Cluster evaluation of Brazilian and Moroccan goat populations using physical measurements

Pires, Luanna Chácara; Machado, Théa Mírian Medeiros; Araújo, Adriana Mello de; Silva, João Batista Lopes da; Euclydes, Ricardo Frederico; Costa, Márcio da Silva; Olson, T.

doi:10.1590/s1516-35982013001000004

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…As medidas corporais consideradas nas análises de agrupamento foram AC, AP, CC, CO, AG, CT, CCAB, LR, LCAB, LIL, LIS, CGA, PCA, TCH e DHC que apresentaram fraca multicolinearidade (NC<100) na amostra. Resultado semelhante foi encontrado em rebanhos espanhóis de caprinos nativos (Herrera et al 1996, p. 46) em que a profundidade torácica não foi discriminante, não devendo, portanto, ser considerada na elaboração de estudos de diferenças raciais, e também por Pires et al (2013), com caprinos brasileiros e marroquinos.…”

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Caracterização Biométrica dos Caprinos da República de Cabo Verde

Pires

Machado

Fonseca³

et al. 2019

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Objetivou-se discernir populações caprinas de cinco ilhas da República de Cabo Verde (n=533) por meio de dados biométricos e análises estatísticas. Foram avaliadas 16 características de fêmeas adultas, através da estatística descritiva simples, análise de variância, teste de multicolinearidade, distância generalizada de Mahalanobis (D²) e algoritmo UPGMA (Unweighted Pair Group Method Arithmetic Mean). Após o teste de multicolinearidade foi identificada e descartada a variável profundidade torácica. As D² foram calculadas com base nas 15 medidas biométricas. O maior valor da D² foi entre as populações das ilhas do Fogo e São Nicolau (22,73), e a menor D² foi entre Santo Antão e São Vicente (3,71). O dendrograma a partir de 15 variáveis em cinco populações colocou as cabras da ilha de Fogo em ramo a parte das demais. Agruparam-se num ramo as cabras das ilhas de Santo Antão e São Vicente. Este resultado está de acordo com a distância geográfica entre as ilhas de Cabo Verde e o histórico recente de intercâmbio de animais entre elas.

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Section: Acunclassified

Caracterização Biométrica dos Caprinos da República de Cabo Verde

Pires

Machado

Fonseca³

et al. 2019

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“…It will provide more information to the other clustering methods i.e. heatmap or dendrogram since it could identify the optimum number of clusters (Pires et al 2013).…”

Section: Cluster Analysismentioning

confidence: 99%

Multivariate analysis unravels genetic diversity and relationship between agronomic traits, protein, and dietary fiber in yardlong bean (Vigna unguiculata subsp. sesquipedalis Verdc.)

et al. 2020

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Abstract. Widyawan MB, Hasanah A, Taryono, Alam T, Sayekti RS, Pramana AAC, Wulandari RA. 2020. Multivariate analysis unravels genetic diversity and relationship between agronomic traits, protein, and dietary fiber in yardlong bean (Vigna unguiculata subsp. sesquipedalis Verdc.). Biodiversitas 21: 5662-5671. Yardlong bean (Vigna unguiculata subsp. sesquipedalis Verdc.) is a vegetable legume that possesses the highest amount of protein and total dietary fiber (TDF) content among other vegetables. However, protein and TDF content diversity are found among yardlong bean genotypes. Genetic improvement to produce cultivars with high yield and improved nutritional content is required. This study aimed to analyze genetic diversity and identify the relationship between important agronomic traits from 21 yardlong bean genotypes assessed by multivariate statistical analysis. The experiment was arranged in alpha design with three replicates, each consist of six blocks. Six pod-related important agronomic traits, protein, and TDF content were observed in this study. Total pod weight, pod weight, and pod length were found to be negatively correlated with protein and TDF content based on correlation and principal component analysis (PCA). Although negatively correlated, several variables possess a large and positive direct effect on protein and TDF content, such as the number of pod, pod weight, and days to flower. D2 analysis and Tocher’s method classify genotypes used in this study into five clusters with diverse traits value. Information from this study laid a foundation for the improvement of important agronomic traits as well as nutritional content in yardlong bean.

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“…For this reason, the phenotypic information could be serve as a basis for designing appropriate conservation, breeding and selection strategies for creole goats (Yakubu & Ibrahim, 2011). In this regard, several authors point out that the use of multivariate analysis tools can be especially useful for describing local or long-lived animal populations (Hernández Zepeda et al, 2002;Deza et al, 2003;Zaitoun et al, 2004;Prieto et al, 2006;Chacón et al;Pires et al, 2013;Gómez;Abdala et al, 2014); this could allow to differentiate them from other populations, generating racial standards (Lanari et al;Revidatti et al, 2007Revidatti et al, , 2013 and allowing them to be managed as specific genetic resources (Gómez;Abdala et al;Parés-Casanova & Kucherova, 2015).…”

Section: Introductionmentioning

confidence: 99%

Population Differentiation in the Body Architecture of Creole Goats in the Semi Arid Region of Chile

2019

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DE LA BARRA, R.; CARVAJAL, A. M. & MARTÍNEZ, M. E. Population differentiation in the body architecture of creole goats in the semi arid region of Chile. Int. J. Morphol., 37(2):690-693, 2019. SUMMARY:The present study aimed to assess the degree of body architecture differentiation between Creole goats, two introduced breeds and their hybrids in semi arid areas of the north of Chile. The study was carried out between 2012 and 2015. One hundred and eighty five adult female goats belonging to 17 herds from the Coquimbo region were used. Ten animals of the Saanen breed and 10 animals of the Anglo nubian breed belonging to two hatcheries and 165 Creole and hybrid goats belonging to small farmers were measured. The animals were categorized into pure breed (20), hybrid (52) and creole (113). Eight body measurements were taken: head length (HL), head width (HW), longitudinal diameter (LD), bicostal diameter (BD), dorsal-sternal diameter (DSD), rump width (RW), rump length (RL) and whithers height (WH). Data were submitted to principal component analysis (PCA) and Fisher LSD test, using the XLSTAT-Pro Statistic software. The analysis indicated the existence of homogeneity subsets within the population, without a common architectural pattern for the entire population. The Creole biotype showed a smaller body architecture than the two breeds and hybrids with which it was compared, which could be an adaptative result. It is possible to assess that the Creole biotype has a differentiated body architecture with respect to the introduced goat breeds and the animals hybridized in different proportions. In addittion, it was observed that Creole goats maintain distinctive characteristics and they are differentiable even of the individuals with different degrees of hybridization.

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Cluster evaluation of Brazilian and Moroccan goat populations using physical measurements

Cited by 8 publications

References 20 publications

Caracterização Biométrica dos Caprinos da República de Cabo Verde

Caracterização Biométrica dos Caprinos da República de Cabo Verde

Multivariate analysis unravels genetic diversity and relationship between agronomic traits, protein, and dietary fiber in yardlong bean (Vigna unguiculata subsp. sesquipedalis Verdc.)

Population Differentiation in the Body Architecture of Creole Goats in the Semi Arid Region of Chile

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