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AutoresGustavo Adolfo Morales-Contreras
Luz Arelis Pino de Morales
The relationship between levels of infection with gastrointestinal nematodes expressed in eggs per gram counts (e.p.g) and categorized as negative, light, moderate and heavy, were analyzed by multivariate analysis of simple linear correspondence and the following results were obtained: The Bergamasca´s daughters were associated with light to moderate level of infection, while in the case of the Barbados Black Belly 1 (BBN 1) daughters, it was found an association with a negative level of infection. The daughters of the Barbados Black Belly 2 (BBN 2) were associated with heavy level of infection. When analyzing each sire breed with their infection levels, it was found that: the Bergamasca sire was associated with a moderate levels of infection, while the Barbados Black Belly 1 (BBN 1) showed infections levels oscillating from light to moderate. The sire Barbados Black Belly 2 (BBN 2) showed a good correspondence with heavy levels of infection. In conclusion, knowing the e.p.g count is a phenotypic expression of resistance to parasitic gastrointestinal infection, that is genetic in nature and therefore heritable. the selection of sire Barbados Black Belly 1(BBN 1) is discussed and proposed. The sire with the highest capacity Helminth Resistant was the BBN1
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