Multivariate analysis for morphological traits of the Hamra goat population in two regions of Morocco
- 1 December 2016
- journal article
- research article
- Published by Cambridge University Press (CUP) in Animal Genetic Resources/Ressources génétiques animales/Recursos genéticos animales
- Vol. 59, 55-62
- https://doi.org/10.1017/S2078633616000114
Abstract
Summary The goal of this study was to characterize the Hamra goat population and to determine if Hamra goats of Beni Arouss and Rommani regions belong to the same population. Eleven morphometric traits of 157 Hamra animals (94 from Beni Arouss and 63 from Rommani) were used for this study. Overall, heart girth, body length, height at withers (HaW), height at rump (HS), chest depth (ChD), pelvis width (PW), chest width (CW), cannon circumference, head length (HeL), head width (HeW) and horn length (HL) of Hamra goats averaged 81.3, 61.5, 64.8, 65.3, 40.9, 19.3, 20.2, 9.67, 28.0, 26.3 and 23.4 cm, respectively. The effect of region was significant only on HaW, PW, HeL, HeW and HL, indicating certain homogeneity among goats of the two regions. Moreover, the inter region variance component ranged from 0 percent (absence of variability) for HS, CW, ChD and ChD to 18.5 percent for HeL, suggesting that the variability of body measurements between Beni Arouss and Rommani regions is very low. The factor analysis revealed four factors, which accounted for 73.5 percent of the total variance. The most discriminant variables between the two populations were HeL, HeW, PW and CW. The Mahalanobis distance between the two populations was 1.197, suggesting that there was genetic exchange between the two populations. The discriminant analysis showed that 80.9 percent of Rommani and 50.0 percent of Beni Arouss individuals were classified into their respective population. Results obtained will help in developing improvement and preservation strategies for the Hamra goat population.Keywords
This publication has 11 references indexed in Scilit:
- Effect of some non-genetic factors on milk yield and composition of Draa indigenous goats under an intensive system of three kiddings in 2 yearsTropical Animal Health and Production, 2015
- Influence of farming system and production purpose on the morphostructure of Spanish goat breedsSpanish Journal of Agricultural Research, 2014
- Cluster evaluation of Brazilian and Moroccan goat populations using physical measurementsRevista Brasileira de Zootecnia, 2013
- Classification of four ovine breeds of southern peninsular zone of India: Morphometric study using classical discriminant function analysisSpringerPlus, 2013
- Differentiation between three Saudi goat types using Size-free CanonicalDiscriminant AnalysisEmirates Journal of Food and Agriculture, 2013
- Performances de reproduction et de production laitière des chèvres Draa au MarocRevue d’élevage et de médecine vétérinaire des pays tropicaux, 2010
- Age- and sex-dependent regression models for predicting the live weight of West African Dwarf goat from body measurementsTropical Animal Health and Production, 2009
- Spatial variation in goat populations from Benin as revealed by multivariate analysis of morphological traitsSmall Ruminant Research, 2007
- Phenotypic Characterization of Indigenous Tswana Goats and Sheep Breeds in Botswana: Continuous TraitsTropical Animal Health and Production, 2004
- Application of multifactorial discriminant analysis in the morphostructural differentiation of Andalusian caprine breedsSmall Ruminant Research, 1996