Twenty sheep wethers(ten Polwarth  cross and ten Baruwal) were used to study the load carrying ability ofcrossbred  and native sheep breed in Jumla, Nepal.   The average age of the Polwarth cross and Baruwal were 4122and 481.8 days  respectively. The average body weights were 28.59 kg. for Polwarth crosses and 23.0 kg. for Baruwal.Both  the breed of animal were divided  into two groups  containing 5 animals in each group assigning 15 and 20%load equivalent to their body weight.  Barley grain were filled in the harness and animal were drived pre-determineddistance of  13.6 Jan. daily from  6:00AM to 1:00 PM.  The rectal temperature and the respiration rate was measured and statistically analyzed to compare the stress caused by the load. The result indicated that out of the two physiological reaction measured, respiration rate was the mostsensitive to the load carried. Among the breed Polwarth cross had higher respiratory rate showing more stressed . The suit indicated that with the percent of load carried (i.e. 15% and 20%) the was no significantdifferent of the load carrying ability of both crosses and indigenous sheep breed.

Twenty sheep wethers(ten Polwarth  cross and ten Baruwal) were used to study the load carrying ability ofcrossbred  and native sheep breed in Jumla, Nepal.   The average age of the Polwarth cross and Baruwal were 4122and 481.8 days  respectively. The average body weights were 28.59 kg. for Polwarth crosses and 23.0 kg. for Baruwal.Both  the breed of animal were divided  into two groups  containing 5 animals in each group assigning 15 and 20%load equivalent to their body weight.  Barley grain were filled in the harness and animal were drived pre-determineddistance of  13.6 Jan. daily from  6:00AM to 1:00 PM.  The rectal temperature and the respiration rate was measured and statistically analyzed to compare the stress caused by the load. The result indicated that out of the two physiological reaction measured, respiration rate was the mostsensitive to the load carried. Among the breed Polwarth cross had higher respiratory rate showing more stressed . The suit indicated that with the percent of load carried (i.e. 15% and 20%) the was no significantdifferent of the load carrying ability of both crosses and indigenous sheep breed.