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  • Title: Polymorphism at the beta-adrenergic receptor (ADRB3) locus of Merino sheep and its association with lamb mortality.
    Author: Forrest RH, Hickford JG, Wynyard J, Merrick N, Hogan A, Frampton C.
    Journal: Anim Genet; 2006 Oct; 37(5):465-8. PubMed ID: 16978175.
    Abstract:
    Beta3-adrenergic receptors are predominantly found on the surface of adipocytes and are major mediators of the lipolytic and thermogenic effects of high catecholamine concentrations. Recently, variation in the ovine beta3-adrenergic receptor (ADRB3) gene has been reported to be associated with lamb survival. In this study, polymerase chain reaction-single strand conformational polymorphism analysis of part of the ADRB3 intron was used to genotype 4488 Merino lambs born at 10 farms throughout the South Island of New Zealand. Univariate and multivariate odds ratios for each allele revealed a significant association of the E allele with cdd survival and of the D allele with mortality. This variation at the ADRB3 locus may assist in the genetic selection for survival in Merino sheep.
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