Vohra V, Niranjan S K, Mishra A K, Jamuna V, Chopra A, Sharma Neelesh, Jeong Dong Kee
Dairy Cattle Breeding Division, National Dairy Research Institute, Karnal, Haryana 132001, India .
Division of Veterinary Medicine, Faculty of Veterinary Science & Animal Husbandry, Sher-E-Kashmir University of Agricultural Sciences & technology of Jammu, R.S. Pura, Jammu 181102, India .
Asian-Australas J Anim Sci. 2015 Mar;28(3):311-7. doi: 10.5713/ajas.14.0451.
Phenotypic characterization and body biometric in 13 traits (height at withers, body length, chest girth, paunch girth, ear length, tail length, length of tail up to switch, face length, face width, horn length, circumference of horn at base, distances between pin bone and hip bone) were recorded in 233 adult Gojri buffaloes from Punjab and Himachal Pradesh states of India. Traits were analysed by using varimax rotated principal component analysis (PCA) with Kaiser Normalization to explain body conformation. PCA revealed four components which explained about 70.9% of the total variation. First component described the general body conformation and explained 31.5% of total variation. It was represented by significant positive high loading of height at wither, body length, heart girth, face length and face width. The communality ranged from 0.83 (hip bone distance) to 0.45 (horn length) and unique factors ranged from 0.16 to 0.55 for all these 13 different biometric traits. Present study suggests that first principal component can be used in the evaluation and comparison of body conformation in buffaloes and thus provides an opportunity to distinguish between early and late maturing to adult, based on a small group of biometric traits to explain body conformation in adult buffaloes.
对来自印度旁遮普邦和喜马偕尔邦的233头成年戈杰里水牛的13个性状(鬐甲高度、体长、胸围、腹围、耳长、尾长、尾尖长度、脸长、脸宽、角长、角基部周长、坐骨结节与髋骨之间的距离)进行了表型特征分析和身体测量。采用具有凯泽归一化的方差最大化旋转主成分分析(PCA)对性状进行分析,以解释身体结构。PCA揭示了四个成分,它们解释了总变异的约70.9%。第一个成分描述了总体身体结构,解释了总变异的31.5%。它由鬐甲高度、体长、胸围、脸长和脸宽的显著正高负荷表示。对于所有这13个不同的身体测量性状,共同度范围从0.83(髋骨距离)到0.45(角长),独特因子范围从0.16到0.55。本研究表明,第一主成分可用于评估和比较水牛的身体结构,从而提供了一个机会,基于一小组身体测量性状来区分成年水牛的早熟和晚熟,以解释成年水牛的身体结构。