共查询到20条相似文献，搜索用时 203 毫秒
1.
选取105头延边黄牛为研究对象,利用克隆测序的方法寻找延边黄牛甲状腺球蛋白(thyroglobulin,TG)基因多态性,采用PCR-RLFP方法进行多态性检测,并与胴体和肉质性状进行了关联分析。结果表明,在TG基因第48外显子上发现C218T和A430G2个突变位点,其中C218T位点的不同基因型与大理石花纹存在显著相关,CC基因型个体大理石花纹等级显著高于CT型个体(P<0.05)。A430G位点的不同基因型与宰前活重和眼肌面积存在显著相关,GG基因型个体的宰前活重和眼肌面积显著高于AA型和AG型个体(P<0.05)。其他性状在2个位点的不同基因型间差异不显著。因此,C218T和A430G位点可能是影响延边黄牛胴体和肉质性状的分子标记。 相似文献
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《养猪》2019,(6)
研究SIM1基因多态性与从江香猪胴体性状的关联性,寻找影响从江香猪胴体性状的数量性状基因座(QTL),为分子标记辅助选择提供依据;利用DNA直接测序技术,对从江香猪SIM1基因的C77T、C225T、A426G位点进行基因分型,采用SHEsis在线软件构建单倍型。在受试群体中,发现SIM1基因的3个SNP位点均有3种基因型,构建7种单倍型;最小二乘分析发现,3个SNP位点与肌内脂肪、眼肌面积、皮厚之间差异均不显著(P0.05),C77T、A426G位点与从江香猪背膘厚差异显著(P0.05);MM基因型、CC基因型、GG基因型的肌内脂肪和眼肌面积高于其他基因型;NN基因型、TT基因型、AA基因型的背膘厚和皮厚低于其他基因型;肌内脂肪最高的为MMCCAA聚合基因型,眼肌面积最高的为MNCCGG聚合基因型;背膘厚和皮厚最低的均为MNTTAA聚合基因型。可以考虑将MM基因型、CC基因型、GG基因型以及MMCCAA聚合基因型、MNCCGG聚合基因型作为影响从江香猪肌内脂肪和眼肌面积的有利基因型,将NN基因型、TT基因型、AA基因型以及MNTTAA聚合基因型作为影响背膘厚和皮厚有利基因型。 相似文献
3.
牛TG基因启动子区遗传变异与肉质和胴体性状的相关性研究 总被引：1，自引：0，他引：1
以8个肉牛品种为试验材料,扩增TG基因启动子区,测序后发现G82A和C422T 2个突变位点。利用SAS软件采用最小二乘法拟合线性模型将2个位点的不同基因型与牛胴体组成和肉质性状进行关联分析。结果发现,C422T位点与先前报道的大理石花纹等级无相关性,与其它胴体组成和肉质性状也未发现相关性。位于C422T位点上游的G82A位点与宰前活体质量和眼肌面积显著相关（P〈0.05）,GG为有利基因型,G等位基因为有利等位基因。因此,G82A可能是影响牛胴体性状的分子标记。 相似文献
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《养猪》2019,(5)
试验研究MC4R基因多态性与从江香猪胴体性状的关联性,寻找影响从江香猪胴体性状的数量性状基因座(QTL),为分子标记辅助选择提供依据;利用DNA直接测序技术,对从江香猪MC4R基因的G1577A、G1699A、T1702A位点进行基因分型,采用SHEsis在线软件构建单倍型。在受试群体中,发现MC4R基因的3个SNP位点均有3种基因型,构建4种单倍型,其中H3、H4、H1为主要单倍型,频率分别为42.3%、29.0%、25.7%;最小二乘分析发现,3个SNP位点与肌内脂肪、眼肌面积、背膘厚、皮厚差异性均不显著(P0.05)。在G1577A位点上,GA基因型的肌内脂肪、背膘厚、皮厚指标依次高于GG基因型和AA基因型;而眼肌面积为:GG基因型依次高于GA基因型和AA基因型。对于G1699A位点和T1702A位点,肌内脂肪为:EF基因型EE基因型FF基因型,MN基因型MM基因型NN基因型;眼肌面积、背膘厚、皮厚为:EE基因型EF基因型FF基因型,MM基因型MN基因型NN基因型。可以考虑将GA、EF、MN基因型作为影响从江香猪肌内脂肪的有利基因型,将GG、EE、MM基因型作为影响眼肌面积的有利基因型,将AA、FF、NN基因型作为影响背膘厚和皮厚有利基因型。 相似文献
5.
中国西门塔尔牛CAPN1基因SNPs及其与经济性状关联分析 总被引：3，自引：1，他引：2
本研究旨在分析CAPN1基因部分SNPs与中国西门塔尔牛经济性状的关联性.试验选取同龄、同场的135头中国西门塔尔牛为材料,利用PCR-RFLP方法检测CAPN1 316和CAPN1 4751 2个SNPs位点的多态性,并进行方差分析.结果发现,CAPN1 316 SNP位点与大理石花纹显著相关(P＜0.05),杂合子AB基因型个体的大理石纹评分显著高于AA和BB基因型个体(P＜0.05);CAPN1 4751位点与大理石花纹和剪切力显著相关(P＜0.05),大理石花纹性状中杂合子AB基因型个体评分显著高于AA基因型个体,剪切力性状中BB基因型个体显著高于AA基因型个体.结果表明,CAPN1 316和CAPN1 4751位点适合用于中国西门塔尔牛眼肌、肌肉大理石花纹的分子标记选择. 相似文献
6.
《畜牧兽医学报》2015,(10)
旨在探讨SIRT1和SIRT2基因的多态性与秦川牛肉用性状的关系,寻找与秦川牛肉用性状相关的分子标记。本研究利用DNA测序和PCR-PFLP方法检测秦川牛SIRT1和SIRT2基因的多态位点并对其进行基因分型,同时分析了单个多态位点不同基因型及合并基因型与秦川牛肉用性状的关联性。结果发现,在SIRT1基因3′侧翼区检测到两个多态位点(G25764A和A25846G),同样在SIRT2基因3′侧翼区也检测到两个突变位点(C19501T和C19518T)。关联性分析表明,在本试验所选取的505头秦川牛样本中,G25764A位点上AA基因型个体的眼肌面积极显著高于AB基因型(P0.01);A25846G位点上AA基因型个体的眼肌面积与AB和BB两组基因型分别存在显著性差异(P0.05)和极显著性差异(P0.01);C19501T位点的不同基因型对眼肌面积和肌间脂肪影响显著(P0.05),优良基因型为AA;C19518T的BB基因型个体背膘厚显著高于AA基因型(P0.05)。通过合并基因型发现,AB-BB-AA-BB的各个肉用性状表现最优(P0.01或P0.05)。以上结果提示,SIRT1和SIRT2基因单核苷酸多态性及合并基因型对秦川牛肉用性状有一定的影响,可以作为进行秦川牛肉用性状分子标记辅助选择的候选基因。 相似文献
7.
《家畜生态学报》2021,42(9)
为研究早胜牛CD36基因第三外显子的多态性及其与生长及肉用性状的关联性,选取300头健康的早胜肉牛,采用PCR-SSCP技术、DNA测序技术对早胜牛CD36基因第三外显子进行遗传多态性分析,通过SPSS 19.0软件分析SNP位点与早胜牛生长性状和肉用性状的关联性,采用实时荧光定量PCR技术检测早胜牛不同组织器官中CD36基因的表达特性,分析其遗传变异与生长性能的关系。结果表明,CD36基因第三外显子在59 415 bp处存在一个SNP,具有GG、GC和CC 3种基因型;关联分析显示,G59415C位点,CC和GC型体重极显著高于GG型(P0.01),CC型体斜长显著高于GG型(P0.05),CC型的宰前活重、胴体重显著高于GG型(P0.05),背膘厚度显著高于GG型和GC型(P0.05),肌内脂肪含量极显著高于GG和GC型(P0.01);荧光定量PCR检测显示,腿肌、背最长肌和肝脏中mRNA表达量以CC型最高,GC型次之,GG型最低,差异不显著(P0.05)。说明G59415C位点对早胜牛生长性状和肉用性状影响较大,可作为生长性状和肉用性状分子标记位点,CC型为优势基因型,可作为生长性状和肉用性状的候选基因型。 相似文献
8.
试验旨在探究CLPG(Callipyge)与MSTN(Myostatin)基因作为绵羊生长性状候选基因的可能性,调查与绵羊生长性状相关的分子遗传标记。本试验以133只澳洲白羊×杜泊羊×湖羊杂交绵羊为研究对象,利用PCR产物直接测序及PCR-RFLP技术检测CLPG与MSTN基因的单核苷酸多态性,然后通过SPSS22.0软件GLM统计模型分析多态位点不同基因型及聚合基因型与绵羊生长性状的关联性。测序结果表明,CLPG基因STS序列232bp处检测到C→T突变位点C1,MSTN基因3'UTR区检测到G→A突变位点M1。PCR-RFLP分析显示,C1位点表现为2种基因型:CC和CT;M1位点表现为2种基因型:GG和GA。关联分析表明,C1位点与绵羊背膘厚和眼肌面积显著或极显著相关(P<0.05;P<0.01),M1位点与绵羊体重、管围、背膘厚和眼肌面积显著或极显著相关(P<0.05;P<0.01)。聚合基因型对体重、背膘厚和眼肌面积影响极显著(P<0.01)。研究揭示CLPG与MSTN基因多态性及其聚合基因型对绵羊生长性状具有显著影响,C1和M1位点可以考虑作为绵羊生长性状的有效遗传标记。 相似文献
9.
旨在研究秦川牛IRS-1基因外显子的多态性,及其与秦川牛体尺和肉质性状的相关性。选取384头同等饲养条件下的18～24月龄健康秦川牛母牛为研究对象,采用PCR-SSCP技术结合DNA测序技术检测IRS-1基因外显子上存在的SNPs位点,并将其与秦川牛体尺和肉质性状进行关联分析。经DNA测序发现,在IRS-1基因外显子的2 346(B1位点)和2 394bp处(B2位点)分别发生了G→A和C→G突变,经分析发现,分别为氨基酸序列第782处Glu和798处Leu的同义突变。通过SSCP带型分析分别出现CC、CD和AA、AB 2种基因型,均未检测出第3种纯合基因型;卡方检验显示,B1位点在所检测牛群中处于Hardy-Weinberg平衡状态(P>0.05),而B2位点则处于Hardy-Weinberg极度不平衡状态(P<0.01);且B1处CC基因型为优势基因型,C为优势等位基因,处于低度多态状态;B2处基因型AA为优势基因型,A为优势等位基因,处于低度多态状态;关联分析表明,B1位点不同基因型个体间在体斜长、腰角宽、胸围和眼肌面积方面差异显著(P<0.05),B2位点在腰角宽、胸深和背膘厚方面差异显著(P<0.05)。将2个突变位点合并基因型进行单倍型分析发现,双杂合基因型个体(ABCD)除背膘厚和肌间脂肪含量外其他所分析的各性状均显著高于其他基因型组合,且多标记位点的组合效应值高于单标记位点。结果提示,IRS-1基因对秦川牛体尺及部分肉质性状有显著的影响,可以作为秦川肉牛新品系培育早期选择的候选基因,其中组合ABCD可能是影响秦川牛体尺和胴体性状的最佳基因型组合。 相似文献
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12.
M. Szydlowski M. Stachowiak M. Mackowski M. Kamyczek R. Eckert M. Rozycki M. Switonski 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2004,121(3):149-155
Porcine leptin gene (LEP) and its association with production traits was analysed in the Polish Large White (PLW, n = 135), Polish Landrace (PL, n = 120) and synthetic line 990 (L990, n = 184). Two fragments of exon 3 of LEP were studied with the use of RFLP and SSCP techniques. The frequencies of C allele for the T3469C polymorphic site were 0.11, 0.10 and 0.11 in PLW, PL and L990, respectively. Phenotypic data were collected for the average daily weight gain, the feed conversion ratio, the weight of abdominal fat, backfat thickness (five measurements), intramuscular fat, meat content, loin weight, loin muscle area, ham weight and ham cut weight. The contrasts between TT and TC genotypes at the T3469C polymorphic site were estimated in the unitrait Animal Model with genotype at the RYR1 locus included. The lowest p values occurred for association test between T3469C polymorphism and intramuscular fat content in PLW (0.26 ± 0.14%, p = 0.05) and loin weight in L990 (?0.32 ± 0.13 kg, p = 0.01). We conclude that the detected associations are population‐specific and the analysed polymorphism of the LEP gene does not contribute directly to genetic variability of growth and carcass traits in pigs. 相似文献
13.
GUO Zhen-gang ZHANG Li-chun CAO Yang YU Yong-sheng LUO Xiao-tong JIN Hai-guo 《中国畜牧兽医》2013,40(10):184-188
In order to study the effect of myostatin (MSTN) gene on the meat performance of Local Yellow cattle in China,selecting 2 Local cattle breeds (Grassland Red bull,Yanbian cattle) as the research object,four binary hybrid cattle group (Germany Yellow cattle×Simmental,Limousin×Simmental,Charolais×Simmental and Red Angus×Simmental) as reference.PCR-RFLP and DNA sequencing methods were conducted to detect single nucleotide polymorphism of MSTN gene in two Chinese native cattle and four cross cattle,and analyzed the correlations between single nucleotide polymorphism of China Red Steppe MSTN gene and slaughter traits.The sequence analysis showed that there was no mutations in the MSTN gene exon 3,a C5358A mutation of 3'-UTR of MSTN gene was found,which made the AclⅠrestriction enzyme site disappeared,all cattle groups showed polymorphism which was formed two genes as A,C, and 3 genotypes as AA,CA and CC, respectively.The research results suggested that AA genotype in groups of four hybrid cattle had dominant advantage and the genotype frequency was apparently higher than two groups of Chinese Native cattle for the test of independence,allele A was expressed the preferential allelic,the frequencies of CA,CC and AA genotypes showed a little variation between two cross cattle and Native cattle,and the frequency of allele C was apparently higher than allele A,so allele C was designed the preferential allelic in the local population.While correlations between different genotypes of China Red Steppe and slaughter traits analysis showed that AA genotype individual net meat percentage and eye muscle area were significantly higher than CA and CC genotype individuals (P<0.05),but other slaughter straits had no significant differences in three genotypes(P>0.05).These results provided a useful reference for research of the meat performance of China Red Steppe in the molecular breeding field. 相似文献
14.
PLIN基因多态性与秦川牛胴体、肉质性状的相关性研究 总被引：3，自引：0，他引：3
旨在研究PLIN基因第3、4外显子多态性与秦川牛部分产肉性状的关系。以相同饲养条件下18~24月龄的405头秦川牛为研究对象,利用PCR-SSCP方法和测序技术,对PLIN基因第3、4外显子进行SNPs位点检测,并将发现的SNPs位点与部分产肉性状进行关联性分析。结果,在第3外显子的156 bp处发生T→C突变,第4外显子的14 bp处发生C→T突变。方差分析表明:AB基因型个体的宰前活体质量、胴体质量、背膘厚和眼肌面积显著高于AA和BB基因型个体(P0.05),而且相对于AA基因型个体达到差异极显著水平(P0.01);DE基因型个体的胴体长、胴体胸深和背膘厚显著高于DD和EE基因型个体(P0.05),DD基因型个体的肌肉嫩度极显著高于EE和DE基因型个体(P0.01)。研究显示,PLIN基因单核苷酸多态性对秦川牛脂肪沉积有一定的影响,可作为影响胴体和肉质的候选基因,指导肉牛的育种工作。 相似文献
15.
以柠檬酸合成酶基因（citrate synthetase,CS）为候选基因,分析了该基因外显子3的遗传多态性与西门塔尔牛肉质性状的相关关系。选用95头西门塔尔牛为试验材料,采用PCR-RFLP的方法对该基因的外显子多态性进行检测,并利用SPSS软件对该外显子多态性与肉质性状的相关性进行分析。结果表明：CS基因第三外显子第206bp处存在G/A突变,该基因多态性与脂肪颜色呈显著相关,AA型显著高于BB型。对其他性状的影响差异不显著。通过研究CS基因外显子的多态性,为西门塔尔牛利用该基因的多态性进行分子育种提供了试验依据。 相似文献
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《中国畜牧杂志》2017,(3)
研究采用PCR-RFLP技术分析苏姜猪、姜曲海猪、长白猪群体A-FABP基因遗传多态性,并用统计学方法分析基因座多态与肉质性状的相关性。结果表明:3个猪种A-FABP基因内含子1均具有Bsm I酶切多态性,分别检测到3种基因型(AA、AB和BB),χ~2适合性检验显示,3个猪种A-FABP基因型分布处于Hardy-Weinberg平衡(P0.05)。多态信息含量(PIC)分析显示,3个品种猪均为中度多态;基因型与肉质性状关联分析显示,不同基因型肌内脂肪含量、大理石纹差异显著,大理石纹AA、AB型显著高于BB型(P0.05),肌内脂肪含量AA显著高于AB、BB型(P0.05)。结论显示,苏姜猪、姜曲海猪、长白猪A-FABP基因intron 1多态性对肉质性状影响显著。 相似文献
17.
To explore the influence of Gaopo pig myostatin (MSTN) gene polymorphism on meat quanlity traits (moisture,crude fat,crude protein,crude ash, loin muscle area, marbling score, pH value, color of meat,tenderness,drip loss, water loss rate), MSTN gene was chosen as a candidate gene for research meat quality traits in this study. 50 Gaopo pigs at 10 months old were selected,the single nucleotide polymorphism (SNP) of three exons of MSTN gene in Gaopo pig were detected by direct sequencing of PCR amplification products, and the correlation between MSTN gene SNP and meat quality traits was analyzed using SPSS 20.0 software. The results showed that a C/T mutation had been found at 63 bp of MSTN gene exon 3,the site was silent mutation, and did not caused changes of encoding amino acid. Genotype analysis showed only three samples had mutations in the site, CC genotype was the dominant type and allele C was the dominant gene, but there was no TT homozygous genotype. The test of Hardy-Weinberg equilibrium showed the research group obeyed the genetic equilibrium (P>0.05). Population genetic parameter analysis showed the heterozygosity (He) of C63T was lower, and had a low variation in Gaopo pig population. Polymorphism information content (PIC) analysis showed that it was a low polymorphic loci (PIC<0.25), and the site could provide a little genetic imformation. There was no significant difference between the different genotypes and meat quality traits (P>0.05).Given the above, the polymorphism of MSTNgene exon was found in Gaopo pig, with less variation and relatively conservative.It's needed to expand the number of sample for further explore whether the site could be considered as genetic markers for meat quality traits of Gaopo pig or not. 相似文献
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LI Wen-tong LIU Ying ZHOU Rong SHEN Zi-quan DONG Sheng-hua SONG Xiao-tao WANG Yue-jiang TANG Hui 《中国畜牧兽医》2017,44(7):2057-2064
To further understand the germplasm characteristics of Jiangquan Black pig,100 kg Jiangquan Black pigs (10 barrows, 10 sows) and 10 Duroc×Landrace×Yorkshire (DLY) pigs under the same conditions were randomly selected to analyse the slaughter performance and meat quality according to related rules. After slaughtered,the carcass index (carcass weight, loin muscle area, carcass length and backfat thickness etc), meat quality physical indicators (pH, meat color, marbling, drip loss etc), gerneral chemical index (the contents of crude protein, intramuscular fat, moisture and ash etc) and the proportion of amino acids in Jiangquan Black pig were analyzed. The results showed that, Jiangquan Black pig carcass lean meat rate was relatively low, the loin muscle area was reduced by about 30% (P<0.05) compared with DLY pig, while the backfat thickness was higher than that of DLY pig (P<0.05). The meat color, marbling, drip loss, cooking loss, water loss rate index and intramuscular fat content of Jiangquan Black pig were significantly better than that of DLY pigs (P<0.05), the rate of water loss and drip loss and cooking loss were decreased by 4.0%, 3.1% and 2.7%, intramuscular fat content increased by 150.0%. Therefore, The lean yield of Jiangquan Black pig was less than DLY pig, but water retention property, intramuscular fat content, meat color, marbling, meat quality indexes were significantly better than that of DLY pig. In conclusion, Jiangquan Black pig could provide good quality pork for consumers. 相似文献
19.
This experiment was conducted to explore the association between perilipin (PLIN) gene and carcass and meat quality traits in Yanbian Yellow cattle.In this study,70 30-month-old healthy Yanbian Yellow cattle were used as experimental materials,the blood of jugular vein and its 12-13 intercostal longissimus muscle dorsi were collected to extract DNA samples of Yanbian Yellow cattle,and determine the carcass and meat quality characteristics.The SNP of PLIN gene was detected by direct sequencing,and the correlation analysis was conducted based on the carcass and meat quality data of Yanbian Yellow cattle and the genetic polymorphism of PLIN gene.The results showed that there were 2 SNPs of PLIN gene exon 3 in Yanbian Yellow cattle:g.103 C→T and g.156 T→C,both of them were missense mutations.g.103 C→T contained two genotypes:CC and CT,CC genotype was the dominant genotype,the genotype frequency was 0.81,C was the dominant allele,the gene frequency was 0.90.The intramuscular fat,pre slaughter weight,carcass weight and back fat thickness of CT genotype was significantly higher than those of CC genotype(P<0.05).g.156 T→C contained two genotypes:TT and TC,TT genotype was the dominant genotype,the genotype frequency was 0.83,T was the dominant allele,the gene frequency was 0.92.The pre slaughter weight,carcass weight and back fat thickness of TC genotype were significantly higher than those of TT genotype (P<0.05).Chi square test showed that the two SNPs of PLIN gene in Yanbian Yellow cattle reached Hardy-Weinberg equilibrium (P>0.05),and belonged to low polymorphism (PIC<0.25).In conclusion,g.103 C→T and g.156 T→C of PLIN gene had potential effect on carcass and meat quality traits in Yanbian Yellow cattle,and could be used as a candidate gene and potential molecular marker of Yanbian Yellow cattle. 相似文献
20.
为探究延边黄牛脂滴包被蛋白（perilipin，PLIN）基因遗传多态性及其对胴体和肉质性状的影响，试验选取70头30月龄健康延边黄牛公牛，采集颈静脉血液及其12~13肋间背最长肌以提取延边黄牛DNA样本，并测定胴体与肉质性状，采用直接测序方法检测PLIN基因SNP位点，结合延边黄牛胴体、肉质数据与PLIN基因遗传多态性进行关联分析。结果显示，在延边黄牛PLIN基因外显子3 103与156 bp处存在2个突变位点：g.103 C→T和g.156 T→C，均为错义突变。g.103 C→T位点存在CC、CT两种基因型，CC基因型为优势基因型（0.81），C基因为优势等位基因（0.90），表现为CT基因型个体脂肪含量、宰前重、胴体重、背膘厚均显著高于CC基因型个体（P<0.05）；g.156 T→C位点存在TC、TT两种基因型，TT基因型为优势基因型（0.83），T基因为优势等位基因（0.92），表现为TC基因型个体的宰前重、胴体重及背膘厚均显著高于TT基因型个体（P<0.05）。卡方检验结果表明，延边黄牛在PLIN基因外显子3的2个SNPs位点均达到Hardy-Weinberg平衡（P>0.05），杂合度较低，属于低度多态（PIC<0.25）。综上，PLIN基因g.103 C→T和g.156 T→C位点对延边黄牛部分胴体与肉质性状存在一定影响，该位点可作为延边黄牛胴体、肉质性状的潜在标记，PLIN基因可以作为延边黄牛品种选育的候选基因和潜在分子标记。 相似文献