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Varimax Rotated Principal Component Analysis of Adaptability Traits in Haringhata Black Chickens Raised Under Intensive Management System

Saikhom R. Sahoo A. K. Taraphder S. Pan S. Sarkar U. Ghosh P. R. Bhattacharyya D. Baidya S.
Vol 8(6), 139-144

Principal Component Analysis was carried out on Haringhata Black Chickens to identify the best component for explaining the variability of adaptability trait of birds at 18th week of age. The descriptive statistics showed that the mean body measurements were 20.15±0.20 cm, 69.14±0.41 cm, 17.32±0.34 cm, 5.25±0.13 cm, 8.77±0.14 cm, 3.64±0.10 cm and 13.11±0.18 cm for wing length, wing span, tail length, central toe length, shank length, shank diameter and thigh length, respectively. Highly significant (P<0.01) positive correlations were recorded for all the morphometric traits studied. The highest correlation was obtained between wing length and thigh length (r = 0.85) while correlation between shank diameter and tail length (r = 0.29) was observed to be the lowest. Principal component analysis revealed that First Principal Component had highly correlated with thigh length (0.94), wing length (0.93), shank length (0.92), wing span (0.91) and shank diameter (0.84). This component explained maximum variability of about 76.02 % of the total variation in the original variables for adaptability and may be used as selection criteria for describing the adaptability of indigenous Haringhata Black chickens.

Keywords : Haringhata Black Chicken Morphometric Traits Principal Component Analysis

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