Procjena utjecaja uzgoja u srodstvu na svojstva mliječnosti istarske ovce

Kurelović, Ana

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master's thesis

Procjena utjecaja uzgoja u srodstvu na svojstva mliječnosti istarske ovce

Zagreb: University of Zagreb, Faculty of Agriculture, 2024. urn:nbn:hr:204:205697

Kurelović, Ana

University of Zagreb
Faculty of Agriculture
Animal Science and Technology

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APA 6th Edition

Kurelović, A. (2024). Procjena utjecaja uzgoja u srodstvu na svojstva mliječnosti istarske ovce (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:205697

MLA 8th Edition

Kurelović, Ana. "Procjena utjecaja uzgoja u srodstvu na svojstva mliječnosti istarske ovce." Master's thesis, University of Zagreb, Faculty of Agriculture, 2024. https://urn.nsk.hr/urn:nbn:hr:204:205697

Chicago 17th Edition

Harvard

Kurelović, A. (2024). 'Procjena utjecaja uzgoja u srodstvu na svojstva mliječnosti istarske ovce', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 22 January 2025, https://urn.nsk.hr/urn:nbn:hr:204:205697

Vancouver

Kurelović A. Procjena utjecaja uzgoja u srodstvu na svojstva mliječnosti istarske ovce [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2024 [cited 2025 January 22] Available at: https://urn.nsk.hr/urn:nbn:hr:204:205697

IEEE

A. Kurelović, "Procjena utjecaja uzgoja u srodstvu na svojstva mliječnosti istarske ovce", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:204:205697

Cite this item: https://urn.nsk.hr/urn:nbn:hr:204:205697

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Title	Procjena utjecaja uzgoja u srodstvu na svojstva mliječnosti istarske ovce
Title (english)	The impact of inbreeding on dairy traits of istrian sheep breed
Author	Ana Kurelović
Mentor	Ante Kasap (mentor)
Committee member	Ante Kasap (predsjednik povjerenstva)
Committee member	Jelena Ramljak (član povjerenstva)
Committee member	Milna Tudor Kalit (član povjerenstva)
Granter	University of Zagreb Faculty of Agriculture (Animal Science and Technology) Zagreb
Defense date and country	2024-09-18, Croatia
Scientific / art field, discipline and subdiscipline	BIOTECHNICAL SCIENCES Agronomy
Abstract	Utjecaj uzgoja u srodstvu (kvantificiran koeficijentom F) na svojstva mliječnosti je nedovoljno istražen kod ovaca, a budući da je u većini stada istarske ovce mlijeko glavni proizvod, cilj rada bio je utvrditi kako F utječe na 1) količinu proizvedenog mlijeka i 2) udjele masti i bjelančevina u mlijeku. Istraživanje je provedeno na proizvodnim podacima prikupljenim u uzgojno valjanoj populaciji istarske ovce rutinskim kontrolama mliječnosti propisanim nacionalnim uzgojnim programom. Analiza je izvršena multi-faktorijalnim statističkim modelom (metoda ANCOVA) u kojeg je uz ostale izvore fenotipske varijabilnosti (veličina legla, redoslijed laktacije, sezona, stado te trajanje sisanja i mužnje) uključen prethodno procijenjeni koeficijent uzgoja u srodstvu temeljem podataka iz rodovnika (Fped). Prosječni Fped populacije je bio 9%. Regresijom fenotipskih vrijednosti na Fped utvrđena je pozitivna povezanost Fped s količinom proizvedenog mlijeka, a negativna sa sadržajem mliječne masti i bjelančevina (P>0,05). Za generalizaciju utjecaja Fped na svojstva mliječnosti kod ovaca potrebna su dodatna istraživanja.
Abstract (english)	The impact of inbreeding (measured by coefficient F) on dairy traits has been insufficiently researched in sheep, and since milk is the main product of Istrian sheep, the aim of the study was to determine how level of the F affects 1) milk yield and 2) fat and protein content in milk. The research was conducted on "field" data collected in nucleus flocks during milking controls that are obligatory according to the national breeding program. The analysis was performed using a multifactorial statistical model (ANCOVA method). The coefficient of inbreeding, previously estimated from the pedigree (Fped), was included the statistical model together with other sources of phenotypic variability (litter size, parity, season, flock, and duration of suckling and milking periods). The average Fped of the population was 9%. The regression of phenotypic values on Fped revealed a positive relationship between Fped and the milk yield (P>0.05), and a negative relationship between Fped and content of fat and protein (P>0.05). Additional research is needed in the future to generalize the impact of Fped on dairy traits in sheep.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:204:205697
Study programme	Title: Production and Processing of Milk Study programme type: university Study level: graduate Academic / professional title: magistar / magistra inženjer/inženjerka proizvodnje i prerade mlijeka (magistar / magistra inženjer/inženjerka proizvodnje i prerade mlijeka)
Type of resource	Text
File origin	Born digital
Access conditions	Open access
Terms of use
Repository	Repository Faculty of Agriculture University of Zagreb
Created on	2024-09-20 12:12:37