| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
21/08/2023 |
|
Data da última atualização: |
21/08/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
MAIA, G. G.; SIQUEIRA, L. G. B.; VASCONCELOS, C. O. de P.; TOMICH, T. R.; CAMARGO, L. S. de A.; RODRIGUES, J. P. P.; MENEZES, R. A. de; GONÇALVES, L. C.; TEIXEIRA, B. F.; GRANDO, R. de O.; NOGUEIRA, L. A. G.; PEREIRA, L. G. R. |
|
Afiliação: |
GILSON GONÇALVES MAIA, Universidade Federal Fluminense; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; CARLOS OTÁVIO DE PAULA VASCONCELOS, Universidade Federal Fluminense; THIERRY RIBEIRO TOMICH, CNPGL; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; JOÃO PAULO PACHECO RODRIGUES, Universidade Federal do Sul e Sudeste do Pará; RAFAEL ARAÚJO DE MENEZES, Universidade Federal de Minas Gerais; LÚCIO CARLOS GONÇALVES, Universidade Federal de Minas Gerais; BRIDA FAGGION TEIXEIRA, Instituto de Desenvolvimento do Alto Uruguai; RODRIGO DE OLIVEIRA GRANDO, Instituto de Desenvolvimento do Alto Uruguai; LUIZ ALTAMIRO GARCIA NOGUEIRA, Universidade Federal Fluminense; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL. |
|
Título: |
Effects of heat stress on rumination activity in Holstein-Gyr dry cows. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Livestock Science, v. 239, 104092, 2020. |
|
DOI: |
https://doi.org/10.1016/j.livsci.2020.104092 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The objective of this study was to evaluate the effects of heat stress (HS) on: i) time and daily pattern of rumination and ii) in situ degradability in Holstein-Gyr crossbred dry cows. Nine cows, weighing 556.2 ± 97.1 kg were housed in a climate chamber (average THI=83.1) or a freestall barn (average THI=66.5) randomly assigned to treatments in a crossover design. Cows were fed corn silage ad libitum and 1 kg of concentrate as a maintenance diet. To measure rumination, we used a sensor attached to a collar. The in situ ruminal degradability was evaluated by incubation of concentrate, silage, and diet samples into the rumen of a fistulated cow for 6, 24, 48 and 96 h. The RT was affected by HS (P<0.001) and time of the day (P<0.001). The rumination pattern for control and HS cows had a first peak at approximately 04:00h and the magnitude of this peak in HS was 22.9% less than controls. The second RT peak occurred in the evening (~20:00h), when RT in HS was 27.8% less compared with controls. We observed a reduction in dry matter digestibility (DMD) of concentrate (85.1% vs 77.8%, control and HS, respectively; P<0,05) and also in the slow-degradable fraction of concentrate (93.9% vs 85.1%, respectively; P<0,05). Finally, DMD of the diet reduced from 73% to 70% for animals exposed to HS compared to controls. In conclusion, HS negatively affected e rumination time and in situ ruminal degradability in dry dairy cows. |
|
Palavras-Chave: |
Câmara climatizada; Cinética ruminal; THI. |
|
Thesagro: |
Bovino; Digestibilidade; Gado Gir; Gado Holandês; Vaca Leiteira. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 02477naa a2200361 a 4500
001 2156008
005 2023-08-21
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.livsci.2020.104092$2DOI
100 1 $aMAIA, G. G.
245 $aEffects of heat stress on rumination activity in Holstein-Gyr dry cows.$h[electronic resource]
260 $c2020
520 $aThe objective of this study was to evaluate the effects of heat stress (HS) on: i) time and daily pattern of rumination and ii) in situ degradability in Holstein-Gyr crossbred dry cows. Nine cows, weighing 556.2 ± 97.1 kg were housed in a climate chamber (average THI=83.1) or a freestall barn (average THI=66.5) randomly assigned to treatments in a crossover design. Cows were fed corn silage ad libitum and 1 kg of concentrate as a maintenance diet. To measure rumination, we used a sensor attached to a collar. The in situ ruminal degradability was evaluated by incubation of concentrate, silage, and diet samples into the rumen of a fistulated cow for 6, 24, 48 and 96 h. The RT was affected by HS (P<0.001) and time of the day (P<0.001). The rumination pattern for control and HS cows had a first peak at approximately 04:00h and the magnitude of this peak in HS was 22.9% less than controls. The second RT peak occurred in the evening (~20:00h), when RT in HS was 27.8% less compared with controls. We observed a reduction in dry matter digestibility (DMD) of concentrate (85.1% vs 77.8%, control and HS, respectively; P<0,05) and also in the slow-degradable fraction of concentrate (93.9% vs 85.1%, respectively; P<0,05). Finally, DMD of the diet reduced from 73% to 70% for animals exposed to HS compared to controls. In conclusion, HS negatively affected e rumination time and in situ ruminal degradability in dry dairy cows.
650 $aBovino
650 $aDigestibilidade
650 $aGado Gir
650 $aGado Holandês
650 $aVaca Leiteira
653 $aCâmara climatizada
653 $aCinética ruminal
653 $aTHI
700 1 $aSIQUEIRA, L. G. B.
700 1 $aVASCONCELOS, C. O. de P.
700 1 $aTOMICH, T. R.
700 1 $aCAMARGO, L. S. de A.
700 1 $aRODRIGUES, J. P. P.
700 1 $aMENEZES, R. A. de
700 1 $aGONÇALVES, L. C.
700 1 $aTEIXEIRA, B. F.
700 1 $aGRANDO, R. de O.
700 1 $aNOGUEIRA, L. A. G.
700 1 $aPEREIRA, L. G. R.
773 $tLivestock Science$gv. 239, 104092, 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 5 | |
| 3. |  | SILVA, R. R. da; OLIVEIRA, J. E. de M.; SILVA, L. B.; SILVA, C. S. B. da; SILVA, J. G. da; OLIVEIRA, A. C.; SOUZA, I. D. de. Development and longevity of Citrus mealybug Planococcus citri (Risso, 1813) (Insecta: Homoptera: Pseudococcidae) associated with grapevine. African Journal of Agricultural Research, v. 10, n. 35, p. 3543-3547, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Semiárido. |
|    |
| 4. | | MOREIRA, J. N.; CORREIA, R. C.; ARAUJO, J. R. de; SILVA, R. R. da; ARAUJO, G. G. L. de; OLIVEIRA, C. A. V. O comercio de caprinos e ovinos em duas cidades de porte medio do Sertao nordestino. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 37., 2000, Viçosa, MG. Anais... Viçosa, MG: UFV/SBZ, 2000. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 5. | | SILVA, R. R. da; OLIVEIRA, J. E. de M.; SILVA, L. B.; SILVA, J. G. da; SOUZA, I. D.; OLIVEIRA, A. C. Planococcus citri (Risso, 1813) on grapevine: do presence of the male influences reproduction? Journal of Entomology, v. 11, n. 6, p. 330-337, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Semiárido. |
|  |
| Registros recuperados : 5 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
