Vsebnost dušika, vezanega na v kislem detergentu netopna vlakna, v krmi s travinja

Jože VERBIČ; Drago BABNIK; Mojca RESNIK

doi:10.14720/aas.2001.78.2.15604

Authors

Jože VERBIČ Agricultural Institute of Slovenia, Hacquetova 17, SI-1001 Ljubljana, Slovenia
Drago BABNIK Agricultural Institute of Slovenia, Hacquetova 17, SI-1001 Ljubljana, Slovenia
Mojca RESNIK Agricultural Institute of Slovenia, Hacquetova 17, SI-1001 Ljubljana, Slovenia

DOI:

https://doi.org/10.14720/aas.2001.78.2.15604

Keywords:

feed, grass, silage, hay, acid detergent, insoluble nitrogen, crude proteins, crude fibre, animal nutrition, statistics, statistical analysis, equations, prediction

Abstract

The relations between the proportion of acid detergent insoluble nitrogen (ADIN, in g kg ^–1 total N) on one hand and concentrations of crude protein and crude fibre on the other have been investigated. It was found that with increasing concentration of crude protein (CP) the proportion of ADIN in grassland forages decreased while with increasing concentration of crude fibre (CF) it increased. At given CP concentration the proportion of ADIN in legumes was higher than in grasses. Proportion of ADIN in hay from extensively managed grasslands was considerably higher than in hay from intensively managed grasslands. At given CP concentration there was a tendency of lower proportion of ADIN in first cut silages in comparison to silages which were made from consecutive cuts. Equations which enabled prediction of the proportions of ADIN in the samples of green forage, hay and silage on the basis of concentration of CP were calculated. It was established that they allowed rough estimates. For the present, accurate concentration of ADIN can be achieved only by the means of chemical analysis.