Muscular Hypertrophy as a Racial Characteristic: The Case of the Belgian Blue Breed
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TL;DR
The evolution of the Belgian Blue breed from a dual-purpose to an extremely muscled type is described and the hypothesis of a single recessive gene is tested and seems tenable.
Abstract
The evolution of the Belgian Blue breed from a dual-purpose to an extremely muscled type is described. A genetic analysis of this transformation is presented; it is based: 1) on field data; 2) on experimental data. The hypothesis of a single recessive gene is tested and seems tenable. In any case, two distinct biological types segregate within commercial herds with Blue Belgian cattle. The present-day situation of the breed is briefly described and also the testing programmes.