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| 1 | Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures显示文摘Background: Nutrition is one of the most important factors that affect animal performance, and it therefore also impacts on financial results in beef systems. In this way, finding the best strategy for feeding supplements is of paramount importance. Aiming to evaluate the effect of supplement feeding strategies for beef cows in the last third of gestation, two experiments were conducted. In Experiment 1, 35 pregnant Nellore cows were assigned to a completely randomized design with four treatments: control, which received no supplement; supplementation for the last 30 d of gestation(30-d; 3.0 kg/d); supplementation for the last 60 d of gestation(60-d; 1.5 kg/d); or supplementation for the last 90 d of gestation(90-d; 1.0 kg/d). All supplemented treatments received the same total amount of supplement throughout the experiment: 90 kg(20% of crude protein). A second experiment(Experiment 2) was delineated to evaluate the effects of the amounts offered in Experiment 1 on intake and metabolism. Four multiparous pregnant Nellore cows were assigned to a 4 × 4 Latin square design, with periods of15 d each.Results: There was a linear effect of the number of days of supplementation on calving body weight(BW; P < 0.05)and a quadratic effect on BW change from parturition to d 31 post-calving(P < 0.05), with cows on the 60-d strategy losing less BW post-calving. No difference was found in offspring birth BW(P > 0.10). A significant linear effect on interval from parturition to conception(P < 0.05) was observed, with the highest calving to conception interval being observed in the 90-d strategy. The level of supplementation did not affect forage intake or neutral detergent fiber digestibility(P > 0.10). Nitrogen excreted through urine tended to increase linearly with the level of supplementation(P < 0.10).Conclusion: Providing 1.5 kg of supplement during the last 60 d of gestation improves cow performance after calving, reducing the magnitude of BW lost, and reduces the number of days from calving to re-conception in the following breeding season compared to the usually recommended period of supplementation of 90 d pre-partum. | Aline Gomes da Silva Mário Fonseca Paulino Edenio Detmann Henrique Jorge Fernandes Lincoln da Silva Amorim Román Enrique Maza Ortega Victor Valério de Carvalho Josilaine Aparecida da Costa Lima Felipe Henrique de Moura Mariana Benevides Monteiro Jéssika Almeida Bitencourt | 2018 | Journal of Animal Science and Biotechnology2018，9，1： | 2 |
| 2 | Biodiversity hotspots for conservation priorities显示文摘 | Myers N Mittermeier RA Mittermeier CG da Fonseca GAB Kent J | | 0，，： | 1 |
| 3 | Three-year Outcomes after Kyphoplasty in Patients with Osteoporosis with Painful Vertebral Fractures显示文摘 | Christian Kasperk Ingo A. Grafe Sven Schmitt Gerd N?ldge Christel Weiss Katharina Da Fonseca Jochen Hillmeier Martin Libicher Urike Sommer Gottfried Rudofsky Peter-Jürgen Meeder Peter Nawroth | 2010 | Journal of Vascular and Interventional Radiology2010，，5： | 1 |
| 4 | Natural vermiculite as an exchanger support for heavy cations in aqueous solution 显示文摘 | Maria G da Fonseca Michelle M de Oliveira Luiza N H Arakaki | 2005 | Journal of Colloid and Interface Science2005，285，： | 1 |
| 5 | Removal of cadmium, zinc, manganese and chromium cations from aqueous solution by a clay mineral 显示文摘 | Maria G da Fonseca Michelle M de Oliveira Luiza N H Arakaki | 2006 | Journal of Hazardous Materials2006，137，： | 1 |
| 6 | Natural vermiculite as an exchanger support for heavy cations in aqueous solution显示文摘 | Maria G da Fonseca MichcHc M de Oliveira Luiza N H Arakaki | 2005 | Journal of Colloid and Interface Science2005，285，1： | 1 |
| 7 | Biodiversity hotspots for conservation priorities显示文摘 | Myers N Mittermeier RA Mittermeier CG Da Fonseca GAB Kent J | | 0，，： | 1 |
| 8 | Clostridium difficile toxin A attenuates wnt/β-catenin signaling in intestinal epithelial cells显示文摘 | Bezerra Lima B Faria Fonseca B da Graqa Amado N | 2014 | Infect Immun2014，82，7： | 1 |
| 9 | Structural divergence and adaptive evolution in mammalian cytochromes P4502C显示文摘 | D R Fonseca N da Antunes R R A | 2007 | Gene2007，387，12： | 1 |
| 10 | Ecological quality assessment of small estuaries from the Portuguese coast based on benthic macroinvertebrate assemblages indices 显示文摘 | CARDOSO I DA FONSECA L C CABRAL H N | 2012 | Marine Pollution Bulletin2012，64，6： | 1 |
| 11 | Biodiversity hotspots for conservation priorities显示文摘 | Myers N Mittermeise R A Mittermeise C G da Fonseca G A B Kent J | 2000 | Na- ture2000，403，： | 1 |
| 12 | Voids/Cement Ratio Controlling Tensile Strength of Cement-Treated Soils显示文摘 | Consoli N C da Fonseca A V Cruz R C | | 0，，11： | 1 |
| 13 | A multiobjective fuzzy bandwidth partitioning model for self-sizing networks显示文摘 | DRUMMOND A C da FONSECA N L S | 2008 | European Journal of Operational Research2008，191，3： | 1 |
| 14 | Parameters controlling stiffness and strength of artificially cemented soils显示文摘 | Consoli N C da Fonseca A V Silva S R | 2012 | Géotechnique2012，，2： | 1 |
| 15 | Maintenance of CD4+T-cell memory and HIV persistence:keeping memory,keeping HIV显示文摘 | Chomont N Da Fonseca S Vandergeeten C | 2011 | Curr Opin HIV AIDS2011，6，1： | 1 |
| 16 | Natural vermiculite as an exchanger support for heavy cations in aqueous solution显示文摘 | da Fonseca M G de Oliveira M M Arakaki L N H | 2005 | Journal of Colloid and Interface Science2005，285，： | 1 |
| 17 | Natural vermiculite as an exchanger support for heavy cations in aqueous solution显示文摘 | Maria G da Fonseca Michelle M de Oliveira Luiza N H Arakaki Jose G P Espinola Claudio Airoldi | 2005 | Journal of Colloid of Interface Science2005，285，： | 1 |
| 18 | Dengue virus infections显示文摘 | da FONSECA B A FONSECA S N | 2002 | Current Opinion in Pediatrics2002，14，1： | 1 |
| 19 | Biodiversity hot spots for conservation priorities显示文摘 | MYERS N MITTERMEIER R A MITTERMEIER C G da FONSECA G A B KENT J | 2000 | Nature2000，403，： | 1 |
| 20 | Geotechnical characterization by in situ and lab tests to the back-analysis of a supported excavation in Metro do Porto显示文摘 | DA Fonseca A V SILVA S R CRUZ N | 2010 | Geotechnical and Geological Engineering2010，28，3： | 1 |
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