Abstract:Bamei lamb at 4 months-of-age， 6 months-of-age and 8 months-of-age were chosed， and made a slaughter experiment with Small tailed sheep and Sunit lamb at same age. According to the comparison of colour， tenderness， pH and cooked rate from triceps of different gender， the result showed that no significant differences on L* had been found between female and male of these three breeds at 4 months-of-age， however， the female had lower a* than that of male among these three breed （P<0.05）. The shear force in meat from Bamei was similar to the Small tailed sheep in both female and male at 4 months-of-age， respectively （P>0.05）. However， the shear force in meat from Bamei was lower than that of the Small tailed sheep and Sunit lamb in both female and male at 6 months-of-age， respectively （P<0.05）. There was not any difference of L* and a* between female and male of these three breeds at 8 months-of-age （P>0.05）. Meanwhile， the shear force in meat from Bamei was higher than that of the Small tailed sheep and Sunit lamb in both female and male at 8 months-of-age， respectively （P<0.05）. However， the cooked rate in meat from Bamei was lower than that of the Small tailed sheep and Sunit lamb in both female and male at 8 months-of-age， respectively （P<0.05）. From the 4 months-of-age to the 8 months-of-age of these three breeds， the shear force in meat from female was lower than that of male （P<0.05）. Meanwhile， the pH24 was similar all the time， however， the shear force decreased from 4 months-of-age and increased from 6 months-of-age， whereas the cooked rate exhibited a opposite tendency （P<0.05）.