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Time trends in productivity and genetic parameters in two strains of ducks



Time trends in productivity and genetic parameters in two strains of ducks



6th International Symposium on Actual Problems of Avian Genetics: 33-41



The response to selection for egg production in 1 strain (P44) and body weight in a 2nd strain (P55) of Pekin ducks from 1964 to 1982 was investigated. Body weight at 4 wk in the selected strains increased by an av. of 200 g. Egg production in strain P44 increased from 84 eggs in 1966 to 120 eggs in 1982; in the other strain, it increased from 77 in 1967 to 99 in 1982.

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Accession: 001719679

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