Polymorphism of Rs319699771 Locus of Anti-Diarrhea MUC13 Gene in Suhuai Pig Population and Their Association with Economic Traits
LIU ChenXi1,2, WANG BinBin1,2, PU Guang1,2, ZHANG Qian1,2, CAO Yang1,2, WANG Huan1,2, GAO Chen1,2, NIU PeiPei2,3, LI PingHua,1,2,3, HUANG RuiHua,1,2,31 Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095 2 Huaian Academy of Nanjing Agricultural University, Huaian Jiangsu 223005 3 Huaian New Rural Development Co. LTD of Nanjing Agricultural University, Huaian Jiangsu 223005
Abstract 【Background】 MUC13 gene is one of the main genes, which can regulate the infection of enterotoxigenic Escherichia coli F4ac, and cause diarrhea in piglets before weaning. The rs319699771 locus of the gene (G/A mutation) can accurately identify susceptible and resistant individuals, among which GG type is an anti-diarrhea genotype. The anti-diarrhea molecular breeding of Suhuai pig has been implemented by selecting GG genotype individuals, but whether the selection of GG genotype individuals will have adverse effects on other important economic traits, such as growth, carcass and meat quality, which is not yet clear. 【Objective】 The purpose of this study was to analyze the association between the locus and other economic traits to determine whether the molecular selection based on the rs319699771 locus of anti-diarrhea MUC13 gene would have adverse effects on other economic traits of Suhuai pig. 【Method】 In this experiment, 313 Suhuai fattening pigs weighting 87.61±0.54 kg were tested as experimental animals, and their carcass and meat quality traits were determined through slaughter. 261 Suhuai gilt pigs aging for 161.1±0.5 d were tested as experimental animals, and their growth and body size phenotype were also determined. At the same time, the corresponding ear tissue samples of Suhuai fattening pigs and gilt pigs were collected to extract tissue DNA. After Multiplex-PCR reactions, the polymorphism of the rs319699771 locus of MUC13 gene was detected in each pig. The association analysis between the polymorphism genotype of the rs319699771 locus of MUC13 gene and meat quality, carcass and growth traits were conducted by using the general linear model in SAS software. 【Result】 The results of polymorphism of rs319699771 locus of MUC13 gene showed that among the frequency of anti-diarrhea G allele of rs319699771 locus of MUC13 gene, the male and female pigs of the fattening pigs reached 0.695 and 0.634, respectively, and the anti-diarrhea GG genotype frequency was 0.467 and 0.373, respectively, in the male and female fattening pigs. While the locus G allele among the male and female pigs of the gilt reached 0.690 and 0.705, respectively, and the anti-diarrhea GG genotype frequency was 0.508 and 0.480, respectively, in the male and female gilt pigs. This indicated that the frequency of anti-diarrhea gene in Suhuai pig belonged to a higher level, and it could be feasible for the further improvement of anti-diarrhea GG frequency in the Suhuai pig through molecular breeding. The association analysis between polymorphism of rs319699771 locus of MUC13 gene and economic traits of Suhuai pig showed that there was no significant association between the locus’s polymorphism and carcass, meat quality traits in the fattening pigs (P>0.05), and it could be seen that increasing the breeding of the rs319699771 locus of MUC13 gene in Suhuai fattening pigs would not affect the carcass and meat quality traits. The locus’s polymorphism in the gilt extremely associated with the ham circumference index (P<0.01), and on average, the ham circumference of GG type individuals at this locus was about 1.46 cm longer than that of AG type individuals, and about 3 cm longer than that of AA type individuals. Also, the locus tended to associate with daily gain and terminal measurement weight (P<0.10), GG type individuals showed an upward trend compared with AA and AG type individuals. All of the three traits, GG genotype was a favorable genotype. The results showed that the breeding of the anti-diarrhea GG genotype of this locus could improve the growth traits of Suhuai gilt pigs. 【Conclusion】 Based on these results, the anti-diarrhea allele frequency of the rs319699771 locus of MUC13 gene in Suhuai pig was high, and the anti-diarrhea breeding was feasible, and the anti-diarrhea ability of Suhuai pig could be improved by selecting and remaining resistant homozygous GG genotype of rs319699771 locus of MUC13 gene and raising the frequency of the resistant homozygous genotype. At the same time, it could also realize the improvements of ham circumference and daily gain of Suhuai pig. Keywords:Suhuai pig;MUC13 gene;anti-diarrhea;economic traits;association analysis
PDF (469KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 刘晨曦, 王彬彬, 蒲广, 张倩, 曹旸, 王欢, 高琛, 牛培培, 李平华, 黄瑞华. 苏淮猪抗腹泻MUC13基因rs319699771位点多态性 及其与经济性状的关联[J]. 中国农业科学, 2019, 52(8): 1449-1457 doi:10.3864/j.issn.0578-1752.2019.08.014 LIU ChenXi, WANG BinBin, PU Guang, ZHANG Qian, CAO Yang, WANG Huan, GAO Chen, NIU PeiPei, LI PingHua, HUANG RuiHua. Polymorphism of Rs319699771 Locus of Anti-Diarrhea MUC13 Gene in Suhuai Pig Population and Their Association with Economic Traits[J]. Scientia Acricultura Sinica, 2019, 52(8): 1449-1457 doi:10.3864/j.issn.0578-1752.2019.08.014
Table 3 表3 表3MUC13基因rs319699771位点多态性与育肥猪胴体性状关联性分析 Table 3Association analysis between polymorphism of rs319699771 locus of MUC13 gene and carcass performances of fattening pigs
基因型 Genotype
个体数 Number
胴体性状Carcass performances
胴体重 Weight of carcass (kg)
肋骨数 Number of ribs
胴体直长 Straight length of carcass (cm)
胴体斜长 Oblique length of carcass (cm)
6-7肋膘厚 Backfat thickness at 6-7 ribs (mm)
肩部最厚处膘厚 Backfat thickness at the thickest part of the shoulder (mm)
最后肋骨膘厚 Backfat thickness at the last rib (mm)
腰荐结合膘厚 Backfat thickness at the lumbosacral junction (mm)
三点平均背膘厚 Average backfat thickness (mm)
AA
26
55.89±1.45
30.33±0.75
88.14±0.75
73.97±0.69
29.17±1.26
34.11±1.28
20.06±1.08
22.48±1.40
25.56±1.11
AG
147
57.51±0.70
29.66±0.36
88.69±0.36
74.00±0.33
28.46±0.61
34.15±0.62
21.12±0.52
23.74±0.67
26.37±0.54
GG
140
57.35±0.71
29.82±0.37
88.60±0.37
73.96±0.34
28.87±0.61
34.45±0.63
21.93±0.53
23.59±0.68
26.67±0.54
P-value
0.5470
0.6778
0.7754
0.9955
0.7797
0.9064
0.1684
0.6795
0.6106
The different letters mean significant difference at 0.05 level in the same row 同列数字标不同字母表示差异显著(P<0.05)。
Table 4 表4 表4MUC13基因rs319699771位点多态性与育肥猪肉质性状关联性分析 Table 4Association analysis between polymorphism of rs319699771 locus of MUC13 gene and meat quality performances of fattening pigs
Table 5 表5 表5MUC13基因rs319699771位点多态性与后备猪生长性状关联性分析 Table 5Association analysis between polymorphism of rs319699771 locus of MUC13 gene and growth performances of gilt
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