Method for improving egg‐shell strength by selection 1 2
1979; Taylor & Francis; Volume: 20; Issue: 3 Linguagem: Inglês
10.1080/00071667908416581
ISSN1466-1799
AutoresV.A. GARWOOD, P.C. Lowe, C. G. Haugh,
Tópico(s)Genetic Mapping and Diversity in Plants and Animals
Resumo1. A method was developed for measuring the rate of egg breakage under random impact loading of samples from sire families. 2. Bidirectional selection, based upon sire‐family means, was made over a single generation using egg breakage rate as the basis of selection: significant differences were obtained after one generation. 3. Heritability of the rate of egg breakage was estimated as 0.48 + 0.05. Notes Journal paper no. 7126. Purdue University Agricultural Experiment Station. This investigation was conducted as a portion of the cooperative research of the NC‐89 Regional Poultry Breeding Project entitled “Nature and Utilization of Genetic Variation Influencing Economic Traits in Poultry “. Mention of trade name, proprietary product, or specific equipment does not constitute a guarantee or warranty by the US Department of Agriculture and does not imply its approval to the exclusion of other products that may be suitable.
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