Blue of North
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| colspan=2 align=" center" | Missing image
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! bgcolor=" pink" colspan=" 2" | Name binominal Boss taurus
or Boss primigenius taurus,
or Boss primigenius F. taurus
Linnaeus, 1758
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| Origin
| France and Belgium
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| Diffusion
| Local, preserved race
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| Size
| Average
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| Dress
| Blue magpie
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| Use
| Mixed
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The Bleue of North is a bovine race French.
Origin
It belongs to the branch of the Races of the littoral of the North Sea. It comes from the Belgian race Tirlemont originating in the area of Brussels. Race decimated by the two world wars, it then underwent the competition of more specialized races, like the Prim' Holstein for milk or the Blanc Belgian blue for the meat. It is the subject today of a plan of safeguarding. Manpower is stabilized today around 3600 individuals, divided between 3500 females including 650 registered with the genealogical Registre (open in 1986 and 32 males available in artificial insemination.Morphology
It wears a white dress mottled of gray, blue or black. Its mucous membranes are dark.La cow weighs 700 kg for a size of 1,35 m, and the bull 1150 kg for 1,42 Mr.
Aptitudes
It is a mixed race. Formerly, she added her force of traction to the supply of milk and meat. She produces 5300 liters by lactation, (butyric rate of 3,6% and proteinic rate of 3,1%) but was selected on her meat. The gene Culard belongs to its inheritance between 10 and 20%. Today, the selection tends to maintain the character mixed and to eliminate the character culard, factor of more complicated births.Ses qualities is its docility, its facility of vélage and its good adaptation to a wet and cold area.
Notes and references of the article
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