A rich flavor born of feed rice. A Shinshu brand pork from the great land of Nagano, abundant in oleic acid.
Shinshu Kome Buta (Shinshu Rice Pork) is a brand pork nurtured by the rich nature of Nagano Prefecture. Its defining feature is a unique approach of finely grinding and giving feed rice (brown rice) during the fattening period to elevate the oleic acid value of the pork. Maruichi Sangyo Co., Ltd., the managing body, produces stable pork under consistent quality management while maintaining close coordination with local livestock farmers. In Shinshu Kome Buta production, brown rice harvested from local paddies is utilized as feed for the pigs — and the manure discharged from the pigs is processed into compost and returned to the paddy fields. This circular production system organically links the region’s agriculture and livestock — highly evaluated as an environmentally friendly initiative. Pork from pigs fed with feed rice has a high oleic acid value — naturally accumulating a clean, sweet fat quality and rich umami. The oleic acid value of the pork is carefully measured for each individual — quality uniformization is pursued. The breed is a three-breed cross — Landrace × Large Yorkshire sow crossed with Duroc male — with shipping at around 180 days of age and approximately 110 kg as the standard. Slaughtered at Hokushin Meat Center, approximately 10,000 head are distributed annually. Brand standards established in 2012, trademark registered in 2013 — reliability and name recognition as a brand are also steadily established. Drawing on the premium fat quality and rich umami, it is suited to a wide range of preparations including shabu-shabu, yakiniku, and ginger pork stir-fry. Please do enjoy the clean finish and deep flavor unique to oleic acid-rich pork.
Basic Information
- Name
Shinshu Kome Buta - Production Area
Designated farms in Nagano Prefecture - Management Body
Maruichi Sanshyo Co., Ltd. - Breed / Crossbreeding
Three-breed cross: Female (Landrace x Large White) x Male Duroc - Meat Characteristics
Elevated oleic acid from feed rice produces mellow, non-cloying fat sweetness; smooth texture and good freshness retention from high oleic acid content - Feed Characteristics
Finely ground brown rice (feed rice) added during fattening; circular production: rice paddy → feed rice → pig → compost → rice paddy - Shipping Age
Approx. 180 days / 110 kg - Annual Production
Approx. 10,000 head annually. Primary slaughterhouse: Hokushin Meat Center. Primary wholesaler: Maruichi Sanko. - Signature Dish
N/A - Certifications
Trademark registration: March 8, 2013
Brand regulations established: June 2012
Farm HACCP: not applicable
JGAP: not applicable - Related URLs
Maruichi Sanshyo Co., Ltd. (Official Site) - Source
Branded Pork Guidebook 2026, p.119
Maruichi Sanshyo Co., Ltd. (Official Site)
Last updated
6/21/2026