737d2b127560abe457f408542fd38a37 pmc_32998449.pdf 6da032ee4c9df64579e991a01ef7b4c4bf828c2b pmc_32998449.pdf 6555e15d81e3770dd8ba1a75e2817eed53329a3f2a509d7204e97a2f9538d7a0 pmc_32998449.pdf Title: Sexual Allometric Monomorphism in Araucan Pig from Colombia: Preliminary Results Subject: This study aimed to evaluate the allometric growth of the Araucan pig breed, a creole breed from Arauca, East Colombia, locally known as “Sabaneros”, in relation to different quantitative traits and considering genders separately. To do this, a total of 31 male and 27 female Araucan pigs, ranging from 4 to 48 months of age, were studied in order to evaluate their growth patterns, using a multivariate approach. Animals belonged to different farms (“fincas”) of the Department of Arauca, Colombia. From each individual, 10 quantitative traits were obtained: face width, croup height, croup length, croup width, tail base height, hock height, loin height, cannon length, and length and width of ear. Our results, which must be interpreted as preliminary, showed that the Araucan pig is allometrically monomorphic as sexual differences do not increase with body size. We suggest that although males and females have evidently different reproductive roles, during growth they shift the allocation of energy to structures linked to environmental adaptation rather than those linked to reproduction. Keywords: creole breeds; multivariate allometry; relative growth; size sexual dimorphism; sexual selection Author: Arcesio Salamanca-Carreño, Jordi Jordana-Vidal, René Alejandro Crosby-Granados, José Norberto Arias-Landazábal and Pere M. 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Parés-Casanova Subject: This study aimed to evaluate the allometric growth of the Araucan pig breed, a creole breed from Arauca, East Colombia, locally known as “Sabaneros”, in relation to different quantitative traits and considering genders separately. To do this, a total of 31 male and 27 female Araucan pigs, ranging from 4 to 48 months of age, were studied in order to evaluate their growth patterns, using a multivariate approach. Animals belonged to different farms (“fincas”) of the Department of Arauca, Colombia. From each individual, 10 quantitative traits were obtained: face width, croup height, croup length, croup width, tail base height, hock height, loin height, cannon length, and length and width of ear. Our results, which must be interpreted as preliminary, showed that the Araucan pig is allometrically monomorphic as sexual differences do not increase with body size. We suggest that although males and females have evidently different reproductive roles, during growth they shift the allocation of energy to structures linked to environmental adaptation rather than those linked to reproduction. 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