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| Registros recuperados: 20 | |
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| ROTTA, P. P.; VALADARES FILHO, S. C.; MACHADO, F. S.; CAMPOS, M. M.; MARCONDES, M. I.; CARVALHO, B. C. de; SILVA, L. F. C.; SILVA, F. A. S.; MENEZES, A. C. B.; SILVA, L. H. R.. |
| Tipo: Separatas |
Palavras-chave: Gestação.; Nutrição.. |
| Ano: 2003 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/582143 |
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| DIAS, J.; MARCONDES, M. I.; NORONHA, M. F.; RESENDE, R. T.; MACHADO, F. S.; MANTOVANI, H. C.; DILL-McFARLAND, K. A.; SUEN, G.. |
| At birth, calves display an underdeveloped rumen that eventually matures into a fully functional rumen as a result of solid food intake and microbial activity. However, little is known regarding the gradual impact of pre-weaning diet on the establishment of the rumen microbiota. Here, we employed next-generation sequencing to investigate the effects of the inclusion of starter concentrate (M: milk-fed vs. MC: milk plus starter concentrate fed) on archaeal, bacterial and anaerobic fungal communities in the rumens of 45 crossbred dairy calves across pre-weaning development (7, 28, 49, and 63 days). Our results show that archaeal, bacterial, and fungal taxa commonly found in the mature rumen were already established in the rumens of calves at 7 days old,... |
| Tipo: Separatas |
Palavras-chave: Microbiota.; Bactéria; Rúmen.; Archaea; Age; Diet; Dairy calves; Fungi.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1083389 |
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| SILVESTRE, T.; LIMA, M. A.; SANTOS, G. B. dos; PEREIRA, L. G. R.; MACHADO, F. S.; TOMICH, T. R.; CAMPOS, M. M.; JONKER, A.; RODRIGUES, P. H. M.; BRANDAO, V. L. N.; MARCONDES, M. I.. |
| The dairy Nutrients Requirements of Cattle (NRC) was developed using data from purebred Holsteins and it might not accurately predict the performance of crossbred cattle. Our objectives were to evaluate the effects of two feeding levels (FLs) and three breed compositions (BCs) on nutrient intake, digestibility, performance, and methane (CH4) emissions of prepubertal dairy heifers. We used thirty-six heifers from three BCs: purebred Holstein (H), purebred Gyr (G), and F1 Holstein Gyr (HG). Each BC had 12 animals and the experiment was designed as twelve incomplete three by three Latin squares, in a factorial arrangement three by two, with three BCs and two FLs (400 and 800 g/day). Total tract nutrient digestibility was determined using total fecal... |
| Tipo: Artigo de periódico |
Palavras-chave: Eficiência alimentar; Feed efficiency; Novilho Leiteiro; Gado Mestiço; Bovino; Gado Leiteiro; Nutrição Animal; Efeito Estufa; Gás; Crossbreds; Dairy cattle; Animal nutrition; Greenhouse gases. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133781 |
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| RODRIGUES, J. P. P.; LIMA, J. C. M.; CASTRO, M. M. D.; VALADARES FILHO, S. de C.; CAMPOS, M. M.; CHIZOTTI, M. L.; MARCONDES, M. I.. |
| Our objective was to estimate the energy and protein requirements of Holstein young calves up to 87 days old. Forty-two Holstein calves aged 4 days were used. From these, ten were randomly selected and slaughtered to compose the baseline slaughter (BS) group. The remaining calves were randomly assigned to eight treatments in a 4 × 2 factorial using a completely randomized design. The treatments were 2, 4, 6, and 8 kg/day of milk (297 g/kg CP; 319 g/kg of fat) fed twice daily, and then harvested at 59 or 87 days of age. Calves were fed a starter (193 g/kg CP; 133 g/kg NDF) ad libitum in all treatments. The calves slaughtered at 87 days of age had milk replaced by Coast-cross (Cynodoon sp.) hay (125 g/kg CP; 728 g/kg NDF). The net requirement of energy for... |
| Tipo: Separatas |
Palavras-chave: Comparative slaughter; Efficiency of utilization; Growth; Maintenance; Metabolizable protein.; Dairy calves; Holstein; Slaughter; Metabolizable energy.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1058344 |
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| DIJKSTRA, J.; ROTTA, P. P.; SILVA, B. C.; MACHADO, F. S.; CAMPOS, M. M.; SGUIZZATO, A. L. L.; MARCONDES, M. I.; VALADARES FILHO, S. de C.. |
| This study aimed to estimate energy requirements of pregnant Holstein × Gyr cows. Different planes of nutrition were established by two feeding regimens: ad libitum or maintenance. Sixty-two nonlactating cows with average body weight of 480 ± 10.1 kg and an age of 5 ± 0.5 years were used. Cows were divided into three groups: pregnant (n = 44), non-pregnant (n=12), and baseline reference (n = 6). The 56 pregnant and non-pregnant cows were randomly allocated into a feeding regimen: ad libitum or maintenance. To evaluate the effects of days of pregnancy, pregnant and non-pregnant animals were slaughtered at 140, 200, 240, and 270 days of pregnancy. Energy requirements for maintenance differed between pregnant and non-pregnant cows, thus two equations were... |
| Tipo: Artigo de periódico |
Palavras-chave: Gado Leiteiro. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133488 |
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| SILVESTRE, T.; FERREIRA, A. L.; MACHADO, F. S.; CAMPOS, M. M.; TOMICH, T. R.; PEREIRA, L. G. R.; RODRIGUES, P. H. M.; MARCONDES, M. I.. |
| We aimed to determine the energy requirements for maintenance and gain of 18 prepubertal dairy heifers of three breed compositions (BC; Holstein, Gyr, and Holstein × Gyr). Diets were formulated for gains of 0, 400, and 800 g/day, corresponding to 1.0×, 1.5×, and 2.0× maintenance, respectively. Each dairy BC had six animals with an initial body weight (iBW) of 219.8 ± 32 kg, 215.8 ± 33 kg, and 228.3 ± 33 kg for Holstein, Gyr, and Holstein × Gyr, respectively. The experiment was designed as a completely randomized design in a factorial scheme 3 × 3 [three BC and three feeding levels (FL)]. Digestibility and metabolism assays were performed to determine energy losses through feces and urine. Heat production was determined using the continuous measurement of... |
| Tipo: Artigo de periódico |
Palavras-chave: Bioenergetics; Breed composition; Indirect calorimetry; Maintenance; Bovino; Gado Gir; Gado Holandês; Calorimetria; Raça; Manutenção. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146382 |
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| CONGIO, G. F. DE. S.; BANNINK, A.; MAYORGA MOGOLLÓN, O. L.; JAURENA, G.; GONDA, H.; GERE, J. I.; CERÓN-CUCCHI, M. E.; ORTIZ-CHURA, A.; TIERI, M. P.; HERNÁNDEZ, O.; RICCI, P.; JULIARENA, M. P.; LOMBARDI, B.; ABDALLA, A. L.; ABDALLA-FILHO, A. L.; BERNDT, A.; OLIVEIRA, P. P. A.; HENRIQUE, F. L.; MONTEIRO, A. L. G.; BORGES, L. I.; RIBEIRO-FILHO, H. M. N.; PEREIRA, L. G. R.; TOMICH, T. R.; CAMPOS, M. M.; MACHADO, F. S.; MARCONDES, M. I.; MERCADANTE, M. E. Z.; SAKAMOTO, L. S.; ALBUQUERQUE, L. G.; CARVALHO, P. C. DE. F.; ROSSETTO, J.; SAVIAN, J. V.; RODRIGUES, P. H. M.; PERNA JÚNIOR, F.; MOREIRA, T. S.; MAURÍCIO, R. M.; RODRIGUES, J. P. P.; BORGES, A. L. DA C. C.; SILVA, R. R. E.; LAGE, H. F.; REIS, R. A.; RUGGIERI, A. C.; CARDOSO, A. DA. S.; SILVA, S. C. DA; CHIAVEGATO, M. B.; VALADARES-FILHO, S. DE. C.; SILVA, F. A. DE. S.; ZANETTI, D.; BERCHIELLI, T. T.; MESSANA, J. D.; MUÑOZ, C.; ARIZA-NIETO, C. J.; SIERRA-ALARCÓN, A. M.; GUALDRÓN-DUARTE, L. B.; MESTRA-VARGAS, L. I.; MOLINA-BOTERO, I. C.; BARAHONA-ROSALES, R.; ARANGO, J.; GAVIRIA-URIBE, X.; VALDERRAMA, L. A. G.; ROSERO-NOGUERA, J. R.; POSADA-OCHOA, S. L.; ABARCA-MONGE, S.; SOTO-BLANCO, R.; KU-VERA, J. C.; JIMÉNEZ-OCAMPO, R.; FLORES-SANTIAGO, E. DEL. J.; CASTELÁN-ORTEGA, O. A.; VÁZQUEZ-CARRILLO, M. F.; BENAOUDA, M.; GÓMEZ-BRAVO, C. A.; BOLOVICH, V. I. A.; CÉSPEDES, M. A. D.; ASTIGARRAGA, L.; HRISTOV, A. N.. |
| Latin America and Caribbean (LAC) is a developing region characterized for its importance for global food security, producing 23 and 11% of the global beef and milk production, respectively. The region?s ruminant livestock sector however, is under scrutiny on environmental grounds due to its large contribution to enteric methane (CH4) emissions and influence on global climate change. Thus, the identification of effective CH4 mitigation strategies which do not compromise animal performance is urgently needed, especially in context of the Sustainable Development Goals (SDG) defined in the Paris Agreement of the United Nations. Therefore, the objectives of the current study were to: 1) collate a database of individual sheep, beef and dairy cattle records from... |
| Tipo: Artigo de periódico |
Palavras-chave: Mitigação; Mitigation; Metano entérico; Enteric methane; Emissões de gases com efeito de estufa; Aquecimento global; Metano; Bovino; Ovelha; Efeito Estufa; Cattle; Sheep; Methane; Greenhouse gas emissions; Global warming. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132310 |
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| CONGIO, G. F. S.; BANNINK, A.; MAYORGA, O. L.; RODRIGUES, J. P. P.; BOUGOUIN, A.; KEBREAD, E.; SILVA, R. R.; MAURÍCIO, R. M.; SILVA, S. C. DA; OLIVEIRA, P. P. A.; MUÑOZ, C.; PEREIRA, L. G. R.; GÓMEZ, C.; ARIZA-NIETO, C.; RIBEIRO-FILHO, H. M. N.; CASTELÁN-ORTEGA, O. A.; ROSERO-NOGUERA, J. R.; TIERI, M. P.; RODRIGUES, P. H. M.; MARCONDES, M. I.; ASTIGARRAGA, L.; ABARCA, S.; HRISTOV, A. N.. |
| ABSTRACT: Successful mitigation efforts entail accurate estimation of on-farm emission and prediction models can be an alternative to current laborious and costly in vivo CH4 measurement techniques. This study aimed to: (1) collate a database of individual dairy cattle CH4 emission data from studies conducted in the Latin America and Caribbean (LAC) region; (2) identify key variables for predicting CH4 production (g d−1) and yield [g kg−1 of dry matter intake (DMI)]; (3) develop and cross-validate these newly-developed models; and (4) compare models' predictive ability with equations currently used to support national greenhouse gas (GHG) inventories. A total of 42 studies including 1327 individual dairy cattle records were collated.... |
| Tipo: Artigo de periódico |
Palavras-chave: Empirical modeling; Enteric methane; GHG inventory; Prediction equations; Diet; Linear models. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146525 |
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| MARCONDES, M. I.; SILVESTRE, T.; DIJKSTRA, J.; PROVAZZI, F. P.; SILVA, A. L.; VALADARES FILHO, S. C.; CAMPOS, M. M.; MACHADO, F. S.; ROTTA, P. P.. |
| Edição dos Anais do VII International Symposium on Energy and Protein Metabolism and Nutrition, 2022, Granada, Spain. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Bovino; Vaca Leiteira; Gado Leiteiro; Período de Gestação; Proteína; Holstein; Pregnancy; Gestation period. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1148884 |
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| MARCONDES, M. I.; PROVAZZI, F. P.; SILVESTRE, T.; SILVA, A. L.; VALADARES FILHO, S. C.; CAMPOS, M. M.; MACHADO, F. S.; ROTTA, P. P.. |
| We aimed to estimate the protein requirements of pregnant Holstein × Gyr cows. Sixty-one Holstein × Gyr (HG) cows were used, with an average initial BW of 480 ± 10.1 kg and 5 ± 0.5 yrs of age. Cows were divided into 3 groups: pregnant (n = 43), non-pregnant (n = 12), and baseline (n = 6). Baseline animals were slaughtered before starting the experiment to estimate the initial body composition of the remaining animals. Pregnant and non-pregnant cows received 2 diets: maintenance and ad libitum. Pregnant cows were slaughtered at 139, 199, 241, and 268 gestation days (GD). First, we used data only from non-pregnant cows to determine the requirements for maintenance and growth in adult cows. The requirements of metabolizable protein for maintenance (MPm;... |
| Tipo: Artigo de periódico |
Palavras-chave: Bovino; Vaca Leiteira; Gado Leiteiro; Período de Gestação; Proteína; Holstein; Pregnancy; Gestation period. |
| Ano: 2023 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1157260 |
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| Registros recuperados: 20 | |
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