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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
17/10/2023 |
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Data da última atualização: |
17/10/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TORAL, F. L. B.; MENEZES, G. R. de O.; SILVA, L. O. C. da; NIETO, L. M.; SOUZA JR., M. D. de; TORRES JUNIOR, R. A. de A. |
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Afiliação: |
FABIO LUIZ BURANELO TORAL, UNIVERSIDADE FEDERAL DE MINAS GERAIS; GILBERTO ROMEIRO DE OLIVEIRA MENEZE, CNPGC; LUIZ OTAVIO CAMPOS DA SILVA, CNPGC; LEONARDO MARTIN NIETO, GENEPLUS CONSULTORIA AGROPECUÁRIA LTDA; MAURY DORTA DE SOUZA JR., GENEPLUS CONSULTORIA AGROPECUÁRIA LTDA; ROBERTO AUGUSTO DE A TORRES JUNIOR, CNPGC. |
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Título: |
Benchmarking in a beef cattle breeding program: lessons from the best breeders. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Animal Breeding and Genetics, v. 140, n. 3, 2023. |
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Páginas: |
8 p. |
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Idioma: |
Inglês |
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Conteúdo: |
Beef cattle breeding programs offer genetic evaluations and consulting services on animal breeding practices to help breeders improve the genetic merit of their herds. Some breeders are more willing to apply best practices and technologies than others. Consequently, the average genetic merit and genetic trends differ across herds. We benchmarked some parameters of an average herd (AVE) and the corresponding parameters of herds with higher genetic merit (TOP), both participating in a commercial Nellore breeding program. Expected progeny differences (EPD) for growth, reproductive and carcass traits and a selection index (SI) of animals born from 2005 to 2019 on 128 farms located in Brazil, Bolivia and Paraguay were used to compute the AVE parameters. The 20 herds with higher mean SI of animals born in the last five birth seasons were classified as TOP herds. The mean SI and EPD of animals born in the last five seasons in the TOP herds were, respectively, 89% and 79% to 206% higher (p ≤ 0.001) than those of animals from the AVE herd. Genetic trends over the entire period were also higher (50% for SI and 31% to 88% separately for each trait, p ≤ 0.006) in the TOP herds compared to the AVE herd. Although the difference in the numbers of cows, bulls and calves between the TOP and AVE herds did not reach statistical significance (p = 0.175, p = 0.273 and p = 0.061, respectively), the numbers of progeny per cow and per bull were 21% (p = 0.012) and 26% (p = 0.047) higher in the TOP herds, respectively. Multiple ovulation and embryo transfer and in vitro fertilization and embryo transfer (MOET/IVF) accounted for a higher percentage of births in the TOP herds compared to AVE (24.6% vs. 12.5%, p = 0.002). The generation interval was 17% shorter (p < 0.001) in the TOP herds compared to AVE. The average inbreeding coefficient of animals from the TOP herds (1.08 ± 0.52%) did not differ (p = 0.78) from that of AVE animals (1.26 ± 0.96%). In general, AVE herds are evolving in the desirable direction but differences in genetic merit between AVE and TOP herds are increasing over time. The more frequent use of MOET/IVF, a lower cow-to-bull ratio, and a larger family size (progeny per cow or per bull) can help achieve larger selection differentials and increase genetic trends and average genetic merits of TOP herds compared to AVE herds. MenosBeef cattle breeding programs offer genetic evaluations and consulting services on animal breeding practices to help breeders improve the genetic merit of their herds. Some breeders are more willing to apply best practices and technologies than others. Consequently, the average genetic merit and genetic trends differ across herds. We benchmarked some parameters of an average herd (AVE) and the corresponding parameters of herds with higher genetic merit (TOP), both participating in a commercial Nellore breeding program. Expected progeny differences (EPD) for growth, reproductive and carcass traits and a selection index (SI) of animals born from 2005 to 2019 on 128 farms located in Brazil, Bolivia and Paraguay were used to compute the AVE parameters. The 20 herds with higher mean SI of animals born in the last five birth seasons were classified as TOP herds. The mean SI and EPD of animals born in the last five seasons in the TOP herds were, respectively, 89% and 79% to 206% higher (p ≤ 0.001) than those of animals from the AVE herd. Genetic trends over the entire period were also higher (50% for SI and 31% to 88% separately for each trait, p ≤ 0.006) in the TOP herds compared to the AVE herd. Although the difference in the numbers of cows, bulls and calves between the TOP and AVE herds did not reach statistical significance (p = 0.175, p = 0.273 and p = 0.061, respectively), the numbers of progeny per cow and per bull were 21% (p = 0.012) an... Mostrar Tudo |
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Thesaurus Nal: |
Cattle breeding; Embryo transfer; Genetic merit; Genetic trend; In vitro fertilization. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03187naa a2200253 a 4500
001 2157297
005 2023-10-17
008 2023 bl uuuu u00u1 u #d
100 1 $aTORAL, F. L. B.
245 $aBenchmarking in a beef cattle breeding program$blessons from the best breeders.$h[electronic resource]
260 $c2023
300 $a8 p.
520 $aBeef cattle breeding programs offer genetic evaluations and consulting services on animal breeding practices to help breeders improve the genetic merit of their herds. Some breeders are more willing to apply best practices and technologies than others. Consequently, the average genetic merit and genetic trends differ across herds. We benchmarked some parameters of an average herd (AVE) and the corresponding parameters of herds with higher genetic merit (TOP), both participating in a commercial Nellore breeding program. Expected progeny differences (EPD) for growth, reproductive and carcass traits and a selection index (SI) of animals born from 2005 to 2019 on 128 farms located in Brazil, Bolivia and Paraguay were used to compute the AVE parameters. The 20 herds with higher mean SI of animals born in the last five birth seasons were classified as TOP herds. The mean SI and EPD of animals born in the last five seasons in the TOP herds were, respectively, 89% and 79% to 206% higher (p ≤ 0.001) than those of animals from the AVE herd. Genetic trends over the entire period were also higher (50% for SI and 31% to 88% separately for each trait, p ≤ 0.006) in the TOP herds compared to the AVE herd. Although the difference in the numbers of cows, bulls and calves between the TOP and AVE herds did not reach statistical significance (p = 0.175, p = 0.273 and p = 0.061, respectively), the numbers of progeny per cow and per bull were 21% (p = 0.012) and 26% (p = 0.047) higher in the TOP herds, respectively. Multiple ovulation and embryo transfer and in vitro fertilization and embryo transfer (MOET/IVF) accounted for a higher percentage of births in the TOP herds compared to AVE (24.6% vs. 12.5%, p = 0.002). The generation interval was 17% shorter (p < 0.001) in the TOP herds compared to AVE. The average inbreeding coefficient of animals from the TOP herds (1.08 ± 0.52%) did not differ (p = 0.78) from that of AVE animals (1.26 ± 0.96%). In general, AVE herds are evolving in the desirable direction but differences in genetic merit between AVE and TOP herds are increasing over time. The more frequent use of MOET/IVF, a lower cow-to-bull ratio, and a larger family size (progeny per cow or per bull) can help achieve larger selection differentials and increase genetic trends and average genetic merits of TOP herds compared to AVE herds.
650 $aCattle breeding
650 $aEmbryo transfer
650 $aGenetic merit
650 $aGenetic trend
650 $aIn vitro fertilization
700 1 $aMENEZES, G. R. de O.
700 1 $aSILVA, L. O. C. da
700 1 $aNIETO, L. M.
700 1 $aSOUZA JR., M. D. de
700 1 $aTORRES JUNIOR, R. A. de A.
773 $tJournal of Animal Breeding and Genetics$gv. 140, n. 3, 2023.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
01/08/2011 |
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Data da última atualização: |
13/04/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
MARTINS, C. T. de V. D.; GUIMARÃES, N. B.; FEITOZA, M. M. de O.; SILVA, T. A. da; SANTOS, A. P. B.; KIILL, L. H. P. |
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Afiliação: |
CARLA TATIANA DE VASCONCELOS DIAS MARTINS; NERIMAR BARBOSA GUIMARÃES; MAGNA MANGABEIRA DE OLIVEIRA FEITOZA; TAMIRES ALMEIDA DA SILVA; AMANDA PROCILLA BATISTA SANTOS; LUCIA HELENA PIEDADE KIILL, CPATSA. |
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Título: |
Reproductive biology Portulaca umbraticola Kunth Portulacaceae in Petrolina, PE, Brazil. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM OF POLLINATION, 10., 2011, Cholula. Program & abstracts... Cholula: UDLAP: ICPRB, 2011. |
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Páginas: |
p. 50-51. |
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Idioma: |
Inglês |
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Conteúdo: |
Aiming to contribute with information about pollination ecology, observations of the reproductive biology of 10 individuais ofthis species were made in the period from January to March 2011, in an area of Caatinga, Petrolina-PE, Brazil. |
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Palavras-Chave: |
Bioma Caatinga; Planta daninha. |
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Thesagro: |
Abelha; Beldroega; Caatinga; Inseto; Polinização. |
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Thesaurus NAL: |
Bee pollen; Pollination. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/208918/1/REPRODUCTIVE-BIOLOGY-PORTULACA-UMBRATICOLA-KUNTH-PORTULACACEAE.pdf
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Marc: |
LEADER 01089nam a2200289 a 4500
001 1897078
005 2021-04-13
008 2011 bl uuuu u00u1 u #d
100 1 $aMARTINS, C. T. de V. D.
245 $aReproductive biology Portulaca umbraticola Kunth Portulacaceae in Petrolina, PE, Brazil.
260 $aIn: INTERNATIONAL SYMPOSIUM OF POLLINATION, 10., 2011, Cholula. Program & abstracts... Cholula: UDLAP: ICPRB$c2011
300 $ap. 50-51.
520 $aAiming to contribute with information about pollination ecology, observations of the reproductive biology of 10 individuais ofthis species were made in the period from January to March 2011, in an area of Caatinga, Petrolina-PE, Brazil.
650 $aBee pollen
650 $aPollination
650 $aAbelha
650 $aBeldroega
650 $aCaatinga
650 $aInseto
650 $aPolinização
653 $aBioma Caatinga
653 $aPlanta daninha
700 1 $aGUIMARÃES, N. B.
700 1 $aFEITOZA, M. M. de O.
700 1 $aSILVA, T. A. da
700 1 $aSANTOS, A. P. B.
700 1 $aKIILL, L. H. P.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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