Animal production is a major source of environmental pollutants, so it is becoming crucial to search for new
methods to reduce their release while maintaining animal welfare. The aim of the study was to apply natural additives
to rabbit manure in ex situ conditions to reduce the volume of released gaseous pollutants like ammonia (NH3 ),
methane (CH4 ) and hydrogen sulphide (H 2 S). The study was carried out in two stages, each with a control group and
five experimental groups with additives, natural sorbents (zeolite, bentonite biochar, perlite, mixtures in various
proportions of zeolite, biochar and bentonite as well as perlite and biochar) or dried plants containing saponins
(Tribulus terrestris and Lysimachia nummularia). Pollutants from each group were measured continuously for one
month. In stage 1, both in the case of NH 3 and CH4 , statistically significant differences were observed between the
tested groups. The use of sorbent mix and Tribulus terrestris was shown to reduce the release of both NH 3 (by 80% and
83%, respectively) and CH4 (by 17% and 25%, respectively). The greatest reduction of NH 3 in stage 2 was achieved
when perlite with the addition of biochar was used (56%), and CH4 was achieved when Bacillus azotofixans sp. nov.
bacteria were used (38%).