propozycja. Breed refers to rasa bydła IMO.

--------------------------------------------------
Note added at 7 hrs (2015-01-08 01:15:59 GMT)
--------------------------------------------------

Eating quality of young bulls from three Spanish beef
breed-production systems and its relationships with chemical
and instrumental meat quality

Beef production in Spain is based mainly on both intensive
systems with calves from dairy breeds (mainly Friesian)
and on semi-extensive or intensive systems with
pure local breeds, i.e., Avilen˜a-Negra Ibe´rica, Rubia Gallega,
Asturiana, Pirenaica, Morucha, or crosses, mainly with
Limousin and Charolais (MAPA, 2003). The use of local
beef breeds, reared under traditional systems and commercialised
under the labels of designation of origin (i.e., protected
geographical indication, PGI) or quality trade
marks, has become very important in Spain in recent years.
Nonetheless, producers and retailers often lack the necessary
objective information to promote and to make good
use of the quality (i.e., nutritional and sensorial) of meat
obtained from these breeds, in order to achieve product
differentiation.



http://www.uco.es/zootecniaygestion/img/pictorex/10_10_25_WH...

--------------------------------------------------
Note added at 7 hrs (2015-01-08 01:20:39 GMT)
--------------------------------------------------

European local cattle breed production system as defined in the EURECA project.

https://books.google.com/books?id=qGV8ZMEnjEYC&pg=PA128&lpg=...

cccccccccccc
The effect of breed-production systems on the myosin heavy chain 1, the biochemical characteristics and the colour variables of Longissimus thoracis from seven Spanish beef cattle breeds.


The effect of breed-production system on the myosin heavy chain 1 (MHC-I), the biochemical characteristics and the colour variables of longissimus thoracis (LT) from seven beef breeds was studied:

http://www.ncbi.nlm.nih.gov/pubmed/22062114