Correlation and regression analysis of the body measurements of the Doro Ncanga Buffalo (Bubalus bubalis) reared extensively in the Savanna of Mount Tambora Dompu Regency, Indonesia

Abstract

The objectives of the present study were to examine the correlation and regression of body measurements of the Doro Ncanga buffaloes in the savanna of Mount Tambora Dompu Regency, Indonesia. A total of 339 animals were used in this study. In female, body weight (BW) was found to be significantly (p<0.05) correlated with body length (BL), the degree of correlation increased from 0-6 (r=0.319) to 13-24 months (r=0.394), thereafter decreased at >36 months (r=0.160). The BW was not significantly correlated with height at wither (HW) for all 5 age groups. However, BW and heart girth (HG) were highly correlated (p<0.01) between age groups 0-6 (r=0.967) and >36 months (r=0.978). The BL was significantly (p<0.01) correlated with HW from 0-6 to 13-24 months of age, except for 25-36 months of age. The correlation between BL and HG was highly significant (p<0.01) at 0-6 (r=0.427) and 13-24 (0.371) months of age, then decreased with the increase of age. The HW had no strong correlation with HG at all groups. The regression model of BW changes with HG was predictable with R 2 values ranged from 0.896 to 0.957. In male, BW had a strong correlations with HG for age groups 0-6 (r=0.979) and 7-12 months (r=0.972). The BL and HW were not highly correlated with BW in all groups. However, BW was significantly (p<0.01) correlated with HG for age groups 0-6 (r=0.979) and 7-12 months (r=0.972). Their R 2 values were 0.958 and 0.945, respectively. A highly significant (p<0.01) correlations were also observed between BL and HW for age groups 0-6 months (r=0.677) and 7-12 months (0.462). The R 2 values were 0.458 and 0.214 for the two different age groups, respectively. The estimates of the coefficient of determinations and predictive equations show that HG alone could be used to predict BW of female and male Doro Ncanga buffalo at different age groups.

Use of Multivariate Adaptive Regression Splines Algorithm to Predict Body Weight from Body Measurements of Anatolian buffaloes in Türkiye

“…Male Anatolian buffaloes had higher means for CC, SD, BW and KG in comparison to female buffaloes ( Table 1 ) ( p < 0.01). Husni et al [ 27 ] determined the optimal regression model with BW, BL, HW and HG for the Doro Ncanga buffalo. They reported that the correlation between BW and BL, HW and HG was 0.319, 0.071 and 0.967, respectively.…”

Canonical Discriminant Analysis of Morphometric Variables of Swamp Buffalo (Bubalus bubalis) in Kalimantan Island

“…In a similar population group, the average CG in buffaloes from SK according to Anggraeni et al (2011) was lower than in this study. In buffalo, the CG measurement has a high correlation with body weight (Dhillod et al 2017;Husni et al 2018;Eriani et al 2019). Murni et al (2020) obtained nine discriminant variables (with five functions) from eleven morphometrical measurements in buffaloes from Banten (Indonesia) with rc value of 0.81 (function 1).…”