Differential Expression of Immune Genes between Body Side Skin and Groin Skin of Aohan Fine Wool Sheep

[Objective] To get major genes for wool traits regulation from immune genes. [Methods] Microarray technology was used to detect differentially expressed immune genes between body side skin （more wool growing） and groin skin （no wool growing） of Aohan fine wool sheep. [Results] 46 immune genes （fold change 〉2.0） were identified and classified, and then 6 of which were selected for QPCR confir- mation. The degree of consistency of the QPCR and microarray results was 66.67%, [Conclusion] Immune privilege may participate in wool growth regulation.

Studies on Wool-Eating Ailment in Guizhou Semi-Fine Wool Sheep

The clinical symptoms of a disorder which is known locally as ＂wool-eating ailment＂ in Guizhou semi-fine wool sheep in the Weining County of Guizhou Province, China, are poor weight gain, lost appetite, pica, emaciation, and wool-eating. The mineral composition of forage, and samples of blood, liver and wool from Guizhou semi-fine wool sheep in affected ranches were compared with those from the unaffected areas. The mean concentration of iron in forage from affected pasture was significantly higher than that from the unaffected pasture. The mean concentration of sulfur in forage from the affected and unaffected pasture was similar and within normal ranges. The mean concentration of sulfur in blood, liver and wool from the affected Guizhou semi-fine wool sheep was significantly lower than that from the unaffected sheep while the content of iron in blood, liver and wool from the affected sheep was significantly higher than that from the unaffected sheep. Oral administration of calcium sulfate prevented and cured the disease. We concluded that the disease of Guizhou semi-fine wool sheep in the Weining County is due to S deficiency caused by the high Fe in forages.

Estimation of Genetic Parameters for Main Economic Traits in Keerqin Fine Wool Sheep

To investigate the population genetic structure of Keerqin fine wool sheep, the paternal half sib correlation method was employed to estimate the body weight traits, genetic and phenotypic correlation between fleece traits in the Keerqin fine wool sheep. The results showed that the correlation coefficients were 0.690 1, 0.593 1, 0.581 2, 0.210 2 for birth weight with weaning weight, body weight at one week of age, body weight at two week of age, and body weight at three week of age, respectively. The genetic correlations were highly significant （ P 〈0.01 ） for the four pairs of traits. The correlation coefficients were 0.373 3, 0.274 1, 0.268 2 for weaning weight with body weight at one week of age, body weight at two week of age, and body weight at three week of age, respectively. The genetic correlations were also extremely significant （ P 〈 0.01 ） for the three pairs of traits. The correlation coefficients were 0.712 0, 0.805 0, 0.717 1,0.701 9, 0.531 6, 0.719 0, 0.681 3 and 0.521 3 for wool fineness at one week and two week of age, wool fineness at one week and three week of age, staple length and fleece weight at one week of age, staple length at one week and three week of age, fleece weight at one week of age and wool fineness at three week of age, wool fineness at two week and three week of age, wool fineness at two week of age and fleece weight at three week of age, and fleece weight at two week and three week of age, respectively. The high genetic correlations were extremely significant （ P 〈0. O1 ） for the eight pairs of traits. The phenotypic correlations were generally lower than the genetic correlations.

Estimation of Genetic Parameters for Main Wool Traits in Keerqin Fine Wool Sheep

[Objective]To investigate the population genetic structure of Keerqin fine wool sheep. [Method]The genetic parameters of wool traits in Keerqin fine wool sheep were calculated by employing paternal half sib correlation method. [Results]The traits with high heritability( h≥0. 3) included wool length( 1-year old),wool yield( 1-year old) and wool yield( 2-year old); that with medium heritability( 0. 1≤h≤0. 3) included wool fineness( 1-year old),wool fineness( 2-year old),wool length( 3-year old) and wool yield( 3-year old). There were extremely significant positive correlations between wool fineness( 1-year old) and wool fineness( 2-year old),between wool fineness( 1-year old) and wool fineness( 3-year old),between wool length( 1-year old) and wool length( 2-year old),between wool length( 1-year old) and wool length( 3-year old),and between wool fineness( 2-year old) and wool fineness( 3-year old),with the correlation coefficients of 0. 653 0,0. 625 8,0. 489 6,0. 578 8,0. 578 4 and 0. 554 6 respectively. The results showed that the phenotypic correlation was poorer than genetic correlation among the wool traits. [Conclusion]The wool fineness,wool yield and body weight of Keerqin fine wool sheep all fail to meet the excellent level and need to be improved further.

Effects of dietary vitamin E on muscle vitamin E and fatty acid content in Aohan fine-wool sheep

Background： Increasing the polyunsaturated fatty acid （PUFA） content and decreasing the saturated fatty acid （SFA） content of mutton can help to improve its nutritional value for consumers. Several laboratories have evaluated the effects of vitamin E on the fatty acid （FA） composition of muscle in sheep. However, little information is available on wool sheep, even though wool sheep breeds are an important source of mutton, especially in northern China where sheep are extensively farmed. The present study was designed to address the effects of vitamin E on muscle FA composition in male Aohan fine-wool sheep. Methods： Forty-two male Aohan fine-wool lambs （5 mo old） with similar initial body weight were randomly divided into seven groups and fed diets supplemented with 0 （control group）, 20, 100, 200, 1,000, 2,000, or 2,400 IU/sheep/d vitamin E for 12 mo. Three lambs from each group were slaughtered to measure vitamin E and FA content in the Iongissimus lumborum （LL） and gluteus medius （GM） muscles. Results： Vitamin E concentrations in the LL and GM increased significantly after 12 mo of vitamin E supplementation （P 〈 0.05）. However, this increase did not occur in a dose-dependent manner because the muscle vitamin E concentration was highest in the 200 IU/sheep/d group. Dietary vitamin E supplementation also caused a significant reduction in SFA content and an increase in monounsaturated FA （MUFA） content in the LL and GM （P 〈 0.05）. All six doses of vitamin E significantly increased cis9 tronsl -conjugated linoleic acid （cgtl -CLA） content in the LL compared with the control group （P 〈 0.05）. Conclusions： Dietary supplementation with vitamin E increased muscle vitamin E content and improved the nutritional value of mutton by decreasing SFA content and increasing MUFA and c9tl 1-CLA contents in Aohan fine-wool sheep. These effects were greatest in sheep fed a diet containing 200 IU/sheep/d vitamin E.

High gene flows promote close genetic relationship among finewool sheep populations(Ovis aries) in China

The aim of our present study was to construct genetic structure and relationships among Chinese fine-wool sheep breeds. 46 individuals from 25 breeds or strains were genotyped based on the Illumina Ovine 50K SNP array. Meanwhile, genetic variations among 482 individuals from 9 populations were genotyped with 10 microsatellites. In this study, we found high genetic polymorphisms for the microsatellites, while 7 loci in the Chinese superfine Merino strain （Xinjiang types） （CMS） and 5 loci in Gansu alpine superfine-wool sheep strain （GSS） groups were found deviated from Hardy-Weinberg equilibrium （HWE）. Genetic drift FsT=0.019 （P〈0.001） and high gene flows were detected in all the 7 fine-wool sheep populations. Phylogenetic analysis showed fine-wool sheep populations were clustered in a group independent from the Chinese indigenous breeds such that the 7 fine-wool sheep clustered distinct from Liangshan semifine-wool sheep （LS） and Hu sheep （HY） reflected by different population differentiation analyses. Overall, our findings suggested that all fine-wool sheep populations have close genetic relationship, which is consistent with their breeding progress. These populations, therefore, can be regarded as open-breeding populations with high levels of gene flows. Furthermore, the two superfine-wool strains, viz., CMS and GSS, might be formed by strong artificial selection and with frequent introduction of Australian Merino. Our results can assist in breeding of superfine-wool sheep and provide guidance for the cultivation of new fine-wool sheep breeds with different breeding objectives.

Heritability Estimate for Aohan Fine-wool Sheep's Main Economic Characters

Objective] This study aimed to estimate the heritability of Aohan fine-wool sheep＇s main economic characters. [ Method] Half-sib correlation in sire method was adopted to estimate Aohan file-wool sheep＇s Birth Weight（BW）, Weaning Litter Weight （WLW）, Weaning Litter Staple Fineness（WLSF）, One-age Staple Fineness（OASF）, One-age Staple Length （ OASL）, One-age Wool Yield（OAWY）, Main Economic Characters of One-age Aohan fine-wool sheep, Two-age Staple Fineness （TASF）, Two-age Staple Length （TASL）, Two-age Wool Yield （TAWY）, Two-age Weight （TAW） after cropping. [ Result] The heritability was 0.1 -0.7. [ Conclusion~ The heritability of Aohan fine-wool sheep＇s main characters was middle-and-high.

Application Effect of Key Technology for Fine WoolProduction

By analyzing the gap between China and foreign countries in fine wool production, combined with the practical experience of fine woolproduction, the application effects of sheep clothing full coverage technology, mechanical shearing technology, wool grading and collection technology, scale packaging technology and standardized shearing environment control technique were evaluated, in order to provide reference for popularization and application of fine wool production.

HSPA2和SPATA6在彭波半细毛羊睾丸组织中的细胞定位及表达差异分析

热休克蛋白A2(HSPA2)是热休克蛋白HSP70家族重要成员,能够促进睾丸支持细胞增殖;精子发生相关基因6(SPATA6)能够调控肌球蛋白合成的微丝运输系统,影响精子细胞骨架形成。在雄性哺乳动物生殖过程中,两者均起重要作用。为研究HSPA2和SPATA6在雄性彭波半细毛羊生殖过程中的表达规律和细胞定位,以不同年龄阶段(3月龄、12月龄和3岁龄)彭波半细毛羊睾丸组织为研究对象,运用实时荧光定量PCR(real time quantitative PCR,qRT-PCR)、Western blot和免疫组织化学染色法(IHC)从转录和翻译水平检测了HSPA2和SPATA6在不同年龄阶段彭波半细毛羊睾丸组织的表达水平和分布模式,分析预测HSPA2和SPATA6在彭波半细毛羊睾丸发育和精子发生过程中的调控作用。结果表明:12月龄和3岁龄彭波半细毛羊睾丸组织中HSPA2 mRNA的相对表达量以及蛋白表达量极显著高于3月龄(P<0.01);12月龄SPATA6 mRNA的相对表达量以及蛋白表达量极显著高于3月龄(P<0.01),显著高于3岁龄(P<0.05)。不同年龄阶段彭波半细毛羊睾丸组织的支持细胞和间质细胞中HSPA2和SPATA6蛋白均有分布。初步推断,HSPA2和SPATA6的表达水平变化在调控彭波半细毛羊精子发生过程和促进精子成熟中具有重要作用。

细毛羊主要毛用性状检测及其评定方法

羊毛品质的检测方法、检测标准在推动毛纺工业发展、羊毛贸易以及细毛羊育种中具有重要作用。通过归纳国内外相关文献及标准,总结了国内外主要毛用性状及其检测标准;依据已有标准并结合国内在生产中的实际应用,详细介绍了2个羊毛产量性状与6类羊毛品质性状的客观测定方法,最后系统介绍了澳大利亚和中国开发的羊毛表型目测评定方法。文章可为开展羊毛纤维品质的统一测定和评估提供参考。

彭波半细毛羊屠宰性能与肉质特性研究

为更好地开发利用彭波半细毛羊遗传资源,从西藏自治区林周县种羊场选取相同饲养管理条件下的8月龄彭波半细毛公羊和母羊各8只,测定了屠宰性能和肉质特性。结果表明,8月龄彭波半细毛母羊的背膘厚度、背最长肌干物质含量、脂肪含量、必需氨基酸含量、必需氨基酸/氨基酸总量(EAA/TAA)、必需氨基酸/非必需氨基酸(EAA/NEAA)、单不饱和脂肪酸(MUFA)、多不饱和脂肪酸(PUFA)和n-6 PUFA含量均显著高于公羊(P<0.05);公羊背最长肌的亮度(L^(*))、剪切力、水分含量、鲜味氨基酸、非必需氨基酸/氨基酸总量(NEAA/TAA)、二十碳二烯酸含量和花生四烯酸含量均显著高于母羊(P<0.05)。且公、母羊肉的EAA/TAA均超过40%,EAA/NEAA均在67%左右。综上说明,8月龄彭波半细毛羊羊肉属于优质蛋白质,母羊肉的嫩度和营养价值优于公羊肉,公羊肉的色泽更鲜亮、口感更鲜美。

不同毛色ASIP基因编辑中国美利奴细毛羊皮肤组织中黑色素分布及ASIP蛋白的表达定位

为了研究ASIP基因在中国美利奴细毛羊被毛颜色形成过程中的作用机制,试验分别选取体况良好的3只野生型纯白色中国美利奴细毛羊,20只纯白色、8只棕色和10只黑色ASIP基因编辑中国美利奴细毛羊背部的皮肤组织,通过H.E.染色对比样本皮肤组织结构及黑色素分布差异;采用免疫组织化学染色检测ASIP基因编辑中国美利奴细毛羊白色、棕色、黑色3种皮肤组织中ASIP蛋白的表达定位情况。结果表明:野生型与ASIP基因编辑中国美利奴细毛羊的皮肤均由表皮、真皮、皮下结缔组织3部分组成,且表皮层最薄,各毛色皮肤结构组成无差异;黑色素颗粒主要分布于黑色、棕色ASIP基因编辑中国美利奴细毛羊皮肤组织的毛囊、毛干中,且黑色较棕色皮肤组织中分布的黑色素颗粒更为密集,而在白色被毛的野生型和ASIP基因编辑中国美利奴细毛羊皮肤组织中均未发现黑色素颗粒;ASIP蛋白在白色被毛的ASIP基因编辑中国美利奴细毛羊的表皮、毛囊外根鞘、毛乳头周围的毛基质中大量存在,在棕色、黑色皮肤组织中几乎不存在。说明ASIP蛋白在特定部位的表达情况与ASIP基因编辑中国美利奴细毛羊的白色被毛毛色的发生相关。

天华肉羊与甘肃高山细毛羊的屠宰性能和肉品质比较

为探讨天华肉羊与甘肃高山细毛羊两个品种的肉用性能差异,选择自然放牧条件下两个品种的6月龄育成母羊各6只进行屠宰,测定其屠宰性能、肉品质以及肌纤维特性。结果表明:①天华肉羊的宰前活重、肾脏重、眼肌面积均显著高于甘肃高山细毛羊(P<0.05)。②天华肉羊肉色指标中的亮度值(L*)、红度值(a*)、黄度值(b*)均显著高于甘肃高山细毛羊(P<0.05),脂肪含量显著低于甘肃高山细毛羊(P<0.05)。③天华肉羊的肌纤维直径和面积均显著低于甘肃高山细毛羊(P<0.05)。④两个品种羊均表现为宰前活重与眼肌面积、胴体重、肾脏重呈显著正相关(P<0.05);脾脏重与肝脏重、肾脏重呈显著正相关(P<0.05);pH45 min值与红度呈显著正相关(P<0.05);肌纤维直径与宰前活重呈显著负相关(P<0.05)。综上所述,与甘肃高山细毛羊相比,天华肉羊的肉用性能得到了很大提升,具有良好的推广价值。

不同剩余采食量对德新肉用细毛羊生长性能、血清生化指标、肝脏及十二指肠黏膜抗氧化能力的影响

本试验旨在研究高、中、低剩余采食量(RFI)对新疆德新肉用细毛羊生长性能、血清生化指标、肝脏和十二指肠黏膜抗氧化指标的影响。选用50只70日龄德新肉用细毛羊公羔作为试验群体,单栏饲喂114 d,其中预试期14 d,正试期100 d。根据线性回归方程筛选出RFI区间最小值和最大值分别为-0.31和+0.10 kg/d,并按照RFI>平均值+0.5标准差(SD)、平均值+0.5SD≥RFI≥平均值-0.5SD和RFI<平均值-0.5SD分为高RFI组(H-RFI组,11只)、中RFI组(M-RFI组,18只)和低RFI组(L-RFI组,13只)。试验期每20 d测定平均日增重及平均日采食量;试验期第100天,羊只屠宰后称量内脏重,测量消化道长度,并对血清中甲状腺激素、促甲状腺激素、瘦素、生长激素及肝脏和十二指肠黏膜抗氧化指标进行测定。结果表明:1)H-RFI组平均日采食量和RFI极显著高于L-RFI组和M-RFI组(P<0.01),料重比极显著高于L-RFI组和M-RFI组(P=0.01)。各组间羊只平均日增重、中期代谢体重无显著差异(P>0.05)。2)L-RFI组心脏重、脾脏重、肾脏重显著高于H-RFI组(P<0.05),头重、蹄重、肺脏重、肝脏重极显著高于H-RFI组(P≤0.01)。M-RFI组空肠重显著高于H-RFI组(P<0.05)。3)L-RFI组血清生长激素含量显著低于H-RFI组(P=0.05),血清甲状腺激素和瘦素含量极显著低于M-RFI组和H-RFI组(P<0.01)。4)肝脏抗氧化指标中,L-RFI组总蛋白(TP)含量极显著低于M-RFI组和H-RFI组(P<0.01),丙二醛(MDA)含量显著高于M-RFI组(P<0.05),谷胱甘肽过氧化物酶(GSH-Px)活性和总抗氧化能力(T-AOC)显著高于H-RFI组(P<0.05),L-RFI组和M-RFI组过氧化物歧化酶(SOD)活性显著高于H-RFI组(P=0.05)。十二指肠黏膜抗氧化指标中,M-RFI组TP含量极显著高于L-RFI组和H-RFI组(P=0.01),L-RFI组GSH-Px活性显著低于M-RFI组(P<0.05),M-RFI组过氧化氢酶(CAT)活性显著高于H-RFI组(P<0.05),M-RFI组T-AOC显著高于L-RFI组和H-RFI组(P<0.05)。由此可见,选择L-RFI的德新公羔可以有效减少饲粮消耗,并对羊只生长性能无显著影响,对德新肉用细毛羊选种选育具有较好的提升效果。

新疆地区多胎细毛羊体重与体尺指标的相关性、通径与回归分析

为了探究多胎细毛羊的生长规律,试验以239只成年多胎细毛羊为研究对象,测定其体重(Y)、体高(X_(1))、体长(X_(2))、胸围(X_(3))、头长(X_(4))、胸宽(X_(5))、管围(X_(6))7个生长发育指标,利用SPSS 26.0软件进行体重与6个体尺指标的相关性、通径及回归分析,建立体重与体尺指标的最适回归方程。结果表明:多胎细毛羊体重与体尺指标的变异系数从大到小依次为体重(19.76%)>胸宽(11.69%)>胸围(9.66%)>管围(8.40%)>体长(7.30%)>体高(6.59%)>头长(5.89%)。各体尺指标与体重间均呈极显著正相关关系(P<0.01),其中胸围与体重之间的相关系数最大,为0.809。胸围对多胎细毛羊母羊体重的直接作用最大,胸宽对体重的间接作用最大;除胸围外,其余各体尺指标对体重的直接作用均小于间接作用。多胎细毛羊体尺指标对体重的最优回归方程为Y=-60.292+0.387X_(2)+0.689X_(3)+0.579X_(5)(R^(2)=0.702,F=188.188,P<0.01)。说明在对多胎细毛羊进行选育时,应提高对其体长、胸围、胸宽的选择程度,同时也应考虑体高、头长、管围对体重的间接影响。

敖汉细毛羊羊毛经济性状的全基因组关联分析

旨在利用全基因组关联分析探寻敖汉细毛羊羊毛性状新的分子标记和候选基因。本研究采集1~2周岁的健康敖汉细毛羊耳组织与羊毛作为试验素材,其中,母羊248只,公羊81只,总计329只。羊毛进行性状测定(包括纤维直径、自然长度、伸直长度、伸直率),并对表型数据进行描述性统计和相关性分析。利用绵羊40K液相SNP芯片对全部个体进行基因分型。使用Plink 1.07软件对芯片数据进行质控,使用GCTA软件和PopLDdecay软件对质控数据进行群体结构分析。利用GMEMA混合线性模型对4种羊毛性状进行了全基因组关联分析(genomewide association study,GWAS),利用在线软件对候选基因进行GO和KEGG富集分析。质控后得到329只个体的30079个SNPs位点用于后续分析。通过GWAS分析筛选出4个在全基因组上显著相关的SNPs位点可能影响羊毛经济性状,分别位于1号、6号及8号染色体上。筛选出9个在染色体水平上显著相关的SNPs位点可能对羊毛性状具有潜在意义,分别位于3、5、8、11、18、21、22、25号染色体,寻找到39个可能影响羊毛性状的候选基因。本研究结果为后续探究敖汉细毛羊羊毛性状的遗传机制及分子育种标记开发提供重要参考。

一株羊源巨大芽孢杆菌BM24的分离鉴定及安全性评价

本试验旨在评估一株从健康细毛羊粪便中分离得到的巨大芽孢杆菌BM24的体外益生潜力及体内安全性。采集饲养过程中没有添加抗生素的健康新疆细毛羊的新鲜粪便,先通过形态学鉴定、生化鉴定、16S rRNA测序,初步获得羊源芽孢杆菌菌株,后续通过对酸和高浓度胆盐环境的耐受性,以及菌株的体外抗菌能力、耐药性、溶血活性和生长曲线等方面的检测,初步判断分离出的芽孢杆菌菌株的体外安全性,最后进行小鼠体内试验,评估其安全性。结果表明:1)初步分离得到1株羊源芽孢杆菌,结合生化鉴定和测序结果确定为巨大芽孢杆菌,将其命名为巨大芽孢杆菌BM24;2)该菌株可在pH=1.0条件下存活,0.3%胆盐培养4 h后存活率为49%,在15种常见抗生素中对12种抗生素高度敏感,对常见腹泻致病菌沙门氏菌和大肠杆菌抑制效果较好,无溶血活性;3)该菌株在37℃培养2 h后进入生长对数期,6 h后进入生长平稳期;4)灌胃该菌株后小鼠无死亡、体重变化正常,剖检体腔脏器无眼观病理现象,对肝脏、肾脏、脾脏指数及血细胞指标均无显著影响(P>0.05);腹腔注射该菌株,小鼠体征正常、无死亡现象,体腔脏器无眼观病理变化。综上可知,本试验分离得到的羊源巨大芽孢杆菌BM24具有良好的体外益生潜力,且无急性毒性作用,可作为羊源益生菌的候选菌株。

不同基因编辑类型对FGF5基因编辑羊羊毛性状的影响

【目的】分析不同基因编辑类型对成纤维生长因子5(FGF5)基因编辑细毛羊羊毛性状的影响,为开展基因编辑细毛羊的羊毛性状遗传参数评估提供理论依据。【方法】收集181只FGF5周岁基因羊,分析编辑细毛羊羊毛自然长度、伸直长度、羊毛纤维直径和剪毛量等性状的数据。【结果】FGF5基因编辑细毛羊羊毛自然长度平均值为10.49 cm,变异系数为11.82%。FGF5-InDel和FGF5-HDR基因编辑细毛羊羊毛自然长度和剪毛量均极显著高于野生型(P<0.01)。-28 bp或-26 bp、2 bp和置换(c.61 C>T)的羊毛自然长度和伸直长度均极显著长于wt(P<0.01),-28 bp或-26 bp的剪毛量显著高于wt(P<0.05)。-28 bp基因型的双等位基因编辑和单等位基因编辑突变的羊毛自然长度和伸直长度均极显著长于野生型(P<0.01)。【结论】不同基因编辑类型的FGF5基因编辑细毛羊均可显著提高羊毛自然长度和剪毛量,可利用表型性状突出的后代组建核心编辑羊群体,促进FGF5基因编辑细毛羊选育扩繁。

黄芪多糖对贵乾半细毛羊疾病发生、生长性能及生化指标的影响

为研究黄芪多糖对放牧贵乾半细毛羊疾病发生率、生长性能及生理生化指标的影响,试验选择健康、体重相近的6月龄贵乾半细毛羊120只,随机分为对照组、试验A组、B组、C组,每组30只,每组3个重复,每个重复10只。对照组日粮中不添加黄芪多糖,试验A组、B组和C组分别在日粮中添加1、2、3 g/(d·只)黄芪多糖。预饲期15 d,试验期90 d,观察疾病发生,测定各组羊只的生长性能并采集血液检测生理生化指标。结果表明:(1)试验C组发病率最低(3.33%)对照组发病率最高(26.67%)。(2)C组平均日增重极显著高于对照组(P<0.01),显著高于试验B组和C组(P<0.05);且对照组日精料采食量显著低于试验组(P<0.05)。(3)C组抗氧化指标SOD和GSH-Px显著高于对照组(P<0.05)。(4)C组的GPT指标显著高于对照组(P<0.05)。综上,日粮中添加黄芪多糖可提高放牧贵乾半细毛羊日增重,提高机体免疫能力和抗氧化力。

不同月份成年阿勒泰羊黑色毛绒品质变化规律研究

为了解阿勒泰羊黑色粗毛和绒毛性状在不同月份的变化规律,对2020年11月-2021年4月收集的100只成年阿勒泰母羊毛绒样品检测,分析各性状间的相关关系。结果显示:(1)绒毛含量随月份推移先升高后趋于平缓,1月份为阿勒泰成年母羊绒毛含量的高峰月(50.32%);(2)绒纤维平均直径随月份推移先下降后上升,2月份绒纤维平均直径达到最低(21.63μm);(3)手排长度随月份推移先降低后升高,11月份的手排长度最高(43.55 mm);(4)断裂伸长百分比随着月份的推移先降低后趋于平缓,11月份的断裂伸长百分比值最高(47.18%);(5)粗毛白度、粗毛光泽度在11-12月份、2月份和4月份之间均无显著差异性(P>0.05);(6)在11-4月份期间,1月份的绒毛含量显著高于11月份,2月份的绒纤维直径显著小于11月份,2月份的绒舒适度显著优于12月份,1月份的绒毛白度和绒毛光泽度均优于12月份。试验结果表明,1-2月份为阿勒泰母羊绒品质的最佳时期。