Izvorni znanstveni članak
https://doi.org/10.33128/k.62.1.3
THE FEEDING VALUE OF TWO ENSILED SUDAN GRASS HYBRIDS
Marina Vranić
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Krešimir Bošnjak
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Jasna Lehunšek
; studentica Agronomskog fakulteta Sveučilišta u Zagrebu, Zagreb, Hrvatska
Ranko Gantner
; Fakultet agrobiotehničkih znanosti Sveučilište J. J. Strossmayera, Osijek, Hrvatska
Krešimir Krapinec
; Šumarski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Marcela Andreata-Koren
; Visoko gospodarsko učilište u Križevcima, Križevci, Hrvatska
Sažetak
The objective of the paper was to compare the feeding value of two fermented hybrids of Sudan grass with regard to forage yield, chemical composition and fermentation in the silo. Two varieties of sudan grass, the Su-Su variety and the Pacific graze variety were used in the study. The research was conducted during the growing season in 2014 on the experimental plot of the University of Zagreb Faculty of Agriculture. The harvested forage was ensiled into laboratory silo. After 35 days of ensiling, the fermented forage was analyzed by NIR spectroscopy on the chemical composition and the fermentation quality, and there were estimated forage organic matter (OM), crude protein (CP), neutral detergent fiber (NDF) and acidic detergent fiber (ADF) content, and metabolic energy (ME), digestibility of the organic matter in the dry matter (D-value), crude protein degradability (CPD), intake factor for sheep and cattle, pH value and ammonia N (NH3-N). No statistically significant differences were determined between Pacific Graze and Su-su hybrids in the investigated parameters. The DM yield of hybrids Pacific graze and Su-su was 11.5 t ha-1 and 12.88 t ha-1 respectively (P>0.409), CP content 102.3 g kg-1 DM and 103.8 g kg-1 DM respectively (P>0.802), NDF content 507 g kg-1 DM and 514 g kg-1 DM respectively (P>0.523), D-value 605 g kg-1 DM and 602 g kg-1 DM respectively (P>0.341), pH 4.26 and 4.4 respectively (P>0.193), and NH3-N content 116 g NH3 kg-1 total N and 131 g NH3 kg-1 total N respectively (P>0.254). It was concluded that both Sudan grass hybrids have the potential to produce high-yield fermented forage per unit area while the lower nutritive value of fermented forage in this study was a result of advanced Sudan grass maturity at harvest.
Ključne riječi
Sudan grass; varieties; nutrition value; fermentation quality
Hrčak ID:
259446
URI
Datum izdavanja:
17.9.2020.
Posjeta: 1.012 *