Mikrobiološka ispravnost morske vode iz mrjestilišta "Cenmar" u Ninu

master's thesis

• Title (english): Microbiology accuracy of sea water from fish-pond "Cenmar" in Nin
• Author: Nikolina Morović
• Mentor: Frane Delaš (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Biochemical Engineering); (Laboratory for General Microbiology and Food Microbiology); Zagreb
• Defense date and country: 2006-02-06, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Biotechnology

Abstract

Cilj umjetne proizvodnje ribe u mrjestilištu je da se gubitak koji se javlja u prirodnom množenju svede na minimum. Da bi se postigli higijenski uvjeti u takvom zatvorenom sustavu, morska voda prolazi mehaničku filtraciju, obradu sterilizacijom u autoklavu, te sterilizaciju ultraviolentnim zrakama. Nužna je također provedba strogih higijenskih mjera za sprječavanje i suzbijanje bolesti, te dezinfekcija koja se provodi nad: a) objektima za uzgoj ribe; b) vodom koja ulazi u objekte za uzgoj ribe; c) predmetima i opremom koji mogu doći u dodir s ribom. Unatoč strogim higijenskim mjerama, kvaliteta morske vode može se mijenjati tijekom uzgoja, prvenstveno pod utjecajem metaboličke aktivnosti uzgajane riblje populacije. Jedan od zadataka ovog rada bio je utvrditi da li umjetan uzgoj ribe zadovoljava potrebne higijenske uvjete gledano s aspekta fekalnog onečišćenja, te proučavanje utjecaja metabolizma uzgajane riblje populacije na bakteriološku sliku morske vode. Uzorkovanje je provedeno u mrjestilištu "Cenmar" u Ninu. Uzorci su uzimani s tri razine bazena: s površine, sredine i dna bazena (zbog mogućeg taloženja ostataka hrane i truljenja), i to prije i nakon hranjenja mlađi lubina. U Zavodu za javno zdravstvo u Zadru određivana je prisutnost koliformnih bakterija, termotolerantnih koliformnih mikroorganizama i vjerojatna Escherichia coli (HRN ISO 9308-2, 1999).

Abstract (english)

Main purpose of artificial fish production is to decrease to minimum the lost that appears in natural reproduction. To accomplish hygienic conditions in close system like this, sea-water goes through mechanical filtration, sterilise-treatment, and UV-sterilisation. Strict hygienic measures must be undertaken to prevent and to succeed in warding of disease, and disinfection which is used for: a) Industrial facility for fish breeding; b) Water that goes in the industrial facility; c) Objects and equipment that can contaminate fish Inspite strict hygienic measures, quality of sea-water can be changed during fish breeding because of fish metabolic activity. Main aim of this research is to establish if artificial fish breeding is satisfing hygienic measures, meaning if there is any coliform organisms and to establish the influence of fish metabolism on bacteriological state of sea-water. Samples are taken in fish-pond "Cenmar" in Nin. They are taken from three depths: surface, middle and from the bottom of the pool (because of possible sedimentation of food rests and because of rot), before and after the fish was fed. In the Institution for public health in Zadar presence of coliform organisms, thermotolerant coliform organisms and presumptive Escherichia coli was determined.

• Keywords: kolimetrija; lubin (Dicentrarchus labrax); marikultura
• Keywords (english): colimetry; lubin (Dicentrarchus labrax); marine culture
• Language: croatian
• URN:NBN: urn:nbn:hr:159:995092
• Study programme: Title: Biotechnology; specializations in: Biochemical-Microbiology; Course: Biochemical-Microbiology; Study programme type: university; Study level: graduate; Academic / professional title: diplomirani inženjer biotehnologije; smjer biokemijsko-mikrobiološki (diplomirani inženjer biotehnologije; smjer biokemijsko-mikrobiološki)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-09-11 09:11:46