Effect of Mutton Goat Poll Dorset and Suffolk to Wool Quality of Small Tail Han Sheep and Fine Wool Breed

In present paper wool quality analysis of cross combinations of Poll Dorset and Suffolk with Small Tail Han Sheep and Merino was conducted. The results are the following:The average fineness of cross combination of Poll Dorset stud goat with Small Tail Han Sheep and Merino was 58's, and 50's for offspring of cross of Suffolk with Small Tail Han Sheep。Wool length was 1.25cm - 2.31cm longer of Poll Dorset- Small Tail Han Sheep cross than that of Poll Dorset- Merino with significant difference, but no significant differences of wool lengths for crosses of Poll Dorset- Small Tail Han Sheep and Suffolk- Small Tail Han Sheep. Wool sweat of adult Poll Dorset- Merino was 5. 13% higher than that ofPoll Dorset- Small Tail Han Sheep. When mutton goat was applied to improve Small Tail Han Sheep, the fineness of the offspring would increase, Namely the wool density of Poll Dorset- Merino offspring was 1634-1678/cm2 more than the other combinations. It is concluded that the effect of the different male parent breed to the same female parent breed show no significant effect to wool quality of the improved combination; While the same male to the various female show relatively significant effect to wool quality of the improved combination.