Methane emission suppressant, gas emission measurement method, gas emission measurement system

Abstract

This invention enables accurate measurement of greenhouse gas emissions from animals. It also allows for easy evaluation of the reduction effect of greenhouse gas emissions from animals. Furthermore, it provides a methane emission inhibitor that suppresses methane production from Methanobrevibacter bacteria. [Solution] A methane production inhibitor for addition to animal feed, which is a mammal or bird selected from pigs, dogs, or cats, comprising at least one of an organic acid or organic acid salt, or an oligosaccharide as an active ingredient.

Claims

1. A methane-producing inhibitor for use in animal feed, which is a mammal or bird selected from pigs, dogs, or cats, A methane emission inhibitor containing at least one of the following as an active ingredient: an organic acid, an organic acid salt, or an oligosaccharide.

2. A methane generation inhibitor according to claim 1, A methane generation inhibitor comprising at least one of the following organic acids: citric acid, sorbic acid, formic acid, acetic acid, propionic acid, butyric acid, and lactic acid.

3. A methane generation inhibitor according to claim 1, A methane generation inhibitor comprising at least one of the following organic acid salts: citric acid, sorbic acid, formic acid, acetic acid, propionic acid, butyric acid, and lactic acid, and a salt of potassium, calcium, zinc, or magnesium.

4. A methane generation inhibitor according to claim 1, A methane generation inhibitor comprising at least one of potassium diformate and sodium formate as the organic acid salt.

5. A methane generation inhibitor according to claim 1, A methane generation inhibitor comprising at least one of galactooligosaccharides or fructooligosaccharides as the oligosaccharide.

6. A methane generation inhibitor according to claims 1 to 5, A methane-producing inhibitor that has an inhibitory rate of 80% or more on Metanobrevibacter bacteria.

7. A methane generation inhibitor according to claims 1 to 5, A methane generation inhibitor that causes a change in pH of less than 1 before and after addition to feed.

8. A method for measuring greenhouse gas emissions from animals that are mammals or birds selected from pigs, dogs, or cats, or from the excrement or metabolites of such animals, A gas emission measurement system comprising a cage-like section that defines a breeding space for housing the animal, comprising the step of placing the animal into the breeding space, The process of surrounding the cage portion with a light-transmitting cover portion, The process involves connecting an air supply unit through an air intake hole opened in a part of the surface constituting the cover portion, thereby continuously supplying air into the cover portion, and discharging a portion of the gas inside the cover portion to the outside through a plurality of exhaust holes opened in another part of the surface constituting the cover portion. The steps include: connecting a detection unit through a detection hole opened in another part of the surface constituting the cover portion to initiate pre-detection of at least greenhouse gases among the gases contained within the cover portion; The process includes ending the pre-detection when the amount of greenhouse gases pre-detected by the detection unit has stabilized over time, and starting the main detection by the detection unit, A method for measuring gas emissions, including those mentioned above.

9. A method for measuring gas emissions according to claim 8, A method for measuring gas emissions in which the step of starting the detection in the detection unit is performed 30 minutes or more after the animal is placed in the cage, covered with the cover, and the supply of air is started in the air supply unit.

10. A gas emission measuring system capable of measuring greenhouse gas emissions from animals that are mammals or birds selected from pigs, dogs, or cats, or from the excrement or metabolites of said animals, A cage-like section that defines a breeding space for housing the aforementioned animal inside, A translucent cover portion for surrounding the cage portion, An air supply unit connected to the cover portion surrounding the cage portion is provided for continuously supplying air into the cover portion. A flow meter capable of measuring the amount of air supplied to the cover portion by the air supply unit, A detection unit capable of detecting at least greenhouse gases among the gases contained within the cover portion, A gas emission measurement system comprising: The cover portion has a part of the surface that constitutes the cover portion, An air intake port for connecting to the aforementioned air supply unit, A detection hole for connecting to the aforementioned detection unit, Multiple exhaust holes for discharging a portion of the gas inside the cover to the outside, We have established a system, A gas emission measurement system in which the inside of the cover is maintained at a higher pressure than the outside.

11. A gas emission measurement system according to claim 10, A gas emission measurement system comprising the plurality of exhaust holes, each opening on an opposing side of the cover portion.

12. A gas emission measurement system according to claim 10, A gas emission measurement system wherein the plurality of exhaust holes, the intake holes, and the detection holes are arranged on the upper part of the opposing sides of the cover portion, at positions where they are spaced apart on each side.

13. A gas emission measurement system according to claim 10, A gas emission measurement system in which the opening area of ​​the plurality of exhaust holes or detection holes is formed to be smaller than that of the intake holes.

14. A gas emission measurement system according to claim 10, A gas emission measurement system in which the diameters of the plurality of exhaust holes or detection holes are 2 to 22 mm.

15. A gas emission measurement system according to claim 10, A gas emission measurement system comprising the detection unit configured to start detection when at least greenhouse gases among the gases contained in the cover are in a stable state.

16. A gas emission measurement system according to any one of claims 10 to 13, The aforementioned detection unit is composed of a photoacoustic system, which is used to measure gas emissions.

17. A gas emission measurement system according to any one of claims 10 to 13, A gas emission measurement system in which the animal housed in the cage is a micro miniature pig or a pig raised for food.

18. A gas emission measurement system according to any one of claims 10 to 13, The aforementioned cage section is A slatted floor section, A receiving portion provided on the lower surface of the floor portion, A gas emission measurement system equipped with [a specific feature].

19. A gas emission measurement system according to any one of claims 10 to 13, The gas emission measurement system comprises a cover portion formed in the shape of a box with an open bottom, and a packing provided at the open end of the bottom.

20. A gas emission measurement system according to claim 17, The aforementioned cover portion is a gas emission measurement system having a handle provided on a part of its opposing side.

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