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master's thesis
Genetski trendovi za debljinu leđne slanine u svinja u testu u proizvodnim uvjetima
Zagreb: University of Zagreb, Faculty of Agriculture, 2018. urn:nbn:hr:204:194051
Blažur, Klara
University of Zagreb
Faculty of Agriculture
Animal Science and Technology

Institutional repository: Repository Faculty of Agriculture University of Zagreb

Cite this document

Blažur, K. (2018). Genetski trendovi za debljinu leđne slanine u svinja u testu u proizvodnim uvjetima (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:194051

Blažur, Klara. "Genetski trendovi za debljinu leđne slanine u svinja u testu u proizvodnim uvjetima." Master's thesis, University of Zagreb, Faculty of Agriculture, 2018. https://urn.nsk.hr/urn:nbn:hr:204:194051

Blažur, Klara. "Genetski trendovi za debljinu leđne slanine u svinja u testu u proizvodnim uvjetima." Master's thesis, University of Zagreb, Faculty of Agriculture, 2018. https://urn.nsk.hr/urn:nbn:hr:204:194051

Blažur, K. (2018). 'Genetski trendovi za debljinu leđne slanine u svinja u testu u proizvodnim uvjetima', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 23 November 2024, https://urn.nsk.hr/urn:nbn:hr:204:194051

Blažur K. Genetski trendovi za debljinu leđne slanine u svinja u testu u proizvodnim uvjetima [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2018 [cited 2024 November 23] Available at: https://urn.nsk.hr/urn:nbn:hr:204:194051

K. Blažur, "Genetski trendovi za debljinu leđne slanine u svinja u testu u proizvodnim uvjetima", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:204:194051

Metadata
TitleGenetski trendovi za debljinu leđne slanine u svinja u testu u proizvodnim uvjetima
Title (english)Genetic trends for backfat thickness in field test of pigs
AuthorKlara Blažur
MentorDubravko Škorput (mentor)
Committee memberDubravko Škorput (predsjednik povjerenstva)
Committee memberZoran Luković (član povjerenstva)
Committee memberDanijel Karolyi (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Agriculture
(Animal Science and Technology)
Zagreb
Defense date and country2018-09-20, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Agronomy
Abstract
Cilj rada bio je analizirati genetske trendove za debljinu slanine u testu svinja u proizvodnim uvjetima od 1998 do 2017. godine u uzgojnom programu za svinje u Hrvatskoj. U istraživanje su bile uključene životinje sljedećih pasmina: veliki jorkšir, landras i pietren. Podatkovni zapis sadržavao je informacije o pasmini i spolu životinje, sezoni testiranja, vlasniku životinje, tjelesnoj masi, starosti životinje, debljini slanine, te dobi na kraju testa i dnevnom prirastu. Za procjenu uzgojnih komponenti varijance te procjenu uzgojnih vrijednosti korišten je model životinje. Heritabiliteti za debljinu slanine kretali su se u skladu s dosadašnjim istraživanjima u pasmina landras (0,44) i veliki jorkšir (0,26), dok su uočeni su niski heritabiliteti u pasmine pietren (0,06). U sve tri pasmine uočene su niske vrijednosti fenotipske varijance. Analizom genetskog trenda za debljinu slanine u pasmine landras utvrđen je varijabilan trend u analiziranom razdoblju. Padajući (povoljni) genetski trendovi utvrđeni su u pasmina pietren i veliki jorkšir. Genetski napredak u smanjenju debljine slanine u analiziranom razdoblju je relativno spor kao posljedica niske fenotipske varijance, osobito u pasmine pietren. Rezultati ovog istraživanja ukazuju na učinkovitost selekcije kod pasmina pietren i veliki jokšir za razliku od pasmine landras gdje ukupni genetski trend ne pokazuje genetski napredak te takvi rezultati upućuju na potrebu analiziranja učinkovitosti selekcije za pasminu landras.
Abstract (english)
The objective of this study was to analyse the genetic trends for backfat thickness in field test of pigs from 1998 to 2017 in breeding program for pigs in Croatia. The research included animals of the following breeds: Landrace, Large White, and Pietren. Data record contained the information about breed and sex of the animal, testing season, the owner of the animal, body mass, age of the animal, backfat thickness, the age of the end of the test and daily gain. For the estimation of variance components and estimation of breeding value the animal model was used. Heritability for backfat thickness were in line with previous research in the Landrace breed (0,44) and Large White (0,26), while the low heritability of the Pietren breed was noticed. In all three breeds, low values of phenotypic variance were observed. By analysing the genetic trend for backfat thickness in the breed of Landrace a variable trend was established in the analysed period. Negative (favourable) genetic trends were found in Pietren and Large White. Genetic progress in reducing backfat thickness in the analysed period is relatively slow as a result of a low phenotypic variance, especially in the Pietren breed. The results of this study indicate the selection efficiency in breeds of Pietren and Large White unlike from the Landrace breed where the overall genetic trend does not show genetic progress and such result point to the need to analyse the efficiency of selection for the Landrace breed.
Keywords
Languagecroatian
URN:NBNurn:nbn:hr:204:194051
Study programmeTitle: Production and Processing of Meat
Study programme type: university
Study level: graduate
Academic / professional title: magistar / magistra inženjer/inženjerka proizvodnje i prerade mesa (magistar / magistra inženjer/inženjerka proizvodnje i prerade mesa)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2018-10-02 13:23:30