Radovi objavljeni u naučnim časopisima https://repo.niv.ns.ac.rs/xmlui/handle/123456789/4 2026-07-31T05:14:22Z 2026-07-31T05:14:22Z Jokić, Goran Blažić, Tanja Žekić, Marina Bjedov, Linda Gajdov, Vladimir Petrović, Tamaš Savić, Sara https://repo.niv.ns.ac.rs/xmlui/handle/123456789/1144 2026-07-28T07:05:19Z 2026-01-01T00:00:00Z

First records of Borrelia burgdorferi sensu lato in voles and selected Apodemus species in Serbia Jokić, Goran; Blažić, Tanja; Žekić, Marina; Bjedov, Linda; Gajdov, Vladimir; Petrović, Tamaš; Savić, Sara Background Voles and Apodemus mice are recognized as important hosts for numerous parasites and pathogens. Understanding the occurrence of zoonoses, key host characteristics, and the factors influencing their population dynamics and distribution is essential for predicting disease occurrence and assessing the risks of transmission and spread. Determining the role of voles and field mice, in maintaining Borrelia burgdorferi, s.l. in the environment clarifies its transmission during tick activity periods and highlights the need for timely monitoring and control measures. Results We examined the prevalence of Borrelia burgdorferi sensu lato in solid heart tissue of small rodent species (Clethrionomys glareolus, Apodemus spp., Microtus spp.). Detection and molecular typing of bacteria was completed using real-Time PCR and Sanger sequencing. The presence of the pathogen Borrelia afzelii in voles (Microtus arvalis, C. glareolus) and mice (Apodemus agrarius, Apodemus sylvaticus) was recorded in Serbia for the first time during this study. The prevalence of B. burgdorferi s.l. infection in the collected M. arvalis and C. glareolus was 12.9%. and 8.2%, respectively. The prevalence of infected A. agrarius and A. sylvaticus was 66.7% and 20%, respectively. Conclusions The presence of B. burgdorferi s.l. in the sampled animals suggests that rodent species may act as hosts for this pathogen and contribute to its maintenance in the environment.

2026-01-01T00:00:00Z Jakšić, Sandra Galić, Tamara Gardić, Ema Kačarević, Tomislav Nešić, Ksenija Popov, Nenad Živkov-Baloš, Milica https://repo.niv.ns.ac.rs/xmlui/handle/123456789/1143 2026-07-23T12:03:10Z 2026-01-01T00:00:00Z

Histamine in pet food Jakšić, Sandra; Galić, Tamara; Gardić, Ema; Kačarević, Tomislav; Nešić, Ksenija; Popov, Nenad; Živkov-Baloš, Milica Histamine is a biogenic amine formed by microbial decarboxylation of histidine and serves as a significant indicator of protein degradation in animal-based raw materials. Although traditionally associated with fish and fishery products, recent studies have confirmed its presence in pet foods containing fish and meat meals. Factors such as improper storage, elevated temperatures, and prolonged pre-processing intervals significantly contribute to the accumulation of histamine. Regulatory limits for histamine exist in foods intended for human consumption; however, comparable legal thresholds for pet food are currently lacking. Nevertheless, elevated histamine levels may negatively impact palatability, nutrient absorption, and animal health, particularly in sensitive populations such as juveniles and immunocompromised pets. This study examines histamine levels in various animal-derived raw materials and commercial pet foods (both dry and canned), with a particular focus on chicken, game, and fish meals. An HPLC-UV method was used to analyse 13 protein-rich raw materials for pet food samples and 14 pet food samples. Histamine was not detected in shrimp, lamb, quail or pork meals. In chicken and fish meals, histamine content ranged from 23.86±2.60 to 256.98±14.69 mg/kg. In 8 out of 10 dry pet food samples, histamine levels ranged from 9.18±0.56 to 54.24±4.12 mg/kg. Canned pet food samples were free of detectable histamine.

2026-01-01T00:00:00Z Knežević, Slobodan Pajić, Marko Živkov-Baloš, Milica Đurđević, Biljana Prodanov-Radulović, Jasna Ružić, Zoran Vidaković Knežević, Suzana https://repo.niv.ns.ac.rs/xmlui/handle/123456789/1142 2026-07-27T06:08:12Z 2026-01-01T00:00:00Z

Loose and Pelleted Natural Litter: Effects of Composition and Formulation on Litter Quality and Broiler Footpad Health Knežević, Slobodan; Pajić, Marko; Živkov-Baloš, Milica; Đurđević, Biljana; Prodanov-Radulović, Jasna; Ružić, Zoran; Vidaković Knežević, Suzana Litter quality is a key factor influencing broiler welfare, particularly footpad health, yet the effects of loose versus pelleted natural litter formulations are not fully understood. This study assessed the impact of six treatments, composed of wheat straw, wood shavings, and peat in loose or pelleted forms, on litter moisture, pH, and footpad lesions during a 42-day fattening period. Litter condition was monitored weekly through scoring, moisture content, and pH measurements, while footpad integrity was assessed on a weekly basis throughout the fattening period. Loose litter exhibited higher moisture accumulation, greater pH variability, and earlier onset and more severe footpad lesions compared to all pelleted materials as well as wood shavings, which maintained more stable conditions and delayed lesion development. The initial physical properties and formulation of the litter materials contributed to these differences, with coarser textures potentially contributing increased mechanical stress on the footpads. Litter pH values converged and stabilized toward the end of the production cycle across all treatments. These results demonstrate that both litter composition and form significantly influence litter conditioning and broiler welfare. Careful selection and management of natural litter, with attention to moisture retention and pH stability, are essential to reduce footpad dermatitis and support optimal performance in intensive broiler production.

2026-01-01T00:00:00Z Damjanov, Dimitrije Stojčević Maletić, Jelena Petrović, Tamaš Savić, Željka Knežević, Milica Gajdov, Vladimir Ružić, Maja https://repo.niv.ns.ac.rs/xmlui/handle/123456789/1140 2026-07-23T12:02:17Z 2026-05-01T00:00:00Z

Hepatitis E virus seroprevalence and infection status among patients with inflammatory bowel disease undergoing advanced therapy: a prospective single-center observational study Damjanov, Dimitrije; Stojčević Maletić, Jelena; Petrović, Tamaš; Savić, Željka; Knežević, Milica; Gajdov, Vladimir; Ružić, Maja

2026-05-01T00:00:00Z