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Biochemical polymorphisms and genetic relationships between Brazilian and foreign breeds of pigs reared in Brazil Ciência Rural
Tagliaro,Cláudia Helena; Franco,Maria Helena Lartigau Pereira; Schneider,Maria Paula Cruz; Brito,Benito Guimarães de; Barbosa,Antonio Stockler.
The genetic variability of 14 protein systems encoded by 15 structural loci was investigated in blood samples of Piau and Caruncho pig breeds. The results were compared with those obtained previously for samples of Landrace, Large White, Duroc and Mouro. The degree of genetic variability obtained for Piau (He=0.114) was similar to that estimated for other breeds reared in Brazil (Landrace, He=0.116; Large White, He=0.119; Duroc, 0.095; Mouro, He= 0.130). Caruncho showed the lowest variability (He= 0.056). The gene frequencies at the polymorphic loci were used to evaluate the usefulness of these systems for paternity testing and the combined probabilities of paternity exclusion were estimated at 58% for the Piau and 36% for the Caruncho breed. Analysis of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Swine; Protein polymorphisms; Genetic relationships.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781999000200022
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Genetic polymorphism and relationships among several swine populations of landrace, large white and duroc breeds Ciência Rural
Tagliaro,Cláudia Helena; Franco,Maria Helena Lartigau Pereira; Weimer,Tania Azevedo.
The data of three protein polymorphisms were used to investigate the genetic relationships among the Landrace, Large White and Duroc swine breeds reared in Brazil, 12 other populations of these same breeds from various countries and a population of Belgium Landrace. The dendrogram, constructed from matrix of genetic distance coefficients, disclosed three large groups clustered by breed. Among them, the Landrace and the Large White showed in average closer resemblance (D= 0.203) than between them and Duroc (D= 0.241). It the three breeds, the smallest genetic distances were found between Brazilian and Cuban pig populations (Landrace: D = 0.060; Large White: D = 0.052; Duroc: D = 0.065), although there were not reports of pig exchanges between these two...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Swine; Protein polymorphisms; Genetic relationships.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781997000300021
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Protein phenotypes and productive traits in Landrace, Large White and Duroc swine Ciência Rural
Tagliaro,Claudia Helena; Franco,Maria Helena Lartigau Pereira; Meincke,Werner; Silva,Gilberto.
Fourteen protein systems coded by 15 structural loci were typed by horizontal electrophoresis to determine possible associations betweem the protein phenotypes and productive traits in Landrace (N=109), Largo White (N= 116) and Duroe (N=57) pigs, reared in Southern Brazil. Signiticant associations between protein phenotypes and production traits were detected. The most consistent interaction were observed between two protein systems (phosphogluconate dehydrogenase - Pgd and Hemopexin -Hpx) and at least one of the four performance variables considered. In Duroc breed, the Pgd phenotypes were associated with daily weight gain (P < 0.01), feed conversion ratio (P < 0.01) and selection index (P < 0.001), while in Landrace significant associations were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pigs; Protein phenotypes; Production traits; Associations.
Ano: 1995 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781995000100012
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