Geographical assessment of body measurements and qualitative traits in West African cattle

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• 作者：Amadou Traoré ; Delphin Oloronto Koudandé…
• 关键词：Linear measurements ; Qualitative traits ; Cattle breeds ; Geographical patterns of variation
• 刊名：Tropical Animal Health and Production
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：47
• 期：8
• 页码：1505-1513
• 全文大小：618 KB
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  Traoré, A., álvarez, I., Tambourá, H.H., Fernández, I., Kaboré, A., Royo
• 作者单位：Amadou Traoré (1)
  Delphin Oloronto Koudandé (2)
  Iván Fernández (3)
  Albert Soudré (4)
  Víctor Granda (5)
  Isabel álvarez (3)
  Siaka Diarra (6)
  Fousseyni Diarra (6)
  Adama Kaboré (1)
  Moumouni Sanou (1)
  Hamidou Hamadou Tamboura (1)
  Félix Goyache (3)
  
  1. INERA, 04 BP 8645, Ouagadougou 04, Burkina Faso
  2. INRAB Benin, 01 BP 884 RP, Cotonou, Benin
  3. SERIDA-Deva, Camino de Rioseco 1225, E-33394, Deva-Gijón, Asturias, Spain
  4. Université de Koudougou, BP 376, Koudougou, Burkina Faso
  5. Fundación CETEMAS, Finca Experimental La Mata s/n, E-33820, Grado, Asturias, Spain
  6. IPR-IFRA, BP 06, Koulikoro, Bamako, Mali
  
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Veterinary medicine
  Zoology
  
• 出版者：Springer Netherlands
• ISSN：1573-7438

文摘

A total of 1015 adult cows belonging to nine West African cattle breeds were assessed for 16 body measurements and 18 qualitative traits to ascertain the existence of geographical patterns of variation. Sampling was carried out in 29 different provinces of Mali, Burkina Faso and Benin. For body measurements, taurine breeds took lower average values than the zebu breeds. Sanga cattle took intermediate values. Qualitative traits did not allow to differentiate among cattle groups (taurine, zebu or sanga) or breeds. Principal component analysis identified two factors explaining 56.4 and 9.2 % of the variance for body measurements, respectively. Two correspondence analysis dimensions computed on qualitative traits explained a small proportion of the variability (20.8 and 13.5 %, respectively). Contour plots were constructed using the eigenvalues computed for each individual and either factor or dimension identified; confidence regions calculated confirmed that body measurements clearly differentiated zebu and taurine cattle breeds while qualitative traits did not. Factor 1 was projected on a geographical map, using provinces as nodes, to assess breed-free variation for body measurements. A pattern of continuous variation from the Sahel area southwards was identified. Probably, breeding decisions promoting the crosses between zebu-like and taurine cattle are underlying this geographical pattern of variation. The implementation of selection strategies aiming at the increase of the productivity of native West African taurine cattle breeds while avoiding looses in trypanotolerant ability would be highly advisable. Keywords Linear measurements Qualitative traits Cattle breeds Geographical patterns of variation