The invention belongs to the technical field of feed additives, and particularly discloses a composite
methane inhibitor and a preparation method thereof. The composite
methane inhibitor is prepared from the following raw materials in parts by weight: 16 to 21 parts of oligomeric
schizophyllan, 6 to 10 parts of atractylenolide IV, 3 to 5 parts of
loganin, 1 to 5 parts of
mannosylerythritol lipid and 4 to 8 parts of modified
montmorillonite. Experimental results show that all the components of the compound
methane inhibitor cooperate with one another, and the effects of adjusting intestinal
flora and reducing the methane content can be achieved. Specifically, atractylenolide IV and
loganin synergistically inhibit the activity of methanogens, and oligomeric
schizophyllan has
antioxidant activity, so that oxidation of
unsaturated fatty acid can be inhibited, and side reactions possibly promoting generation of methane are reduced; and the modified
montmorillonite has relatively large interlayer spacing and specific surface area, has an excellent
adsorption effect, and is beneficial to keeping activity of components such as oligomeric
schizophyllan and the like, so that the inhibition effect is further enhanced.