Utjecaj visine defolijacije poluprirodnog travnjaka na hranjivost svježe i fermentirane biljne mase

master's thesis

• Title (english): The effect of the defoliation height of semi-natural grassland on the nutritive value of fresh and fermented forage
• Author: Anja Novak
• Mentor: Marina Vranić (mentor)
• Committee member: Marina Vranić (predsjednik povjerenstva)
• Committee member: Krešimir Bošnjak (član povjerenstva)
• Committee member: Goran Kiš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Field Crops, Forage and Grassland); Zagreb
• Defense date and country: 2019-09-12, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Cilj ovog diplomskog rada bio je utvrditi hranjivost svjeţe i fermentirane biljne mase poluprirodnog travnjaka obzirom na različite visine defolijacije. Prvi porast biljne mase je skinut na 3 različite visine defolijacije: A tretman (0 cm), B tretman (6 cm) i C tretman (13 cm).
Nakon provedenog istraţivanja utvrĎeno je da se višom defolijacijom biljne mase poluprirodnog travnjaka (13 cm) postiţe značajno niţi udio organske tvari (OT) u fermentiranoj biljnoj masi, u odnosu na niţu defolijaciju (0 i 6 cm) (P<0,05). Udio sirovih proteina (SP) se statistički značajno povećavao s povećanjem visine defolijacije, pa je najveći udio SP zabiljeţen kod najviše defolijacije (13 cm), a najniţi udio SP kod najniţe defolijacije (0 cm) (P<0,001). Količina ME, rezidua šećera i probavljivost OT u ST (D- vrijednost) se statistički značajno povećavala s povećanjem visine defolijacije sa 6 na 13 cm (P<0,05). Razgradivost SP se značajno smanjivala s povećanjem visine defolijacije (P<0,05).

Abstract (english)

The aim of this graduate paper was to determine the effect of the defoliation height on the nutritive value of fresh and fermented forage originated from semi-natural grassland. The study consisted of 3 treatments, i.e. defoliation heights: A treatment (0 cm), B treatment (6 cm) and C treatment (13 cm).
Following the study, it was found that higher defoliation of semi-natural grassland (13 cm) resulted in a significantly lower organic matter (OM) concentration in the fermented forage, compared to the lower defoliation (0 and 6 cm). The proportion of crude protein (CP) increased significantly as the defoliation height increased (P<0,001). The concentration of metabolic energy (ME), sugar and the digestibility of the OM in the dry matter (D-value) increased with the increasing defoliation height from 6 to 13 cm (P<0,05). Degradability of CP decreased significantly with increasing defoliation height (P<0,05).

• Keywords: svjeţa biljna masa; fermentirana biljna masa; visina defolijacije; hranidbena vrijednost krme
• Keywords (english): fresh plant mass; fermented plant mass; defoliation height; forage nutritive value
• Language: croatian
• URN:NBN: urn:nbn:hr:204:615709
• 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: Open access
• Created on: 2019-11-25 10:02:54