EVALUATION OF BODY COMPOSITION USING UREA DILUTION AND SLAUGHTER TECHNIQUE OF GRO\V1NG PRIANGAN SHEEP

Abstract

his study aimed to evaluate the measurement in vivo body composition using urea
space (US) and slaughter technique (ST) method. Correlation were described between urea space, total body water, fat and protein in growing Priangan sheep and also results from US and ST were compared. Six growing Priangan sheep were fed with commercial concentrate and grazed on the pasture during a half day. Prior to and the last day of the experiment, body composition was measured by the urea space technique and after that animals were slaughtered and analyzed for water, fat and protein contents. Results showed that there were no significance
difference of body water, fat and protein as percentage of empty body weight (EBW) on both US and ST. The data of US and ST were 68.64 and 65.87 for body water; 9.78 and 9.85 for body fat; 16.87 and 16.53 for body protein, respectively. Body fat using US was underestimate of 0.7%, while body water and protein were overestimate 4.02 and 2.01%, respectively. The correlation between US and body compositions as percentage of EBW were developed as following the equations Z
Water = 16.519+ 1.0465 US, wit.h r= 0.95
Fat = 23.837 - 0.2965 US, with r = - 0.98
Protein = 6.714 + 0.2082 US, with r = 0.96
The correlation between body water and body fat and protein using ST method, as percentage of EBW were I
Fat = 27.68 - 0.270 body water, with r = - 0.96
Protein = 4.42 + 0.184 body water, with r = 0.91
lt was concluded that US was a good method and can be applied for estimating body composition of growing Priangan sheep using a certain factors.