Interaction of methylenetetrahydrofolate reductase C677T,cytochrome P4502E1 polymorphism and environment factors in esophageal cancer in Kazakh population

AIM： To evaluate the association and interaction of genetic polymorphisms in methylenetetrahydrofolate reductase （MTHER） and cytochrome P4502E1 （CY- P4502E1）, environment risk factors with esophageal cancer （EC） in Kazakh, a high EC incidence area of Xinjiang Uygur Autonomous Region, China. METHODS： A 1：2 matched case-control study was conducted with 120 cases of EC and 240 populationor hospital-based controls. The controls were matched for sex, nationality, area of residence and age within a 5-year difference. MTHER and CYP4502E1 genotypes were identified by PCR-based restriction fragment length polymorphism （RFLP）. A conditional logistic regression model was established to identify risk factors. The strata method was adopted in interaction analysis. RESULTS： Low consumption of green vegetables and fresh fruits, alcohol drinking, and unsafe water （shallow well, or river） were found to be the risk factors for EC. Individuals with the MTHFR677 （C/T ＋ T/T） genotype had a 2.62-fold （95% CI： 1.61-4.28） risk of developing EC compared with those who carried the C/C genotype. Individuals with the CYP4502EIC1/C1 genotype had a 3.00-fold （95% CI： 1.82-4.96） risk compared with those who carried the CYP4502E1 （C1/C2 ＋ C2/C2） genotype. Gene-environment interaction analysis showed that MTHFR677 gene polymorphism was correlated with consumption of green vegetables and fresh fruit, while CYP4502E1 C1/C1 was correlated with alcohol drinking and unsafe drinking water. MTHFR and CYP4502E1 analysis of gene-gene interaction showed that individuals with the MTHFR677 （C/T ＋ T/T） and CYP4502EIC1/ C1 genotypes had a 7.41-fold （95% CI： 3.60-15.25） risk of developing EC compared with those who carried the MTHFR677C/C and CYP4502E1 RsaI C1/C2 ＋ C2/C2 genes, and the interaction rate was higher than that of the two factors alone. CONCLUSION： Low consumption of green vegetables and fresh fruits, alcohol drinking, and unsafe water （shallow well, or river） and polymorphisms in MTHFR and CYP4502E1 genes are important risk factors for EC. There is a synergistic interaction among polymorphisms in MTHFR and CYP4502E1 genes and environment factors. MTHFR and CYP4502E1 genes can be used as biomarkers for prevention of EC in Kazakh, Xinjiang Uygur Autonomous Region, China.

Gene Chip Technology Used in the Detection of HPV Infection in Esophageal Cancer of Kazakh Chinese in Xinjiang Province

Summary： This study was aimed to screen human papillomavirus （HPV） types associated with esophageal squamous cell carcinoma of Kazakh in Xinjiang using the gene chip technique and study the clinical significance of this application. The DNAs were collected from esophageal squamous cell carcinoma tissues and healthy esophageal mucosa of Kazakh adults in Xinjiang, and amplified firstly using HPV MY09/11 and then using HPV G5＋/6＋ to screen positive HPV specimens. These positive specimens were further detected by the gene chip technique to screen highly pathogenic HPV types. After determination with nested PCR amplification with HPV MY09/ll and G5＋/6＋, the infection rate of HPV was 66.67% in the esophageal squamous cell carcinoma group and 12.12% in the healthy control group. By testing the positive HPV specimens from the esophageal squamous cell carcinoma group, the infection rate of HPV16 was 97.72% and the co-infection rate of HPV16 and HPV18 was 2.27%. HPV16 infection may be involved in the development of esophageal squamous cell carcinoma in Xinjiang Hazakh adults.

Glutathione-S-transferase M1 polymorphisms on the susceptibility to esophageal cancer among three Chinese minorities:Kazakh,Tajik and Uygur

AIM： To investigate the glutathione-S-transferase M1 （GSTM1） polymorphisms in three Chinese minorities, Kazakh, Uygur, and Tajik; and the pathological significance of GSTM1 polymorphisms in esophageal carcinogenesis in Kazakh.METHODS： A total of 1121 blood samples （442 males and 679 females） were obtained from healthy Kazakh （654）, Uygur （412） and Tajik （55）. Primary esophageal squamous cell cancer （ESCC） tissues from Kazakh were obtained from 116 patients who underwent surgery. GSTM1 polymorphisms were analyzed by a combined approach of PCR and electrophoresis techniques.RESULTS： GSTM1 null genotype was found in 62.63% Uygur, 50.91% Tajik and 47.40% Kazakh. A significantly higher frequency of GSTM1 null genotype in Uygur was observed compared with Kazakh （OR： 1.859, 95% CI： 1.445 -2.391, χ^2 = 23.71, P = 0.000）. In addition, GSTM1 null genotype was found in 23.53% of welldifferentiated ESCC in Kazakh, in 49.23% of poorly differentiated ESCC, with a significant difference （OR： 3.152, 95% CI： 1.403-7.080, χ^2 = 8.018, P = 0.007）.CONCLUSION： There is a marked difference in the frequency of common GSTM1 null genotype between Uygur and Kazakh. GSTM1 null genotype is associated with differentiation of ESCC in Kazakh.

Characteristics of Genetic Resources of Kazakh Horse

In order to understand the characteristics of genetic resources of Kazakh horses in Xinjiang,their body size,phenotypes and coat colors were investigated and analyzed using the methods of resources survey and body size measurement. The results showed that the coat color of Kazakh horses in Xinjiang is very rich,covering more than 90% of the world＇s horse coat colors. The influencing factors of Kazakh horse body size data might include the environment and geographical distribution of Kazakh horses. The gap between Xinjiang Kazakh horse and Kazakhstan Kazakh horse was relatively large,which was related to the degree of breeding.There were some differences in the appearance of Kazakh horses between Altay and Ili regions with different ecological environment. The Kazakh horses in Altay were relatively strong in size,well developed in coat and long hair,long and dense in fuzz in winter,and rich in coat color. But the Kazakh horses in Ili were compact in size,less in coat than those in Altay,and have a single coat color.

Detection of Human Papillomaviral Infection on Kazakh Patients with Esophageal Squamous Cell Carcinoma in Xinjiang

OBJECTIVE To investigate the detection rate of humanpapilloma virus (HPV) DNA in the Kazakh esophageal carcinoma(EC) patients of Xinjiang.METHODS We detected the prevalence of a HPV gene in tumortissues from 318 esophageal squamous cell carcinoma (ESCC).Tumor tissues were kept in formalin and embedded in paraffin.One hundred seventeen samples used crude cell suspension, whilethe other 201 used the method of DNA extraction with phenol-Tris/chloroform. We analyzed the relevance to EC of Kazakh's inXinjiang.RESULTS In the ESCC samples of Kazakh's in Xinjiang, totaldetection rate for HPV DNA was 64.5% (205/318). The positiverate of HPV in group of crude cell suspensions was 82.9% (97/117)compared with the rate of 53.7% (108/201) in the group of DNAextraction. The results in the two groups showed significantdiffference (x^2 = 5.711, P < 0.05).CONCLUSION HPV DNA infection may be one of the mostimportant factors related to EC of Kazakh's in Xinjiang.

Kazakh Nationalism in Eurasian Context

This abstract has concerned primarily with the new look to the stages of post-Soviet Kazakh nationalism development embedded in context of Eurasian concept. Could we prove true widely held predictions about future strengthening of nationalists＇ position in post-crisis country？ As we state, opposite to above mentioned ideas, the more Kazakhstan would be involved in to Russian politics orbit which means further movement to Eurasian ＂path＂ the more undermined should be Kazakh nationalists conventional certainties. Moreover, one of the world crisis consequences could be displayed in leadership authoritarian tendencies strengthening. The latter undoubtedly ought to erode Kazakh nationalists＇ position.

Approaches to the Elaboration of Regeneration and Transformation Systems for Elite Kazakh Cotton Varieties

The development and wide application of genetic transformation for cotton improvement are restrained by the unresolved problem of genotype dependence in regeneration in vitro.High embryogenic and regenerative potential have been obtained for limited number of Coker type genotypes。

The classification of handwriting features of the Kazakh language written in Latin script

In 2017,the Republic of Kazakhstan began the phased transition of its alphabet from Cyrillic to Latin script.This transition has presented significant challenges to Kazakhstani document examiners,who have yet to develop appropriate methodologies for the analysis of handwriting samples written in the Kazakh language using Latin letters.This study aims to identify distinguishing macro and micro features of letters within Kazakh writing samples produced using the Latin alphabet and determine their frequencies of occurrence and discriminating power indices.Micro features were examined using the four most frequently appearing letters:“a”,“y”,“e”and“n”.A comparative analysis of tested Latin letters with those of a similar configuration in Cyrillic demonstrated differences in the number of distinguishing features,as well as in the frequency of occurrence and discriminating power indices of similar features.These results show that separate statistical bases should be used for Latin and Cyrillic letters when analysing handwriting samples based on the frequencies of occurrence of micro and macro writing features.

Kazakh WWⅡ Veterans Revisit China Theater

When war spread across the globe more than 70 years ago,both China and Kazakhstan were plunged into the unprecedented disaster.For eight years on the Pacific theater battlefields of World War II,Chinese soldiers and civilians fought

The Good Wife (a Kazakh folk story)

LONG, long ago, there lived a king who had a daughter who was both intelligent and beautiful. One day in the royal garden, the king saw a beautiful white swan hovering about and trumpeting. The princess said. "The white swan told me that a good wife can make a king out of a stupid man, while a lazy wife will change a diligenl hush,md into a lazy man." Irritated, the king said. "Let me see how you call turn a fool into a king!" And he ordered his men to drive the princess to the most

新疆哈萨克族血脂异常、高血压和糖尿病共病现状及影响因素研究

背景心血管疾病是我国居民的首要死亡原因,高血压、高血糖和血脂异常(“三高”)是心血管疾病的重要危险因素,因此国家提出实施“三高”共管,但目前缺乏关于新疆哈萨克族“三高”共病情况的相关研究。目的调查哈萨克族血脂异常、高血压和糖尿病患病率及共病情况,探索三者共病的影响因素。方法本研究为横断面研究。2022年3—6月,在新疆阿勒泰地区富蕴县,选取杜热镇和吐尔洪乡两个人口较多且以哈萨克族为主的乡镇,调查该地区18岁以上哈萨克族常住居民,通过问卷调查(一般信息、吸烟饮酒史、患病情况等)、体格检查(腰围、臀围、身高、体质量、血压、心率等)和实验室检查(总胆固醇、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇、三酰甘油和空腹血糖等)收集患者信息,使用多因素Logistic回归分析探究哈萨克族“三高”共病的相关影响因素。结果共纳入4835名哈萨克族居民,男、女各占48.2%(2231/4835)和51.8%(2504/4835),平均年龄(45.8±12.7)岁。血脂异常、高血压和糖尿病标化患病率分别为37.9%、21.1%和4.0%。血脂异常患者中高胆固醇、高低密脂蛋白胆固醇、低高密度脂蛋白胆固醇和高三酰甘油血症人群的标化患病率分别为24.1%、24.8%、10.0%和7.3%。“三高”共病的标化患病率为11.8%。单因素Logistic回归分析显示,性别、年龄、BMI、腰围、臀围、心率、婚姻状况和文化程度是“三高”共病的影响因素(P<0.05);多因素Logistic回归分析显示,性别、年龄、婚姻状况、BMI和心率是“三高”共病的影响因素(P<0.05)。结论哈萨克族血脂异常患病率高于高血压和糖尿病,血脂异常以高胆固醇血症为主。血脂异常与高血压共病在“三高”共病中最为常见,应将老年人、男性和高BMI人群作为“三高”共管的重点人群。

人源分离长双歧杆菌长亚种的体外益生特性分析

对新疆伊宁县哈萨克族学龄儿童粪便样品双歧杆菌(Bifidobacterium)进行分离鉴定,重点开展长双歧杆菌长亚种(B.longum subsp.longum)菌株的体外益生特征实验。依据groEL功能基因测序和重复性外源性回文聚合酶链反应指纹分型技术,416株双歧杆菌隶属于B.longum、B.bifidum、B.pseudocatenulatum、B.catenulatum和B.breve。依据优势种B.longum subsp.longum的指纹分型,27种基因型显示了个体间菌株的遗传差异,同时发现同一个体肠道有多菌株共存现象。27株代表菌株的体外实验结果表明,菌株2B3-21、1B23-11、2B33-3和1B68-16的耐酸、耐胆盐能力最优,菌株1B68-16、2B13-5、2B33-3和1B39-2的抑菌能力较强;菌株1B38-1、2B33-3、1B68-16和2B13-28体外抗氧化能力较强,综合所有菌株的抗生素耐药性和利用多种植物源聚糖的能力进行考虑,筛选菌株1B68-16和2B33-3作为潜在的益生菌菌株后续开展体内益生特性研究,本研究可为开发适应特定区域人群的优良益生菌株及产品奠定基础。

高、低乳脂率哈萨克马血浆代谢组比较分析

本研究旨在分析不同乳脂率哈萨克马血浆代谢物的差异,筛选出高乳脂率哈萨克马血浆中的标志代谢物,为高乳脂率哈萨克马的选育提供数据支撑。选取年龄、胎次、体况相近,饲养管理条件一致的泌乳期哈萨克马12匹,采集产后第30~105天的乳样和血样各288份。根据测定的乳脂率结果,将乳脂率高(≥1.84%)的6匹哈萨克马的血样组成高乳脂率组,乳脂率低(≤0.90%)的6匹哈萨克马的血样组成低乳脂率组。之后,通过非靶向液相色谱-质谱(LC-MS)代谢组学技术分析血样本中的血浆代谢物。结果显示:从高、低乳脂率哈萨克马血浆中共检测出53种差异代谢物。高乳脂率哈萨克马血浆中花生四烯酸、D-赤式-1-磷酸鞘氨醇、前列腺素、5-羟基吲哚-3-乙酸、血栓素B2、尿酸等36种物质的浓度显著高于低乳脂率哈萨克马(P<0.05),L-焦谷氨酸、D-果糖-6-磷酸、生物素和D-高半胱氨酸等17种物质的浓度显著低于低乳脂率哈萨克马(P<0.05)。这些差异代谢物主要富集在花生四烯酸代谢、亚油酸代谢、嘌呤代谢、半乳糖代谢及甘氨酸、丝氨酸和苏氨酸代谢等代谢途径。本研究结果可为深层次探究乳脂的合成以及进一步提升马乳品质提供理论基础。

伊犁马与哈萨克马背最长肌脂质代谢与转录组分析

本研究旨在通过比对伊犁马与哈萨克马背最长肌的差异表达基因,筛选与马脂质代谢相关的候选功能基因。以伊犁马和哈萨克马为研究对象,采集所选马匹背最长肌样本,对所采样本进行脂质代谢和转录组检测,筛选脂质代谢差异代谢物及差异表达基因,并对筛选出的差异表达基因进行富集分析。结果显示,与哈萨克马相比,伊犁马背最长肌中共筛选出21种显著下调的脂质差异代谢物;两组肌肉样本中共筛选出718个差异表达基因,与哈萨克马相比,伊犁马中有300个基因表达显著上调,418个基因表达显著下调;差异表达基因显著富集在78个GO条目中,其中与脂质代谢相关的主要有蛋白质转运、有机物运输、细胞质、钙离子结合和ATP酶活性等;KEGG显著富集在41条通路中,其中与脂质代谢相关的通路主要有脂质与动脉粥样硬化、糖尿病性心肌病、丙酸代谢和EGFR酪氨酸激酶抑制剂耐药性等。本研究初步确定了APOA1、MPC1、ACOX1、EGF、VLDLR、GAS6和ABCA1等7个基因参与了马脂质代谢,为马脂质代谢的分子机制研究提供了数据参考。

多胎萨福克羊与哈萨克羊级进杂交后代生长性能、屠宰性能、肉品质及血液生理生化指标分析

【目的】了解天然放牧条件下多胎萨福克羊与哈萨克羊级进杂交羔羊的生长性能、屠宰性能和肉品质等,评估多胎萨福克羊对哈萨克羊的级进杂交改良效果。【方法】试验以3月龄体况、体型基本一致的多胎萨福克羊及其与哈萨克羊级进杂交F1、F2代和哈萨克公羊为研究对象,天然放牧条件下饲养,试验预试期10 d,正试期90 d。试验结束后选择接近组内平均体重羔羊各10只,屠宰前测定各试验羊体尺指标,屠宰后分别测定屠宰性能、肉品质、营养成分及血液生理生化指标。【结果】(1)多胎萨福克羊、级进杂交F1和F2代羔羊的体高、胸深、宰前活重、胴体重、屠宰率、肉骨比、眼肌面积均显著高于哈萨克羊(P<0.05);级进杂交F1代羔羊和哈萨克羊的背脂厚度、尾脂重显著高于多胎萨福克羊和级进杂交F2代羔羊(P<0.05)。(2)级进杂交F1代羔羊背最长肌水分含量显著高于多胎萨福克羊、级进杂交F2代羔羊和哈萨克羊(P<0.05);哈萨克羊背最长肌中铁、锌、镁和粗脂肪含量均显著高于多胎萨福克羊、级进杂交F1和F2代(P<0.05)。(3)多胎萨福克羊、级进杂交F1和F2代羔羊血液中白细胞数、嗜碱性粒细胞数、中性粒细胞数、嗜酸性粒细胞数、淋巴细胞数等显著高于哈萨克羊,嗜碱性粒细胞百分比、嗜酸性粒细胞百分比、血小板总数、平均血小板体积等均显著低于哈萨克羊(P<0.05)。(4)多胎萨福克羊、级进杂交F1和F2代羔羊血清中碱性磷酸酶活性显著高于哈萨克羊,总蛋白含量显著低于哈萨克羊(P<0.05);级进杂交F1代羔羊血清中谷丙转氨酶活性、铁含量均显著低于哈萨克羊(P<0.05);多胎萨福克羊血清白蛋白含量显著高于级进杂交F1、F2代和哈萨克羊(P<0.05)。【结论】天然放牧条件下,多胎萨福克羊及其级进杂交后代的产肉性能高于哈萨克羊,随着杂交代数的增加,屠宰性能明显提升、肉品质得到改善。

维吾尔族、哈萨克族和汉族大学生体重指数与体能指数的关系

目的:了解维吾尔族、哈萨克族和汉族大学生的营养和体能状况,调查不同民族体重指数(body mass index,BMI)和体能指数(physical fitness index,PFI)之间的非线性联系。方法:采用分层随机整群抽样方法,抽取2021年新疆维吾尔自治区某高校非体育专业的维吾尔族、哈萨克族和汉族共3600名大学生作为研究对象,测量身高、体质量、肺活量、50米跑、立定跳远、坐位体前屈、仰卧起坐/引体向上和耐力跑,计算体重指数和各测试成绩的标准化Z分数以及PFI等指标,对数据进行卡方检验、单因素方差分析和非线性二次回归分析。结果:汉族大学生的超重(16.00%)和肥胖(8.08%)检出率明显高于维吾尔族(11.83%和4.08%)和哈萨克族(13.58%和4.58%)大学生,低体重检出率维吾尔族(11.92%)最高,哈萨克族最低(9.75%)。三个民族总体和男女之间BMI分级检出率差异均有统计学意义(P均<0.05)。维吾尔族、哈萨克族和汉族不同BMI分级大学生之间PFI差异均有统计学意义(P均<0.05),总体表现出正常体重组高于其他体重组,且超重组高于肥胖组,但是低体重组的PFI最高。非线性二次回归显示,维吾尔族男女和哈萨克族男生的曲线呈倒“J”形,PFI随着BMI的增大先升高后下降,其余曲线呈弧形,PFI随着BMI的增大而下降。结论:维吾尔族、哈萨克族和汉族大学生超重肥胖会带来体能的下降,但是哈萨克族低体重组男女大学生和汉族低体重组女大学生的体能好于正常体重组。着重提高维吾尔族低体重和超重男生、汉族超重女生的体能可以有效缩小民族内各体重等级和民族间的大学生体能差异。

多胎萨福克与哈萨克羊杂交F1和F2代屠宰性能的比较

为研究多胎萨福克羊杂交改良哈萨克羊的效果,以6月龄多胎萨福克与哈萨克羊杂交F1和F2代公羔为试验对象,测定羔羊的体尺和体重,通过屠宰试验测定屠宰率、胴体重、净肉重、脂肪重、骨重、背膘厚和眼肌面积等指标,对比杂交F1和F2代羔羊的体尺、体重和屠宰性能。结果表明:杂交F1和F2代羔羊的体高、体斜长、胸深、胸宽、胸围和管围差异均不显著(P>0.05)。杂交F1和F2代羔羊的宰前活重、胴体重、净肉重、净肉率、肉骨比、肋肉厚、眼肌面积差异均不显著(P>0.05),F1代羔羊的背膘厚显著大于F2代(P<0.05),F2代羔羊的屠宰率显著大于F1代(P<0.05)。以上结果表明多胎萨福克羊杂交改良哈萨克羊时,随着杂交代数的增加,F2代羔羊的背膘厚显著降低,肉品质得到提高。

基于UPLC-MS/MS方法分析哈萨克族食管鳞癌患者的血清脂质组学特征

目的:基于血清脂质组学研究新疆哈萨克族食管鳞状细胞癌(ESCC)患者的脂质代谢特征。方法:选取2018年1月—2020年12月新疆医科大学第一附属医院胸外科就诊的30例哈萨克族ESCC患者(ESCC组),另外选择同期在新疆医科大学健康管理中心体检的哈萨克族健康体检者30例(对照组)。采用超高效液相色谱质谱联用技术(UPLC-MS/MS)对两组人群血清进行靶向定量脂质组学分析。根据同类脂质内标峰面积和实际浓度关系进行脂质定量。利用脂质数据进行多变量统计分析。结果:60例血清样本中共筛选出13种脂类,其中浓度最高的是三酰甘油、磷脂酰胆碱和磷脂酰乙醇胺,溶血磷脂酰胆碱是两组人群血清中差异最大的脂类。相较对照组血清样本,哈萨克族ESCC患者血清中三酰甘油、溶血磷脂酰胆碱的浓度上调,磷脂酰乙醇胺下调。溶血磷脂酰胆碱、磷脂酰乙醇胺和磷脂酰胆碱的链长度和不饱和度在哈萨克族ESCC患者血清中显著下调。根据正交偏最小二乘法-判别分析(OPLS-DA),以阈值(P<0.05和差异倍数>2或<0.5)筛选差异脂质代谢物,共筛选出77种差异脂类,其中与对照组比较,ESCC组上调的有34种,下调的有43种。包括甘油三酯、甘油二酯、溶血磷脂酰胆碱、磷脂酰乙醇胺及游离脂肪酸。结论:哈萨克族ESCC患者血清中不同脂质浓度及变化趋势存在差异。其中甘油三酯、溶血磷脂酰胆碱的浓度上调,磷脂酰乙醇胺、溶血磷脂酰胆碱、磷脂酰乙醇胺和磷脂酰胆碱链长度及不饱和度下调。分析这些脂质分布的变化和筛选新靶标有助于阐明新疆哈萨克族ESCC的发生发展机制。

周岁哈萨克羊胴体性状及脂肪酸成分分析

【目的】测定周岁哈萨克羊胴体性状及脂肪酸成分,分析周岁哈萨克羊产肉性能及影响羊肉风味及品质的主要物质,为羊肉生产及产品研发提供新的思路。【方法】随机选取20只周岁哈萨克羊,公母各10只,屠宰并采集背肌,测定4个性状并记录数据。利用内标法测定哈萨克羊肌内脂肪成分,使用SPSS和Excel软件对数据进行多重比较和相关性分析。【结果】周岁哈萨克羊的宰前活重、胴体重、净肉重、尾重、尾重占胴体重百分比、屠宰率、背肌与性别呈极显著相关。饱和脂肪酸(SFA)中棕榈酸(C16:0)含量最高。单不饱和脂肪酸(MUFA)中,反式油酸(C18:1n9t)含量最高。多不饱和脂肪酸(PUFA)中,亚油酸(C18:2n6c)含量最高。【结论】通过对哈萨克羊胴体分析和肌内脂肪酸成分分析发现,周岁哈萨克羊屠宰性能测定结果与前人研究结果一致,尾脂占胴体7.92%~12.54%。哈萨克羊肌内脂肪酸中含有丰富的ω-3和ω-6多不饱和脂肪酸,具有良好的保健作用。

补喂不同水平半胱胺锌对哈萨克羊生长性能和消化代谢的影响

本试验旨在研究补喂不同水平半胱胺锌(Zn-CS)对哈萨克羊生长性能和消化代谢的影响。选取3月龄左右、体重(26.98±1.21)kg且健康的哈萨克羊公羊24只,随机分为4组,每组6只,单栏饲养。对照组(CON组)饲喂基础饲粮,试验组饲喂基础饲粮的基础上分别补喂5(5 Zn-CS组)、10(10 Zn-CS组)和15 mg/kg BW Zn-CS(15 Zn-CS组),进行为期52 d(预试期7 d,正试期45 d)的补喂试验。试验期间,每天记录羊只采食量,分别于试验开始前及试验结束时对所有羊只称重;于正试期第30天晨饲前采集羊只颈静脉血液;从第31天开始采用全收粪收尿法进行为期5 d的消化代谢试验。结果显示:1)与CON组相比,10 Zn-CS组和15 Zn-CS组哈萨克羊的体增重和平均日增重显著提高(P<0.05),料重比显著降低(P<0.05)。2)15 Zn-CS组的粗蛋白质、粗脂肪表观消化率显著高于CON组(P<0.05)。3)15 Zn-CS组的氮沉积量、氮沉积率均显著高于CON组(P<0.05);5 Zn-CS组、10 Zn-CS组和15 Zn-CS组相较于CON组尿磷显著降低(P<0.05),摄入锌、粪锌显著提高(P<0.05);15 Zn-CS组较5 Zn-CS组尿锌显著降低(P<0.05)。4)与CON组相比,15 Zn-CS组血浆中生长抑素水平显著降低(P<0.05),10 Zn-CS组血浆中尿素氮含量显著降低(P<0.05)。由此可见,补喂Zn-CS能够提高哈萨克羊的生长性能,降低血浆中生长抑素水平,提高羊只对养分的消化代谢。在本试验条件下,综合各项试验结果,Zn-CS的最佳补喂水平为15 mg/kg BW。