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Guo Z, Lv L, Liu D, Ma H, Radović Č. Effect of SNPs on Litter Size in Swine. Curr Issues Mol Biol 2024; 46:6328-6345. [PMID: 39057020 PMCID: PMC11276056 DOI: 10.3390/cimb46070378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/22/2024] [Accepted: 06/06/2024] [Indexed: 07/28/2024] Open
Abstract
Although sows do not directly enter the market, they play an important role in piglet breeding on farms. They consume large amounts of feed, resulting in a significant environmental burden. Pig farms can increase their income and reduce environmental pollution by increasing the litter size (LS) of swine. PCR-RFLP/SSCP and GWAS are common methods to evaluate single-nucleotide polymorphisms (SNPs) in candidate genes. We conducted a systematic meta-analysis of the effect of SNPs on pig LS. We collected and analysed data published over the past 30 years using traditional and network meta-analyses. Trial sequential analysis (TSA) was used to analyse population data. Gene set enrichment analysis and protein-protein interaction network analysis were used to analyse the GWAS dataset. The results showed that the candidate genes were positively correlated with LS, and defects in PCR-RFLP/SSCP affected the reliability of candidate gene results. However, the genotypes with high and low LSs did not have a significant advantage. Current breeding and management practices for sows should consider increasing the LS while reducing lactation length and minimizing the sows' non-pregnancy period as much as possible.
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Affiliation(s)
- Zhenhua Guo
- Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Harbin 150086, China
| | - Lei Lv
- Wood Science Research Institute, Heilongjiang Academy of Forestry, No. 134 Haping Road, Harbin 150080, China
| | - Di Liu
- Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Harbin 150086, China
| | - Hong Ma
- Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Harbin 150086, China
| | - Čedomir Radović
- Department of Pig Breeding and Genetics, Institute for Animal Husbandry, Autoput 16, 11080 Belgrade, Serbia
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Helal M, Sameh J, Gharib S, Merghany RM, Bozhilova-Sakova M, Ragab M. Candidate genes associated with reproductive traits in rabbits. Trop Anim Health Prod 2024; 56:94. [PMID: 38441694 PMCID: PMC10914644 DOI: 10.1007/s11250-024-03938-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 02/20/2024] [Indexed: 03/07/2024]
Abstract
In the era of scientific advances and genetic progress, opportunities in the livestock sector are constantly growing. The application of molecular-based methods and approaches in farm animal breeding would accelerate and improve the expected results. The current work aims to comprehensively review the most important causative mutations in candidate genes that affect prolificacy traits in rabbits. Rabbits are a source of excellent-tasting meat that is high in protein and low in fat. Their early maturity and intensive growth are highly valued all over the world. However, improving reproductive traits and prolificacy in rabbits could be very tricky with traditional selection. Therefore, traditional breeding programs need new methods based on contemporary discoveries in molecular biology and genetics because of the complexity of the selection process. The study and implementation of genetic markers related to production in rabbits will help to create populations with specific productive traits that will produce the desired results in an extremely short time. Many studies worldwide showed an association between different genes and productive traits in rabbits. The study of these polymorphisms and their effects could be useful for molecular-oriented breeding, particularly marker-assisted selection programs in rabbit breeding.
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Affiliation(s)
- Mostafa Helal
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt.
| | - Jana Sameh
- Biotechnology Program, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
| | - Sama Gharib
- Biotechnology Program, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
| | - Rana M Merghany
- Department of Pharmacognosy, National Research Centre, Giza, 12622, Egypt
| | | | - Mohamed Ragab
- Poultry Production Department, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh, Egypt
- Animal Breeding and Genetics Department, National Institute for Agricultural and Food Research and Technology (INIA), Madrid, 28040, Spain
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3
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Vashi Y, Magotra A, Kalita D, Banik S, Sahoo NR, Gupta SK, Naskar S. Evaluation of candidate genes related to litter traits in Indian pig breeds. Reprod Domest Anim 2021; 56:577-585. [PMID: 33438244 DOI: 10.1111/rda.13895] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/23/2020] [Accepted: 01/11/2021] [Indexed: 11/28/2022]
Abstract
Improvement in litter traits is the key to profitable pig farming that directly enhances the economic standing of the farmers in developing countries. The present study aimed to explore oestrogen receptor (ESR), epidermal growth factor (EGF), follicle-stimulating hormone beta subunit (FSHβ), prolactin receptor (PRLR) and retinol-binding protein 4 (RBP4) genes as possible candidate genetic markers for litter traits in indigenous pigs of India. The breeds included in the study were Ghungroo, Mali, Niang Megha and Tenyi Vo, and the reproductive traits considered were litter size at birth (LSB), number born alive (NBA), litter weight at birth (LWB), litter size at weaning (LSW) and litter weight at weaning (LWW) at their first parity. PCR-RFLP and primer-based mutation detection methods were used to identify polymorphism, and associations between the genotypes and the traits were analysed using a general linear model. The Ghungroo pigs recorded the best litter performances among the breeds (p < .05, LWB p < .01). Different alleles and genotypes of the genes under study were detected. Short interspersed nuclear element (SINE) -/- genotype of FSHβ revealed significantly higher litter traits (p < .05, LSB p < .01). The LWW was also found to be significantly influenced by ESR BB and AB, EGF AB and BB, and PRLR CC genotypes (p < .05). Although we did not find statistically significant and consistently superior litter traits with respect to different genotypes of other studied genes than genotype SINE -/- of the FSHβ, PRLR CC genotype demonstrated superior performances for all the litter traits. Our study revealed the FSHβ as a potential candidate genetic marker for litter traits in indigenous pig breeds of India.
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Affiliation(s)
- Yoya Vashi
- ICAR-National Research Centre on Pig, Guwahati, India.,Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Ankit Magotra
- ICAR-National Research Centre on Pig, Guwahati, India.,Department of Animal Genetics and Breeding, Lala Lajpat Rai University of Veterinary & Animal Sciences, Hisar, India
| | | | - Santanu Banik
- ICAR-National Research Centre on Pig, Guwahati, India
| | - Nihar R Sahoo
- ICAR-National Research Centre on Pig, Guwahati, India
| | - Sanjay K Gupta
- ICAR-Indian Institute of Agricultural Biotechnology, Ranchi, India
| | - Soumen Naskar
- ICAR-National Research Centre on Pig, Guwahati, India.,ICAR-Indian Institute of Agricultural Biotechnology, Ranchi, India
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Dall’Olio S, Fontanesi L, Tognazzi L, Buttazzoni L, Gallo M, Russo V. ESR1andESR2gene markers are not associated with number of piglets born alive in Italian Large White sows. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2011.e35] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Balatsky VN, Saienko AM, Pena RN, Buslyk TV, Gibolenko OS. Genetic diversity of pig breeds on ten production quantitative traits loci. CYTOL GENET+ 2015. [DOI: 10.3103/s0095452715050023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Goliášová E, Dvořák J. The oestrogen receptor gene (ESR) PvuII polymorphism allele frequencies in Czech Large White and Landrace. ACTA UNIVERSITATIS AGRICULTURAE ET SILVICULTURAE MENDELIANAE BRUNENSIS 2014. [DOI: 10.11118/actaun200553020033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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7
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Deb R, Singh U, Kumar S, Kumar A, Singh R, Sengar G, Mann S, Sharma A. Genotypic to expression profiling of bovine calcium channel, voltage-dependent, alpha-2/delta subunit 1 gene, and their association with bovine mastitis among Frieswal (HFX Sahiwal) crossbred cattle of Indian origin. Anim Biotechnol 2014; 25:128-38. [PMID: 24555798 DOI: 10.1080/10495398.2013.836106] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Calcium channel, voltage-dependent, alpha-2/delta subunit 1 (CACNA2D1) gene is considered to be an important noncytokine candidate gene influencing mastitis. Scanty of reports are available until today regarding the role play of CACNA2D1 gene on the susceptibility of bovine mastitis. We interrogated the CACNA2D1 G519663A [A>G] SNP by PCR-RFLP among two hundreds Frieswal (HF X Sahiwal) crossbred cattle of Indian origin. Genotypic frequency of AA (51.5, n=101) was comparatively higher than AG (35, n=70) and GG (14.5, n=29). Association of Somatic cell score (SCS) with genotypes revealed that, GG genotypes showing lesser count (less susceptible to mastitis) compare to AA and AG. Relative expression of CACNA2D1 transcript (in milk samples) was significantly higher among GG than AG and AA. Further we have also isolated blood sample from the all groups and PBMCs were cultured from each blood sample as per the standard protocol. They were treated with Calcium channel blocker and the expression level of the CACNA2D1 gene was evaluated by Real Time PCR. Results show that expression level decline in each genotypic group after treatment and expression level of GG are again significantly higher than AA and AG. Thus, it may be concluded that GG genotypic animals are favorable for selecting disease resistant breeds.
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Affiliation(s)
- Rajib Deb
- a Molecular Genetics Laboratory, Project Directorate on Cattle, Indian Council of Agricultural Research, Meerut Cantt , Uttar Pradesh , India
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8
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Molecular advances in QTL discovery and application in pig breeding. Trends Genet 2013; 29:215-24. [DOI: 10.1016/j.tig.2013.02.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 02/12/2013] [Accepted: 02/13/2013] [Indexed: 11/21/2022]
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9
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Cloning of TPO gene and associations of polymorphisms with chicken growth and carcass traits. Mol Biol Rep 2013; 40:3437-43. [PMID: 23275198 DOI: 10.1007/s11033-012-2421-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 12/18/2012] [Indexed: 10/27/2022]
Abstract
Thyroid peroxidase (TPO), which located on the apical membrane surface of thyrocytes, is the key enzyme involved in thyroid hormone synthesis, mainly catalyses the iodination of tyrosine residues and the coupling of iodotyrosines on thyroglobulin to form thyroxine and triiodothyronine. The objectives of this study were to identify genetic polymorphisms of the chicken TPO gene and to analyze potential association between single nucleotide polymorphisms (SNPs) and growth and carcass traits in chicken. Partial sequences of TPO gene were cloned firstly. The nucleotide sequence was found to have 72 % identity with that of humans. The chicken TPO amino acid sequence was 71 %. Through polymerase chain reaction-restriction fragment length polymorphism and DNA sequencing methods, three novel mutations of the chicken TPO gene were detected in the F2 resource population from Gushi chickens and Anka broilers. The association analysis indicated that all of the three SNPs showed association with chicken growth at different periods. The g.29996C>T polymorphisms was significantly associated with body weight, breast bone length, pectoral angle at 12 weeks, claw weight and leg muscle weight (P < 0.05). In addition, individuals with the TT genotype had higher value for almost all the traits than CC and CT genotype. Meanwhile for CLW, the additive effects were significant (P < 0.05). Hence, we suggest that genotype TT can be regarded as a potential molecular marker for later growth and carcass traits in chicken.
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10
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Terman A, Kumalska M. The effect of a SNP in ESR gene on the reproductive performance traits in Polish sows. RUSS J GENET+ 2012. [DOI: 10.1134/s1022795412120137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Ozmen O, Seker I, Cinar Kul B, Ertugrul O. Haplotype variation of estrogen receptor-α (ER-α) gene exon 4 in Turkish sheep breeds. RUSS J GENET+ 2012. [DOI: 10.1134/s1022795412100067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Use of a bovine genome chip to identify new biological pathways for beef quality in cattle. Mol Biol Rep 2012; 39:10979-86. [PMID: 23053987 DOI: 10.1007/s11033-012-1999-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Accepted: 10/01/2012] [Indexed: 10/27/2022]
Abstract
The accumulation of muscle is largely influenced by the genetic background of cattle. Muscle tissue was collected from the longissimus muscle of Lilu beef cattle at 12, 18, 24 and 30 months old. Using meat quality analysis, we found that the Lilu beef cattle have good production and slaughter performance, the performance meets the criterion of beef cattle. Microarray analysis was able to identify a total of 4,219 genes that are differentially expressed (P ≤ 0.01) between the two groups of cattle (12 vs 18; 18 vs 24; 24 vs 30). Bioinformatics analysis results suggested that most of the differentially expressed genes are involved in the metabolic pathways and neuroactive ligand-receptor interaction pathways. In the future study that aims to look for genes relating to growth and meat quality, we will focus on the genes that have been shown to have a significant variation between groups and are involved in the two pathways.
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13
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Balatsky VN, Saenko AM, Grishina LP. Polymorphism of the estrogen receptor 1 locus in populations of pigs of different genotypes and its association with reproductive traits of large white sows. CYTOL GENET+ 2012. [DOI: 10.3103/s0095452712040020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Deng GX, Yuan ZR, Gao X, Li JY, Chen JB, Gao HJ, Xu SZ. Identification mutation of the CACNA2D1gene and its effect on somatic cell score in cattle. JOURNAL OF APPLIED ANIMAL RESEARCH 2011. [DOI: 10.1080/09712119.2011.558616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Single nucleotide polymorphism of CACNA2D1 gene and its association with milk somatic cell score in cattle. Mol Biol Rep 2011; 38:5179-83. [PMID: 21225462 DOI: 10.1007/s11033-010-0667-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2010] [Accepted: 12/12/2010] [Indexed: 10/18/2022]
Abstract
The objective of the present study was to identify polymorphisms of the CACNA2D1 gene, and to analyze associations between these polymorphisms and mastitis in several cattle breeds. Through PCR-RFLP methods and DNA sequencing, an allelic variant corresponding to the A→G mutations and Aspartic (Asp) to Glycine (Gly) amino acid replacement at positions 526745 in the exon 25 of bovine CACNA2D1 gene could be detected. Two alleles, A and G, and three genotypes, AA, AG and GG were defined. Genetic character in the studied populations indicated that the A526745G loci of CACNA2D1 gene was moderate polymorphism and fitted with Hardy-Weinberg equilibrium (P > 0.05). The effects of CACNA2D1 polymorphisms on somatic cell score (SCS) were analyzed and significant association was found between A526745G and SCS. The mean of genotype GG was significantly lower than those of genotype AG and AA (P = 0.0469). Information provided in this research could be useful in further studies to determine the role of CACNA2D1 gene in the mastitis resistance.
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16
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Novel SNPs of the bovine CACNA2D1 gene and their association with carcass and meat quality traits. Mol Biol Rep 2010; 38:365-70. [DOI: 10.1007/s11033-010-0117-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2009] [Accepted: 03/17/2010] [Indexed: 10/19/2022]
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17
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Genetic Polymorphisms of the CACNA2D1 Gene and Their Association with Carcass and Meat Quality Traits in Cattle. Biochem Genet 2010; 48:751-9. [DOI: 10.1007/s10528-010-9357-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2009] [Accepted: 03/23/2010] [Indexed: 10/19/2022]
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18
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Lemus-Flor C, Mejia-Mart K, Rodriguez- J, Barreras-S A, Herrera-Ha J, Alonso-Mor R. Genetic Diversity and Variation of ESR, RBP4 and FUT1 Genes in Mexican Creole and Yorkshire Pig Populations. ACTA ACUST UNITED AC 2009. [DOI: 10.3923/jbs.2009.878.883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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19
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Single nucleotide polymorphisms within the estrogen receptor beta gene are linked with reproductive indices in Japanese flounder, Paralichthys olivaceus. Comp Biochem Physiol B Biochem Mol Biol 2009; 154:62-7. [PMID: 19427917 DOI: 10.1016/j.cbpb.2009.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2009] [Revised: 05/02/2009] [Accepted: 05/02/2009] [Indexed: 11/23/2022]
Abstract
The objectives of this study were to characterize polymorphisms within the coding region of estrogen receptor beta (ERbeta) gene in a population of 57 female Japanese flounder (Paralichthys olivaceus) and to analyze the association of ERbeta polymorphisms with reproductive indices by polymerase chain reaction single-strand conformation polymorphism (PCR-SSCP). Two single nucleotide polymorphisms (SNPs), SNP1 (c.577delC) and SNP2 [c.A891T (p.Gln114Leu)], were identified in the ERbeta gene. A one-way ANOVA revealed that SNP1 was significantly associated with the gonadosomatic index (GSI) in female Japanese flounder (P < 0.05). And SNP2 was significantly associated with the serum 17beta-estradiol (E2) level and GSI (P < 0.05). Individuals with genotype AB of SNP2 had significantly higher serum E2 level and GSI than those of genotype AA (P < 0.05). Moreover, the hepatosomatic index (HSI), a marker for genetic effects, was significantly higher for diplotype D2 compared with the other three diplotypes (P < 0.05). These results obtained in this study suggested that SNP2 could influence reproductive endocrinology of female Japanese flounder and be useful as a potential candidate genetic marker for the selection of reproductive indices in female Japanese flounder.
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Liu M, Peng J, Xu DQ, Zheng R, Li FE, Li JL, Zuo B, Lei MG, Xiong YZ, Deng CY, Jiang SW. Association of MYF5 and MYOD1 Gene Polymorphisms and Meat Quality Traits in Large White × Meishan F2 Pig Populations. Biochem Genet 2008; 46:720-32. [DOI: 10.1007/s10528-008-9187-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Accepted: 05/30/2008] [Indexed: 10/21/2022]
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21
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Genetic Polymorphisms of MYL2 and ADCYAP1R1 Genes and Their Association with Carcass Traits in Finished Pigs. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2008. [DOI: 10.5187/jast.2008.50.3.301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Identification of polymorphisms and association analysis with meat quality traits in the porcine KIAA1717 and HUMMLC2B genes. Livest Sci 2007. [DOI: 10.1016/j.livsci.2006.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Braglia S, Ramírez O, Noguera JL, Tomás A, Ovilo C, Varona L. Comparison of genetic models for analysing the effects of a PvuII polymorphism in the oestrogen receptor 1 (ESR1) gene on prolificacy in an Iberian�נMeishan pig population. Anim Genet 2006; 37:454-8. [PMID: 16978173 DOI: 10.1111/j.1365-2052.2006.01500.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The effect of a previously reported PvuII polymorphism in oestrogen receptor 1 (ESR1) was analysed in an F(2) population of Iberian x Meishan pigs. We tested three hypotheses: (1) that a causal mutation was fixed in the parental populations, (2) that a causal mutation existed that was in complete linkage disequilibrium with the alleles of the PvuII polymorphism and (3) that a causal mutation existed in linkage disequilibrium within each parental population. The third model was the most plausible based on the available data. ESR1 alleles displayed different patterns of linkage disequilibrium with the causal mutation in each of the parental populations and the PvuII polymorphism was clearly not the causal mutation. As a consequence, the use of the ESR1 mutation for selection must be evaluated for a particular pig population before it is applied.
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Affiliation(s)
- S Braglia
- Area de Producció Animal, Centre UdL-IRTA, Lleida, 25198, Spain
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24
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Wu ZF, Liu DW, Wang QL, Zeng HY, Chen YS, Zhang H. Study on the Association Between Estrogen Receptor Gene (ESR) and Reproduction Traits in Landrace Pigs. ACTA ACUST UNITED AC 2006; 33:711-6. [PMID: 16939005 DOI: 10.1016/s0379-4172(06)60103-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
To study the potential use of estrogen receptor gene (ESR) as a genetic marker to improve the reproductive traits of pigs, the genotypes of the ESR PCR product digested by Pvu II were determined in 2,239 litters from 612 Landrace sows. The data of the first, second, and later parities were separately evaluated. Although the frequency of the B allele was much lower than that of the A allele, likelihood ratio test showed that the gene frequencies were in Hardy-Weinberg equilibrium. The effects of ESR of different parities were not equal. In summary, the sows with the BB genotype showed better performance for total number of piglets born (TNB) and number of piglets born alive (NBA), but had a lower average piglet weight at birth (AWB). It was concluded that ESR could be used as a marker for the selection of litter size in the Landrace population.
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Affiliation(s)
- Zhen-Fang Wu
- College ofAnimal Science, South China Agricultural University, Guangzhou
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Spötter A, Distl O. Genetic approaches to the improvement of fertility traits in the pig. Vet J 2006; 172:234-47. [PMID: 16426876 DOI: 10.1016/j.tvjl.2005.11.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2005] [Indexed: 11/29/2022]
Abstract
One of the major determinants for litter size in pigs is prenatal mortality. It occurs most frequently during the first few weeks of gestation and can be attributed to abnormalities in developmental processes during embryogenesis including trophoblastic elongation and blastocyst implantation. Improvement of litter size has been attempted by means of phenotypic selection. However, another promising approach in pursuit of this aim has been the use of genotypic information. Reproductive traits in general are well-suited for application of marker-assisted selection (MAS). The possibility of exerting selection criteria at the molecular level shortens the generation interval as the selection decision can take place early in the life of an animal. Moreover, in consideration of the sex-limited nature of reproductive traits, genotypic information allows for selection in the gender in which the trait cannot be directly observed. Accordingly, there has been considerable interest in mapping and identifying genes involved in the regulation of reproductive traits and in elucidating their expression patterns. This review offers a comprehensive, if not exhaustive, account of the efforts being made and the approaches currently used in this field. One approach has been to choose candidate genes a priori because of the physiological importance of the proteins they encode and their role in the reproduction of other mammals. The usefulness of candidate genes is then examined by association studies between genetic polymorphisms identified in the respective candidate genes and the phenotypic reproductive traits. The other approach discussed uses pre-existing or designed families for linkage analyses in order to map the location of quantitative trait loci (QTL) for the reproductive trait of interest. The results reported were not consistent among different studies but the QTL regions detected may be useful for identification of positional candidate genes in further molecular genetic studies. However, a better understanding of porcine reproduction requires that these functional genomic approaches are merged and integrated with detailed analyses of the proteome to establish linkages between predisposition and physiology.
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Affiliation(s)
- A Spötter
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Bünteweg 17p, 30559 Hannover, Germany.
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Horák P, Urban T, Dvorák J. The FUT1 and ESR genes--their variability and associations with reproduction in Prestice Black-Pied sows. J Anim Breed Genet 2005; 122:210-3. [PMID: 16130473 DOI: 10.1111/j.1439-0388.2005.00502.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The determination of genetic variability by means of molecular genetic markers FUT1 and ESR2, and the evaluation of their associations with reproduction traits in population of Prestice Black-Pied sows have been implemented. A lower frequency of the allele FUT1A than the frequency of the allele FUT1G in the FUT1 gene was ascertained. In the ESR2 polymorphism, a higher frequency of the allele ESR2A compared with the allele ESR2B was determined. In the second to sixth litters as well as in the first to sixth litters, a significantly lower number of piglets born alive and number of weaned piglets from sows of the FUT1/IFUT1A genotype was found. Moreover, the homozygotes FUT1G /FUT1G significantly exceeded sows of the FUT1A/FUT1A genotype in the total number of born piglets in the first to sixth litters. No significant effect of the ESR2 polymorphism on reproduction was observed.
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Affiliation(s)
- P Horák
- Department of Genetics, Mendel University of Agriculture and Forestry Brno, Czech Republic.
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Muñoz G, Ovilo C, Amills M, Rodríguez C. Mapping of the porcine oestrogen receptor 2 gene and association study with litter size in Iberian pigs. Anim Genet 2004; 35:242-4. [PMID: 15147399 DOI: 10.1111/j.1365-2052.2004.01141.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Genes encoding the oestrogen receptors (ESR) are considered candidate genes for prolificacy traits due to the key role these molecules play in the regulation of reproductive physiology. In this paper, we report the assignment of the pig ESR2 gene to porcine chromosome 1 by radiation hybrid mapping. Most of the ESR2 cDNA was sequenced from Iberian pig ovarian RNA samples and one A/G single nucleotide polymorphism (SNP) was found at exon 5, being associated with a Met/Val substitution at position 949. This SNP was genotyped using a PCR-RFLP (Hsp92II) protocol and its potential effect on litter size was evaluated in two Iberian pig populations. However, no statistically significant association between the ESR2 polymorphism and litter size was found.
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Affiliation(s)
- G Muñoz
- Departamento de Mejora Genética Animal, SGIT-INIA, Madrid, Spain.
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