African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Using morphometric traits for live body weight estimation and multivariate analysis in Central Highland and Woyto-Guji Goat Breeds, Ethiopia

Netsanet Zergaw
  • Netsanet Zergaw
  • Ethiopian Institute of Agricultural Research, Addis Ababa, Ethiopia.
  • Google Scholar
Tadelle Dessie
  • Tadelle Dessie
  • International Livestock Research Institute, Addis Ababa, Ethiopia.
  • Google Scholar
Kefelegn Kebede
  • Kefelegn Kebede
  • Haramaya University, Dire Dawa, Ethiopia.
  • Google Scholar


  •  Received: 30 August 2016
  •  Accepted: 14 October 2016
  •  Published: 13 April 2017

Abstract

The study was conducted to differentiate the Woyto-Guji and Central Highland goat breeds of Ethiopia and derive the most accurate linear regression equation for live body weight prediction. Morphological measurements were taken on randomly selected 531 adult female goats (263 from Woyto-Guji and 268 from Central Highland). Positive and highly significant (P<0.001) correlations were observed between body weight and most independent body measurement variables in both breeds. The highest relationship between chest girth and body weight were illustrated in both breeds (r=0.85 for Woyto-Guji and r=0.82 for Central Highland). The multiple regressions found five parameters to be significant (P<0.05) for Woyto-Guji (chest girth, body length, pelvic width, chest width and ramp length) and Central Highland (chest girth, body length, ramp length, horn and ear length) with R2 values of 84% and 79%, respectively. Body weight, body length, height at wither, chest width, ramp length, pelvic width, horn length and ear length had a significant (P<0.15) discriminating power on the breeds. Nearest neighbor discriminating function analysis shows that 93.23% of Woyto-Guji and 92.96% of Central Highland breeds were classified into their source population. The morphological variations obtained in this study should be consolidated with more evidence drawn from genetic analysis.

 

Key words: Central Highland, goat, multivariate, morphometric traits, Woyto-Guji.