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Registro Completo |
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Biblioteca(s): |
Embrapa Roraima. |
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Data corrente: |
15/09/2021 |
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Data da última atualização: |
15/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
McMANUS, C.; PAIVA, S. R.; CAETANO, A. R.; HERMUCHE, P.; GUIMARÃES, R. F.; CARVALHO JUNIOR, O. A.; BRAGA, R. M.; CARNEIRO, P. L. S.; MORAES, J. C. F.; SOUZA, C. J. H. de; FACO, O.; SANTOS, S. A.; AZEVEDO, H. C.; ARAUJO, A. M. de; FAÇANHA, D. A. E.; IANELLA, P. |
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Afiliação: |
CONCEPTA MCMANUS, Universidade de Brasília (UnB) - Brasília, DF, Brazil; SAMUEL REZENDE PAIVA, Cenargen; ALEXANDRE RODRIGUES CAETANO, Cenargen; POTIRA HERMUCHE, Universidade de Brasília (UnB) - Brasília, DF, Brazil; RENATO FONTES GUIMARÃES, Universidade de Brasília (UnB) - Brasília, DF, Brazil; OSMAR ABILIO CARVALHO JUNIOR, Universidade de Brasília (UnB) - Brasília, DF, Brazil; RAMAYANA MENEZES BRAGA, CPAF-RR; PAULO LUIZ SOUZA CARNEIRO, Universidade Estadual Do Sudoeste da Bahia (UESB) - Vitória da Conquista - BA, Brazil; JOSE CARLOS FERRUGEM MORAES, CPPSUL; CARLOS JOSE HOFF DE SOUZA; OLIVARDO FACO, CNPC; SANDRA APARECIDA SANTOS; HYMERSON COSTA AZEVEDO, CPATC; ADRIANA MELLO DE ARAUJO, CPAMN; DEBORA ANDRÉA E. FAÇANHA, Federal Rural University of the Semi-arid Region (UFERSA) - Mossoró, RN, Brazil; PATRICIA IANELLA, Cenargen. |
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Título: |
Landscape genetics of sheep in Brazil using SNP markers. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Small Ruminant Research, v. 192, e106239, 2020. |
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DOI: |
https://doi.org/10.1016/j.smallrumres.2020.106239 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The aim of this study was to explore spatial patterns of genetic structure in sheep breeds sampled in Brazil using Single Nucleotide Polymorphisms (SNPs) in order to evaluate whether or not the genetic and geographic dis-tances are interrelated in this species. Samples genotyped using the 50KSheepSNPChip (Illumina) included 215 animals from eight different sheep breeds. All collection sites were georeferenced and data analyzed to determine geographic patterns from genetic data. To evaluate the correlation between genetic and geographic distances Mantel tests, Allelic Aggregation Index Analyses (AAIA), and spatial autocorrelation were performed. Genetic Landscape Shape procedure and Monmonier?s Algorithm were used to generate graphical visualization of the genetic distances across the landscape. The observed correlation observed between genetic and geographical distances was 0.552 (P <0.00099). Observed AAIA results (Rave =0.16, P <0.001) indicated a non-random distribution of genotypes across the landscape. High genetic differentiation was observed in the Southern re-gions of Brazil, separating wool and hair sheep. Low genetic distances were observed between flocks and breeds from north and center-west regions, and may be the result of unrecorded introgressions resulting from past unknown crossbreeding events. Observed Spatial Autocorrelation Analyses results indicate a minimum distance of 400 km should be used between collection sites to maximize genetic variability in future germplasm samplings for conservation of genetic resources. MenosAbstract: The aim of this study was to explore spatial patterns of genetic structure in sheep breeds sampled in Brazil using Single Nucleotide Polymorphisms (SNPs) in order to evaluate whether or not the genetic and geographic dis-tances are interrelated in this species. Samples genotyped using the 50KSheepSNPChip (Illumina) included 215 animals from eight different sheep breeds. All collection sites were georeferenced and data analyzed to determine geographic patterns from genetic data. To evaluate the correlation between genetic and geographic distances Mantel tests, Allelic Aggregation Index Analyses (AAIA), and spatial autocorrelation were performed. Genetic Landscape Shape procedure and Monmonier?s Algorithm were used to generate graphical visualization of the genetic distances across the landscape. The observed correlation observed between genetic and geographical distances was 0.552 (P <0.00099). Observed AAIA results (Rave =0.16, P <0.001) indicated a non-random distribution of genotypes across the landscape. High genetic differentiation was observed in the Southern re-gions of Brazil, separating wool and hair sheep. Low genetic distances were observed between flocks and breeds from north and center-west regions, and may be the result of unrecorded introgressions resulting from past unknown crossbreeding events. Observed Spatial Autocorrelation Analyses results indicate a minimum distance of 400 km should be used between collection sites to maximize genetic variabili... Mostrar Tudo |
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Palavras-Chave: |
Delaunay triangulation; Genetic landscape shape; Mantel. |
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Thesaurus Nal: |
Brazil; Genetic polymorphism; Germplasm conservation; Sampling; Sheep; Sheep breeds; Single nucleotide polymorphism. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02793naa a2200433 a 4500
001 2134431
005 2021-09-15
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.smallrumres.2020.106239$2DOI
100 1 $aMcMANUS, C.
245 $aLandscape genetics of sheep in Brazil using SNP markers.$h[electronic resource]
260 $c2020
520 $aAbstract: The aim of this study was to explore spatial patterns of genetic structure in sheep breeds sampled in Brazil using Single Nucleotide Polymorphisms (SNPs) in order to evaluate whether or not the genetic and geographic dis-tances are interrelated in this species. Samples genotyped using the 50KSheepSNPChip (Illumina) included 215 animals from eight different sheep breeds. All collection sites were georeferenced and data analyzed to determine geographic patterns from genetic data. To evaluate the correlation between genetic and geographic distances Mantel tests, Allelic Aggregation Index Analyses (AAIA), and spatial autocorrelation were performed. Genetic Landscape Shape procedure and Monmonier?s Algorithm were used to generate graphical visualization of the genetic distances across the landscape. The observed correlation observed between genetic and geographical distances was 0.552 (P <0.00099). Observed AAIA results (Rave =0.16, P <0.001) indicated a non-random distribution of genotypes across the landscape. High genetic differentiation was observed in the Southern re-gions of Brazil, separating wool and hair sheep. Low genetic distances were observed between flocks and breeds from north and center-west regions, and may be the result of unrecorded introgressions resulting from past unknown crossbreeding events. Observed Spatial Autocorrelation Analyses results indicate a minimum distance of 400 km should be used between collection sites to maximize genetic variability in future germplasm samplings for conservation of genetic resources.
650 $aBrazil
650 $aGenetic polymorphism
650 $aGermplasm conservation
650 $aSampling
650 $aSheep
650 $aSheep breeds
650 $aSingle nucleotide polymorphism
653 $aDelaunay triangulation
653 $aGenetic landscape shape
653 $aMantel
700 1 $aPAIVA, S. R.
700 1 $aCAETANO, A. R.
700 1 $aHERMUCHE, P.
700 1 $aGUIMARÃES, R. F.
700 1 $aCARVALHO JUNIOR, O. A.
700 1 $aBRAGA, R. M.
700 1 $aCARNEIRO, P. L. S.
700 1 $aMORAES, J. C. F.
700 1 $aSOUZA, C. J. H. de
700 1 $aFACO, O.
700 1 $aSANTOS, S. A.
700 1 $aAZEVEDO, H. C.
700 1 $aARAUJO, A. M. de
700 1 $aFAÇANHA, D. A. E.
700 1 $aIANELLA, P.
773 $tSmall Ruminant Research$gv. 192, e106239, 2020.
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Registro original: |
Embrapa Roraima (CPAF-RR) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
06/02/2013 |
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Data da última atualização: |
06/02/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
MONTAGNER, D. B.; NASCIMENTO JÚNIOR, D. do; VILELA, H. H.; SOUSA, B. M. de L.; EUCLIDES, V. P. B.; SILVA, S. C. da; CARLOTO, M. N. |
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Afiliação: |
DENISE BAPTAGLIN MONTAGNER, CNPGC; Domicio do Nascimento Júnior, UFV; Hélio Henrique Vilela, UFV; Braulio Maia de Lana Sousa, UFV; VALERIA PACHECO BATISTA EUCLIDES, CNPGC; Sila Carneiro da Silva, USP/ESALQ; Marciele Neves Carloto, UFMS. |
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Título: |
Tillering dynamics in pastures of guinea grass subjected to grazing severities under intermittent stocking. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, Viçosa, MG, v. 41, n. 3, p. p.544-549, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
This experiment was carried out to analyze the tillering dynamics of the species Panicum maximum cv.
Mombaca subjected to three post-grazing heights: residue of 30 cm (30); residue of 50 cm (50); and residue of 50 cm during
spring and summer, lowered to 40 cm in the first fall season grazing and to 30 cm in the following grazing cycle, resuming
to 50 cm after the first grazing of the following spring season (50-30). Grazings were initiated whenever the swards intercepted
95% of the incident light. The post-grazing heights were allocated in the experimental units in a completely randomized block
design with three replications. The density of basal tillers did not vary between the residual heights evaluated. Swards managed
with variable residual height (50-30) presented higher rates of appearance and mortality of basal tillers during the summer
of 2007, indicating high tiller renovation. Regardless of the post-grazing height evaluated, lower rates of appearance of basal
tillers were found in the spring of 2006. The stability index of guinea grass cv. Mombaca was close to 1.0 throughout the
experimental period. Swards managed with variable post-grazing present structural changes able to improve the regrowth vigor,
which may be important to maximize the use of the forage species in the production system. |
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Thesagro: |
Panicum Maximum; Pastagem; Pastejo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02042naa a2200229 a 4500
001 1948561
005 2013-02-06
008 2012 bl --- 0-- u #d
100 1 $aMONTAGNER, D. B.
245 $aTillering dynamics in pastures of guinea grass subjected to grazing severities under intermittent stocking.$h[electronic resource]
260 $c2012
520 $aThis experiment was carried out to analyze the tillering dynamics of the species Panicum maximum cv. Mombaca subjected to three post-grazing heights: residue of 30 cm (30); residue of 50 cm (50); and residue of 50 cm during spring and summer, lowered to 40 cm in the first fall season grazing and to 30 cm in the following grazing cycle, resuming to 50 cm after the first grazing of the following spring season (50-30). Grazings were initiated whenever the swards intercepted 95% of the incident light. The post-grazing heights were allocated in the experimental units in a completely randomized block design with three replications. The density of basal tillers did not vary between the residual heights evaluated. Swards managed with variable residual height (50-30) presented higher rates of appearance and mortality of basal tillers during the summer of 2007, indicating high tiller renovation. Regardless of the post-grazing height evaluated, lower rates of appearance of basal tillers were found in the spring of 2006. The stability index of guinea grass cv. Mombaca was close to 1.0 throughout the experimental period. Swards managed with variable post-grazing present structural changes able to improve the regrowth vigor, which may be important to maximize the use of the forage species in the production system.
650 $aPanicum Maximum
650 $aPastagem
650 $aPastejo
700 1 $aNASCIMENTO JÚNIOR, D. do
700 1 $aVILELA, H. H.
700 1 $aSOUSA, B. M. de L.
700 1 $aEUCLIDES, V. P. B.
700 1 $aSILVA, S. C. da
700 1 $aCARLOTO, M. N.
773 $tRevista Brasileira de Zootecnia, Viçosa, MG$gv. 41, n. 3, p. p.544-549, 2012.
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Embrapa Gado de Corte (CNPGC) |
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