diplomsko delo
Andreja Beci (Author), Tatjana Pirman (Reviewer), Dušan Terčič (Mentor)

Abstract

Rdeča pršica (Dermanyssus gallinae) je zunanji zajedavec, ki povzroča največ ekonomske škode v rejah kokoši nesnic. V naravi se pojavlja pri različnih vrstah divjih ptičev, med domačo perutnino je zaradi daljšega trajanja reje in optimalnih razmer v hlevu (temperatura, relativna zračna vlaga) prisotna predvsem v rejah kokoši nesnic. Pogostejša je v alternativnih sistemih rej, ki ji nudijo več prostora za skrivanje in reprodukcijo. Iz jajčeca se razvije v štirih stopnjah: ličinka-protonimfa-deutonimfa-odrasel zajedavec. Razen ličinke se vse ostale razvojne oblike hranijo s krvjo gostitelja. Ker povzroča veliko nevšečnosti in ekonomsko škodo, se iščejo načini za njeno zatiranje. Klasično zatiranje z insekticidi (akaricidi) postaja zaradi škodljivega vpliva insekticidov na okolje in odpornosti pršice nanje vse manj uporabno. V Evropi pogosto uporabljena alternativna metoda zatiranja rdeče pršice sloni na aplikaciji inertnega prahu. Veliko pozornosti se posveča uporabi rastlinskih izvlečkov in olj, pri katerih je problematična predvsem njihova cena in nanos. Med novejše metode zatiranja sodi uporaba pršic predatorjev, bakterij in gliv, ki zavirajo njihov razvoj. Tudi cepljenje kokoši s tako imenovanimi skritimi antigeni se je v nekaterih primerih že izkazalo za uspešno. Učinkovit in praktičen ukrep je dvig temperature v hlevu na 55 C, ki povzroči popolni pogin rdečih pršic.

Keywords

perutnina;kokoši;nesnice;zajedavci;rdeča pršica;zatiranje;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [A. Beci]
UDC: 636.5.09(043.2)
COBISS: 4121480 Link will open in a new window
Views: 7195
Downloads: 848
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Other data

Secondary language: English
Secondary title: Significance and control methods for red mite (Dermanyssus gallinae) in systems for laying hens
Secondary abstract: Poultry red mite (Dermanyssus gallinae) is currently economically the most important ectoparasite of laying hens. It feeds on blood of domestic poultry and some wild birds. The duration of rearing and laying cycle and optimal conditions (temperature, relative humidity) found in most houses for layers allow poultry red mite rapid expansion. Especially all alternative systems offer them plenty of place for hiding and reproduction. Poultry red mite evolves from ovum in four stages and all but larva need a blood meal for further development. Presence of poultry red mite in a flock results in economic loss and worse conditions for hens. Therefore, farmers and scientists put many efforts into development of methods for controlling D. gallinae. Using acaricides is no more effective method as the red mites developed a resistance. Use of inert dusts for pest control is the most common alternative method in Europe. Many studies revealed that plant derived extracts and oils may offer an alternative to acaricides. There is a possibility to use a predator mites or bacteria or entomopathogenic fungi for managing poultry red mite populations. Another useful method is immunisation of hens with concealed antigens. Heating the layer house to 55 C cause complete mortality of D. gallinae.
Secondary keywords: poultry;laying hens;parasites;poultry red mite;control methods;
Type (COBISS): Diploma project paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za zootehniko
Pages: VI, 16 str.
ID: 10959958