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Kapritchkoff RTI, Okino CH, Niciura SCM, Bello HJS, Matos RS, Melito GR, Bressani FA, Esteves SN, Chagas ACDS. Association of β-globin polymorphisms and tolerance to haemonchosis in ewes and lambs of different sheep breeds. Vet Parasitol 2024; 328:110163. [PMID: 38513446 DOI: 10.1016/j.vetpar.2024.110163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/06/2024] [Accepted: 03/05/2024] [Indexed: 03/23/2024]
Abstract
Gastrointestinal nematodes (GIN), especially Haemonchus contortus, represent a significant challenge for sheep production. Given the global concern about GIN anthelmintic resistance, alternative control methods able to reduce the dependence on these drugs are highly advisable. Since previous studies have shown that sheep carrying the Hb-A allele of β-globin are more resistant to H. contortus, this study aimed to investigate the relationship between the different haplotypes (Hb-AA, Hb-AB and Hb-BB) and phenotypes in Santa Inês (SI), Texel (TX) and White Dorper (DO) breeds infected with H. contortus. Blood samples were collected from 180 ewes and 123 lambs of the three breeds for DNA extraction followed by qPCR using a hydrolysis probe to identify the β-globin haplotypes. Phenotypic data, including fecal egg count (FEC), packed cell volume (PCV), FAMACHA score and body condition score for ewes and lambs, as well as weight gain for lambs, were collected. The genotypic frequencies of β-globin for ewes and lambs were, respectively: 21.7% and 21.4% Hb-AA, 50% and 50% Hb-AB and 28.3% and 28.6% Hb-BB in SI; 0% and 0% Hb-AA, 18.6% and 9.4% Hb-AB and 81.4% and 90.6% Hb-BB in TX; and 0% and 0% Hb-AA, 13.1% and 0% Hb-AB and 86.9% and 100% Hb-BB in DO. In ewes, mean PCV differed (p<0.05) between the three haplotypes, with higher PCV in Hb-AA animals, followed by Hb-AB and Hb-BB. When considering each breed separately, SI Hb-AA ewes presented higher PCV (p<0.05), highlighting that even in a breed already considered resistant, animals with Hb-AA haplotype showed superior performance. Lambs with the Hb-AA haplotype exhibited a higher (p<0.05) mean PCV compared to those with Hb-AB and Hb-BB. The same pattern was found in SI when analyzing each breed separately. No significant association was found between β-globin haplotypes and FEC, FAMACHA score, body condition score, or weight gain. Nevertheless, given that anemia is the major clinical sign of haemonchosis, our findings on PCV reinforce that sheep carrying the Hb-A allele of β-globin are more tolerant to haemonchosis. This study may support the development of a valuable tool, targeting genetic selection for GIN control, reducing the dependence on anthelmintics and boosting sheep production worldwide.
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Affiliation(s)
- Rafaela Tami Ikeda Kapritchkoff
- Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, Jaboticabal, São Paulo 14884-900, Brazil.
| | - Cintia Hiromi Okino
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/n, Fazenda Canchim, P.O. Box 339, São Carlos, São Paulo 13560-970, Brazil
| | - Simone Cristina Méo Niciura
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/n, Fazenda Canchim, P.O. Box 339, São Carlos, São Paulo 13560-970, Brazil
| | - Hornblenda Joaquina Silva Bello
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/n, Fazenda Canchim, P.O. Box 339, São Carlos, São Paulo 13560-970, Brazil
| | - Renata Silva Matos
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/n, Fazenda Canchim, P.O. Box 339, São Carlos, São Paulo 13560-970, Brazil
| | - Glaucia Roberta Melito
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/n, Fazenda Canchim, P.O. Box 339, São Carlos, São Paulo 13560-970, Brazil
| | - Flavia Aline Bressani
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/n, Fazenda Canchim, P.O. Box 339, São Carlos, São Paulo 13560-970, Brazil
| | - Sérgio Novita Esteves
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/n, Fazenda Canchim, P.O. Box 339, São Carlos, São Paulo 13560-970, Brazil
| | - Ana Carolina de Souza Chagas
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, Km 234 s/n, Fazenda Canchim, P.O. Box 339, São Carlos, São Paulo 13560-970, Brazil
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Niciura SCM, Cruvinel GG, Moraes CV, Bressani FA, Malagó Junior W, Benavides MV, de Chagas ACS. PCR-based genotyping of SNP markers in sheep. Mol Biol Rep 2018; 45:651-656. [PMID: 29869739 DOI: 10.1007/s11033-018-4206-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 05/31/2018] [Indexed: 10/14/2022]
Abstract
Single nucleotide polymorphisms (SNPs) are the main type of variation in genome, enabling them to be associated with traits of economic importance in livestock. Genome-wide association studies (GWAS) have led to the discovery of SNPs associated with desirable traits in sheep. However, in these studies, SNPs are genotyped by high-throughput methods in genome scale, which are expensive and require sophisticated equipment and analysis methods. Therefore, the goal of this study was to develop a reliable, rapid, and inexpensive polymerase chain reaction (PCR)-based method to genotype a medium number of animals for a few candidate SNPs previously associated with desirable phenotypes in sheep by GWAS, using markers associated with gastrointestinal nematode resistance as a model. DNA extracted from white-blood cells of 150 sheep was submitted to PCR amplification followed by agarose gel electrophoresis and determination of banding pattern. Tetra-primer ARMS-PCR was successfully optimized after changes in annealing temperature; annealing and extension times; concentration of MgCl2 and DNA; ratios of inner, outer, forward and reverse primer; and addition of adjuvants, for genotyping the OAR2_14765360, OAR6_81718546, OAR11_62887032, and OAR12_69606944 SNPs in sheep. An extensive optimization of tetra-primer ARMS-PCR resulted in a suitable, simple, cost-effective PCR-based method of genotyping four SNP markers previously detected by chip arrays.
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Affiliation(s)
- Simone Cristina Méo Niciura
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, km 234, Fazenda Canchim, PO Box 339, São Carlos, SP, CEP 13560-970, Brazil.
| | | | - Caroline Valério Moraes
- Universidade Federal de São Carlos, Rodovia Washington Luiz, km 235, São Carlos, SP, CEP 13566-905, Brazil
| | - Flavia Aline Bressani
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, km 234, Fazenda Canchim, PO Box 339, São Carlos, SP, CEP 13560-970, Brazil
| | - Wilson Malagó Junior
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, km 234, Fazenda Canchim, PO Box 339, São Carlos, SP, CEP 13560-970, Brazil
| | - Magda Vieira Benavides
- Embrapa Pecuária Sul, Rodovia BR-153, Km 632,9, Vila Industrial, Bagé, RS, CEP 96401-970, Brazil
| | - Ana Carolina Souza de Chagas
- Embrapa Pecuária Sudeste, Rodovia Washington Luiz, km 234, Fazenda Canchim, PO Box 339, São Carlos, SP, CEP 13560-970, Brazil
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Bressani FA, Tizioto PC, Giglioti R, Meirelles SLC, Coutinho R, Benvenuti CL, Malagó W, Mudadu MA, Vieira LS, Zaros LG, Carrilho E, Regitano LCA. Single nucleotide polymorphisms in candidate genes associated with gastrointestinal nematode infection in goats. Genet Mol Res 2014; 13:8530-6. [PMID: 25366747 DOI: 10.4238/2014.october.20.29] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cytokines are small cell-signaling proteins that play an important role in the immune system, participating in intracellular communication. Four candidate genes of the cytokine family (IL2, IL4, IL13, and IFNG) were selected to identify Single Nucleotide Polymorphisms (SNPs) that might be associated with resistance to gastrointestinal endoparasites in goats. A population of 229 goats, F2 offspring from an F1 intercross was produced by crossing pure Saanen goats, considered as susceptible to gastrointestinal endoparasites, with pure Anglo-Nubian goats, considered resistant. Blood was collected for DNA extraction and fecal samples were also collected for parasite egg count. Polymorphisms were prospected by sequencing animals with extreme phenotype for fecal egg count (FEC) distribution. The association between SNPs and phenotype was determined by using the Fisher exact test with correction for multiple tests. Three of the 10 SNPs were identified as significant (P ≤ 0.03). They were found in intron 1 of IL2 (ENSBTA00000020883), intron 3 of IL13 (ENSBTA00000015953) and exon 3 of IFNG (ENSBTA00000012529), suggesting an association between them and gastrointestinal endoparasite resistance. Further studies will help describe the effects of these markers accurately before implementing them in marker assisted selection. This study is the pioneer in describing such associations in goats.
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Affiliation(s)
- F A Bressani
- Embrapa Pecuária Sudeste, São Carlos, SP, Brasil
| | - P C Tizioto
- Programa de Pós-Graduação em Genética Evolutiva e Biologia Molecular, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - R Giglioti
- Programa de Pós-Graduação em Genética e Melhoramento Animal, Universidade Estadual Paulista, Jaboticabal, SP, Brasil
| | - S L C Meirelles
- Departamento de Zootecnia, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - R Coutinho
- Universidade Federal do Rio Grande do Norte, Natal, RN, Brasil
| | - C L Benvenuti
- Universidade Federal do Rio Grande do Norte, Natal, RN, Brasil
| | - W Malagó
- Embrapa Pecuária Sudeste, São Carlos, SP, Brasil
| | - M A Mudadu
- Embrapa Pecuária Sudeste, São Carlos, SP, Brasil
| | - L S Vieira
- Embrapa Caprinos e Ovinos, Sobral, CE, Brasil
| | - L G Zaros
- Universidade Federal do Rio Grande do Norte, Natal, RN, Brasil
| | - E Carrilho
- Departamento de Química, Universidade de São Paulo, São Carlos, SP, Brasil
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