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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul; Embrapa Unidades Centrais. |
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Data corrente: |
14/01/2008 |
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Data da última atualização: |
14/08/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MORAES, J. C. F.; JAUME, C. M.; SOUZA, C. J. H. de. |
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Afiliação: |
JOSE CARLOS FERRUGEM MORAES, CPPSUL; Carlos Miguel Jaume, Aposentado CPPSUL; CARLOS JOSE HOFF DE SOUZA, CPPSUL. |
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Título: |
Body condition score to predict the postpartum fertility of crossbred beef cows. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 42, n. 5, p. 741-746, maio 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
The relationship between changes in body condition score (BCS) during the postpartum and fertility in beef cows suckling calves under extensive conditions were investigated. Cows were subjected to four BCS evaluations over the postpartum period, starting around one month after calving. In the second evaluation cows were treated with medroxy-progesterone acetate impregnated pessaries and received an injection of estradiol benzoate. At the third evaluation, pessaries were removed and calves were separated from the cows for 96 hours, during which time estrous was observed twice a day, and animals artificially inseminated 12 hours after detection. When calves returned to their dams, bulls were introduced until a 60-day mating period was reached. The distribution of BCS differed among calving groups and evaluations. Results indicated that only cows comprising a BCS 3 (1 to 5 scale) around the first month postpartum can be used in an artificial insemination program with possibilities of becoming pregnant. There was no statistical difference between the calving groups in pregnancy rate. The evolution of the BCS of the cows during postpartum can be used to adjust the start of the breeding season to coincide with the time of the year where herd pregnancy rates will be highest. |
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Palavras-Chave: |
estação reprodutiva; pregnancy rates; taxa de prenhez. |
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Thesagro: |
Bos Taurus; Bovino; Inseminação Artificial; Prenhez. |
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Thesaurus Nal: |
artificial insemination; breeding season. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/63678/1/18.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/41066/1/42n05a18.pdf
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Marc: |
LEADER 02029naa a2200253 a 4500
001 1228279
005 2012-08-14
008 2007 bl uuuu u00u1 u #d
100 1 $aMORAES, J. C. F.
245 $aBody condition score to predict the postpartum fertility of crossbred beef cows.
260 $c2007
520 $aThe relationship between changes in body condition score (BCS) during the postpartum and fertility in beef cows suckling calves under extensive conditions were investigated. Cows were subjected to four BCS evaluations over the postpartum period, starting around one month after calving. In the second evaluation cows were treated with medroxy-progesterone acetate impregnated pessaries and received an injection of estradiol benzoate. At the third evaluation, pessaries were removed and calves were separated from the cows for 96 hours, during which time estrous was observed twice a day, and animals artificially inseminated 12 hours after detection. When calves returned to their dams, bulls were introduced until a 60-day mating period was reached. The distribution of BCS differed among calving groups and evaluations. Results indicated that only cows comprising a BCS 3 (1 to 5 scale) around the first month postpartum can be used in an artificial insemination program with possibilities of becoming pregnant. There was no statistical difference between the calving groups in pregnancy rate. The evolution of the BCS of the cows during postpartum can be used to adjust the start of the breeding season to coincide with the time of the year where herd pregnancy rates will be highest.
650 $aartificial insemination
650 $abreeding season
650 $aBos Taurus
650 $aBovino
650 $aInseminação Artificial
650 $aPrenhez
653 $aestação reprodutiva
653 $apregnancy rates
653 $ataxa de prenhez
700 1 $aJAUME, C. M.
700 1 $aSOUZA, C. J. H. de
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 42, n. 5, p. 741-746, maio 2007.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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