CANONICAL DISCRIMINANT ANALYSIS OF THREE NIGERIAN MULTIPLE-PURPOSE CHICKENS AND MEAT-TYPE BROILER
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Date
2025-09-30
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Trakia Journal of Sciences
Abstract
PURPOSE: Canonical Discriminant Analysis was conducted on body weight and morphological
characteristics of three Nigerian indigenous (normal feathered, naked neck, frizzle feathered) and Ross
308 broiler chickens reared at Maiduguri, Borno State, Nigeria using body weight, shank length, shank
circumference, keel length, back length, thigh length and shank diameter. METHODS: Data were
subjected to Canonical Discriminant analysis with chicken type as separation criterion using Statistical
Packages for Social Sciences (SPSS) version 20.0. RESULTS: The descriptive statistics indicated
superiority of Ross 308 over the indigenous types. Naked neck chicken was distinguished from other local
types in most morphological traits. The first Canonical function accounted for largest amount between
group variability (98.4%), second and third functions accounted for 1.0% and 0.6%. Back length, keel
length and thigh length contributed significantly to total variance. The overall percentage of correctly
classified cases was 75.8%. The proportion of individual chickens correctly classified in to their original
group was 100% in the Ross 308; 76.7% in naked neck, 63.3% in each of normal and frizzle feathered.
Overlap observed among indigenous chickens suggests genetic admixture. The Dendrogram
distinguished Ross 308, an exotic from the indigenous chickens. Frizzle feathered was most distant among
the indigenous strains while normal and naked neck chickens clustered together. CONCLUSIONS: The
Ross 308 broiler chicken was superior to the indigenous chickens in body weight and morphological traits
while naked neck was superior to other local types. This suggesting naked neck to be crossbred with Ross
to develop indigenous broiler-types.
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https://trakia-uni.bg