Genetic relations between natural antibodies binding keyhole limpet hemocyanin and production traits in a purebred layer chicken line

Poultry Science
S A S van der KleinH Bovenhuis

Abstract

Natural antibodies (NAb) are an important component of the first line of immune defense. Selective breeding for enhanced NAb levels in chickens may improve general disease resistance. It is unknown what the consequences of selection for NAb will be on the productive performance of laying hens. In this paper we describe the genetic relations between NAb titers binding keyhole limpet hemocyanin at 19 wk age and production traits in a white purebred leghorn chicken line observed in several time periods. A linear animal model was used to estimate (co)variance components, heritabilities, and correlations. Negative genetic correlations were found between egg weight and NAb titers, and between egg breaking strength and NAb titers. Positive genetic correlations were found between the feed conversion ratio (consumed feed/egg mass produced) and NAb titers, and egg production and NAb titers. Negative phenotypic correlations were found between body weight and NAb titers, between egg weight and NAb titers, and between egg breaking strength and NAb titers. Positive phenotypic correlations were found between egg production and NAb titers, and feed conversion ratio and NAb titers. In general, phenotypic correlations were more often significant...Continue Reading

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Citations

Jan 26, 2016·Scandinavian Journal of Immunology·Stratis C Avrameas
Jul 21, 2016·Veterinary Immunology and Immunopathology·Stefano CecchiniAnna Rocchina Caputo
May 23, 2019·British Poultry Science·M M FathiO K Abou-Emera

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