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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: |
18/10/2007 |
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Data da última atualização: |
27/02/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIBEIRO, A. R. B.; ALENCAR, M. M. de; COSTA, M. J. R. P. da; NEGRÃO, J. A. |
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Afiliação: |
ANDREA R. BUENO RIBEIRO, UNIABC; MAURICIO MELLO DE ALENCAR, CPPSE; MATEUS J. R. PARANHOS DA COSTA, Unesp/Jaboticabal; JOÃO A. NEGRÃO, FZEA/USP. |
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Título: |
Effects of sire breed-grazing system and environmental parameters on the behaviour of beef calves just after birth. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Applied Animal Behaviour Science, v. 107, n. 3-4, p. 198-205, nov. 2007. |
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DOI: |
10.1016/j.applanim.2006.10.018 |
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Idioma: |
Inglês |
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Conteúdo: |
Effects of sire breed-grazing system and environmental factors on the first activities of high grade Nellore and crossbred Canchim × Nellore, Angus × Nellore, and Simmental × Nellore calves raised in intensive production systems and high grade Nellore calves raised in an extensive production system, after birth, were studied. During 2 years, 185 calves were observed from birth until the end of first suckling, and the following variables were estimated: duration of maternal attention (cow to calf) during the first 15 min after calving, latency to first attempt to stand up, latency to stand up, latency to first suckling, duration of first suckling and the interval from standing to suckling. Data were analyzed by least squares methods, with models that included fixed effects of year and time of the year of birth (March?April (early autumn) and May?June (late autumn)), sire breed-grazing system (Sy), sex of calf (Se), category of cow (primiparous and pluriparous), time of birth, Sy × Se, year × Sy and year × time of the year interactions and the covariates weight of calf, rainfall, air temperature and relative humidity in the day of birth. Calves born from 6:00 to 8:00 h presented the longest latencies to first stand up (40.3 ± 5.1 min) and the shortest occur from 14:00 to 16:00 h (15.8 ± 2.7 min) (P < 0.01). Primiparous cows provided longer attention toward the calf in the first 15 min after birth than pluriparous cows (13.0 ± 0.7 min versus 11.1 ± 0.5 min; P < 0.05). This attention was also shorter in earlier autumn (11.0 ± 0.5 min) and longer in late autumn (13.1 ± 0.8 min) (P < 0.05). Relative to sire breed-grazing system, Nellore calves raised intensively did take longer to stand and to suckle after birth as compared to crossbred calves also raised intensively (P < 0.01). However, grazing system did not affect (P > 0.05) any behaviour variable studied. As regard to sex differences, female calves did take less (P < 0.01) time to suckle after standing than male calves. Results showed that even purebred or crossbred Bos indicus calves in subtropical environmental need extra care when born on rainy days, especially during the first hours of the day. MenosEffects of sire breed-grazing system and environmental factors on the first activities of high grade Nellore and crossbred Canchim × Nellore, Angus × Nellore, and Simmental × Nellore calves raised in intensive production systems and high grade Nellore calves raised in an extensive production system, after birth, were studied. During 2 years, 185 calves were observed from birth until the end of first suckling, and the following variables were estimated: duration of maternal attention (cow to calf) during the first 15 min after calving, latency to first attempt to stand up, latency to stand up, latency to first suckling, duration of first suckling and the interval from standing to suckling. Data were analyzed by least squares methods, with models that included fixed effects of year and time of the year of birth (March?April (early autumn) and May?June (late autumn)), sire breed-grazing system (Sy), sex of calf (Se), category of cow (primiparous and pluriparous), time of birth, Sy × Se, year × Sy and year × time of the year interactions and the covariates weight of calf, rainfall, air temperature and relative humidity in the day of birth. Calves born from 6:00 to 8:00 h presented the longest latencies to first stand up (40.3 ± 5.1 min) and the shortest occur from 14:00 to 16:00 h (15.8 ± 2.7 min) (P < 0.01). Primiparous cows provided longer attention toward the calf in the first 15 min after birth than pluriparous cows (13.0 ± 0.7 min versus 11.1 ± 0.5 min; P < 0.05). This atte... Mostrar Tudo |
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Palavras-Chave: |
Behaviour; Birth; Crossbred calves; Environmental parameters. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02923naa a2200217 a 4500
001 1033074
005 2023-02-27
008 2007 bl uuuu u00u1 u #d
024 7 $a10.1016/j.applanim.2006.10.018$2DOI
100 1 $aRIBEIRO, A. R. B.
245 $aEffects of sire breed-grazing system and environmental parameters on the behaviour of beef calves just after birth.$h[electronic resource]
260 $c2007
520 $aEffects of sire breed-grazing system and environmental factors on the first activities of high grade Nellore and crossbred Canchim × Nellore, Angus × Nellore, and Simmental × Nellore calves raised in intensive production systems and high grade Nellore calves raised in an extensive production system, after birth, were studied. During 2 years, 185 calves were observed from birth until the end of first suckling, and the following variables were estimated: duration of maternal attention (cow to calf) during the first 15 min after calving, latency to first attempt to stand up, latency to stand up, latency to first suckling, duration of first suckling and the interval from standing to suckling. Data were analyzed by least squares methods, with models that included fixed effects of year and time of the year of birth (March?April (early autumn) and May?June (late autumn)), sire breed-grazing system (Sy), sex of calf (Se), category of cow (primiparous and pluriparous), time of birth, Sy × Se, year × Sy and year × time of the year interactions and the covariates weight of calf, rainfall, air temperature and relative humidity in the day of birth. Calves born from 6:00 to 8:00 h presented the longest latencies to first stand up (40.3 ± 5.1 min) and the shortest occur from 14:00 to 16:00 h (15.8 ± 2.7 min) (P < 0.01). Primiparous cows provided longer attention toward the calf in the first 15 min after birth than pluriparous cows (13.0 ± 0.7 min versus 11.1 ± 0.5 min; P < 0.05). This attention was also shorter in earlier autumn (11.0 ± 0.5 min) and longer in late autumn (13.1 ± 0.8 min) (P < 0.05). Relative to sire breed-grazing system, Nellore calves raised intensively did take longer to stand and to suckle after birth as compared to crossbred calves also raised intensively (P < 0.01). However, grazing system did not affect (P > 0.05) any behaviour variable studied. As regard to sex differences, female calves did take less (P < 0.01) time to suckle after standing than male calves. Results showed that even purebred or crossbred Bos indicus calves in subtropical environmental need extra care when born on rainy days, especially during the first hours of the day.
653 $aBehaviour
653 $aBirth
653 $aCrossbred calves
653 $aEnvironmental parameters
700 1 $aALENCAR, M. M. de
700 1 $aCOSTA, M. J. R. P. da
700 1 $aNEGRÃO, J. A.
773 $tApplied Animal Behaviour Science$gv. 107, n. 3-4, p. 198-205, nov. 2007.
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