Discipline: Veterinary Medicine
To estimate the bodyweight of adult Labrador Retrievers, certain external body parameters such as-heart girth (HG), midriff girth (MG), flank girth (FG) height 1 (H2 distance from the point of the shoulder to the ground), height 2 (H2: distance from the point of the withers to the ground) and body length (BL) were measured from 103 (48 males and 55 females) adult Labrador Retrievers. The actual weight of the animals as measured using weighing scale was then correlated with the different body parameters. Irrespective of sex correlation analysts showed that the MG (r = 0.588) had the highest correlation to body weight followed by the HG (r = 0.538), FG (r = 0.434), H2(r = 0.318), BL (r = 0.2224) and H1(r = 0.155) Regression analysts was done w determine predictive equations for bodyweight. Simple and multiple regression models were prepared based on sex and combined totals. Generally, as the number of body parameters increased, the coefficient of determination (r2) also increased. The suggested predictive equation for normal body weight in this breed regardless of sex is Y = 5.156 + 0.34 MG (r2 = 0.311). This equation is only applicable for the range of values obtained in this study. Moreover, the reliability of this equation is only limited to adult Labrador Retriever, over 15 years of age with normal body weight.