共查询到19条相似文献,搜索用时 93 毫秒
1.
LI Xue-wu WANG Rui-jun WANG Zhi-ying NA Qing LI Hong-wei WANG Zhen-yu SU Rui ZHANG Yan-jun LI Jin-quan 《中国畜牧兽医》2016,43(12):3275-3284
Fiber and wool quality not only affects the economic benefits of cashmere goat breeding, but also affects the quality of wool textiles. In recent years, fluff quality has declined with cashmere yield improvement. In order to improve production efficiency, improving fluff quality is imperative in the production process. At the same time, fiber and wool quality is important parameters of selection in breeding of goats. The main traits of controlling the fluff quality are quantitative traits. It can be to find the number of main effect genes by quantitative genetics and molecular genetics and to study its growth mechanism and gene expression. In this review, we summarize the recent achievements of the quality of cashmere, including the use of phenotypic select to improve the quality of the fluff and finding the genetics of controlling the quality of cashmere, for example, HOX,BMP,KAP genes and pigments, and beginning to find the corresponding control target trait QTL and different sequences of SNPs by GWAS analysis to improve the quality by genotype selection, in order to improve the quality of cashmere and provide reference to study the cashmere quality of genetic factors for later research. 相似文献
2.
3.
柴达木绒山羊绒毛纤维物理性能分析 总被引:1,自引:0,他引:1
柴达木绒山羊绒毛纤维物理性能的测定结果羊绒细度公、母羊为(14.25±2.67)μm和(14.36±2.57)μm,公、母羊绒伸直长为(8.00士2.01)cm和(8.22±1.42)cm,强度5.00~6.41cN,伸度39.33%~40.87%,绒毛比3763~4357,1 cm2皮肤面积上绒和毛纤维根数分别为1 895~2 278根和381~413根.表明柴达木绒山羊绒毛品质良好,可做为优等毛纺原料. 相似文献
4.
乌珠穆沁白山羊绒毛品质分析与研究 总被引:3,自引:0,他引:3
<正>乌珠穆沁白山羊主要分布在内蒙古自治区锡林郭勒盟东北部的乌珠穆沁草原上,现有总数50万只,年产原绒达300吨。 为了配合乌珠穆沁白山羊的选育提高,对中心产区东乌旗的乌珠穆沁白山羊的绒毛品质进行了分析研究。 材料及方法 (一)材料: 1989年5月中旬山羊集中抓绒期,从东乌旗10多个苏木的羊群中随机选取167只1~5岁的公母山羊采集了绒样,于7~8月份在内蒙古农牧学院畜牧系养羊实验室分育成公母羊、成年公母羊4组进行绒毛物理特性测定。 相似文献
5.
影响绒山羊产绒性能和绒毛品质的因素及其研究进展 总被引:1,自引:4,他引:1
绒山羊被毛生长是一个复杂的生理过程,受环境、营养和遗传3个因子的影响。不同品种、不同个体表现出的周期性生长的差异表明,遗传是调控被毛生长的最主要的因子,内分泌在其中起着重要作用,环境、营养最终都要通过体内生理状况的改变而起作用,即依赖于有关基因的表达及其产物的调控。本文主要从以下几方面综述影响绒山羊产绒性能和绒毛品质的因素及其研究概况。 相似文献
6.
绒山羊绒毛生长机理研究进展 总被引:2,自引:1,他引:1
近年来,探讨绒山羊生绒机理及如何提高绒山羊绒产量成了热点问题。文章从环境因素、营养因素及遗传因素对绒山羊绒毛生长的调控机理进行了综述,试图展示国内外对绒山羊生绒机理的研究现状,提出今后值得关注的研究方向,以期对今后的研究有所帮助。 相似文献
7.
8.
内蒙古白绒山羊绒毛质量选育的研究 总被引:1,自引:0,他引:1
内蒙古白绒山羊绒毛质量选育的研究安玉君,王志新,马惠如,乌兰其其格(内蒙古农牧学院动物科学系呼和浩特010018)前言内蒙古白绒山羊是经长期精心选育成的地方优良品种。绒毛品质在世界上屈指可数,它不仅细度细、光*泽好,而且白度高,深受毛纺工业发达国家的... 相似文献
9.
10.
11.
12.
13.
通过对青海半细毛羊羊毛纤维长度方向1cm区段含硫量的测定。结果表明青海半细毛羊纤维不同长度区段的含硫量不同,含硫顶峰值公羊1岁9cm,2岁14cm,成年14cm,母羊1岁12cm,2岁8cm,成年10cm。毛纤维垂直方向上,中,下三段中,含硫量以中段最高。二岁公羊毛长与含硫量的正相关,相关系数R=0.75735,一岁母羊呈中等正相关,R=0.31762,其余各性别年龄组内呈弱的负相关,相关系数为R=-0.01016-0.23774。 相似文献
14.
15.
针对我国绒、毛绵、山羊产业的发展现状与存在的主要问题,提出绒毛用羊高效繁育关键性适用技术。以狠抓"种"、"繁"为根本,提供优质饲草料与人工种草为基础,随着饲养方式的渐变改善饲养方法,加强羊舍建设与卫生保健,建立完善的免疫体系,确保绒毛用羊安全、高效生产目标的实现。 相似文献
16.
试验旨在研究褪黑激素(Melatonin,MT)对长毛兔夏季产毛的影响。选择1.5岁左右的皖系长毛兔60只,其中公兔40只,母兔20只,随机分为4组,分别皮下埋植0、25、40、55 mg的褪黑激素,经过70 d的养毛期后测定各组产毛量及粗毛和细毛的长度变化差异,分析褪黑激素对长毛兔产毛性能的影响。结果显示:公兔40 mg埋植组产毛量显著高于埋植前产毛量(P<0.05),55 mg埋植组产毛量显著高于对照组产毛量(P<0.05);母兔对照组试验后剪毛量显著低于试验前剪毛量(331.0 g vs 284.8 g,P<0.05),而3个褪黑激素埋植组试验后产毛量下降幅度并不显著(P>0.05)。皮下埋植40 mg或55 mg褪黑激素能够增加皖系长毛兔公兔或母兔的粗毛长度,但对细毛长度和兔毛细度均无显著影响(P>0.05)。说明长毛兔皮下埋植40 mg和55 mg褪黑激素能够提高公兔夏季产毛量且抑制母兔夏季产毛量的降低,同时增加公、母兔粗毛长度。研究结果可为褪黑激素的合理利用提供参考,并为揭示其对促进长毛兔夏季兔毛生长的作用机制奠定基础。 相似文献
17.
18.
本试验采用相关国家方法标准对321只羊驼毛绒样品开展了纤维细度及单纤维强力参数的检测,旨在分析羊驼毛纤维细度、单纤维强力及二者之间的相关性。结果表明,羊驼侧部毛纤维平均细度为24.30 μm,细度主体范围为18.01~27.00 μm,占样本总量的72%;平均纤维强力为8.31 cN,主体范围为5.01~11.00 cN,占样本总量的88%,说明羊驼毛整体细度较细,强力可满足纺织加工要求。羊驼毛细度和单纤维强力相关性分析发现,不同性别、年龄的羊驼颈部、肩部、股部、腹部、侧部、背部6个不同部位细度、单纤维强力都反映为背部最细,单纤维强力最小,腹部细度最粗,单纤维强力最大;另外,从羊驼毛不同细度区间对应单纤维强力分布也可看出,羊驼毛的单纤维强力值越大其细度值越大,反之越小;除此之外,不同性别、年龄的羊驼毛细度对应单纤维强力也呈正相关,成年羊驼毛细度粗于周岁羊驼,公羊驼毛细度粗于母羊驼,成年羊驼单纤维强力大于周岁羊驼,公羊驼单纤维强力大于母羊驼。综合以上结果,说明羊驼毛细度与单纤维强力呈正相关。 相似文献
19.
In this study,321 samples were tested to evaluate the correlation between fineness and single fiber strength of alpaca fiber. The results showed that fineness average of lateral part was 24.30 μm,subject range was from 18.01 to 27.00 μm,accounted for 72% of the total samples;The strength average was 8.31 cN,subject range was from 5.01 to 11.00 cN, accounted for 88% of the total samples, it showed that the overall fineness of alpaca wool fiber was fine,the strength could satisfy the textile technology. The correlation results showed that the fineness of different parts (neck, shoulder, thigh, abdomen, lateral and back) in different groups (sex, age) all reflected that the wool fiber of the back was the finest,the strength was the minimal;And that of abdomen was the thickest,the strength was the maximum. On the other hand, we knew the greater the strength, the fineness was thicker; The smaller the strength, the fineness was finer from the distribution of different fineness range corresponded to the strength. In addition, there was also a positive correlation between them in differernt groups (sex,age),the fineness of adult alpaca was thicker than yearling alpaca, the male alpaca was thicker than female alpaca; The strength of adult alpaca was stronger than yearling alpaca, the male alpaca was stronger than female alpaca. The above results showed that the fineness of alpaca wool fiber was positively correlated with the single fiber strength. 相似文献