RAZGRADLJIVOST SUHE SNOVI IN SUROVIH BELJAKOVIN V KRMILIH IN OBROKIH ZA MOLZNICE PO METODI IN SACCO

Proučavana je razgradljivost suhe tvari i sirovih bjelančevina u dva ljetna obroka hrane krava. Lsto tako je proučavana razgradljivost dviju krmnih smjesa/K1 i K2/ što su davane u prvom odnosno drugom obroku, te dviije vrste uljne sačme umiješane u K1 i K2. Osnovni obrok bio je isti u oba slučaja: paša 40 kg, sijeno 4,5 kg i krmna smjesa 4,2kg. Nakon 48 sati razgradljivost suhe tvari /RST/ i sirovih bjelančevina /RSB/ te djelotvorna razgradljivost bjelančevina /DRB/ za obrok s K1 bila je 86,15%, 89,41 i 65,71 % odnosno 84,50%, 86,99% i 65,14% za obrok s K2; 92,30%, 80,52% i 50,94% za K1 odnosno 87,25%, 62,81% i 44,66% za K2; 97,90%, 100,00% i 74,92% za sačmu soje i 71,09%, 73,42%, 43,38% za sačmu repice. Razlike u RST, RSB i DRB između sačme uljane repice i K1 i K2 bile su statistički vrlo značajne.The degradability of dry matter and crude protein in two summer feeding rations for cows was studied. The degradability of two feeding mixtures (K1 and K2) which were fed within the first and the second ration, respectively, and of two types of oil seed meal which were included in K1 and in K2 were also studied. The basic ration was the same in both cases: pasture 40 kg, 4.5 kg hay and 4.2 kg mixture. After 48 hours, the degradability of dry matter (DDM) and crude protein (DCP) and effective protein degradability (EPD) for the ration with K1 was 86,15%, 89,41% and 65,71% and 84,50%, 86,99% and 65,14%, respectively, for the ration with K2; 92,30%, 80,52% and 50,94% for K1 , 87 ,25%, 62.81% and 44.66%, respectively, for K2; 97,90%, 100,00% and 74.92% for soybean meal, and 71.09%, 73.42%, 43.38% for rape seed meal. The differences in DDM, DCP and EPD between oil seed meals and K1 and K2 were statistically highly significant.Proučena je razgradljivost suhe snovi in surovih beljakovin dveh poletnih krmnih obrokov za krave. Ugotovljena je tudi razgradljivost dveh krmnih mešanic (K1 in K2), pokladnih pri enem oziroma drugem obroku in tudi dveh vrst oljnih tropin, ki so bile vključene v K1 oziroma K2. Osnovni obrok je v obeh primerih enak, paša 40 kg, 4,5 kg sena in 4,2 kg mešanice. Po 48 urah inkubacije je bila razgradljivost suhe snovi (RSS), surovih beljakovin (RSB) in efektivna razgradljivost beljakovin (ERB) za obrok s K1 86,15%, 89,41% in 65,71% oziroma 84,50% ,86,99% in 65,14% za obrok s K2. RSS, RSB in ERB za K1 je 92,30%, 80,52% in 50,94% oziroma K2 87,25% , 62,81% in 44,66%; za sojine tropine 97,90%, 100,00% in 74,62% ter ogrščične tropine 71 ,09%, 73,42% in 43,38% Razlike v RSS, RSB in ERB med tropinama ter K1 in K2 so statistično visoko značilne