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Veterinaria México OA
versão On-line ISSN 2448-6760
Resumo
BERRUECOS, J.M.. Una hipótesis sobre la presentación de tres defectos hereditarios en el cerdo. Veterinaria México OA [online]. 2020, vol.7, n.3, 923. Epub 23-Maio-2022. ISSN 2448-6760. https://doi.org/10.22201/fmvz.24486760e.2020.3.923.
Data of 23,449 piglets (2,399 litters) of a comercial farm in the Northwest parto f Mexico were analyzed. All litters were from hybrid shows and purebreed boars, registered Duroc, Yorkshire, Chester-White and Hampshire. Looking at the frequency on cryptorchidism, umbilical hernia and pseudohermaphroditsm, the expected value of boars being double and triple carriers of a single gene, the Independence hypothesis is rejected when it is compared with the observed values. An hypothesis of a single gene affecting the middle line is proposed. The consideration must be taken when selecting breeding animals in order to avoid the presentation of these and probably other middle line deffects.