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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
01/02/2017 |
Data da última atualização: |
22/08/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CRUZ, D. A. C. da; SAVEGNAGO, R. P.; SANTANA, A. B. B.; PEIXOTO, M. G. C. D.; BRUNELI, F. A. T.; FARO, L. El. |
Afiliação: |
Diego Augusto Campos da Cruz, Instituto de Zotecnia; Rodrigo Pelicioni Savegnago, UNESP; Annaíza Braga Bignardi Santana, UFMT; MARIA GABRIELA CAMPOLINA D PEIXOTO, CNPGL; FRANK ANGELO TOMITA BRUNELI, CNPGL; Lenira El Faro, Instituto de Zootecnia. |
Título: |
Cluster analysis of breeding values for milk yield and lactation persistency in Guzerá cattle. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Ciencia Rural, v. 46, n. 7, p. 1281-1288, 2016. |
DOI: |
https://doi.org/10.1590/0103-8478cr20150418 |
Idioma: |
Inglês |
Conteúdo: |
ABSTRACT - The aim of this study was to explore the pattern of genetic lactation curves of Guzerá cattle using cluster analysis. Test-day milk yields of 5,274 first-lactation Guzerá cows were recorded in a progeny test. A total of 34,193 monthly records were analyzed with a random regression animal model using Legendre polynomials to fit additive genetic and permanent environmental random effects and mean trends. Hierarchical and non-hierarchical cluster analyses were performed based on the EBVs for monthly test-day milk yield, peak yield, lactation persistency, and partial cumulative and 305-day yields. The heritability estimates for testday milk yields ranged from 0.24 to 0.52. Cluster analysis identified animals in the population that belong to different groups according to milk production level and lactation persistency. RESUMO - Objetivou-se neste estudo explorar o padrão das curvas de lactação genéticas de bovinos da raça Guzerá, empregando análises de agrupamento. Os 34.193 registros mensais de produção de leite foram provenientes de 5.274 vacas da raça Guzerá, participantes do teste de progênie. As análises foram realizadas com um modelo de regressão aleatória com polinômios de Legendre, composto pelos efeitos aleatórios genético aditivo, de ambiente permanente e o residual, e a curva média de lactação da população. Análise de agrupamento hierárquico e não hierárquico foram realizados com base nos VG para a produção acumulada até os 305 dias, pico e persistência da lactação, e períodos parciais da lactação. As estimativas de herdabilidade para produção de leite no dia do controle variaram entre 0,24 a 0,52. A análise de agrupamento identificou os animais da população que pertencem a diferentes grupos de acordo com o nível de produção de leite e persistência da lactação. MenosABSTRACT - The aim of this study was to explore the pattern of genetic lactation curves of Guzerá cattle using cluster analysis. Test-day milk yields of 5,274 first-lactation Guzerá cows were recorded in a progeny test. A total of 34,193 monthly records were analyzed with a random regression animal model using Legendre polynomials to fit additive genetic and permanent environmental random effects and mean trends. Hierarchical and non-hierarchical cluster analyses were performed based on the EBVs for monthly test-day milk yield, peak yield, lactation persistency, and partial cumulative and 305-day yields. The heritability estimates for testday milk yields ranged from 0.24 to 0.52. Cluster analysis identified animals in the population that belong to different groups according to milk production level and lactation persistency. RESUMO - Objetivou-se neste estudo explorar o padrão das curvas de lactação genéticas de bovinos da raça Guzerá, empregando análises de agrupamento. Os 34.193 registros mensais de produção de leite foram provenientes de 5.274 vacas da raça Guzerá, participantes do teste de progênie. As análises foram realizadas com um modelo de regressão aleatória com polinômios de Legendre, composto pelos efeitos aleatórios genético aditivo, de ambiente permanente e o residual, e a curva média de lactação da população. Análise de agrupamento hierárquico e não hierárquico foram realizados com base nos VG para a produção acumulada até os 305 dias, pico e persistência da l... Mostrar Tudo |
Palavras-Chave: |
Breeding values; Random regression. |
Thesaurus Nal: |
lactation curve. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/154537/1/Cnpgl-2016-CiRural-Cluster.pdf
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Marc: |
LEADER 02579naa a2200229 a 4500 001 2062480 005 2022-08-22 008 2016 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1590/0103-8478cr20150418$2DOI 100 1 $aCRUZ, D. A. C. da 245 $aCluster analysis of breeding values for milk yield and lactation persistency in Guzerá cattle.$h[electronic resource] 260 $c2016 520 $aABSTRACT - The aim of this study was to explore the pattern of genetic lactation curves of Guzerá cattle using cluster analysis. Test-day milk yields of 5,274 first-lactation Guzerá cows were recorded in a progeny test. A total of 34,193 monthly records were analyzed with a random regression animal model using Legendre polynomials to fit additive genetic and permanent environmental random effects and mean trends. Hierarchical and non-hierarchical cluster analyses were performed based on the EBVs for monthly test-day milk yield, peak yield, lactation persistency, and partial cumulative and 305-day yields. The heritability estimates for testday milk yields ranged from 0.24 to 0.52. Cluster analysis identified animals in the population that belong to different groups according to milk production level and lactation persistency. RESUMO - Objetivou-se neste estudo explorar o padrão das curvas de lactação genéticas de bovinos da raça Guzerá, empregando análises de agrupamento. Os 34.193 registros mensais de produção de leite foram provenientes de 5.274 vacas da raça Guzerá, participantes do teste de progênie. As análises foram realizadas com um modelo de regressão aleatória com polinômios de Legendre, composto pelos efeitos aleatórios genético aditivo, de ambiente permanente e o residual, e a curva média de lactação da população. Análise de agrupamento hierárquico e não hierárquico foram realizados com base nos VG para a produção acumulada até os 305 dias, pico e persistência da lactação, e períodos parciais da lactação. As estimativas de herdabilidade para produção de leite no dia do controle variaram entre 0,24 a 0,52. A análise de agrupamento identificou os animais da população que pertencem a diferentes grupos de acordo com o nível de produção de leite e persistência da lactação. 650 $alactation curve 653 $aBreeding values 653 $aRandom regression 700 1 $aSAVEGNAGO, R. P. 700 1 $aSANTANA, A. B. B. 700 1 $aPEIXOTO, M. G. C. D. 700 1 $aBRUNELI, F. A. T. 700 1 $aFARO, L. El 773 $tCiencia Rural$gv. 46, n. 7, p. 1281-1288, 2016.
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Embrapa Gado de Leite (CNPGL) |
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Registro Completo
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
19/08/2020 |
Data da última atualização: |
19/08/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
MONTEIRO NETTO, M.; BALARO, M. F. A.; COSENTINO, I. O.; ESPÍRITO SANTO, C. G. do; OLIVEIRA, R. V. de; SOUZA-FABJAN, J. M. G.; BRANDÃO, F. Z.; FONSECA, J. F. da. |
Afiliação: |
MARINA MONTEIRO NETTO, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil; MARIO FELIPE ALVAREZ BALARO, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil; ISABEL OLIVEIRA COSENTINO, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil; Orcid: https://orcid. org/0000-0002-1059-1831; CAROLINE GOMES DO ESPÍRITO SANTO, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil; RODRIGO VASCONCELOS DE OLIVEIRA, Universidade Federal Rural do Rio de Janeiro (UFRRJ) - Seropédica, RJ, Brazil; JOANNA MARIA GONÇALVES SOUZA-FABJAN, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil; Orcid: https://orcid. org/0000-0002-4872-1718 Jeferson Ferreira Fonseca https://; FELIPE ZANDONADI BRANDÃO, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil; JEFERSON FERREIRA DA FONSECA, CNPC. |
Título: |
Use of two cloprostenol administrations 11.5 days apart efficiently synchronizes oestrus in photostimulated multiparous dairy goats in the non-breeding season. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Reproduction in Domestic Animals, v. 55, n. 8, p. 965-973, Aug. 2020. |
DOI: |
https://doi.org/10.1111/rda.13736 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: This study assessed the efficiency of synchronous oestrous induction by light programme followed by two doses of cloprostenol in acyclic Saanen goats of different parity orders. Primiparous (n = 22) and multiparous (n = 33) goats were subjected to 16 hr of light and 8 hr of darkness for 60 days (D0?D60), starting 10 days after the winter solstice. All goats received 120 µg cloprostenol doses on D130 (morning) and D141.5 (afternoon) (11.5 days apart). Oestrus behaviour, ovarian follicular dynamics and serum progesterone (P4) analyses were recorded from D0 to D174 at different intervals. Animals in oestrus after D141.5 were randomly assigned into two groups: assisted natural mating (NM) or artificial insemination (AI; 10?24 hr after oestrus onset with frozen?thawed semen). From D57 to D120, 89.0% of goats presented large follicles (5?8 mm) and P4 concentrations were subluteal from D0 to D120. More multiparous compared to primiparous goats (54.5%, 18/33 vs. 18.2%, 4/22) exhibited oestrus after both injections. More primiparous compared to multiparous goats (54.5%, 12/22 vs. 12.1%, 4/33) did not exhibit oestrus after any injection. A total of 35 goats (64%) were in oestrus after the second prostaglandin injection and were subjected to NM or AI. The conception rate was similar among primiparous (70.0%, 7/10) and multiparous (68.0%, 17/25) goats but the pregnancy rate differed, being 31.8% (7/22) and 51.5% (17/33), respectively. No interaction was found between parity order and P4 concentrations in does that became pregnant or not. Thus, the association between light programme (60 days, starting at the beginning of winter) and two cloprostenol administrations 11.5 days apart (starting 70 days after the end of the light treatment) resulted in sufficient synchronous oestrous response in multiparous acyclic Saanen goats to reach satisfactory fertility levels after both NM and AI. MenosAbstract: This study assessed the efficiency of synchronous oestrous induction by light programme followed by two doses of cloprostenol in acyclic Saanen goats of different parity orders. Primiparous (n = 22) and multiparous (n = 33) goats were subjected to 16 hr of light and 8 hr of darkness for 60 days (D0?D60), starting 10 days after the winter solstice. All goats received 120 µg cloprostenol doses on D130 (morning) and D141.5 (afternoon) (11.5 days apart). Oestrus behaviour, ovarian follicular dynamics and serum progesterone (P4) analyses were recorded from D0 to D174 at different intervals. Animals in oestrus after D141.5 were randomly assigned into two groups: assisted natural mating (NM) or artificial insemination (AI; 10?24 hr after oestrus onset with frozen?thawed semen). From D57 to D120, 89.0% of goats presented large follicles (5?8 mm) and P4 concentrations were subluteal from D0 to D120. More multiparous compared to primiparous goats (54.5%, 18/33 vs. 18.2%, 4/22) exhibited oestrus after both injections. More primiparous compared to multiparous goats (54.5%, 12/22 vs. 12.1%, 4/33) did not exhibit oestrus after any injection. A total of 35 goats (64%) were in oestrus after the second prostaglandin injection and were subjected to NM or AI. The conception rate was similar among primiparous (70.0%, 7/10) and multiparous (68.0%, 17/25) goats but the pregnancy rate differed, being 31.8% (7/22) and 51.5% (17/33), respectively. No interaction was found between parity or... Mostrar Tudo |
Palavras-Chave: |
Indução ao estro. |
Thesagro: |
Cabra Leiteira; Caprino; Ciclo Estral; Corpo Lúteo; Eficiência Reprodutiva; Inseminação Artificial; Prostaglandina; Reprodução Animal; Ultrassom. |
Thesaurus NAL: |
Anestrus; Animal reproduction; Artificial insemination; Corpus luteum; Reproductive efficiency; Synthetic hormones; Synthetic prostaglandins; Ultrasonography. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 03298naa a2200433 a 4500 001 2124419 005 2020-08-19 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1111/rda.13736$2DOI 100 1 $aMONTEIRO NETTO, M. 245 $aUse of two cloprostenol administrations 11.5 days apart efficiently synchronizes oestrus in photostimulated multiparous dairy goats in the non-breeding season.$h[electronic resource] 260 $c2020 520 $aAbstract: This study assessed the efficiency of synchronous oestrous induction by light programme followed by two doses of cloprostenol in acyclic Saanen goats of different parity orders. Primiparous (n = 22) and multiparous (n = 33) goats were subjected to 16 hr of light and 8 hr of darkness for 60 days (D0?D60), starting 10 days after the winter solstice. All goats received 120 µg cloprostenol doses on D130 (morning) and D141.5 (afternoon) (11.5 days apart). Oestrus behaviour, ovarian follicular dynamics and serum progesterone (P4) analyses were recorded from D0 to D174 at different intervals. Animals in oestrus after D141.5 were randomly assigned into two groups: assisted natural mating (NM) or artificial insemination (AI; 10?24 hr after oestrus onset with frozen?thawed semen). From D57 to D120, 89.0% of goats presented large follicles (5?8 mm) and P4 concentrations were subluteal from D0 to D120. More multiparous compared to primiparous goats (54.5%, 18/33 vs. 18.2%, 4/22) exhibited oestrus after both injections. More primiparous compared to multiparous goats (54.5%, 12/22 vs. 12.1%, 4/33) did not exhibit oestrus after any injection. A total of 35 goats (64%) were in oestrus after the second prostaglandin injection and were subjected to NM or AI. The conception rate was similar among primiparous (70.0%, 7/10) and multiparous (68.0%, 17/25) goats but the pregnancy rate differed, being 31.8% (7/22) and 51.5% (17/33), respectively. No interaction was found between parity order and P4 concentrations in does that became pregnant or not. Thus, the association between light programme (60 days, starting at the beginning of winter) and two cloprostenol administrations 11.5 days apart (starting 70 days after the end of the light treatment) resulted in sufficient synchronous oestrous response in multiparous acyclic Saanen goats to reach satisfactory fertility levels after both NM and AI. 650 $aAnestrus 650 $aAnimal reproduction 650 $aArtificial insemination 650 $aCorpus luteum 650 $aReproductive efficiency 650 $aSynthetic hormones 650 $aSynthetic prostaglandins 650 $aUltrasonography 650 $aCabra Leiteira 650 $aCaprino 650 $aCiclo Estral 650 $aCorpo Lúteo 650 $aEficiência Reprodutiva 650 $aInseminação Artificial 650 $aProstaglandina 650 $aReprodução Animal 650 $aUltrassom 653 $aIndução ao estro 700 1 $aBALARO, M. F. A. 700 1 $aCOSENTINO, I. O. 700 1 $aESPÍRITO SANTO, C. G. do 700 1 $aOLIVEIRA, R. V. de 700 1 $aSOUZA-FABJAN, J. M. G. 700 1 $aBRANDÃO, F. Z. 700 1 $aFONSECA, J. F. da 773 $tReproduction in Domestic Animals$gv. 55, n. 8, p. 965-973, Aug. 2020.
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