Revision as of 01:53, 13 May 2014 by Justlettersandnumbers(talk | contribs)(copy a small section here from Myostatin, added there by Dysmorodrepanis with revision 497800274 at 02:52, 16 June 2012; and ce)
The Piedmontese (Italian: 'Piemontese'orrazza bovina Piemontese) is a breed of domestic cattle from the region of Piedmont, in north-west Italy. The calves are born fawn in color, turning grey-white as they mature. The cattle carry a unique mutant gene which leads to the hypertrophic muscle growth known as double muscling.
History
Until the late nineteenth century there were numerous local types of Piedmontese cattle, including the Canavese, the Della Langa, the Demonte, the Ordinario di Pianura and the Scelta di Pianura. They were triple-purpose cattle, raised principally for draught power, but valued also for meat and milk. A herd-book was opened in 1877,[citation needed]selective breeding towards a dual-purpose type began, and the Piedmontese became relatively uniform in character. The postpartum hypertrophic muscle growth characteristic, known as "groppa di cavallo" or "horse rump", first appeared in 1886 in the comuneofGuarene d'Alba. It was not in accordance with the then breed standard, and only later attracted the interest of breeders and scientists.[1]
At the beginning of the twentieth century there were about 680,000 Piedmontese cattle in Italy; by 1985 this had fallen to about 600,000.[1] In 1957 the number registered in the herd-book was 851; by the end of 2011 it had risen to 267,243.[2] In 2008 the total number in Italy was estimated at 300,000, of which 230,000 were registered.[1]
Use
In Italy the Piedmontese is a dual-purpose breed: the cattle are raised for their milk, which is used in the production of several traditional cheeses of the region, including Castelmagno, Bra, Raschera and Toma Piemontese;[3] and are also raised for meat, as beef from Piedmontese cattle is seen as a premium product.[citation needed]
Muscular hypertrophy
In the United States Piedmontese beef is regulated by the USDA, which requires that organisations involved in the sale of Piedmontese beef meet labelling and nutritional verification requirements.[4] Piedmontese beef is meat from cattle having 1 or 2 copies of the inactivemyostatin gene. This attribute provides a higher lean-to-fat ratio as well as a less marbled with less connective tissue cut of red meat than from cattle having the "active" version of the gene.[5] The active-myostatin gene acts as a "governor" on muscle growth; Myostatin is a protein that instructs muscles to stop growing. In effect, when inactive, as it is with Piedmontese cattle, it no longer prevents muscle development which is what allows for the condition sometimes referred to as "double muscling".
Animal breeds developed as homozygous for myostatin deficiency may have reproduction problems due to their unusually heavy and bulky offspring, and require a more expensive diet and special care, including veterinary supervision. These factors may make it uneconomic to raise them. Piedmontese beef has a place in the specialist market because of its unusual properties, but may be at a disadvantage in the bulk market.[6]
^ abcdefgDaniele Bigi, Alessio Zanon (2008). Atlante delle razze autoctone: Bovini, equini, ovicaprini, suini allevati in Italia (in Italian). Milan: Edagricole. ISBN 9788850652594. p. 54–55.
^Stefaan De Smet (2004). Double-muscled animals. Encyclopedia of Meat Sciences. Eds. W.K. Jensen, C. Devine & M. Dikeman. Oxford: Elsevier. doi:10.1016/B0-12-464970-X/00260-9. p. 396–402.
These are the cattle breeds considered in Italy to be wholly or partly of Italian origin. Inclusion here does not necessarily imply that a breed is predominantly or exclusively Italian.