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Molecular marker heterozygosities and genetic distances as correlates of production traits in F1 bovine crosses Genet. Mol. Biol.
Tambasco-Talhari,Daniella; Alencar,Maurício Mello de; Paz,Cláudia Cristina Paro de; Cruz,Geraldo Maria da; Rodrigues,Armando de Andrade; Packer,Irineu Umberto; Coutinho,Luiz Lehmann; Regitano,Luciana Correia de Almeida.
Several studies have investigated the relationship between heterozygosity, genetic distance and production traits. The objective of the present study was to evaluate the influence of the degree of heterozygosity and genetic distance on growth, carcass and reproductive related features in F1 bovine crosses. We tested 10 polymorphic markers in 330 purebred cattle (Nelore, Canchim, Aberdeen Angus and Simental) and 256 crossbred cattle belonging to four crossbred groups. Individual heterozygosities (Hi) and multilocus genetic similarity (Dm) were estimated and used in correlation analysis against individual phenotypic measurements. Significant (p < 0.05) Hi effects occurred for birth weight, 15 to 18 month weight, hot carcass weight and longissimus rib eye...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bovine crosses; Molecular markers; Heterozygosity; Genetic distance; Production traits.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200007
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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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