Izvorni znanstveni članak
Forage quality on family farms in Croatia corn silage quality on family farms
Marina Vranić
; Agronomski fakultet, Svetošimunska 25, 10000 Zagreb
Mladen Knežević
Goran Perčulija
Darko Grbeša
Josip Leto
Krešimir Bošnjak
Ivana Rupić
Sažetak
The aim of the applied research project: “Forage evaluation by NIR spectroscopy” was to monitor the nutritive value of grass silage, corn silage and hay on family farms in Croatia over 6-month feeding (from November 2003 to May 2004). In this paper the nutritive value of corn silage on 19 dairy family farms from 5 counties was investigated. Extension service staff recommended dairy nutrition based on monthly silage analysis by NIRS instrument (Foss, Model 6500). Scottish calibration models had been applied and determined: dry matter corrected (DM), organic matter (OM) crude protein (CP), neutral detergent fiber (NDF), metabolizable energy (ME), pH value, fermented ME in ME (FME/ME), starch and digestibility of OM in DM (D-value). The results show high DM (391.78 g kg-1), starch (335.13 g kg-1ST) and NDF (425.33 g kg-1ST) content. In average the silage was stabile (pH 3.7), had suitable FME/ME content (0.81) and good digestibility (D-value 71.6%), but of low CP content (65.19 g kg-1). Statistically significant differences (P<0.05) were observed for DM, OM, CP, NDF, pH, starch and FME/ME.
Ključne riječi
corn silage; NIRS; family farm
Hrčak ID:
1558
URI
Datum izdavanja:
20.6.2004.
Posjeta: 3.773 *