Abstract: In this paper,in order to find out the hybrid effect on the production performance on weight gain and wool yield of the hybrid offspring,in which the F1 generation was crossbred by French Charolais sheep (♂) with Chinese Merino sheep (Xinjiang type) (♀) and the B1 generation was crossbred by French Charolais sheep(♂) with F1 (♀),a hybrid fattening experiment was carried out. The results showed that,in the March age, the average weight of F1 generation were 2.8% (P>0.05) and 46.5% (P<0.01) higher than the B1 generation and the Chinese Merino sheep (Xinjiang type) respectively;In the June age, the average body weight of F1 generation were 4.0% (P<0.01) and 28.6% (P<0.01) higher than the B1 generation and the Chinese Merino sheep (Xinjiang type) respectively;In the March age and June age, the average weight of B1 generation were 42.5% (P<0.01) and 23.7% (P<0.01) higher than Chinese Merino sheep (Xinjiang type) respectively. From the wool,there was no significant difference (P>0.05) between of F1 generation and and B1 generation on the average wool yield, but compared with the Chinese Merino sheep (Xinjiang type),the the average wool yield of F1 generation and B1 generation were reduced by 20.4% (P<0.01) and 20.1%(P<0.01) respectively, the differences were significant. From the gross economic benefits of weight gain and wool yield, compared with Chinese Merino sheep (Xinjiang type),the gross economic benefits of F1 generation and B1 generation were increased by 14.80% and 10.88% respectively. Therefore, we can make full use of the hybrid advantages of French Charolais sheep and Chinese Merino sheep (Xinjiang type) to develop mutton production, but should not be used for the production of wool.

Key words: Charolais sheep; Chinese Merino sheep (Xinjiang type); hybrid