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Intra-breed genetic diversity characterization of the Iberian pig |
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Authors: | I. Clemente, A. Membrillo, P.J. Azor, O. Polvillo, M. Juárez, E. Santos,A.M. Jiménez,E. Diéguez, A. Molina | Issue: | 104-2 (314-322) | Topic: | Animal Production | Keywords: | Iberian Pig, Strains, Characterization, Genetic diversity, DNA microsatellite markers, Meat
quality, Productive parameters | Summary: | The evolution in time of isolated subpopulations assigned to a same breed is the origin of the natural
diversity that arises in any breed animal enriching it. The Iberian Pig breed has not been unaware of
this process, accumulating throughout the centuries a great intra-breed heterogeneity that is reflected
by a high FST value (0.19) among the subpopulations analyzed. In the present study we will undertake
the assessment of the internal genetic diversity of the Iberian Pig breed with special attention to
the four main strains (Negro Lampiño, Entrepelado, Retinto and Torbiscal), without forgetting others
strains and lines that integrate Iberian Pig Breed. To that purpose, we based on different characterization
studies of the strains and lines of the Iberian Pig breed. We emphasize not only their genetic
differences but also the differences among their meat products for fresh consumption (tenderloin) by
strain, in which Negro Lampiño shows the higher percentages of protein, water-holding capacity
(ARC) and intramuscular fat infiltration (23.74, 17.06 and 5.28, respectively), defining a differentiated
quality. Finally, we expose a classification to explain the population structure of the Iberian Pig Breed. |
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