAPE values of 21.2% and 22.1%, respectively. These values were considerably lower than those of NNAR at 54.4% and XGBoost at 29.3%. Forecasts for %DOA in 2025 showed that SARIMA, TBATS, ETS, and XGBoost produced similar trends and patterns. This study demonstrated that time series forecasting can serve as a valuable decision-support tool in ABF broiler production. By facilitating proactive planning, these models can help reduce transport-related mortality, improve animal welfare, and enhance overall operational efficiency.

Impact of mediterranean fruit fly rearing residues and biological supplementation on performance of gimmizah chicks

For a transformation of the global food system towards sustainability, circular approaches and nutrient-rich side-stream valorization are mandatory. Moreover, affordable and sustainable alternatives to corn, soy, and fish meal are needed in poultry production. Recently, insects and their derived products have gained research interest as alternative sources of conventional feed ingredients in poultry nutrition. The Mediterranean fruit fly (medfly; Ceratitis capitata) production industry using sterile insect technology amasses thousands tonnes of rearing residues annually. This study is the first to shed light on the potential use of medfly rearing residues (MFRR), as a partial replacement for corn and soybean in Gimmizah chicks' diets, with or without biological supplementation (BS). It evaluates their effects on growth, carcass characteristics, blood indices, serum biochemical and histological changes in internal organs. A 7-week trial was conducted using 240, 15-day-old Gimmizah chicks, which were randomly divided into four groups (6 replicates, 10 birds each): the first group (T1) was fed a corn-soybean control diet, the 2nd group (T2) fed the control diet enriched with 1 ml BS/kg diet. The 3rdgroup (T3) received the control diet after replacing 10 % of corn and soybean with MFRR meal, while the 4th group (T4) fed the 10 % replacement by MFRR combined with 1 ml of BS. All groups received isoenergetic and isoprotienic diets with free access to feed and water for 49 days trial period. Compared to the control, both BS and MFRR inclusion with or without BS (T4 and T3, respectively) positively improved body weight, feed consumption, feed conversion, performance index and carcass yield. Blood analysis showed increased red blood cells, hemoglobin, packed cell volume, total protein, albumin, globulins, triglycerides, cholesterol, thyroxine hormone, uric acid and creatinine, with no adverse histological alteration in the bursa or intestine. In conclusion, the study suggests that MFRR can effectively replace 10 % of traditional feed ingredients, with or without BS, enhancing chicks' performance and health. Further future studies are recommended for broader application of MFRR in poultry nutrition.

Microbiomic and Metabolomic Insights into the Roles of Hydrolysable Versus Condensed Tannins on the Growth Performance, Nutrient Digestion, and Rumen Fermentation in Liaoning Cashmere Goats

This study was conducted to compare the effects of hydrolysable versus condensed tannins on growth performance, nutrient digestion, and rumen fermentation in goats. A total of 27 Liaoning cashmere goats with similar initial body weights were randomly distributed into three groups: a basal diet, a basal diet +0.5% tannic acid (hydrolysable tannin, HT), or a basal diet +0.5% quebracho tannin (condensed tannin, CT), respectively. Compared to the control group, HT showed a decreased (p < 0.05) feed intake, while CT showed an increased (p < 0.05) feed intake and body weight gain. Digestibility of dry matter, crude protein, neutral detergent fiber, and acid detergent fiber did not differ (p > 0.05) among groups. The HT group showed lower pH and acetic acid concentration in the rumen (p < 0.05), while the CT group showed a decrease (p < 0.05) in the abundances of Verrucomicrobia and Methanobrevibacter. Supplementation of CT decreased (p < 0.05) the levels of dihydrouracil, xanthosine, alpha-D-mannose, and L-tryptophan, while HT increased (p < 0.05) these metabolites. In conclusion, this study suggested that responses of ruminal microbiota and metabolite profiles to the type of tannins varied, and CT displayed a more positive effect on the growth performance of goats than HT when supplemented at the same level in the diets.

Pharmacokinetic-Pharmacodynamic Cutoff Values for Doxycycline in Pigs to Support the Establishment of Clinical Breakpoints for Antimicrobial Susceptibility Testing

This meta-analysis provides a population model of doxycycline (DOXY) disposition in pigs for computation of PK/PD cutoff values corresponding to differing modalities of DOXY administration orally in pigs. This analysis enables establishment of specific clinical breakpoints for the development of antimicrobial susceptibility testing of DOXY in pigs. The meta-analysis of 380 data sets, totaling 3295 plasma concentrations obtained from 300 pigs weighing 8.5-101 kg, was performed using a non-linear mixed effect model. The plasma clearance for a typical 50 kg BW pig was estimated to be 0.259 L/kg/h with a corresponding plasma half-life of 7.33 h. The bioavailability of DOXY administered in feed under field conditions was estimated to be 50%, with a large between-subject variability of 84.8%. The bioavailability of DOXY in solution in drinking water was significantly lower (30.7%) but much less variable, with a between-subject variability of 34.3%. Several dosing schedules (5 to 20 mg/kg per day) for two administration modalities (drinking water vs. food) were simulated to calculate the corresponding PK/PD cutoffs. The highest PK/PD cutoff of 0.50 mg/L was obtained for DOXY administered in feed at 20 mg/kg BW.

The genomic characteristics of dominant Salmonella enterica serovars from retail pork in Sichuan province, China

Foodborne Salmonella is the main cause of salmonellosis in China. Porcine animals are a reservoir for this bacterium consequently posing a threat to food safety and public health. In this study, 157 out of 240 pork samples (65.42 %) were identified as Salmonella-positive. From these, after isolation and deduplication, 376 Salmonella isolates were collected. Twenty four serovars were identified based on WGS, among which S. London/ST155 (24.47 %), S. Rissen/ST469 (23.40 %), S. Derby/ST40 (13.56 %), and S. 4,[5],12:i:- (monophasic S. Typhimurium)/ST34 (13.30 %) were dominant. In all, 69.68 % (262/376) of these isolates expressed multidrug resistance (MDR, defined as resistance to compounds in three or more antimicrobial classes) phenotypes with S. London (54.35 %, 50/92) accounting for the highest proportion of these. Notably, the resistance to front-line critically important antimicrobial agents (CIA), including cephalosporins, ciprofloxacin, and azithromycin was 0.80 %. Based on in silico analysis, antimicrobial resistant-encoding genes (ARG) identified in the MDR isolates included aac(3)-IId, aac(6')-Iaa, blaTEM-1B, mph(A), qnrB6, aac(6')-Ib-cr, sul1, sul2, and tet(A), which expressed resistance to aminoglycosides, β-lactams, macrolides, quinolones, sulfonamides, and tetracyclines. Furthermore, diverse biocide and heavy metal resistance-encoding genes were distributed across different serovars with triC encoding triclosan resistance being identified exclusively in S. London. Moreover, monophasic S. 4,[5],12:i:- carried the greatest number of virulence factors and heavy metal resistance genes among the dominant serovars. This study extended our understanding of the genomic epidemiology and multidrug resistance of Salmonella derived from pork and highlighted the potential risk to human health, posed by commonly encountered serovars.

Effects of hemp-based polyunsaturated fatty acid supplementation on membrane lipid profiles and reproductive performance in Martina Franca jacks

This study evaluates the impact of dietary supplementation with hemp-based polyunsaturated fatty acids (PUFAs) on the membrane lipid profiles and reproductive performance of Martina Franca jacks. Over a 90-day period, twelve donkeys were divided into a treatment group receiving hemp oil and a control group on a standard diet. Semen and blood samples were collected and analyzed at multiple time points for lipid composition and reproductive parameters. Results revealed that sperm motility improved significantly, increasing from 92.61% in the control group to 96.63% by Day 60 in the treatment group (p = 0.05). Normal sperm morphology also showed a significant enhancement, rising from 96.58% in the control group to 98.85% by Day 60 (p = 0.04). Conversely, gel-free semen volume decreased significantly in the treatment group, from 64.17 mL in the control group to 28.20 mL at Day 60 (p < 0.0001). Lipidomic analyses indicated an increased proportion of omega-3 PUFAs, such as eicosapentaenoic acid (EPA; 0.08% in the control group to 0.20% by Day 60, p < 0.0001), in sperm membranes, alongside a reduction in the peroxidation index (264.11 in the control group to 86.53 in the treatment group, p < 0.0001). These changes suggest improved membrane fluidity and oxidative stability. These findings underscore the potential of hemp oil as a dietary supplement to enhance reproductive outcomes in donkeys, with broader implications for livestock management.

Nutritional evaluation of marula kernel cake (Sclerocarya birrea) compared to Sunflower seedcake (Helianthus annus) as a feed ingredient for ruminants

The growing interest in non-conventional supplementary feeds has triggered research aimed at characterising alternative feed resources such as marula kernel cake (MKC) for improvement of livestock productivity. Samples of MKC and those of sunflower seedcake (SSC) were evaluated for chemical characteristics and rumen degradation. Chemical analysis of the two seedcakes was repeated twice. Dry matter and crude protein in sacco degradation were determined once using three fistulated steers. Samples were incubated in the rumen for 0, 6, 12, 24, 48, and 72 h. MKC had higher (P < 0.05) content of gross energy, crude protein, ether extract and in vitro dry matter digestibility than SSC. Phosphorus and magnesium were higher (P < 0.05) in MKC samples than SSC. Oleic acid content was higher (P < 0.05) in MKC than in SSC whereas level of unsaturated fatty acid (UFA) was similar (P > 0.05) between MKC and SSC. MKC was low (P < 0.05) in lysine compared to SSC. In sacco dry matter disappearance of SSC at 72 h was lower (P < 0.05) than that of MKC. In contrast, crude protein disappearance of both cakes was similar at 72 h incubation. It is therefore concluded that MKC is rich in energy, crude protein, some essential nutrients and could be a useful resource for supplying both energy and protein in ruminant diets.

Probiotic consortium from poultry strains for supporting gut immunity against pathogens

Multi-strain probiotics have gained increasing attention for their ability to enhance host health by modulating the gut microbiota, immune responses, and resistance to pathogens. This study investigated the probiotic efficacy of KMK3, a novel three-strain consortium comprising Lactobacillus brevis (TN9), Ligilactobacillus salivarius (F9/2), and Ligilactobacillus salivarius (TL4/1), in broiler chickens, with a specific focus on pathogen resistance and immune modulation. Growth kinetics revealed that L. brevis (TN9) had the shortest lag phase (2 h) and the highest maximum optical density (OD600 ≈ 1.8), suggesting superior adaptation and growth compared to L. salivarius strains (lag phases: 6 and 4 h; OD600: 1.5 and 1.6, respectively). KMK3 administration significantly enhanced growth performance, with a 13 % higher body weight gain and an improved Feed Conversion Ratio (FCR: 1.50) compared to the control group (FCR: 1.75). The consortium also modulated immune responses, increasing serum antibody titers against Salmonella enterica lipopolysaccharides (4.5 ± 0.2 log10) and upregulating anti-inflammatory cytokine IL-10 while suppressing pro-inflammatory cytokines (IL-1β, TNF-α). Additionally, KMK3-treated chickens exhibited improved gut histopathology, including higher villus height and reduced immune cell infiltration, even under S. enterica challenge conditions. These findings highlight the ability of KMK3 to promote pathogen resistance, modulate immune mechanisms, and enhance gut health, offering insights into the molecular and functional interactions of probiotics in mitigating infectious challenges. This study highlights the therapeutic potential of multi-strain probiotics in advancing poultry health and productivity by targeting host-pathogen interactions and immune regulation.

Stabilizing Total Mixed Ration Dry Matter to Mitigate Environmental-Relative-Humidity Effects on Lactating Cow Performance

This study evaluated environmental relative humidity's (ERH) impact on dry matter (DM) in hay and total mixed ration (TMR), exploring strategies to stabilize milk production in lactating cows by maintaining a consistent TMR DM content. We hypothesized that precise TMR DM adjustments mitigate ERH effects on milk production stability. Experiment 1 showed that grass hay exhibited greater DM variability than alfalfa hay under high ERH. Experiment 2 revealed that high daily ERH variability (>25%) caused fluctuations in hay moisture, affecting TMR DM stability. Increasing TMR DM reduced milk composition variation. In Experiment 3, precise TMR DM adjustments and heat stress levels were evaluated under different temperature-humidity indexes (THIs) in 46 cows over three 28-day periods. The results showed a significant improvement in milk yield (non-adjustment: 26.99 vs. adjustment: 27.29; SEM: 0.32; THIs: 65 to 82; p < 0.05) and a reduction in the variation in milk composition under heat stress. The differences in energy-corrected milk were lower (non-adjustment: 0.47 ± 0.06 vs. adjustment: 0.20 ± 0.09; p < 0.05). This study confirmed that monitoring hay DM and adjusting TMR DM stabilize milk production under variable ERH. Dairy producers can implement routine hay DM monitoring and TMR adjustments to enhance lactating cows' performance.

A Retrospective Study on Prevalence and Surgical Management of Umbilical Hernias in Calves, 1998-2020

Objective: To investigate the prevalence and surgical treatment of umbilical hernias in calves. Animals: Two hundred and sixty-seven calves with umbilical hernias. Methods: Medical records of 505 calves with umbilical disorders between March 1998 and July 2020 were reviewed, with a specific focus on 267 calves diagnosed with umbilical hernias. Data on husbandry type, breed, gender, age, surgical techniques, and surgical outcomes were surveyed in this retrospective clinical study. Results: The prevalence of umbilical hernia was 13.15% with simple umbilical hernias as the most commonly observed pathology. The number of calves with simple umbilical hernias was significantly higher than those with complicated hernias. Calves with umbilical infections exhibited a significantly higher prevalence of hernias (15.32%) compared to those without infection (9.26%). No significant differences were observed in the prevalence of hernias between breeds and genders. The frequency of hernias in calves managed under the range system was significantly higher than those managed under the smallholder system. Recurrence rates of hernias showed no significant differences between open and closed herniorrhaphy methods for the surgical treatment of simple umbilical hernias. 75.6% of calves with hernias were under 14 weeks of age, and the prevalence was almost nearly equal between females and males. Conclusion: Umbilical hernias were more prevalent among Holstein calves raised under the range system with no observed sex predilection. Calves with umbilical infections were 1.77 times more likely to develop umbilical hernias compared to those without infections. No significant difference was found between open and closed methods of herniorrhaphy of simple umbilical hernias.

The effect of the discontinued use of zinc oxide on antimicrobial usage in Danish pig farms

In the Danish pig industry, zinc oxide, used for prevention of E. coli-related post-weaning diarrhoea in weaners, was banned in 2022 due to environmental concerns. This epidemiological study aimed to estimate the effect of the discontinued use of zinc oxide on antimicrobial usage (AMU) for weaners and finishers in Danish farms. Using farm and prescription data from 2018 to 2023 from national databases, we fitted a linear mixed-effect model to a three-level nested dataset, consisting of monthly average standardized AMU (Defined Animal Daily Doses per pig-day), on a farm (n = 4020), overseen by a veterinarian (n = 146). The most significant effect of the zinc oxide ban was seen for weaners, where AMU increased by ∼5 % on average in the first 5 months post-discontinuation, followed by a ∼17 % increase after > 5 months. A long-term effect was also seen for weaners on farms that did not use zinc oxide in the year preceding the ban, where AMU increased by ∼19 % on average > 5 months after the ban was enforced, although from a lower pre-ban AMU. The between-farm variation indicated that the effect of the absence of zinc oxide on the prevalence of post-weaning diarrhoea was significantly influenced by individual farm management practices. The random variation in AMU between farms overseen by the same veterinarian was ∼10 times higher than the estimated variation between veterinarians, indicating that antimicrobial prescriptions made by veterinarians are specific to the disease status in each farm. The estimated autocorrelation in AMU between consecutive months indicates that the constant amount of antimicrobials needed to manage the production is linked to non-varying management practices in individual farms.

Antimicrobial resistance in bacteria from pig production chain: a systematic review and meta-analyses focused on the Brazilian context

Pork industry plays an important role in antibiotics consumption, which can lead to antimicrobial resistance (AMR) spread. Hence, monitoring and controlling AMR in swine production chains is essential to reduce the risks to public health. A systematic review protocol was developed to assess AMR in the pig production chain in Brazil, the fourth largest producer and exporter of pork in the world. More than 3000 strains obtained from swine chain had their antibiotic resistance characteristics assessed. Results showed a major attention to the research of swine AMR in Salmonella and Escherichia coli. Resistance against quinolones has been most investigated and high levels of resistance against tetracyclines were observed. Moreover, resistance profiles and determinants against colistin were frequently found. Meta-analyses were performed to estimate the frequency of microorganisms from the World Health Organization (WHO) global priority pathogens list of antibiotic-resistant bacteria. The results showed prevalences ≤ 0.11 of each priority group in Brazilian pork. As far as is known, this is the first research to provide a comprehensive synthesis of available data on AMR in this production chain. It may support the tackling of knowledge gaps and inspire the enhancement of policies to monitoring, controlling, and managing foodborne AMR.

Virulence genes and antibiotic resistance profiling of staphylococcus species isolated from mastitic dairy cows in and around Bahir dar, Ethiopia

BACKGROUND

Mastitis is one of the primary causes of economic and production losses in the dairy cattle industry. Bacterial infections are the most significant contributors to bovine mastitis, with Staphylococcus species among the most prevalent and challenging pathogens. This issue is especially severe in low- and middle-income countries, including Ethiopia, where a comprehensive understanding of Staphylococcus species in clinical and subclinical mastitis remains poorly understood. This is particularly true in the regions surrounding Bahir Dar, where comprehensive data on the genetic determinants of virulence and resistance in Staphylococcus species causing bovine mastitis are notably lacking. The lack of such molecular insights hampers the development of targeted therapeutic and preventive strategies for managing mastitis in the region. Therefore, the present study aimed to investigate the virulence gene profiles and antimicrobial resistance (AMR) patterns of Staphylococcus species isolated from mastitic dairy cows in and around Bahir Dar, Ethiopia.

METHODOLOGY

A cross-sectional study was conducted from March 2023 to December 2023 to investigate the molecular characteristics of Staphylococcus species and their antimicrobial resistance profiles in dairy cows with mastitis. A total of 150 lactating cows from 21 farms were included in the study, with 600 milk samples collected from the four-quarters of each cow. The samples were screened via the California mastitis test and physical examination. Staphylococcus species isolates were identified and single-plex PCR was used to detect virulence genes. The antimicrobial resistance profile of the isolates was determined via the Kary-Bauer disk diffusion method.

RESULTS

The overall quarter-level mastitis incidence was 19.83% (119/600). Among 119 mastitis-positive samples, 80 samples were bacteriologically confirmed to harbor Staphylococcus species with eight different Staphylococcus species, of which Staphylococcus chromogenes was the most prevalent isolate (19%), followed by S. aureus, S. hyicus and S. epidermidis (15%), S. hemolyticus (11%), S. simulans and S. xylosus (10%), and S. intermedius (5%). Seven distinct virulence genes were identified with varying frequencies: Coa (35%), seb (33.33%), mecA (31.67%), icaD (31.67%), Hla (20%), Hlb (10%), and sea (8.3%). The icaD and seb genes were observed in all 8 species with respective percentages (S. hemolyticus (62.5, 37.5), S. aureus (44.44, 55.55), S. hyicus (44.44, 44.44), S. epidermidis 2 (22.22, 44.44), chromogenes (9.1, 9.1), S. intermidius (33.33, 33.33), S. simulance (16.67, 16.67) and S. xylosus (16.67, 16.67). Both the Hla and Hlb genes were detected in the same three distinct species, with percentages of S. aureus (44.44; 22.22%), S. hemolyticus (42.5; 25%) and S. hyicus (55.55; 22.22). S. aureus exhibited the highest proportion of mecA-positive isolates, with 6 out of 9 isolates (66.67%) carrying the gene. All the isolated Staphylococcus species were 100% resistant to penicillin, and except for S. chromogenes and S. xylosus, the remaining 6 species of Staphylococcus also exhibited 100% resistance to tetracycline. Among all MDR isolates, 6/9 (66.7%) S. aureus, (5/8; 62.5%) S. hemolyticus, and (6/9; 66.7%) S. hyicus were resistant to up to seven classes of antibiotics. A lower frequency of MDR isolates was detected among S. simulans and S. xylosus (both at 2/6; 33.33%), resistant to up to five antibiotics.

CONCLUSIONS

Among the identified Staphylococcus species, S. chromogenes emerged as the dominant isolate. All eight isolated species harbored two or more virulence genes, with nearly one-third of the isolates carrying the mecA gene, underscoring their pathogenic potential in causing bovine mastitis. Furthermore, all the Staphylococcus isolates in this study were resistant to penicillin and were multidrug resistant.

Dietary supplementation with Chinese herbal mixture extracts enhances growth performance, immunity, antioxidant capacity, and intestinal microbiota function in calves

This study examined the effects of dietary supplementation with Chinese herbal mixture extracts (CHE) on growth performance, Immunity, antioxidant capacity, and gut microbiota composition in dairy calves. CHE is a compound extracts powder composed of Honeysuckle, Astragalus, Officinal magnolia bark, and Tangerine peel. Forty calves were randomly assigned to four groups: basal diet (CON), basal diet + 0.1% CHE (LCHE), basal diet + 0.2% CHE (MCHE), and basal diet + 0.4% CHE (HCHE). The experiment was conducted for 56 days with daily observations, bi-weekly weighing, blood sampling, and fecal collection toward the end. The addition of the CHE group significantly increased the average daily weight gain (ADG) and decreased the feed/gain ratio (F/G) compared to the CON group (p < 0.05). The apparent digestibility of crude fat, neutral detergent fiber, and acid detergent fiber was higher in HCHE and MCHE groups (p < 0.05). Serum GH and IGF-1 levels increased in MCHE and HCHE groups (p < 0.05). The blood biochemical analysis revealed that the levels of CA and GLU in the MCHE group were higher than those in the CON group, while remaining within the normal physiological range. Both the IgG and IFN-γ levels and the serum antioxidant levels were significantly increased in the CHE supplementation group compared with the control group (p < 0.05). High-throughput 16S rRNA sequencing revealed changes in gut microbiota, with increased unclassified Muribaculaceae and UCG-005 species in MCHE and HCHE groups (p < 0.05). In conclusion, CHE supplementation enhanced digestion, growth performance, immunity, and gut microbiota balance in calves without toxic side effects.Considering both the economic benefits and the effects of the additive, a clinical dosage of 0.2% CHE additive may be recommended.

Gut microbes-muscle axis in muscle function and meat quality

The concept of the gut microbes-muscle axis underscores the impact of intestinal microbiota on the muscular system, an area that is increasingly coming to light. However, current interpretations and applications of this concept remain underdeveloped. In this review, we concluded and discussed factors, such as short-chain fatty acids, amino acids, vitamins, bile acids, antibiotics, cytokines, hormones, and extracellular vesicles that mediate gut microbes-muscle crosstalk and influence the gut microbes-muscle axis. Additionally, we examined how the gut microbes-muscle axis affects muscle mass, muscle strength, muscle metabolism, as well as muscle oxidative and immune status. Furthermore, we reviewed the influence of the microbes-muscle axis on muscle fiber type transition, muscle fat deposition, and meat quality. These insights illuminate the potential mechanisms by which the gut microbes-muscle axis operates in humans and animals. Thus, this review provides a theoretical foundation for future research and offers practical guidance for its application in biomedical and livestock industries.

Seroepidemiological study of Leishmania infantum, Toxoplasma gondii and Dirofilaria immitis in pet ferrets (Mustela putorius furo) in Spain

Ferrets are susceptible to infections with Leishmania infantum, Toxoplasma gondii, and Dirofilaria immitis; however, epidemiological data on these infections are limited in Europe. A total of 448 serum samples from household ferrets were collected between December 2019 and December 2023 in Spain. In this study, we assessed the seroprevalence of L. infantum and D. immitis using an in-house enzyme-linked immunosorbent assay (ELISA) and T. gondii using an in-house immunofluorescence antibody test (IFAT). Among the ferrets tested, the seroprevalence was 10.49% (47/448) for L. infantum, 2.68% (12/448) for T. gondii and 10.27% (46/448) for D. immitis. There was no significant association between seropositivity and age, gender, neutering status, cohabitation, lifestyle, and collection date. Ferrets classified as sick animals related to the presence of compatible or non-compatible signs showed a higher seropositivity rate for L. infantum (15.90%) compared to subclinical animals (4.76%). Overall, 23.44% (105/448) of the samples were seropositive for at least one of the three parasitic agents, 3.12% (15/448) were positive for two agents, and 0.22% (1/448) tested positive for all three agents. Co-infections were also evaluated, revealing that 12.76% (6/47) of L. infantum seropositive ferrets were also positive for T. gondii (p = 0.011) and 21.27% (10/47) for D. immitis (p = 0.009). To the best of our knowledge, this is the first report on the seroprevalence of L. infantum, D. immitis, and T. gondii within the ferret population in Spain. Understanding the epidemiological status of these and other zoonotic pathogens is crucial for enhancing surveillance in both veterinary and public health sectors, as well as for strengthening prevention and control strategies.