Utjecaj hibrida kukuruza na parametre kvalitete jaja kokoši nesilica tijekom skladištenja

Lapaš, Tihana

prikaz prve stranice dokumenta Utjecaj hibrida kukuruza na parametre kvalitete jaja kokoši nesilica tijekom skladištenja

Access restricted to students and staff of home institution

master's thesis

Utjecaj hibrida kukuruza na parametre kvalitete jaja kokoši nesilica tijekom skladištenja

Zagreb: University of Zagreb, Faculty of Agriculture, 2017. urn:nbn:hr:204:351761

Lapaš, Tihana

University of Zagreb
Faculty of Agriculture
Animal Nutrition

Cite this document

APA 6th Edition

Lapaš, T. (2017). Utjecaj hibrida kukuruza na parametre kvalitete jaja kokoši nesilica tijekom skladištenja (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:351761

MLA 8th Edition

Lapaš, Tihana. "Utjecaj hibrida kukuruza na parametre kvalitete jaja kokoši nesilica tijekom skladištenja." Master's thesis, University of Zagreb, Faculty of Agriculture, 2017. https://urn.nsk.hr/urn:nbn:hr:204:351761

Chicago 17th Edition

Harvard

Lapaš, T. (2017). 'Utjecaj hibrida kukuruza na parametre kvalitete jaja kokoši nesilica tijekom skladištenja', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 19 September 2024, https://urn.nsk.hr/urn:nbn:hr:204:351761

Vancouver

Lapaš T. Utjecaj hibrida kukuruza na parametre kvalitete jaja kokoši nesilica tijekom skladištenja [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2017 [cited 2024 September 19] Available at: https://urn.nsk.hr/urn:nbn:hr:204:351761

IEEE

T. Lapaš, "Utjecaj hibrida kukuruza na parametre kvalitete jaja kokoši nesilica tijekom skladištenja", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:204:351761

Cite this item: https://urn.nsk.hr/urn:nbn:hr:204:351761

Please login to the repository to save this object to your list.

Metadata

Title	Utjecaj hibrida kukuruza na parametre kvalitete jaja kokoši nesilica tijekom skladištenja
Title (english)	The effects of corn hybrids on hen egg quality parameters during storage
Author	Tihana Lapaš
Mentor	Jasna Pintar (mentor)
Committee member	Jasna Pintar (predsjednik povjerenstva)
Committee member	Zlatko Janječić (član povjerenstva)
Committee member	Dalibor Bedeković (član povjerenstva)
Committee member	Marija Duvnjak (član povjerenstva)
Granter	University of Zagreb Faculty of Agriculture (Animal Nutrition) Zagreb
Defense date and country	2017-12-20, Croatia
Scientific / art field, discipline and subdiscipline	BIOTECHNICAL SCIENCES Agronomy
Abstract	Istraživanje je provedeno kako bi se ustanovio utjecaj različitih hibrida kukuruza, temperature i vremena skladištenja na vanjsku i unutarnju kvalitetu konzumnih jaja. Praćeni parametri su masa jaja (g), visina jaja (mm), širina jaja (mm), čvrstoća ljuske (kgf), masa ljuske (g), debljina ljuske (mm), masa žumanjka (g), boja žumanjka, pH bjelanjka, visina bjelanjka (mm) i Haugh jedinice. Prilikom analize koristilo se 240 kokošjih jaja podrijetlom od hibrida Tetra SL LL koje su u pokusni objekt dopremljene s 18 tjedana starosti, a pronesle su u 22. tjednu starosti. Smjese korištene u hranidbi nesilica razlikovale su se u hibridima kukuruza. Ispitivano je pet hibrida kukuruza: Bc 572, Mejaš, Kekec, Pajdaš, Riđan. Kvaliteta jaja utvrđivala se kod svježih jaja (0 dan) te jaja skladištenih 14 dana, 30 dana i 60 dana na 4 °C. Jaja su dodatno skladištena 14 dana u hladnjaku (4 °C), na sobnoj temperaturi (25 °C) i u sušioniku na 30 °C do analize kako bi se utvrdio utjecaj temperature skladištenja na kvalitetu jaja. Temperatura skladištenja značajno (P < 0,05) je utjecala na masu jaja, masu žumanjka, pH bjelanjka, visinu bjelanjka i Haugh jedinice. Vrijeme skladištenja također je imalo značajan (P < 0,05) utjecaj na debljinu ljuske, masu žumanjka, pH bjelanjka, visinu bjelanjka i Haugh jedinice, dok u hranidbi kokoši nesilica korišteni hibridi kukuruza nisu imali značajan utjecaj na vanjsku niti unutarnju kvalitetu jaja. Navedene značajne promjene bile su u vidu narušavanja kvalitete jaja, stoga možemo zaključiti da su povišene temperature i produženo vrijeme skladištenja imali negativan utjecaj na kvalitetu konzumnih jaja.
Abstract (english)	The study was conducted to determine the influence of different corn hybrids, temperature and storage time on the external and internal quality of the egg. The following parameters are egg mass (g), egg height (mm), egg width (mm), shell strength (kgf), shell mass (g), shell thickness (mm), egg yolk mass (g), yolk color, pH of the egg whites, egg whites height (mm) and the Haugh units. During the analysis 240 chicken eggs have been used which originated from the Tetra SL LL hybrids that were arrived in the experimental object with 18 weeks of age and began laying eggs at the age of 22 weeks. The mixtures used in feeding the chickens differed in corn hybrids. Five corn hybrids were tested: Bc 572, Mejaš, Kekec, Pajdaš, Riđan. Egg quality was determined for fresh eggs (0 days) and eggs stored for 14 days, 30 days and 60 days at 4 °C. Eggs were additionally stored for 14 days in a refrigerator (4 °C), at room temperature (25 °C) and in a oven at 30 °C until analysis to determine the influence of storage temperature on the quality of the egg. Storage temperature significantly (P < 0,05) was affected egg mass, yolk mass, pH of the egg whites, egg whites height and Haugh units. Storage time also significant (P < 0,05) affected shell thickness, yolk mass, pH of the egg whites, egg whites height and Haugh units, while corn hybrids used in feeding hens did not have a significant effect on the outer and inner egg quality. The significant changes mentioned were due to egg quality deterioration, so we can conclude that elevated temperatures and prolonged storage time had a negative impact on the quality of the eggs.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:204:351761
Study programme	Title: Animal Nutrition and Feed Science Study programme type: university Study level: graduate Academic / professional title: magistar/ magistra inženjer/inženjerka hranidbe životinja i hrane (magistar/ magistra inženjer/inženjerka hranidbe životinja i hrane)
Type of resource	Text
File origin	Born digital
Access conditions	Access restricted to students and staff of home institution
Terms of use
Repository	Repository Faculty of Agriculture University of Zagreb
Created on	2018-01-17 13:41:02