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| 1. |  | FERREIRA, T. M. M.; FERREIRA FILHO, J. A.; LEAO, A. P.; SOUSA, C. A. F. de; SOUZA JUNIOR, M. T. Structural and functional analysis of stress-resonsive genes and their selected promoters from young oil palm (ELAEIS GUINEENSIS) under two abiotic stresses. In: BRAZILIAN CONGRESS OF GENETICS, 67., 2022, Natal, RN. Porto Alegre: Sociedade Brasileira de Genética, 2022. p. 320| Biblioteca(s): Embrapa Agroenergia. |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
03/01/2020 |
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Data da última atualização: |
03/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MENDONÇA, F. S.; MACNEIL, M. D.; LEAL, W. S.; AZAMBUJA, R. C. C.; RODRIGUES, P. F.; CARDOSO, F. F. |
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Afiliação: |
Fábio S. Mendonça, UFPEL; Michael D. MacNeil, University of the Free State; Willian S. Leal, UFPEL; Rodrigo C. C. Azambuja, SENAR; Pedro F. Rodrigues, SENAR; FERNANDO FLORES CARDOSO, CPPSUL. |
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Título: |
Crossbreeding effects on growth and efficiency in beef cow-calf systems: evaluation of Angus, Caracu, Hereford and Nelore breed direct, maternal and heterosis effects. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Translational Animal Science, v. 3, n. 4, p. 1286-1295, July 2019. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to determine breed additive and heterosis effects on growth curves, total milk yield (TMY), calf weaning weight (WW), predicted energy intake (EI), and cow efficiency (CE) of purebred and crossbred beef cows raised in Southern Brazil. The data were from 175 purebred and crossbred cows representing eight genetic groups: Angus (A), Hereford (H), Nelore (N), A × H (AH), H × A (HA), A × N (AN), N × A (NA), and Caracu (C) × A (CA). Growth of the cows was modeled using the nonlinear Brody function and machine milking was used to assess TMY. WW was linearly adjusted to 210 d. EI was predicted with an equation in which the independent variables were estimates of parameters of the Brody function and TMY. The ratio of WW to EI estimated CE. Taurine?indicine heterosis effects were significant for all traits, and greater than those for taurine breed crosses. In general, crossbred cows were heavier at maturity, matured earlier, produced more milk, weaned heavier calves, and were predicted to consume more energy. Thus, they were more efficient than purebred cows, despite their greater predicted feed intake. Among the purebreds, A cows matured most rapidly, weighed the least at maturity, produced the most milk, weaned the heaviest calves, were predicted to consume the least energy; and were therefore most efficient among the breeds that were evaluated. These results are useful as inputs to bioeconomic models that can be used to predict productive and economic outcomes from crossbreeding and to facilitate recommendations for beef producers of southern Brazil and other similar subtropical climatic regions. MenosThe objective of this study was to determine breed additive and heterosis effects on growth curves, total milk yield (TMY), calf weaning weight (WW), predicted energy intake (EI), and cow efficiency (CE) of purebred and crossbred beef cows raised in Southern Brazil. The data were from 175 purebred and crossbred cows representing eight genetic groups: Angus (A), Hereford (H), Nelore (N), A × H (AH), H × A (HA), A × N (AN), N × A (NA), and Caracu (C) × A (CA). Growth of the cows was modeled using the nonlinear Brody function and machine milking was used to assess TMY. WW was linearly adjusted to 210 d. EI was predicted with an equation in which the independent variables were estimates of parameters of the Brody function and TMY. The ratio of WW to EI estimated CE. Taurine?indicine heterosis effects were significant for all traits, and greater than those for taurine breed crosses. In general, crossbred cows were heavier at maturity, matured earlier, produced more milk, weaned heavier calves, and were predicted to consume more energy. Thus, they were more efficient than purebred cows, despite their greater predicted feed intake. Among the purebreds, A cows matured most rapidly, weighed the least at maturity, produced the most milk, weaned the heaviest calves, were predicted to consume the least energy; and were therefore most efficient among the breeds that were evaluated. These results are useful as inputs to bioeconomic models that can be used to predict productive and economi... Mostrar Tudo |
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Thesagro: |
Bezerro de Corte; Crescimento; Cruzamento; Gado de Corte; Genética Animal. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/208122/1/Mendonca-et-al-Transl-Anim-Sci-2019-1286-1295.pdf
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Marc: |
LEADER 02445naa a2200241 a 4500
001 2118106
005 2020-01-03
008 2019 bl uuuu u00u1 u #d
100 1 $aMENDONÇA, F. S.
245 $aCrossbreeding effects on growth and efficiency in beef cow-calf systems$bevaluation of Angus, Caracu, Hereford and Nelore breed direct, maternal and heterosis effects.$h[electronic resource]
260 $c2019
520 $aThe objective of this study was to determine breed additive and heterosis effects on growth curves, total milk yield (TMY), calf weaning weight (WW), predicted energy intake (EI), and cow efficiency (CE) of purebred and crossbred beef cows raised in Southern Brazil. The data were from 175 purebred and crossbred cows representing eight genetic groups: Angus (A), Hereford (H), Nelore (N), A × H (AH), H × A (HA), A × N (AN), N × A (NA), and Caracu (C) × A (CA). Growth of the cows was modeled using the nonlinear Brody function and machine milking was used to assess TMY. WW was linearly adjusted to 210 d. EI was predicted with an equation in which the independent variables were estimates of parameters of the Brody function and TMY. The ratio of WW to EI estimated CE. Taurine?indicine heterosis effects were significant for all traits, and greater than those for taurine breed crosses. In general, crossbred cows were heavier at maturity, matured earlier, produced more milk, weaned heavier calves, and were predicted to consume more energy. Thus, they were more efficient than purebred cows, despite their greater predicted feed intake. Among the purebreds, A cows matured most rapidly, weighed the least at maturity, produced the most milk, weaned the heaviest calves, were predicted to consume the least energy; and were therefore most efficient among the breeds that were evaluated. These results are useful as inputs to bioeconomic models that can be used to predict productive and economic outcomes from crossbreeding and to facilitate recommendations for beef producers of southern Brazil and other similar subtropical climatic regions.
650 $aBezerro de Corte
650 $aCrescimento
650 $aCruzamento
650 $aGado de Corte
650 $aGenética Animal
700 1 $aMACNEIL, M. D.
700 1 $aLEAL, W. S.
700 1 $aAZAMBUJA, R. C. C.
700 1 $aRODRIGUES, P. F.
700 1 $aCARDOSO, F. F.
773 $tTranslational Animal Science$gv. 3, n. 4, p. 1286-1295, July 2019.
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Embrapa Pecuária Sul (CPPSUL) |
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