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Extracellular vesicles in cattle infected with bovine leukaemia virus: isolation and molecular analysis
2024
Szczotka Maria | Wasiak Magdalena | Kuźmak Jacek
Exosomes are nanosized lipid bilayer membranous microvesicles, extracellularly released from a variety of mammalian cells. They mediate intercellular signalling by transporting several types of RNA, lipids and proteins and participate in the intercellular exchange of DNA, RNA, micro RNA, proteins and other components. These microvesicles are present in all body fluids in physiological and pathological conditions and reflect the state of the host organism. The aim of the study was the isolation and molecular determination of exosomes in blood and supernatant fluids of bovine dendritic cell cultures infected with bovine leukaemia virus (BLV).
Show more [+] Less [-]Investigation of doxycycline residues in bones after oral administration to broiler chickens
2024
Gajda Anna | Szymanek-Bany Iwona | Nowacka-Kozak Ewelina | Gbylik-Sikorska Małgorzata
Chicken bones, a by-product of the poultry industry, can directly or indirectly enter the food chain. Bone meal and bone products could be sources of many contaminants. Considering the wide range of uses made of bones in the culinary and food industries, this material needs to be safe and antibiotic residue–free. To determine if such is the case, the concentration of doxycycline in chicken bones was investigated, this antimicrobial being one of the most commonly used in poultry production.
Show more [+] Less [-]Molecular characteristics of fowl adenovirus strains detected in broiler chickens on diets without immunostimulant supplements
2024
Niczyporuk Jowita Samanta | Kozdruń Wojciech | Tomczyk Grzegorz | Piekarska Karolina | Barabasz Marcin | Michalski Marcin
Outbreaks of fowl adenovirus (FAdV) infection in chicken flocks in Poland threaten birds’ health and lives and are rising in frequency. The risk of these infections in immunocompromised poultry flocks with developed clinical symptoms was analysed through virus detection in broiler chicks and correlation of cases with the birds’ immune strength.
Show more [+] Less [-]Probiotic supplementation as an alternative to antibiotics in broiler chickens
2024
Tomczyk Grzegorz | Niczyporuk Jowita Samanta | Kozdruń Wojciech | Sawicka-Durkalec Anna | Bocian Łukasz | Barabasz Marcin | Michalski Marcin
The broiler chicken digestive tract microbiome maintains the bird’s immunity. Its composition has been shown to be important not only for the immune system but also for the gastrointestinal function and productivity of broiler chickens. If the microbiome is populated by supplementation with Lactobacillus, Pediococcus and Saccharomyces spp. – microorganisms with probiotic properties and alternatives to antibiotics – the immune system is stimulated. The use of probiotic supplements in the broiler production cycle can boost bird immunity and prevent adenovirus infection. The resilience of broiler chickens in different feeding schemes including supplementation with these microorganisms was assessed.
Show more [+] Less [-]Phylogenetic analysis of the trypanosomatid parasite Lotmaria passim in honey bees (Apis mellifera) in Poland
2024
Iller Maria | Lipczyńska-Ilczuk Karolina | Sokół Rajmund | Borsuk Grzegorz | Bancerz-Kisiel Agata
Lotmaria passim (L. passim) is a single-celled flagellate which colonises the bee gastrointestinal tract and is highly prevalent in honey bees. This parasite is associated with colony losses. Honey bee (Apis mellifera) colonies were sampled from five apiaries in the north-eastern part of Poland for the phylogenetic analysis of L. passim.
Show more [+] Less [-]Prevalence of Borrelia burgdorferi and Anaplasma phagocytophilum in Ixodes ricinus collected from dogs in eastern Poland
2024
Pańczuk Anna | Tokarska-Rodak Małgorzata | Andrzejuk Patrycja
Ixodes ricinus ticks are an important vector and reservoir of pathogenic microorganisms causing dangerous infectious diseases in humans and animals. The presence of ticks in urban greenery is a particularly important public health concern due to the potential for humans and companion animals to be exposed to tick-borne diseases there. The study assessed the prevalence of Borrelia burgdorferi and Anaplasma phagocytophilum infection in I. ricinus ticks feeding on dogs.
Show more [+] Less [-]Occurrence of herpesvirus in fish
2024
Bergmann Sven Michael | Wang Yingying | Li Yingying | Wang Qing | Klafack Sandro | Jin Yeonhwa | Hofmann Arndt Christian | Kielpinska Jolanta | Becker Anna Maria | Zeng Weiwei
Herpesviruses are common agents in animals of the aquatic environment. They infect many species of fish but only lead to disease in one or two species. Nevertheless, infected fish without clinical symptoms can actively transfer infectious agents to disease-susceptible species. The aim of the study was to identify and prove the natural presence of different herpesviruses.
Show more [+] Less [-]Effect of β-hydroxybutyrate acid on gene expression levels of antioxidant biomarkers and growth hormone–related genes in liver cell culture
2024
Mohsin Muhammad Ali | Zhou Xiaojing | Huiru Yu | Shen Wenxiang | He Baoxiang | Sobiech Przemysław | Pierzchała Mariusz | Ogłuszka Magdalena | Starzyński Rafał | Kalra Garima | Deshmukh Bharti | Thangarasu Revathy | Kashyap Neeraj | Czarnik Urszula | Lepczyński Adam | Woźniakowski Grzegorz | Pareek Chandra S.
In dairy cattle, oxidative stress is a predominant problem associated with diseases and reproductive health issues. This study aimed to detect the variation in the antioxidant biomarkers by adding different concentrations of β-hydroxybutyric acid (BHBA) and sought to elucidate its effects on the gene expression levels of growth hormone (GH) and antioxidant biomarkers in bovine hepatocytes.
Show more [+] Less [-]Diet supplementation with Saccharomyces cerevisiae influences the electrophoretic parameters in blood in young Charolaise bulls
2024
Arfuso Francesca | Giannetto Claudia | Pennisi Melissa | Giudice Elisabetta | Piccione Giuseppe | Gianesella Matteo | Zumbo Alessandro
The objective of the research was to investigate the effect of Saccharomyces cerevisiae supplementation on some acute-phase proteins, haptoglobin and all electrophoretic parameters in young Charolaise bulls.
Show more [+] Less [-]Validation and application of a method for determination of multi-class pesticides in muscle chicken breast fillets using QuEChERS extraction and GC/MS
2024
Tasic Aleksandra Mihail | Ninković Milan | Pavlović Ivan
The occurrence of pesticide residues in animal products deserves attention because of the contamination by environmental pollutants and pesticides that may be present in the food that animals are fed. The goal of this work was the validation of a method for detection of residues of multiple classes of pesticide and determination of their residues in chicken breast fillets.
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