Landmark Research Journals Of Agriculture and Soil Science 
August 2017 Vol. 4(1), pp. 001-006  
Copyright © 2017 Landmark Research Journals

Full Length Research Paper

 

Discriminant Analysis of Sexual Dimorphism in Zoometrical Characters of Adult Local Chicken in the Tropical Forest Zone

Fajemilehin, Samuel Oladipo Kolawole

 

Department of Animal Production and Health Sciences Faculty of Agricultural Sciences

Ekiti State University, Ado-Ekiti, Nigeria

*Corresponding Author's Email: dipofajemilehin@yahoo.com

 

Accepted 18 June, 2017

ABSTRACT

Measurement of some zoometrical traits and indices in male and female local chickens were undertaken as means of differentiation. Data on body weight (BW), breast circumference (BC), wing span (WS), Ornithological measurement (OM), total leg length (TLL), stockiness (STK), massiveness (MAS), long-leggedness (LLG) and condition (CI) were collected on 161 adult local chickens comprising of 86 cocks and 75 hens reared under village scavenging conditions in a cross-sectional survey. The hens showed significantly (p<0.05) higher OM and STK (72 versus 67%) while cocks were higher (p<0.05) in BW, WS, BC, TLK, MAS, LLG and CI. Low, moderate and high positive and negative coefficients of correlation (r) were recorded among the body parameters in both sexes. Highest r was observed between WS and TLL (r=-0.920; p<0.01) in hens and between TLL and BC (r=0.362; p<0.01) in cocks. In the indices highest r was recorded between BW and CI in hens and between BW and CI in cocks. The discriminating power of the variables was highest in TLL, chronologically followed by BW, WL and BL. The reduction in the number of measurements saves time and energy required to distinguish between the sexes. 

Keywords: Cocks, cross-sectional survey, hens, indices, zoometrical traits .