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Dragan Ćirković

State University of Novi Pazar

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Zoran Stanimirović

University of Belgrade

Jevrosima Stevanović

University of Belgrade

Nevenka Aleksić

University of Belgrade

Uroš Glavinić

University of Belgrade

Spomenka Djurić

University of Belgrade

J. Aleksić

University of Belgrade

I. Omerovic

State University of Novi Pazar

Doroteja Marčić

Universidad de Salamanca

Nikola Puvača

Univerzitet Privredna akademija u Novom Sadu

Srdjan Jovčevski

Cooperative Institutions

University of Belgrade

Croatian Veterinary Institute

University of Novi Sad

University of Veterinary Medicine

Scientific Veterinary Institute "Novi Sad"

University of Belgrade – Faculty of Veterinary Medicine

Institute for Animal Husbandry

IFC Research (United Kingdom)

ORCID

Weatherford College

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The influence of pulverised sugar dusting on the degree of infestation of honey bee colonies with Varroa destructor

Acta veterinaria (2011)

Zoran Stanimirović Nevenka Aleksić Jevrosima Stevanović Dragan Ćirković Milorad Mirilović

The aim of this work was the investigation on the efficacy of pulverised sugar dusting on knocking-down Varroa destructor mites and the influence of the dynamics of the treatment on the degree of infestation in honey bee colonies. Two methods were deployed to measure the degree of infestation of bee colonies with V. destructor mites: the sugar shake method and the technique which involves mesh bottom boards equipped with sticky inserts. The research was carried out on 30 strong honey bee colonies in three successive years. The results proved that dusting with pulverised sugar (particle diameter below 40 μm) influenced the fall of V. destructor in comparison with both their fall off prior to the treatment and the negative control. The most discernible effects on the mite fall and the decline in their population in the hives was obtained with dustings repeated at threeday intervals. To conclude, the dynamics of the treatment affected the degree of infestation in bee colonies. However, the efficacy of sugar dusting was significantly lower in comparison with the one of flumethrin (positive control). Thus, in spite of considerable favourable effects on the decline in the degree of infestation with mites, by no means may dusting with pulverised sugar be advised to beekeepers as the one and only means of bee protection against V. destructor. The use of the technique which involves mesh bottom boards equipped with sticky inserts proved more efficacious and sensitive in the judgment of the degree of infestation of bee colonies in comparison with the sugar shake method, which includes dusting 300 bees with 40 g of pulverised sugar (particle diameter below 40 μm).

Destructor

Degree (music)

10.2298/avb1103309s

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Citations (17)

Effects of probiotics and prebiotics on the production performance of fattening chickens.

Book of proceedings: Fifth International Scientific Agricultural Symposium "Agrosym 2014", Jahorina, Bosnia and Herzegovina, October 23-26, 2014 (2014)

I. Omerovic B. Milošević Z. S. G. Cvijanovic Dragan Ćirković

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Nosema ceranaeand queen age influence the reproduction and productivity of the honey bee colony

Journal of Apicultural Research (2014)

Predrag Simeunović Jevrosima Stevanović Dragan Ćirković Sonja Radojičić Nada Lakić

SummaryThe strength of the honey bee colony and the quality concerning brood production, number of worker bees and honey yield depend substantially upon the characteristics of the queen. Reproductive and productive capacities of the colony, as two important physiological qualities can depend a great deal on the age of the queen. Over the years, the laying ratio of queens could decrease depending on the age; therefore colonies headed by one-year-old queens have proven to be more efficient considering colony population and honey production than ones with older queens. Nosema ceranae infection is a possible reason for the decrease in reproductive capacities and the reduction in the honey production of infected colonies. With the help of numerous pheromones, the queen can preserve colony homeostasis, however exhausted by N. ceranae infection she might compromise the renewal of worker population. The aim of this research is to investigate the influence of N. ceranae on reproduction and productivity of honey bee colonies headed by queens of different age. Experiment was conducted on 27 honey bee colonies equalized with regard to brood, food source, number of worker bees and Nosema infection. In the three year investigation period (2009–2012), Nosema detection, identification and spore load per each colony, as well as parameters of colony reproduction (such as uncapped and capped brood area, queen egg-laying rate and colony strength) and productivity (the total extracted honey and the winter honey stores) were recorded. Concerning the influence of the age of the queens on followed parameters we compared one, two and three-years old queens and found significantly higher reproductive and productive values in favour of younger ones. Significant differences regarding the effects of N. ceranae infection on productive and reproductive characteristics could be explained with a higher capacity of one year old queens to compensate the effects of Nosema infection; a capacity which gradually declines in the second and the third year.

Nosema ceranae

Royal Jelly

10.3896/ibra.1.53.5.09

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Citations (49)

Behavioural defenses of the honey bee ecotype from Sjenica–Pešter against Varroa destructor

Acta veterinaria (2005)

Zoran Stanimirović Jevrosima Stevanović Dragan Ćirković

Two behaviours of honey bees, hygienic and grooming, are mechanisms of defense against brood diseases and parasitic mites, including Varroa destructor. Apis mellifera colonies remove the worker brood infested with Varroa destructor mites from the nest (hygienic behaviour), and groom the mites off other adult bees (grooming behaviour). In this study hygienic and grooming behaviours of Sjeničko-Pešterski honey bee ecotype were analysed in 440 honey bee colonies from 11 localities in the region of Sjeničko-Pešterski plateau, Podpešterje, Golija Mt. and Rogozna ML At each locality 40 honey bee colonies were investigated: 10 potent colonies with one-year old queen, 10 potent colonies with two-year old queen, 10 medium potent and 10 weak honey bee colonies. Hygienic behaviour was expressed in a range from 95.12% to 99.50% in potent honey bee colonies with one-year old and two-year old queens. Statistically highly significant (p<0.01) differences were registered among the analysed honey bee colonies at the investigated region, in favour of the potent honey bee colonies, compared to the medium potent and weak colonies. Also, statistically highly significant (p<0.01) differences were recorded between potent colonies with one-year old queens and colonies with two-year old queens, in favour of the colonies with one-year old queens. In general, investigated colonies belong to a category of the so called "hygienic colonies", as the efficiency of elimination of damaged pupae amounted to 91.50%. Grooming behaviour of Sjeničko-Pešterski honey bee ecotype potentially exists, but its significance cannot be discussed as, on the whole, investigated colonies showed potential of 34,04%. Our results point to an indisputable relationship between analysed behaviours and the strength of honey bee colonies: hygienic behaviour is more expressed in potent colonies (from 95.12% to 99.50%) regardless of queen age; grooming behaviour was expressed only in potent honey bee colonies with one-year old queen at all 11 localities, where the number of damaged mites ranged from 36,05% to 39,61%. The damaged mites were separated into six categories. The most frequent category of damage was damaged legs (53.38% in potent colonies with one-year old queens and 52.02% in potent colonies with two-year old queens). The potent honey bee colonies from the investigated region especially with one-year old queen, could be used for highly selected breeds improving and queens rearing.

Destructor

Varroa sensitive hygiene

Ecotype

10.2298/avb0501069s

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Citations (26)

Honey bee viruses in Serbian colonies of different strength

PeerJ (2018)

Dragan Ćirković Jevrosima Stevanović Uroš Glavinić Nevenka Aleksić Spomenka Djurić

Protection of honey bees is of great economic importance because of their role in pollination. Crucial steps towards this goal are epidemiological surveys of pathogens connected with honey bee losses. In this study deformed wing virus (DWV), chronic bee paralysis virus (CBPV), acute bee paralysis virus (ABPV) and sacbrood virus (SBV) were investigated in colonies of different strength located in five regions of Serbia. The relationship between colony strength and virus occurrence/infection intensity were assessed as well as the genetic relationship between virus sequences from Serbia and worldwide. Real-time RT-PCR analyses detected at least one virus in 87.33% of colonies. Single infection was found in 28.67% colonies (21.33%, 4.00%, 2.67% and 0.67% in cases of DWV, ABPV, SBV and CBPV, respectively). In the majority of colonies (58.66%) more than one virus was found. The most prevalent was DWV (74%), followed by ABPV, SBV and CBPV (49.30%, 24.00% and 6.70%, respectively). Except for DWV, the prevalence of the remaining three viruses significantly varied between the regions. No significant differences were found between colony strength and either (i) the prevalence of DWV, ABPV, SBV, CBPV and their combinations, or (ii) DWV infection levels. The sequences of honey bee viruses obtained from bees in Serbia were 93-99% identical with those deposited in GenBank.

Serbian

10.7717/peerj.5887

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Citations (30)

Strategy for ecologic control in fighting Varroa destructor

Veterinarski glasnik (2007)

Zoran Stanimirović Dragan Ćirković Ivana Pejin D. Pejovic

The ectoparasite Varroa destructor is one of the most wide-spread parasites of the honey bee, which is increasing its resistence to traditional synthetic acaricides more and more with each year. New regulations on quality of the European Union ban the presence of residue in bee products, which rules out the use of chemical means in the course of the honey harvest. The concept of ecologic control of Varroa destructor in honey bee colonies implies the complementary use of adequate biotechnical and biophysical measures and treatments using preparations based on etheric oils and organic acids. The combination of these treatments according to the presented strategy makes it possible to keep varroasis under control.

Destructor

Varroa sensitive hygiene

10.2298/vetgl0702011s

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Citations (8)

Biodiversity of Ticks and Fleas of Dogs in the Western Balkans – Preliminary Examinations

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Veterinary Medicine (2016)

Iván Pavlovic Iván Pavlovic Srdjan Jovčevski Dragan Rogožarski Ferenc Csordás

Ticks and fleas infestation is the most common ectoparasitic condition of dogs with worldwide distribution. In period 2011-2013 we performed preliminary study on the biodiversity of ticks and flea of dogs, from the Western Balkan area. Parasites were collected from dogs in veterinary practices from several cities in various part of Serbia, Macedonia, Republic Srpska (BiH) and Montenegro. During of the study of relative abundance analysis revealed that the species Ixodes ricinus was absolutely dominant, followed by Rhipicephalus sanguineus, Dermacentor marginatus and D. reticulatus. At same examinations three flea species were found at dogs Ctenocephalides felis felis was the most abundant, followed by Ctenocephalides canis and Pulex irritans.

Rhipicephalus sanguineus

Ctenocephalides

Pulex

Dermacentor reticulatus

Babesia canis

10.15835/buasvmcn-vm:11344

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Citations (7)

Assessment of Water Buffalo Milk and Traditional Milk Products in a Sustainable Production System

Sustainability (2020)

Zsolt Becskei Mila Savić Dragan Ćirković Mladen Rašeta Nikola Puvača

Water buffalo (Bubalus bubalis) conservation in Serbia is under an in situ program, but additional efforts are needed to ensure the development of this animal’s genetic resources biodiversity. This research aims to describe challenges and possible strategies for sustainable water buffalo milk production. In this study, the physicochemical characteristics of buffalo milk and buffalo dairy products (cheese, butter, and kajmak) were determined. Furthermore, amino and fatty acids composition and the related health lipid indices (atherogenic and thrombogenic) were assessed. The findings support the fact that buffalo milk is a reliable source of high-quality nutrients (dry matter: 16.10%, fat: 6.02%, protein: 4.61%). Leucine, lysine, and valine content were found to be high in buffalo milk and cheese. A substantial quantity of non-essential glutamic and aspartic amino acids was observed in milk, as well as glutamic acid and tyrosine in cheese. It was established that milk protein of buffalo cheese had a favorable proportion of essential and non-essential amino acids (61.76%/38.24%). The results revealed significant differences (p < 0.05) in fatty acid profiles among the three dairy products for saturated short-chain, n-3, and n-6 fatty acids. Conversely, no significant difference (p < 0.05) was observed in monounsaturated fatty acids content. Kajmak showed the most favorable anti-atherogenic and anti-thrombogenic properties due to lower saturated and higher polyunsaturated fatty acid content. These results confirmed that buffalo milk could be successfully used in producing high-quality traditional dairy products with added value and beneficial characteristics from the aspect of a healthy diet. Furthermore, it could actively contribute to the promotion of sustainable production of buffaloes and strengthen the agricultural production of rural areas and their heritage.

Sheep milk

10.3390/su12166616

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Citations (40)

Peer Review #3 of "Honey bee viruses in Serbian colonies of different strength (v0.1)"

Dragan Ćirković Jevrosima Stevanović Uroš Glavinić Nevenka Aleksić Spomenka Djurić

Protection of honey bees is of great economic importance because of their role in pollination.Crucial steps towards this goal are epidemiological surveys of pathogens connected with honey bee losses.In this study deformed wing virus (DWV), chronic bee paralysis virus (CBPV), acute bee paralysis virus (ABPV) and sacbrood virus (SBV) were investigated in colonies of different strength located in five regions of Serbia.The relationship between colony strength and virus occurrence/infection intensity were assessed as well as the genetic relationship between virus sequences from Serbia and worldwide.Real-time RT-PCR analyses detected at least one virus in 87.33% of colonies.Single infection was found in 28.67% colonies (21.33%, 4.00%, 2.67% and 0.67% in cases of DWV, ABPV, SBV and CBPV, respectively).In the majority of colonies (58.66%) more than one virus was found.The most prevalent was DWV (74%), followed by ABPV, SBV and CBPV (49.30%, 24.00% and 6.70%, respectively).Except for DWV, the prevalence of the remaining three viruses significantly varied between the regions.No significant differences were found between colony strength and either (i) the prevalence of DWV, ABPV, SBV, CBPV and their combinations, or (ii) DWV infection levels.The sequences of honey bee viruses obtained from bees in Serbia were 93-99% identical with those deposited in GenBank.

Serbian

10.7287/peerj.5887v0.1/reviews/3

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Citations (0)