PRELIMINARY SCREENING ON NIGERIAN CHICKEN-TYPES FOR EXTINCTION PROBABILITY
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Date
2025
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Animal Science Association of Nigeria (ASAN).
Abstract
This study was conducted in Borno state to assess the extinction risk of sixty (60) 6-Nigerian indigenous chicken-types; normal feathered, frizzle feathered, naked neck, shank feathered, crested feathered and rose comb based on a range of socio-economic and genetic factors. The research employed data from 60 households and examined variables including population size (POS), changes in population over the last five years (CHA), disease control (DC), economic development (ECO), cultural importance (CUL), and conservation practices (CON). Genetic diversity was assessed using heamoglobin polymorphism. The estimated extinction probabilities for the genotypes calculated based on these factors revealed an overall extinction probability of 0.58 indicating a moderate to high risk of extinction. Frizzle feathered and naked neck chickens had the highest extinction risks (0.78 and 0.73) while shank feathered chicken had the lowest (0.28). Genetic analysis revealed varying levels of genetic distinctness between and among the chicken types, with the naked neck and normal feathered chickens showing the greatest genetic differentiation. These findings underscored the importance of targeted conservation efforts, including improved production systems, disease control, and strategic breeding programmes, to reduce extinction risks and preserve the genetic diversity of these Nigerian chicken-types. This result should be confirmed using advanced nucleic acid-based technique
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https://asan.org.ng/downloads/proceedings/asan-2025/ABBG/ABBG_0005_Corrected.pdf?utm_source=chatgpt.com