Abstract
The effects and factors of breeds, part of body and herds in Japanese domestic wool traits were investigated. The fleeces were greasy wool sampled from all over Japan, and breeds were Suffolk (SF), Corriedale (Co), Poll Dorset (PO) and F1 (SB) of Southdown by Booroola Dorset. The total number of fleece was nine, and parts of wool were neck, shoulder, back, side, britch and tags. The traits investigated were staple length, crimp number per cm, fiber diameter, admixture of plant substance and others, yield rate, compressed elasticity and water absorption.
The traits' values of staple length, crimp number and fiber diameter shifted gradually from the part of neck to tags. The effect of herd was considerably large, and almost of traits of wool were significantly different. The simple correlation between compressed elasticity and staple length or fiber diameter were negative, and was positive between that and crimp number. The yield rate was not good when the compressed elasticity was high so that the correlation between them was negative.
These results indicated that it is important to making an effort to improve raising management for good yield rate in Japanese domestic wool production.
