International Journal of
Genetics and Molecular Biology

  • Abbreviation: Int. J. Genet. Mol. Biol.
  • Language: English
  • ISSN: 2006-9863
  • DOI: 10.5897/IJGMB
  • Start Year: 2009
  • Published Articles: 115

Full Length Research Paper

Primary morphological characterization of West African dwarf (Djallonké) ewes from Côte d’Ivoire based on qualitative and quantitative traits

N’Goran K. Edouard
  • N’Goran K. Edouard
  • Département Biochimie-Génétique et Département de Biologie Animale, UFR Sciences Biologiques, Université Peleforo Gon Coulibaly, BP 1328 Korhogo, Côte d’Ivoire.
  • Google Scholar
Kouadja G. Severin
  • Kouadja G. Severin
  • Station d’Elevage du Centre National de Recherche Agronomique(CNRA), 01 BP 633 Bouaké 01, Côte d’Ivoire.
  • Google Scholar
Kouassi N. Cyrille
  • Kouassi N. Cyrille
  • Station d’Elevage du Centre National de Recherche Agronomique(CNRA), 01 BP 633 Bouaké 01, Côte d’Ivoire.
  • Google Scholar
Loukou N. Etienne
  • Loukou N. Etienne
  • Département Biochimie-Génétique et Département de Biologie Animale, UFR Sciences Biologiques, Université Peleforo Gon Coulibaly, BP 1328 Korhogo, Côte d’Ivoire.
  • Google Scholar
Eka Jean Yves
  • Eka Jean Yves
  • Département Biochimie-Génétique et Département de Biologie Animale, UFR Sciences Biologiques, Université Peleforo Gon Coulibaly, BP 1328 Korhogo, Côte d’Ivoire.
  • Google Scholar
Dayo G. K. Charles
  • Dayo G. K. Charles
  • Centre International de Recherche-Développement sur l’Élevage en zone Subhumide (CIRDES), 01 BP 454 Bobo Dioulasso 01, Burkina Faso.
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Sangare Mamadou
  • Sangare Mamadou
  • Centre International de Recherche-Développement sur l’Élevage en zone Subhumide (CIRDES), 01 BP 454 Bobo Dioulasso 01, Burkina Faso.
  • Google Scholar
Yapi-Gnaore C. Valentine
  • Yapi-Gnaore C. Valentine
  • Centre International de Recherche-Développement sur l’Élevage en zone Subhumide (CIRDES), 01 BP 454 Bobo Dioulasso 01, Burkina Faso.
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  •  Received: 15 October 2018
  •  Accepted: 21 May 2019
  •  Published: 31 July 2019

Abstract

Phenotypic characterization is used to identify and document diversity within and between distinct breeds, based on their observable attributes. Study to assess the body characteristics and variability of 204 Djallonké (West African dwarf) ewes was conducted in three agro-ecological zones (central, western and northern) of Côte d’Ivoire, from November 2016 to April 2017. Animals were described using visual appreciation of the body hair coat (colour type and pattern), hair length, ear orientation, tail type and the facial (head) profile. The linear body measurements, such as ear and tail length, muzzle length and width, height at wither, chest depth, and chest girth were also described. The data collected were subjected to principal component (PCA) and discriminant analysis. Results showed that the most common Djallonké ewes had erected ear (87.25%), thin tail and straight face. The dominant colour pattern of the body hair coat was patchy (64.22%) followed by plain (32.84%) and spotted (2.94%). The agro-ecological zone had a significant (p˂0.01) effect on some linear body measurements (muzzle length, ear length and height wither). Based on PCA performed with all the above morphological variabilities, we were able to segregate the Djallonké ewes’ into three clusters (I, II and III). Discriminant analysis revealed that 76.27% sheep of cluster I, 92.80% sheep of cluster II and 90% sheep of cluster III were correctly classified in their original cluster. This result indicated that Ivorian Djallonké sheep population comprises of three well characterized morphological types of animals. This information could constitute a basis for further characterization and development of conservation strategies for Djallonké sheep breeding in Côte d’Ivoire.

 

Key words: Local, sheep, breed, morphological, variability, West Africa.