ESTIMATION OF HERITABILITY AND CORRELATION OF ECONOMIC TRAITS IN IWP STRAIN OF WHITE LEGHORN CHICKEN

Article Id: ARCC2386 | Page : 257-260
Citation :- ESTIMATION OF HERITABILITY AND CORRELATION OF ECONOMIC TRAITS IN IWP STRAIN OF WHITE LEGHORN CHICKEN.Indian Journal Of Animal Research.2008.(42):257-260
P. Veeramani, K. Narayanankutty and R. Richard Churchil
Address : AIRP on Poultry Improvement, College of Veterinary and Animal Sciences, Mannuthy, Kerala-680 651, India

Abstract

The data on age at first egg (ASM), 16, 40 and 64 week body weight (Bw16, Bw40, Bw64), 28
and 40 week egg weight (Ew 28, Ew40) and egg production up to 40 and 64 weeks age (En40, En64)
pertaining to 20th generation of IWP strain from 2112 progenies belonging to 50 sires and 300 dam
formed the basis of this study. The mean values for age at first egg (ASM), body weights (Bw 16,
Bw40 and Bw64), egg weights (Ew28, Ew40) and egg production up to 40 and 64 weeks age (En40,
En64) recorded were 137 days, 1.131 kg, 1.651 kg, 1.712kg, 50.42 g, 54.01g, 121.21and 246.40
eggs respectively. The Heritabilities of ASM, egg weight and egg production was low to moderate.
Higher heritability was recorded for body weight at various intervals. Positive correlation observed
between both egg weight characters on genetic and phenotypic scale as well as between body
weight characters. Negative correlation was noticed between ASM and Egg production on both
genetic and phenotypic scale. Negative correlation was noticed between Egg weight and Egg
production on both genetic and phenotypic scale.

Keywords

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