Cashmere Quality of Iranian Goat Breeds
Cashmere Quality of Iranian Goat Breeds
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DOI：
10.5398/medpet.2013.36.1.1
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发表时间：
2013-05
期刊：
影响因子：
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通讯作者：
H. Ansari-Renani
中科院分区：
文献类型：
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作者：
H. Ansari-Renani
本文对伊朗不同绒山羊品种的绒毛品质进行了评价，以确定纤维品质的改进空间。2009年4月，从168只1、2、3和4岁的公、母绒山羊身上采集了中段绒毛样本。这些山羊分别从克尔曼、南呼罗珊和亚兹德省的雷伊尼、比尔扬迪和纳豆山品种中随机选择。羊绒产量(CY)由脱毛羊绒重量与短绒重量的百分比确定。利用投影显微镜对羊绒纤维直径进行了分析。采用以性别、年龄为固定效应、品种为随机效应的一般线性模型对数据进行分析，测量了不同羊绒性状与羊毛属性之间的关系。总的平均标准偏差为：产绒量(CY)51.4%±1.5%，平均纤维直径(MFD)18.7±0.2µm，纤维直径变异系数(CVFD)19.1%±0.3%，绒长(SL)42.8±1.6 mm。一岁的山羊比年龄较大的山羊拥有更细腻的羊绒。雄性动物CVFD较高，幼年动物CY和SL较高。伊朗绒山羊品种的SL很好，但相对粗糙。鉴于山羊之间的差异，似乎有很大的空间来提高羊绒的商业价值。
This paper assesses the cashmere quality in different Iranian cashmere goat breeds to determine the scope for improvement of fiber quality. In April 2009 midside cashmere samples were taken from a total of 168 male and female cashmere goats of 1, 2, 3, and 4 yr of age. The goats were randomly chosen from Raeini, Birjandi, and Nadoushan breeds respectively from Kerman, South Khorasan, and Yazd provinces. Cashmere yield (CY) was determined from the percentage of weight of dehaired cashmere to weight of shorn fibre. Cashmere fiber diameter was analyzed using a projection microscope instrument. A general linear model including sex and age as fixed effects and breed as random effect was used to analyze the data and measure the relationships between different cashmere characteristics and fleece attributes. The overall means ± standard deviations were for cashmere yield (CY) 51.4%±1.5%, mean fiber diameter (MFD) 18.7±0.2 µm, coefficient of variation of fiber diameter (CVFD) 19.1%±0.3% and staple length (SL) 42.8±1.6 mm. One year old goats had finer cashmere than older goats. CVFD were higher in males and CY and SL were higher in young animals. Iranian cashmere goat breeds have an excellent SL but are relatively coarse. Given the differences between goats there seems to be substantial scope to improve the commercial value of cashmere.