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FEEDING VALUE OF GRASS SILAGES BASED ON DRY MATTER CONCENTRATION

Marina Vranić orcid.org/0000-0001-6280-0116 ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb
Mladen Knežević ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb
Krešimir Bošnjak ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb
Goran Perčulija ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb
Josip Leto ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb
Hrvoje Kutnjak ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb
Maja Lujanac ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb

Sažetak

Total of 477 grass silage samples of different origin and quality were analysed by NIR spectroscopy to determine crude protein (CP), neutral detergent fibre (NDF), digestible organic matter (OM) in the dry matter (DM) (D-value), metabolizable energy (ME), pH value and the ammonium nitrogen (NH3-N). According to DM content (g kg-1 fresh sample), the samples were divided into 8 classes: (1)> 228; (2) 229-313; (3) 314-398; (4) 399-483; (5) 484-568; (6) 569-653; (7i) 654-738; (8) <739. DM increase was followed by a significant (P<0.005) decrease in CP, D-value and ME and an increase (P>0.005) in NDF and pH value. It was concluded that increased DM concentration in silage samples was not a result of –grass wilting before ensiling but of advanced grass maturity at harvest.

Ključne riječi

grass silage; grass maturity; dry matter; chemical composition

Hrčak ID:

62011

URI

https://hrcak.srce.hr/62011

Datum izdavanja:

9.12.2010.

Podaci na drugim jezicima: hrvatski

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