亚热带山地高降雨量对细毛羊、新西兰罗姆尼羊羊毛油汗及羊毛品质影响的研究

Influence on Wool Grease and Characters of fine—Wool Sheep and New Zealand Romney Marsh Sheep by High Rain-capacity in the Subtropical Mountain Area

在亚热带中山人工草场放牧的细毛羊、罗姆尼公羊,在有羊舍情况下,经1270mm雨淋及其它风蚀,绝干污毛含脂率分别为23.13％和5.96％,汗/脂0.41和1.52,汗pH6.75和7.16,羊毛强度、伸度和白度均较好。无棚舍的母羊与同品种、有羊舍的两种公羊相比,除罗姆尼羊汗pH差异极显著外,其他各项指标均差异不显著。当降雨量增至1700mm时,绝干污毛含脂率,羊毛强度与伸度下降差异不显著,而羊毛白度下降差异极显著。根据以上结果,只要有羊舍,高雨量对两种羊的油汗及其它羊毛品质损害不大,罗姆尼羊的油汗比细毛羊易受雨淋的损害,但中山地带的气温对羊毛的损害小。

Fine-wool and Romney Marsh rams that had sheep cots having been gra(?)l in the subtropical middle-mountainous artifical grassland under 1270 mm rain=capacity and wind erosion, absolute dry raw-wool fat percentage of them was 23.13% and 5.96%, sweat/fat 0.41 and 1.52, sweat pH 6.75 and 7.16 respectively, wool intensity, stretch and white degree of them were better. Ewes that hadn't shed contrasted with the two kinds of that rams, except the wool sweat pH of Romney Marsh sheep was extreme significant difference, the others weren't significant different. As rain capacity increased 1700mm, the absolute dry raw-wool fat percentage, wool intensity and stretch descended weten't significant differeace, but wool white descended was extreme significant difference. As a result, the wool grease and characters of two kinds of sheep weren't injured heavily by high rainfall when there were sheep cots, the wool grease of Romney Marsh sheep was easier to be injured by a drenching rain than that of fine-wool sheep, but wool characters and grease were injured little by air temperature and sunlight in the middle-mountain area.