Optimising storage conditions and processing of sheep urine for nitrogen cycle and gaseous emission measurements from urine patches.

ABSTRACT: In grazing systems, urine patches deposited by livestock are hotspots of nutrient cycling and the most important source of nitrous oxide (N₂O) emissions. Studies of the effects of urine deposition, including, for example, the determination of country-specific N₂O emission factors, require natural urine for use in experiments and face challenges obtaining urine of the same composition, but of differing concentrations. Yet, few studies have explored the importance of storage conditions and processing of ruminant urine for use in subsequent gaseous emission experiments. We conducted three experiments with sheep urine to determine optimal storage conditions and whether partial freeze-drying could be used to concentrate the urine, while maintaining the constituent profile

SUBMITTER: Charteris AF 

PROVIDER: S-EPMC8190061 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature