GENETIC STUDY ON IMPORTANT ECONOMIC TRAITS IN TWO STRAINS OF WHITE LEGHORN CHICKEN”
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Date
2012
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Anand Agricultural University, Anand
Abstract
The present study was undertaken to investigate inheritance and association of
various economic traits in IWN and IWP strains of White Leghorn which has completed
9 generation of Osborn Index selection for increasing egg production. A total of 849 and
862 pullets of IWN and IWP strain, respectively were generated by mating of 50 sires
and 300 dams of each of the two strains and were maintained under All India
Coordinated Research Project on Poultry Breeding at the Department of Poultry Science,
College of Veterinary Science and Animal husbandry, Anand Agricultural University,
Anand, Gujarat. Various traits like body weight (BW) in kg at 16, 20, 28 and 40 week of
age, age at first egg (AFE) in days, total egg number up to 40 week of age (TEN40), egg
weight (EW) in g at 24,28,32,36 and 40 week of age, egg mass (EM) produced at
24,28,32,36 and 40 week of age and total egg mass produced up to 40 week (TEM40) in
kg were measured and utilized for estimation of Least Squares Means (LSMs),
heritability (h2) and genetic and phenotypic correlations.
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Keywords
Poultry Science, Study