Uticaj udela crvene deteline i italijanskog ljulja na kvalitet i hranljivu vrednost silaže

The silage mass of the first-cut of red clover (TP), the variety K-17 at the flowering stage, and of Italian ryegrass (LI), the variety K-13 at the full heading stage, was ensiled. Ensiling was done in a single culture and in mixtures of two masses in the ratio of 75:25, 50:50 and 25:75%. The silage mass was chopped by a forage harvester into segments of 30-50 mm in length. Ensiling was done on May 26, 1995 in experimental containers (capacity of 100 l) in three replicates. Containers were opened and sampling was done 200 days after ensiling. The silage mass of Italian ryegrass as compared to red clover contained higher amounts of fermentable sugars (155:131 g kg-1 DM), had a lower buffering capacity (44.8:58.8 g of lactic acid kg-1 DM) and a more favourable ratio of sugars to buffering capacity (3.50:2.23). Therefore it is more suitable for ensiling. The silage mass of red clover as compared to Italian ryegrass contained an amount of crude proteins higher by 70% (171.1:100.8 g kg-1 DM) and Ca content higher by 2.8 times (14.9:5.3 g kg-1 DM). The crude protein content amounted to 130.6 g kg-1 DM in silages having the equal share of silage masses. Silages scored highest points for the values of pH, NH3-N and soluble N compared to the total N. They were classified into the 1st and 2nd class, i.e. the 1st class, according to the DLG method, i.e. the method developed by the Laboratory of the Research Centre 'Oskar Kellner', Rostock, respectively. In general, sown grassland should be established with the equal share of red clover and Italian ryegrass in biomass, as nutrient contents are adequate for ruminant nutrition and biomass suitable for ensiling.Silirana je neprovenjena silomasa prvog otkosa crvene deteline (TP), sorta K-17 u fazi cvetanja i italijanskog ljulja (LI), sorta K-13 u fazi punog klasanja. Siliranje je obavljeno u čistoj kulturi i u smeši sa odnosom dveju masa 75:25, 50:50 i 25:75%. Silomasa italijanskog ljulja u odnosu na crvenu detelinu je povoljnija za siliranje, ima više fermentabilnih šećera, manji puferski kapacitet. Silomasa i silaža crvene deteline u odnosu na italijanski ljulj sadrži za 70% više sirovih proteina i 2,8 puta više Ca. Silaža sa jednakim udelom silomasa crvene deteline i italijanskog ljulja sadrži 130,6 g kg-1 suve materije. Sve silaže su ocenjene maksimalnim brojem poena za parametre pH, NH3-N, rastvorljivi N u odnosu na ukupni N i buternu kiselinu. Primenom ključa DLG silaže su uglavnom ocenjene I i II klasom, a po drugoj metodi sve silaže su ocenjene I klasom