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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
08/09/2009 |
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Data da última atualização: |
15/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CALEGARE, L.; ALENCAR, M. M. de; PACKER, I. U.; FERRELL, C. L.; LANNA, D. P. D. |
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Afiliação: |
LIANA CALEGARE, ESALQ; MAURICIO MELLO DE ALENCAR, CPPSE; IRINEU UMBERTO PACKER, ESALQ/PIRACICABA; C. L. FERRELL, ESALQ/PIRACICABA; DANTE P. D. LANNA, ESALQ/PIRACICABA. |
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Título: |
Cow/calf preweaning efficiency of Nellore and Bos taurus x Bos indicus crosses. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 87, n. 2, p. 740-747, feb. 2009. |
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DOI: |
10.2527/jas.2007-0759 |
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Idioma: |
Inglês |
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Conteúdo: |
The objectives of this study were to determine if percentage Bos taurus (0 or 50%) of the cow had an effect on ME requirements and milk production, and to compare cow/calf efficiency among 3 mating systems. Metabolizable energy requirements were estimated during a feeding trial that encompassed a gestation and lactation feeding trial for each of 2 groups of cows. Cows were 0 or 50% Bos taurus (100 or 50% Nellore) breed type: Nellore cows (NL; n = 10) mated to Nellore bulls, NL cows (n = 9) mated to Angus bulls, Angus x Nellore (ANL; n = 10) and Simmental x Nellore (SNL; n = 10) cows mated to Canchim (5/8 Charolais 3/8 Zebu) bulls. Cows were individually fed a total mixed diet that contained 11.3% CP and 2.23 Mcal of ME/kg of DM. At 14-d intervals, cows and calves were weighed and the amount of DM was adjusted to keep shrunk BW and BCS of cows constant. Beginning at 38 d of age, corn silage was available to calves ad libitum. Milk production at 42, 98, 126, and 180 d postpartum was measured using the weigh-suckle-weigh technique. At 190 d of age, calves were slaughtered and body composition estimated using 9-10-11th?rib section to obtain energy deposition. Regression of BW change on daily ME intake (MEI) was used to estimate MEI at zero BW change. Increase in percentage Bos taurus had a significant effect on daily ME requirements (Mcal/d) during pregnancy (P < 0.01) and lactation (P < 0.01). Percentage Bos taurus had a positive linear effect on maintenance requirements of pregnant (P = 0.07) and lactating (P < 0.01) cows; during pregnancy, the ME requirements were 91 and 86% of those in lactation (131 ± 3.5 vs. 145 ± 3.4 Mcal·kg?0.75·d?1) for the 0 and 50% B. taurus groups, respectively. The 50% B. taurus cows, ANL and SNL, suckling crossbred calves had greater total MEI (4,319 ± 61 Mcal; P < 0.01) than 0% B. taurus cows suckling NL (3,484 ± 86 Mcal) or ANL calves (3,600 ± 91 Mcal). The 0% B. taurus cows suckling ANL calves were more efficient (45.3 ± 1.6 g/Mcal; P = 0.03) than straightbred NL (35.1 ± 1.5 g/Mcal) and ANL or SNL pairs (41.0 ± 1.0 g/Mcal). Under the conditions of this study, crossbreeding improved cow/ calf efficiency and showed an advantage for cows that have lower energy requirements. MenosThe objectives of this study were to determine if percentage Bos taurus (0 or 50%) of the cow had an effect on ME requirements and milk production, and to compare cow/calf efficiency among 3 mating systems. Metabolizable energy requirements were estimated during a feeding trial that encompassed a gestation and lactation feeding trial for each of 2 groups of cows. Cows were 0 or 50% Bos taurus (100 or 50% Nellore) breed type: Nellore cows (NL; n = 10) mated to Nellore bulls, NL cows (n = 9) mated to Angus bulls, Angus x Nellore (ANL; n = 10) and Simmental x Nellore (SNL; n = 10) cows mated to Canchim (5/8 Charolais 3/8 Zebu) bulls. Cows were individually fed a total mixed diet that contained 11.3% CP and 2.23 Mcal of ME/kg of DM. At 14-d intervals, cows and calves were weighed and the amount of DM was adjusted to keep shrunk BW and BCS of cows constant. Beginning at 38 d of age, corn silage was available to calves ad libitum. Milk production at 42, 98, 126, and 180 d postpartum was measured using the weigh-suckle-weigh technique. At 190 d of age, calves were slaughtered and body composition estimated using 9-10-11th?rib section to obtain energy deposition. Regression of BW change on daily ME intake (MEI) was used to estimate MEI at zero BW change. Increase in percentage Bos taurus had a significant effect on daily ME requirements (Mcal/d) during pregnancy (P < 0.01) and lactation (P < 0.01). Percentage Bos taurus had a positive linear effect on maintenance requirements of pre... Mostrar Tudo |
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Palavras-Chave: |
Breed type; Energy requirement; Maintenance. |
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Thesagro: |
Bos indicus; Bos taurus; Gado de corte. |
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Thesaurus Nal: |
Milk production. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03021naa a2200265 a 4500
001 1417116
005 2023-03-15
008 2009 bl uuuu u00u1 u #d
024 7 $a10.2527/jas.2007-0759$2DOI
100 1 $aCALEGARE, L.
245 $aCow/calf preweaning efficiency of Nellore and Bos taurus x Bos indicus crosses.$h[electronic resource]
260 $c2009
520 $aThe objectives of this study were to determine if percentage Bos taurus (0 or 50%) of the cow had an effect on ME requirements and milk production, and to compare cow/calf efficiency among 3 mating systems. Metabolizable energy requirements were estimated during a feeding trial that encompassed a gestation and lactation feeding trial for each of 2 groups of cows. Cows were 0 or 50% Bos taurus (100 or 50% Nellore) breed type: Nellore cows (NL; n = 10) mated to Nellore bulls, NL cows (n = 9) mated to Angus bulls, Angus x Nellore (ANL; n = 10) and Simmental x Nellore (SNL; n = 10) cows mated to Canchim (5/8 Charolais 3/8 Zebu) bulls. Cows were individually fed a total mixed diet that contained 11.3% CP and 2.23 Mcal of ME/kg of DM. At 14-d intervals, cows and calves were weighed and the amount of DM was adjusted to keep shrunk BW and BCS of cows constant. Beginning at 38 d of age, corn silage was available to calves ad libitum. Milk production at 42, 98, 126, and 180 d postpartum was measured using the weigh-suckle-weigh technique. At 190 d of age, calves were slaughtered and body composition estimated using 9-10-11th?rib section to obtain energy deposition. Regression of BW change on daily ME intake (MEI) was used to estimate MEI at zero BW change. Increase in percentage Bos taurus had a significant effect on daily ME requirements (Mcal/d) during pregnancy (P < 0.01) and lactation (P < 0.01). Percentage Bos taurus had a positive linear effect on maintenance requirements of pregnant (P = 0.07) and lactating (P < 0.01) cows; during pregnancy, the ME requirements were 91 and 86% of those in lactation (131 ± 3.5 vs. 145 ± 3.4 Mcal·kg?0.75·d?1) for the 0 and 50% B. taurus groups, respectively. The 50% B. taurus cows, ANL and SNL, suckling crossbred calves had greater total MEI (4,319 ± 61 Mcal; P < 0.01) than 0% B. taurus cows suckling NL (3,484 ± 86 Mcal) or ANL calves (3,600 ± 91 Mcal). The 0% B. taurus cows suckling ANL calves were more efficient (45.3 ± 1.6 g/Mcal; P = 0.03) than straightbred NL (35.1 ± 1.5 g/Mcal) and ANL or SNL pairs (41.0 ± 1.0 g/Mcal). Under the conditions of this study, crossbreeding improved cow/ calf efficiency and showed an advantage for cows that have lower energy requirements.
650 $aMilk production
650 $aBos indicus
650 $aBos taurus
650 $aGado de corte
653 $aBreed type
653 $aEnergy requirement
653 $aMaintenance
700 1 $aALENCAR, M. M. de
700 1 $aPACKER, I. U.
700 1 $aFERRELL, C. L.
700 1 $aLANNA, D. P. D.
773 $tJournal of Animal Science$gv. 87, n. 2, p. 740-747, feb. 2009.
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| 1. |  | JAKOVAC, C. C.; MEAVE, J. A.; BONGERS, F.; LETCHER, S. G.; DUPUY, J. M.; PIOTTO, D.; ROZENDAAL, D. M. A.; PEÑA-CLAROS, M.; CRAVEN, D.; SANTOS, B. A.; SIMINSKI, A.; FANTINI, A. C.; RODRIGUES, A. C.; HERNÁNDEZ-JARAMILLO, A.; IDÁRRAGA, A.; JUNQUEIRA, A. B.; ZAMBRANO, A. M. A.; JONG, B. H. J. de; PINHO, B. X.; FINEGAN, B.; CASTELLANO-CASTRO, C.; ZAMBIAZI, D. C.; DENT, D. H.; GARCÍA, D. H.; KENNARD, D.; DELGADO, D.; BROADBENT, E. N.; ORTIZ-MALAVASSI, E.; PÉREZ-GARCÍA, E. A.; LEBRIJA-TREJOS, E.; BERENGUER, E.; MARÍN-SPIOTTA, E.; ALVAREZ-DAVILA, E.; SAMPAIO, E. V. de S.; MELO, F.; ELIAS, F.; FRANÇA, F.; OBERLEITNER, F.; MORA, F.; WILLIAMSON, G. B.; COLLETTA, G. D.; CABRAL, G. A. L.; DERROIRE, G.; FERNANDES, G. W.; WAL, H. van der; TEIXEIRA, H. M.; VESTER, H. F. M.; GARCÍA, H.; VIEIRA, I. C. G.; JIMÉNEZ-MONTOYA, J.; ALMEIDA-CORTEZ, J. S. de; HALL, J. S.; CHAVE, J.; ZIMMERMAN, J. K.; EDISON NIETO, J.; FERREIRA, J. N.; RODRÍGUEZ-VELÁZQUEZ, J.; RUÍZ, J.; BARLOW, J.; AGUILAR-CANO, J.; HERNÁNDEZ-STEFANONI, J. L.; ENGEL, J.; BECKNELL, J. M.; ZANINI, K.; LOHBECK, M.; TABARELLI, M.; ROMERO-ROMERO, M. A.; URIARTE, M.; VELOSO, M. D. M.; ESPÍRITO-SANTO, M. M.; SANDE, M. T. van der; BREUGEL, M. van; MARTÍNEZ-RAMOS, M.; SCHWARTZ, N. B.; NORDEN, N.; PÉREZ-CÁRDENAS, N.; GONZÁLEZ-VALDIVIA, N.; PETRONELLI, P.; BALVANERA, P.; MASSOCA, P.; BRANCALION, P. H. S.; VILLA, P. M.; HIETZ, P.; OSTERTAG, R.; LÓPEZ-CAMACHO, R.; CÉSAR, R. G.; MESQUITA, R.; CHAZDON, R. L.; MUÑOZ, R.; DeWALT, S. J.; MÜLLER, S. C.; DURÁN, S. M.; MARTINS, S. V.; OCHOA-GAONA, S.; RODRÍGUEZ-BURITICA, S.; AIDE, T. M.; BENTOS, T. V.; MORENO, V. de S.; GRANDA, V.; THOMAS, W.; SILVER, W. L.; NUNES, Y. R. F.; POORTER, L. Strong floristic distinctiveness across Neotropical successional forests. Science Advances, v. 8, eabn1767, July 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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