Discipline: Veterinary Medicine
This study reports a method of estimating body weight in Philippine domestic cats using external body measurements. One hundred adult Philippine domestic cats (57 queens and 43 toms) were surveyed for this study. The bodyweights and some external body measurements, namely: the heart girth, the midriff, the flank girth, the height at withers, the height at rump, the body length 1 (from the atlanto-occipital point to the base of the tail) and the body length 2 (from the point of the shoulder to the ischiatic tuberosity) were taken and then subjected to correlation and regression analyses. The correlation coefficients showed that for the whole population, as well as for the female and male populations, the heart girth was the greatest single bodyweight predictor with r=0.863, r=0.851, and r=0.869, respectively. It was also shown that all external body parameters were positively correlated to the bodyweight. Predictive equations were derived using simple and multiple regression analysis. The heart girth was used for the simple predictive equations and the r2 values were: 0.745 for the whole population; 0.725 for the female population, and 0.755 for the male population. The midriff girth along with the heart girth were used to construct the dual regression equation for the whole population and the female population resulting to an increase in the r2 values to 0.782 and 0.786, respectively. In the male, however, the height at the withers was found to improve the r2 of the dual equation together with the heart girth to 0.838. The study further showed that the multiple predictive equation for the whole population using the heart girth, midriff girth and height at the rump resulted in a higher r2 of 0.808. Thus, in the absence of a weighing scale, the bodyweight of the adult Philippine domestic cat may be estimated through external body measurements using the predictive equations developed from this study.