Cluster analysis of lombok island local buffalo (Bubalus bubalis) based on Principle Component Analysis (PCA)

Abstract

The Preservation of buffalo cattle in North Lombok and Central Lombok regencies can be done through inventory activities and identification of cattle performance through analysis of morphological characters in order to determine the kinship relationships of buffalo. This study examines the grouping of local buffalo in Central Lombok and North Lombok based on morphological characters. The sample of this study consisted of 16 male and female buffaloes taken from both regions. One way anova analysis results on eight morphological characters of buffalo which include (1) body length, (2) shoulder height, (3) hip height, (4) chest circumference, (5) chest width, (6) head length, (7) head height, and (8) head width shows no difference in mean values of each character in the two observation areas. The results of PCA analysis revealed a map of buffalo morphology distribution which was divided into two groups, i.e. group 1 representing North Lombok buffalo located in quadrant III, while group 2 represented morphological mixtures of North Lombok and Central Lombok buffalo located in quadrant I, II, and IV. The results of the cluster analysis show that some buffalos from North Lombok has similarities with Central Lombok buffalo based on the eight morphological characters.