Direct and Correlated Responses to Selection for Age at Maturity in the Fowl
نویسندگان
چکیده
منابع مشابه
Selection for egg production and correlated responses in the fowl.
HE effectiveness of selection for genetic improvement of egg production in the fowl remains a controversial issue. Mass selection on annual egg records has long been regarded as ineffective as demonstrated by the early work of PEARL (1915), while selection based on family records and progeny testing has seemed to be the key to success as demonstrated by the long-time selection experiments of DE...
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Hemolymph juvenile hormone esterase (JHE) activity on the third day of the last stadium in the cricket, Gryllus assirnilis, exhibited a significant response to selection in each of six replicate lines. Mean realized heritability was 0.26 t 0.04. The response was due to changes in whole-organism enzyme activity as well as to changes in the proportion of enzyme allocated to the hemolymph compartm...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1981
ISSN: 0032-5791
DOI: 10.3382/ps.0600289