Institute of Livestock and Grassland Science, NARO


The Institute of Livestock and Grassland Science, NARO (NILGS) is the Japanese research institution for livestock and grassland. We promote the technical developments that integrate studies on grassland, animal feed production, livestock production and animal waste treatment and reuse. NILGS's mission is to contribute to increasing the production of safe and high-quality animal products and improving the self-sufficiency rate of feed by utilizing land resources effectively. Throughout our research, we develop technologies that benefit both present and future livestock production, support our plentiful diet, and finally, contribute to the conservation and sustainable use of national land through development of the livestock industry.


Successful application of marker-assisted selection for improving growth performance of Japanese slow-growing brand chickens

Press release on Feb 18, 2019

imageThe Institute of Livestock and Grassland Science, NARO (NILGS-NARO) has succeeded in improving the growth performance in four Japanese slow-growing brand chickens, i.e., Hinai-jidori, Okumino-kojidori, Amakusa Daioh cross, and Miyazaki-jitokko, by molecular marker-assisted selection, in collaboration with the Akita Prefectural Livestock Experimental Station, the Gifu Prefectural Livestock Research Institute, the Kumamoto Prefectural Agricultural Research Center, and the Miyazaki Prefectural Livestock Research Institute. It is expected to be applicable for improving growth performance of the other slow-growing chickens.Read more

Psychological stress alters the sugar chain structure of the intestinal epithelium

Press release on October 25, 2018

imageThe National Agriculture and Food Research Organization (NARO), in collaboration with the National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki University and The University of Tokyo has revealed for the first time that mice subjected to psychological stress exhibited the reduction of a specific sugar chain (fucosylated sugar chain) in intestinal epithelial cells that cover the inner wall of the small intestine. The result of this study is expected to be useful to elucidate the mechanism of changes of gut microbiota in response to psychological stress.Read more

Environmental burden due to livestock production found to be much lower than current estimate

Press release on April 26, 2018

imageTA collaborative study of NARO with several research institutes recalculated the nitrous oxide and methane emission factor based on actual measurements of greenhouse gases generated in swine and cattle wastewater treatment facilities. As a result, we have found that the domestic emission factor of nitrous oxide was found to be over-estimated at present. The estimated value of greenhouse gas emissions using the latest emission factor (total amount of nitrous oxide and methane) associated with swine and cattle sewage treatment was reduced by 600kt CO2 eq. (41%) annually as compared with the estimated value using the current emission factor. The nitrous oxide and methane emission factor calculated this time will be adopted as a new standard for Japan.Read more

Enhanced nitrogen removal in continuous aerated activated sludge swine wastewater treatment

Press release on April 23, 2018

imageThe Institute of Livestock and Grassland Science, NARO (NILGS) has revealed that the nitrogen removal efficiency can be improved by more than 5-fold at low concentration of dissolved oxygen in continuous aerated activated sludge treatment, a popular method for treatment of swine wastewater, based on a small-scale experiment of 1/60,000 and simulation study. This study is expected to pave way for the development of an efficient technology that can greatly improve the nitrogen removal efficiency by simple measurement and control method of dissolved oxygen concentration in the aeration tank.Read more

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