BIRDS: RESERVOIRS AND CARRIERS OF HUMAN AND ANIMAL DISEASES
Main researcher
: GREGURIĆ, JELENA (14393) Assistants
STUBIČAN, ĐURĐICA (45331)
MUŽINIĆ, JASMINA (92)
JERČIĆ, JURE (18592)
GRANIĆ, JASMINKA (191493)
BOŠNJAK, MARINA (900085)
VLAHOVIĆ-FILKOVIĆ, KSENIJA (900436)
Type of research: applied Duration from: 01/01/91. to 01/01/96. Papers on project (total): 79
Institution name: Veterinarski fakultet, Zagreb (53) Department/Institute: Department of Biology Address: Heinzelova 55 City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0) 290143
Fax: 385 (0) 214697
Summary: During 1991, 1992 and 1993 feral pigeons were regularly
researched (monitored) while the birds living in the wildness ,
domesticated pigeons and pet birds were researched only occasionally. It
was researched the biology and ecology of all the above mentioned birds
as well as the state of health of this birds. By these researches we have
established that the most widespread bird disease is
chlamydiosis/ornithosis/psittacosis, expecially in feral pigeon of which
64,71% were positive. During these three years was monitored the
distribution of feral pigeons in Zagreb and it was established that most
of feral pigeons were permanently staying around the oil refinery The
First Croatian Oil Refinery "Zvijezda", where they can find food. In order
to establish how the feral pigeons influence the health of people,the
blood of poeple working in the oil refinery was serologicaly examined in
order to establish the presence of antibodies for Chl. psittaci. It was
establishes that 18,84% of people were positive to Chl. psittaci. Such a
high percentage of positive people having a permanent contact whith
pigeons shows that for people feral pigeons are constant source of
infection of this disease and in that sense threat to their health .
Such epidemiological researches are still being conducted. Beside being a
threat to human health, such great number of pigeons make also economic
demages because they eat a great quantity of seeds (a pigeon eats 23,40 kg
of food per year). According to officials of Oil Refinary Zagreb pigeons
eat sunflower seeds and oil rape worth 280000 DEM per year which shows how
big is the demage caused by them. It was also established theat great
number of pigeons also gathers in the ZOO-garden end therefore are a
threat to the health of animals kept in the Zoo as well as the
visitors. Together with serological examinations in the birds were made
also parasitological, haemathological, patho-anatomical,
pathohistological,toxicological and biochemical examinations.Rubbish-heaps
and dumps are very often the source of food for birds and therefore at
several occasions the Zagreb and Split city dumps as well as rubbish-heaps
on some islands have been examined. In order to prevent birds from
gathering at dumps, rubbish should be better economised. In that way the
environment will be protected and gathering of birds at dumps,as potential
source of disease, will be prevented. In regard to the gathering of large
number of pigeons around the food-processing industries,
animal-industries, silos, farms, we have been asked for advice in order to
reduce the number of pigeons from those places. In order to reduce the
number of pigeons it is necessary to use materials that are safe for human
health and ecologically justified and therefore the tests using these
materials are been made.
Keywords: birds, biology, ecology, birds diseases, zoonosis, chlamydiosis/ornithosis/psittacosis, epidemiology, human health protection, protection of environment, veterinary public health
Research goals: The goal these researches was that by monitoring
ofbirds , which live near people, to discover in time the deseaseswhich
birds can carry to the people and animals and in thisway can appropriate
actions can be taken in occordancewith the regulations of the Veterinary
public health.It means, that we should not wait for appearance of a
disease to start with diagnostics, therapy and rootingout of this
disease, but it has to be disovered first and preparations its control
must be made. Our pastresearches of pigeons from three ecologically
differentenvironments: feral pigeons, domesticated pigeons and
rockpigeons, have shown , that only feral pigeons are infectedin
greatest number with different causes. This state shows thatit is
necessary to reduce the number of feral pigeons. Thisreduction need not
go under biological minimum, and it isnecessary to use materials whitch
are ecologically justified. Itis necessary to continue these researches in
order to discoverdisease in time in that way protect health of people and
animals.It is also necessary to expand these researches to mammals,
asshown by the results of tests micromethod complement fixationtest by
cattle and sheep, especially now when the micromethodcomplement fixation
test was been installed ( so far this methodwas used only at the
Virusology Department of Croatian Departmentfor Public Health). Due to
costliness of ingradienses, installingof other methods. ELISA or IF is
being prepared and theirinsttaling depends on price and financial
possibillity. From thisfollows that it is necessary to establish a
veterinaryepidemiological center which would not belong to
anyadministration as recommended by the WHO. In that way theadministration
by various abministrative bodies would be avoidedbecause it ia well known
that the administration always limitsand slows the effectiveness of such
centres which have to operateimmediately
COOPERATION - PROJECTS
Name of project
: Dijagnostika TBC, dijagnostika Chlamydia
psittaci Name of institution: Hrvatski zavod za javno zdravstvo City: 10000 - Zagreb, Croatia
COOPERATION - INSTITUTIONS
Name of institution
: Hrvatski zavod za javno zdravstvo, Odjel za
bakteriološku dijagnostiku tuberkuloze; Odjel za virusologiju;Rockefelerova
ulica Type of institution: International organization City: 10000 - Zagreb, Croatia
Name of institution
: Veterinarski fakultet Ljubljana Type of institution: University/Faculty Type of cooperation: Systematic exchange of information City: Ljubljana, Slovenija Other information about the project.