Hranidbena vrijednost kukuruzne silaže

master's thesis

• Title (english): The nutritional values of corn silage
• Author: Lucija Božić
• Mentor: Marina Vranić (mentor)
• Committee member: Marina Vranić (predsjednik povjerenstva)
• Committee member: Kristina Kljak (član povjerenstva)
• Committee member: Krešimir Bošnjak (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Field Crops, Forage and Grassland); Zagreb
• Defense date and country: 2017-09-27, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Biljka kukuruza je najvažnija silažna kultura koja se koristi kao glavno voluminozno krmivo u hranidbi visokomliječnih krava. Konzerviranje biljke kukuruza se postiže u anaerobnim uvjetima fermentacijom ugljikohidrata u kiseline.
Cilj ovog diplomskog rada bio je utvrditi hranidbenu vrijednost i kvalitetu fermentacije 124 uzoraka kukuruznih silaža s 20 farmi muznih krava koji su analizirani NIR spektroskopijomu laboratoriju pokušališta Agronomskog fakulteta Centar za travnjaštvo na Medvednici obzirom na slijedede kemijske parametre: suha tvar(ST), kiselost (pH vrijednost), metabolička energija (ME), organska tvar (OT), probavljivost OT u ST (D – vrijednost), škrob, sirovi proteini (SP) i neutralna detergentvlaknina (NDV).
Rezultati istraživanja ukazuju na prosječan visoki sadržaj ST analiziranih uzoraka kukuruznih silaža (379,13 g ST kg-1 svježeg uzorka), visoku D-vrijednost (74,06 %), poželjan sadržaj ME (11,53 MJ kg-1 ST) i škroba (349,46 g kg-1 ST).
Obzirom na procijenjene vrijednosti kemijskih parametara, analizirani uzorci kukuruznih silaža (n=124) ukazuju na visoku hranjivost.

Abstract (english)

Most of the maize produced is used for feeding livestock. Maize silage is the most important forage in the feeding programme of dairy farms. The aim of this graduate paper was to determine the nutritional value and quality of the fermentation of 124 samples of maize silage from 20 dairy farms analysed by NIR spectroscopyin the Grassland Research Center of the Faculty of Agriculture. The following chemical parameters were peredicted: dry matter (DM), acidity (pH), metabolic energy (ME), organic matter (OM), the digestibility of OM in DM (D-value), crude proteins (CP) and neutral detergent fiber (NDF).
The analysed maize silage samples were in average of high DM concentration (379,13 g DM kg-1fresh samplehigh D-value (74,06 %), recommended ME (11,53 MJ kg-1DM) and starch (349,46 g kg-1DM).
It was concluded that, considering the predicted analytical parameters, the analysed maize silages were of high nutritive value.

• Keywords: kukuruzna silaža; NIR spetroskopija; hranjivost kukuruzne silaže
• Keywords (english): maize silage; NIR spectroscopy; nutritivevalue
• Language: croatian
• URN:NBN: urn:nbn:hr:204:533979
• Study programme: Title: Plant Sciences; Study programme type: university; Study level: graduate; Academic / professional title: magistar / magistra inženjer/inženjerka biljnih znanosti (magistar / magistra inženjer/inženjerka biljnih znanosti)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-10-25 12:43:09