Home Jidori and branded chicken Nagano
Shinshu Ogon Shamo
信州黄金シャモ Nagano
English name: Shinshu Ogon Shamo — no official English name found, so romanised by this site.
Requirements for Shinshu Ogon Shamo: breed — Shamo (game fowl) cross; where raised — produced by farms within the prefecture following the common rearing standard (no municipality is named); rearing period — reared for at least 120 days from hatching; shipped at 120 days of age or older; housing — floor housing, from 28 days of age; from 28 days of age, 5 birds per m² or fewer. Also: to three weeks of age, feed with at least 20.5% crude protein and 3,000 kcal/kg of metabolizable energy; thereafter at least 16.5% and 3,000 kcal/kg; Mixing with other breeds is prohibited; Salmonella testing, measures against infectious and zoonotic disease, and the keeping and passing on of production records; The common standard is headed “a production method exceeding the JAS standard”, and the manual states that the bloodline, rearing period and density exceed it.
Definition — what qualifies
| Breed | Shamo (game fowl) cross A cross with the Shamo line 833 from the Hyogo farm of the National Livestock Breeding Center as sire and the Nagoya breed as dam Sources: [D006] |
|---|---|
| Where it must be raised | Produced by farms within the prefecture following the common rearing standard (no municipality is named) Sources: [D007] |
| Rearing period / age at shipment | Reared for at least 120 days from hatching; shipped at 120 days of age or older Sources: [D006] |
| How it is housed | Floor housing, from 28 days of age from 28 days of age, 5 birds per m² or fewer Sources: [D006] |
| Other conditions |
To three weeks of age, feed with at least 20.5% crude protein and 3,000 kcal/kg of metabolizable energy; thereafter at least 16.5% and 3,000 kcal/kg [D006] Mixing with other breeds is prohibited [D006] Salmonella testing, measures against infectious and zoonotic disease, and the keeping and passing on of production records [D006] The common standard is headed “a production method exceeding the JAS standard”, and the manual states that the bloodline, rearing period and density exceed it [D006] |
Japan's JAS standard for jidori sets four conditions: the chicks, the rearing period, the housing and the stocking density. A brand's own conditions can be stricter, or set differently. The JAS standard for jidori →
Native breeds named in this brand's cross: Shamo ・ Nagoya （All 38 native breeds）
The “at least 50% native-breed blood” in the manual is a quotation of the JAS standard for jidori, not a figure for this brand. Both Shamo and Nagoya are native breeds, so the arithmetic would give 100%, but no primary source states it, so it is not recorded here.
Compared with other brands
21 chicken brands set a minimum rearing period, from 75 to 150 days. 120 days ranks 3rd from the longest (5 others also use 120). 17 brands cap the number of birds per square metre, from 2 to 10. 5 birds ranks 3rd from the most spacious (2 others also use 5).
This guide lists 4 brands from Nagano (also Shinshu Premium Beef, Shinshu Pork and Minami Shinshu Beef). By prefecture →
Compare this brand side by side with others → ・ Find brands by their rules →
Counts cover only the brands in this guide.
Guides
Managed by
- Managed by
- Shinshu Ogon Shamo Promotion Council
- Official site
- https://www.pref.nagano.lg.jp/enchiku/sangyo/nogyo/chikusan/ogonshamo/index.html
Other brands from Nagano
- Shinshu Premium BeefBeef brands
- Shinshu PorkPork brands
- Minami Shinshu BeefBeef brands
About the names
Brand names are proper nouns. English names follow the brand association's official English page first, then the English name in the GI register, and otherwise romanised Japanese plus "Beef", "Wagyu" or "Pork". We never call a non-Wagyu brand Wagyu.
Sources
Sources are in Japanese
- [D006] 信州黄金シャモ飼育管理マニュアル（第2版・平成20年4月） — Nagano Prefecture Livestock Experiment Station and Horticulture & Livestock Division ・ Primary source ・ Accessed 2026-09-28
- [D007] 信州黄金シャモ（長野県農業関係試験場） — Nagano Prefecture ・ Primary source ・ Accessed 2026-09-28