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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
30/05/2022 |
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Data da última atualização: |
30/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MÁLAGA, F. da C.; SIQUEIRA, H. A.; RAUBER, L. P.; MARQUES, M. G.; PERIPOLLI, V.; SCHWEGLER, E.; OLIVEIRA JÚNIOR, J. M.; MOREIRA, F.; LOPES, M. S.; BIANCHI, I. |
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Afiliação: |
FÁBIO DA COSTA MÁLAGA, IFC/Araquari; HELLOA ALAIDE SIQUEIRA, IFC/Araquari; LUCIO PEREIRA RAUBER, IFC/Araquari; MARIANA GROKE MARQUES, CNPSA; VANESSA PERIPOLLI, IFC/Araquari; ELIZABETH SCHWEGLER, IFC/Araquari; JUAHIL MARTINS DE OLIVEIRA JÚNIOR, IFC/Araquari; FABIANA MOREIRA, IFC/Araquari; MARCOS SOARES LOPES, Animal Science Researcher, Topigs Norsvin; IVAN BIANCHI, IFC/Araquari. |
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Título: |
In vitro and in vivo parameters for identification of landrace pigs with low reproductive performance. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Semina: Ciências Agrárias, Londrina, v. 43, n. 2, p. 573-584, mar./abr. 2022. |
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DOI: |
http://dx.doi.org/10.5433/1679-0359.2022v43n2p573 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: In pig farming, measurements of production parameters play a fundamental role in the success of the activity. Minimal differences in fertility between breeders can lead to less reproductive efficiency and, less productivity. However, assessing the fertility of each male and the early identification of subfertile males is a difficult task to be performed. Thus, the aim of this study was to evaluate the use of in vitro and in vivo parameters in the identification of subfertile males of the Landrace breed, aiming to collaborate with genetic improvement programs, routine optimization in the Genetic Diffusion Units (GDUs) and the results of performance. In experiment 1, an approach to identify males with subfertility was evaluated based on retrospective data. For this, the results (averages of birth rates, number of total births and average percentages of female and male piglets per litter) were evaluated for a total of 996 matings and 847 parturitions. The inseminations came from ejaculates of 32 males, who had at least 19 females inseminated with homospermic doses in the concentration of 2.5 x 109 total sperm from the same male. As for the birth rate (BR), an average of 85.47% ± 6.05 was observed with a group of median males, seven males that stood out and one individual (M32) with a performance of 58.06% ± 9.0. For the total number of piglets born (PB) the average was 13.41 ± 0.56, with three males with better performance and one (M32) with very poor performance (8.62 ± 0.59). In experiment 2, it was verified whether evaluations of inseminating doses (ID) of semen in vitro (motility and sperm morphology) after 96 hours of storage had correlations with fertility in vivo, which can be used to identify subfertile males. The evaluations were performed on 30 ejaculates regarding the means of BR and PB, considering only those who had at least 7 females inseminated. There were no correlations between the motility assessments and semen morphological changes and the reproductive parameters evaluated. The results obtained in vivo, referring to BR and PB, demonstrated that it was possible to identify differences between males, the individual (M32) had the worst results for the percentages of BR and PB. It is concluded that there are males of high and low fertility and that only the in vitro analyzes carried out in this study are not enough to categorize them, however, the evaluation of retrospective data was efficient for this purpose. Resumo: Na suinocultura moderna, as mensurações de parâmetros de produção têm papel fundamental para o sucesso da atividade. No entanto, a avaliação da fertilidade de cada macho e a identificação precoce de machos subférteis é uma tarefa difícil de ser realizada. O objetivo deste estudo foi avaliar a utilização de parâmetros in vivo e in vitro na identificação de machos subférteis da raça Landrace, visando colaborar com os programas de melhoramento genético, otimização da rotina nas Unidade de Difusão Genética (UDGs) e dos resultados a campo. No experimento 1, foi proposta uma abordagem de identificação dos machos subférteis tendo como base dados retrospectivos. Para isso, foram avaliados os resultados (médias das taxas de parto, número de nascidos totais e média das porcentagens de leitões fêmeas e machos por leitegada) de um total de 996 coberturas e 847 partos. As inseminações foram oriundas de ejaculados de 32 machos, que tiveram ao menos 19 fêmeas cobertas com doses homospérmicas na concentração de 2,5 x 109 de espermatozoides totais e obrigatoriamente do mesmo macho. Quanto a taxa de parto (TP) obtivemos uma média de 85,47% ± 6,05 e observou-se um grupo de machos medianos, sete machos que se destacaram positivamente e um indivíduo (M32) com um desempenho 58,06 ± 9,0. Para número de leitões nascidos totais (NT) obtivemos uma média de 13,41 ± 0,56 e notou-se três machos com melhor desempenho e um (M32) com péssimo desempenho (8,62 ± 0,59). No experimento 2, foi verificado se as avaliações das doses inseminantes (DI) de sêmen in vitro (motilidade e morfologia espermática) após 96 horas de armazenamento apresentaram correlação com a fertilidade in vivo. As avaliações foram realizadas em 30 ejaculados quanto às médias de TP e NT, considerando apenas ejaculados que tiveram ao menos 7 fêmeas inseminadas. Não foram verificadas correlações entre as avaliações de motilidade e alterações morfológicas do sêmen com os parâmetros produtivos avaliados. Os resultados obtidos in vivo, referentes a TP e NT, mostrou que foi possível identificar diferença entre os machos, onde o indivíduo (M32) apresentou os piores resultados para as porcentagens de TP e NT. Desta forma, pode-se concluir que existem machos de alta e baixa fertilidade e que somente as análises in vitro realizadas neste estudo não são suficientes para categorizá-los, no entanto, a avaliação de dados retrospectivos foi eficiente para esta finalidade. MenosAbstract: In pig farming, measurements of production parameters play a fundamental role in the success of the activity. Minimal differences in fertility between breeders can lead to less reproductive efficiency and, less productivity. However, assessing the fertility of each male and the early identification of subfertile males is a difficult task to be performed. Thus, the aim of this study was to evaluate the use of in vitro and in vivo parameters in the identification of subfertile males of the Landrace breed, aiming to collaborate with genetic improvement programs, routine optimization in the Genetic Diffusion Units (GDUs) and the results of performance. In experiment 1, an approach to identify males with subfertility was evaluated based on retrospective data. For this, the results (averages of birth rates, number of total births and average percentages of female and male piglets per litter) were evaluated for a total of 996 matings and 847 parturitions. The inseminations came from ejaculates of 32 males, who had at least 19 females inseminated with homospermic doses in the concentration of 2.5 x 109 total sperm from the same male. As for the birth rate (BR), an average of 85.47% ± 6.05 was observed with a group of median males, seven males that stood out and one individual (M32) with a performance of 58.06% ± 9.0. For the total number of piglets born (PB) the average was 13.41 ± 0.56, with three males with better performance and one (M32) with very poor performance (8.6... Mostrar Tudo |
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Palavras-Chave: |
Pigs; Subfertilidade; Subfertility. |
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Thesagro: |
Melhoramento Genético Animal; Sêmen; Suíno. |
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Thesaurus Nal: |
Genetic improvement; Swine. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1143558/1/final9841.pdf
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Marc: |
LEADER 06017naa a2200337 a 4500
001 2143558
005 2022-05-30
008 2022 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.5433/1679-0359.2022v43n2p573$2DOI
100 1 $aMÁLAGA, F. da C.
245 $aIn vitro and in vivo parameters for identification of landrace pigs with low reproductive performance.$h[electronic resource]
260 $c2022
520 $aAbstract: In pig farming, measurements of production parameters play a fundamental role in the success of the activity. Minimal differences in fertility between breeders can lead to less reproductive efficiency and, less productivity. However, assessing the fertility of each male and the early identification of subfertile males is a difficult task to be performed. Thus, the aim of this study was to evaluate the use of in vitro and in vivo parameters in the identification of subfertile males of the Landrace breed, aiming to collaborate with genetic improvement programs, routine optimization in the Genetic Diffusion Units (GDUs) and the results of performance. In experiment 1, an approach to identify males with subfertility was evaluated based on retrospective data. For this, the results (averages of birth rates, number of total births and average percentages of female and male piglets per litter) were evaluated for a total of 996 matings and 847 parturitions. The inseminations came from ejaculates of 32 males, who had at least 19 females inseminated with homospermic doses in the concentration of 2.5 x 109 total sperm from the same male. As for the birth rate (BR), an average of 85.47% ± 6.05 was observed with a group of median males, seven males that stood out and one individual (M32) with a performance of 58.06% ± 9.0. For the total number of piglets born (PB) the average was 13.41 ± 0.56, with three males with better performance and one (M32) with very poor performance (8.62 ± 0.59). In experiment 2, it was verified whether evaluations of inseminating doses (ID) of semen in vitro (motility and sperm morphology) after 96 hours of storage had correlations with fertility in vivo, which can be used to identify subfertile males. The evaluations were performed on 30 ejaculates regarding the means of BR and PB, considering only those who had at least 7 females inseminated. There were no correlations between the motility assessments and semen morphological changes and the reproductive parameters evaluated. The results obtained in vivo, referring to BR and PB, demonstrated that it was possible to identify differences between males, the individual (M32) had the worst results for the percentages of BR and PB. It is concluded that there are males of high and low fertility and that only the in vitro analyzes carried out in this study are not enough to categorize them, however, the evaluation of retrospective data was efficient for this purpose. Resumo: Na suinocultura moderna, as mensurações de parâmetros de produção têm papel fundamental para o sucesso da atividade. No entanto, a avaliação da fertilidade de cada macho e a identificação precoce de machos subférteis é uma tarefa difícil de ser realizada. O objetivo deste estudo foi avaliar a utilização de parâmetros in vivo e in vitro na identificação de machos subférteis da raça Landrace, visando colaborar com os programas de melhoramento genético, otimização da rotina nas Unidade de Difusão Genética (UDGs) e dos resultados a campo. No experimento 1, foi proposta uma abordagem de identificação dos machos subférteis tendo como base dados retrospectivos. Para isso, foram avaliados os resultados (médias das taxas de parto, número de nascidos totais e média das porcentagens de leitões fêmeas e machos por leitegada) de um total de 996 coberturas e 847 partos. As inseminações foram oriundas de ejaculados de 32 machos, que tiveram ao menos 19 fêmeas cobertas com doses homospérmicas na concentração de 2,5 x 109 de espermatozoides totais e obrigatoriamente do mesmo macho. Quanto a taxa de parto (TP) obtivemos uma média de 85,47% ± 6,05 e observou-se um grupo de machos medianos, sete machos que se destacaram positivamente e um indivíduo (M32) com um desempenho 58,06 ± 9,0. Para número de leitões nascidos totais (NT) obtivemos uma média de 13,41 ± 0,56 e notou-se três machos com melhor desempenho e um (M32) com péssimo desempenho (8,62 ± 0,59). No experimento 2, foi verificado se as avaliações das doses inseminantes (DI) de sêmen in vitro (motilidade e morfologia espermática) após 96 horas de armazenamento apresentaram correlação com a fertilidade in vivo. As avaliações foram realizadas em 30 ejaculados quanto às médias de TP e NT, considerando apenas ejaculados que tiveram ao menos 7 fêmeas inseminadas. Não foram verificadas correlações entre as avaliações de motilidade e alterações morfológicas do sêmen com os parâmetros produtivos avaliados. Os resultados obtidos in vivo, referentes a TP e NT, mostrou que foi possível identificar diferença entre os machos, onde o indivíduo (M32) apresentou os piores resultados para as porcentagens de TP e NT. Desta forma, pode-se concluir que existem machos de alta e baixa fertilidade e que somente as análises in vitro realizadas neste estudo não são suficientes para categorizá-los, no entanto, a avaliação de dados retrospectivos foi eficiente para esta finalidade.
650 $aGenetic improvement
650 $aSwine
650 $aMelhoramento Genético Animal
650 $aSêmen
650 $aSuíno
653 $aPigs
653 $aSubfertilidade
653 $aSubfertility
700 1 $aSIQUEIRA, H. A.
700 1 $aRAUBER, L. P.
700 1 $aMARQUES, M. G.
700 1 $aPERIPOLLI, V.
700 1 $aSCHWEGLER, E.
700 1 $aOLIVEIRA JÚNIOR, J. M.
700 1 $aMOREIRA, F.
700 1 $aLOPES, M. S.
700 1 $aBIANCHI, I.
773 $tSemina: Ciências Agrárias, Londrina$gv. 43, n. 2, p. 573-584, mar./abr. 2022.
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Pantanal. |
|
Data corrente: |
04/07/2017 |
|
Data da última atualização: |
13/07/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
ROBERTO, I. J.; BITTENCOURT, P. S.; MUNIZ, F. L.; HERNÁNDEZ- RANGEL, S.; NÓBREGA, Y. C.; ÁVILA, R. W.; SOUZA, B. C.; ALVAREZ, G.; MIRANDA-CHUMACERO, G.; CAMPOS, Z.; FARIAS, I. P.; HRBEK, T. |
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Afiliação: |
IGOR J. ROBERTO, Federal University of Amazonas - UFAM; PEDRO S. BITTENCOURT, Federal University of Amazonas - UFAM; FABIO L. MUNIZ, Federal University of Amazonas - UFAM; SANDRA M. HERNÁNDEZ- RANGEL, Federal University of Amazonas - UFAM; YHURI C. NÓBREGA, Marcos Daniel Institute, Vitoria, ES; ROBSON W. ÁVILA, Federal University of Ceara - UFC; BRUNO C. SOUZA, Institute for Biodiversity Conservation - ICMBio; GUSTAVO ALVAREZ, Wildlife Conservation Society - WCS, Bolivia; GUIDO MIRANDA-CHUMACERO, Wildlife Conservation Society - WCS, Bolivia; ZILCA MARIA DA SILVA CAMPOS, CPAP; IZENI P. FARIAS, Federal University of Amazonas - UFAM; TOMAS HRBEK, Federal University of Amazonas - UFAM. |
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Título: |
Unexpected but unsurprising lineage diversity within the most widespread Neotropical crocodilian genus Caiman (Crocodylia, Alligatoridae). |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Systematics and Biodiversity, v.18, n. 4, p. 377-395, 2020. |
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DOI: |
https://doi.org/10.1080/14772000.2020.1769222 |
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Idioma: |
Inglês |
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Conteúdo: |
Species discovery methods utilizing coalescent-based approaches are powerful tools for detecting cryptic lineages within morphological conservative groups, thus being an important methodology of integrative taxonomic research. Crocodilians are a classic example of morphologically conserved group where coalescence-based species delimitation analyses resulted in the discovery of cryptic lineages and potentially new species. In this study, we used several single locus species discovery methods to analyze the phylogenetic diversity of the most widespread alligatorid genus of the Neotropics, the genus Caiman. We analyzed 479 specimens representing all named taxa, with the exception of Caiman crocodilus apaporiensis, and known geographic distribution of these taxa. We observed high lineage diversity within the Caiman crocodilus/yacare complex, ranging from 7 to 10 lineages, and three lineages within Caiman latirostris. We also provide a new dated phylogeny for all the delimited lineages. Oligocene and Miocene events triggered the diversification of the major lineages, with latter Pleistocene events influencing the final diversification of the genus. We demonstrate that the discovered lineages within the Caiman complex are compatible with being species and as such are candidates for an integrated taxonomic analysis. However, it is important to highlight that independent of the future recognition of these lineages as species, it is extremely important to protect these cryptic lineages as unique evolutionary entities, many of which are highly threatened by habitat loss from dam construction projects, tailing dam collapses, mining, agriculture and agricultural run-off across all of South America. MenosSpecies discovery methods utilizing coalescent-based approaches are powerful tools for detecting cryptic lineages within morphological conservative groups, thus being an important methodology of integrative taxonomic research. Crocodilians are a classic example of morphologically conserved group where coalescence-based species delimitation analyses resulted in the discovery of cryptic lineages and potentially new species. In this study, we used several single locus species discovery methods to analyze the phylogenetic diversity of the most widespread alligatorid genus of the Neotropics, the genus Caiman. We analyzed 479 specimens representing all named taxa, with the exception of Caiman crocodilus apaporiensis, and known geographic distribution of these taxa. We observed high lineage diversity within the Caiman crocodilus/yacare complex, ranging from 7 to 10 lineages, and three lineages within Caiman latirostris. We also provide a new dated phylogeny for all the delimited lineages. Oligocene and Miocene events triggered the diversification of the major lineages, with latter Pleistocene events influencing the final diversification of the genus. We demonstrate that the discovered lineages within the Caiman complex are compatible with being species and as such are candidates for an integrated taxonomic analysis. However, it is important to highlight that independent of the future recognition of these lineages as species, it is extremely important to protect these cryptic lineag... Mostrar Tudo |
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Thesagro: |
Espécie; Jacaré; Taxonomia Animal. |
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Thesaurus NAL: |
Caiman crocodilus; Caiman yacare; Taxonomic Classification of Organisms. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02770naa a2200337 a 4500
001 2071932
005 2020-07-13
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/14772000.2020.1769222$2DOI
100 1 $aROBERTO, I. J.
245 $aUnexpected but unsurprising lineage diversity within the most widespread Neotropical crocodilian genus Caiman (Crocodylia, Alligatoridae).$h[electronic resource]
260 $c2020
520 $aSpecies discovery methods utilizing coalescent-based approaches are powerful tools for detecting cryptic lineages within morphological conservative groups, thus being an important methodology of integrative taxonomic research. Crocodilians are a classic example of morphologically conserved group where coalescence-based species delimitation analyses resulted in the discovery of cryptic lineages and potentially new species. In this study, we used several single locus species discovery methods to analyze the phylogenetic diversity of the most widespread alligatorid genus of the Neotropics, the genus Caiman. We analyzed 479 specimens representing all named taxa, with the exception of Caiman crocodilus apaporiensis, and known geographic distribution of these taxa. We observed high lineage diversity within the Caiman crocodilus/yacare complex, ranging from 7 to 10 lineages, and three lineages within Caiman latirostris. We also provide a new dated phylogeny for all the delimited lineages. Oligocene and Miocene events triggered the diversification of the major lineages, with latter Pleistocene events influencing the final diversification of the genus. We demonstrate that the discovered lineages within the Caiman complex are compatible with being species and as such are candidates for an integrated taxonomic analysis. However, it is important to highlight that independent of the future recognition of these lineages as species, it is extremely important to protect these cryptic lineages as unique evolutionary entities, many of which are highly threatened by habitat loss from dam construction projects, tailing dam collapses, mining, agriculture and agricultural run-off across all of South America.
650 $aCaiman crocodilus
650 $aCaiman yacare
650 $aTaxonomic Classification of Organisms
650 $aEspécie
650 $aJacaré
650 $aTaxonomia Animal
700 1 $aBITTENCOURT, P. S.
700 1 $aMUNIZ, F. L.
700 1 $aHERNÁNDEZ- RANGEL, S.
700 1 $aNÓBREGA, Y. C.
700 1 $aÁVILA, R. W.
700 1 $aSOUZA, B. C.
700 1 $aALVAREZ, G.
700 1 $aMIRANDA-CHUMACERO, G.
700 1 $aCAMPOS, Z.
700 1 $aFARIAS, I. P.
700 1 $aHRBEK, T.
773 $tSystematics and Biodiversity$gv.18, n. 4, p. 377-395, 2020.
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