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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 | Feature weighting and anomalous cluster initializing in K-Means clustering 显示文摘 | Amorim R C Mirkin B Minkowski M | 2012 | Pattern Recognition2012，45，3： | 1 |
| 3 | Mitochondrial superoxide disrnutase is essential for ethanol tolerance of Saccharomyces cerevisiae in the post-diauxic phase显示文摘 | COSTA V AMORIM M A REIS E | 1997 | Microbiology1997，143，5： | 1 |
| 4 | Use of laccase together with redox mediators to decolourize Remazol Brilliant Blue R 显示文摘 | Graca M B Soares M T Pessoa de Amorim | 2001 | Journal of Bioteehnology2001，89，： | 1 |
| 5 | Study of preantral follicle population in situ and after mechanical isolation from caprine ovaries at different reproduction stages显示文摘 | LUCCI C M AMORIM C A RODRIGUES A P R | 1999 | Animal Reproduction science1999，56，： | 1 |
| 6 | Organization, program, and structure: An analysis of the Chinese in- novation policy framework 显示文摘 | Can H Amorim C Spinoglio M | 2004 | R&D Management2004，34，4： | 1 |
| 7 | Stone fruit injuries and damage at the wholesale market of Sao Paulo Brazil显示文摘 | Amorim L Martins M C Lourenco S A | 2008 | Postharvest Biology and Technology2008，47，： | 1 |
| 8 | Characterisation of ultrafiltration and nanofillxation membranes from rejections of neutral reference solutes using a model of asymmetric pores 显示文摘 | Morro A Pessoa De Amorim M T Lopes A | 2008 | Journal of Membrane Science2008，319，1： | 1 |
| 9 | Dissecting the routing architecture of self-organizing networks显示文摘 | Amorim M D Sichitiu M L Benbadis F | 2006 | IEEE Wireless Communications2006，13，6： | 1 |
| 10 | IL-13 induces CD34+ ceils isolated from G-CSF mobilized blood to differentiate in vitro into potent antigen presenting cells显示文摘 | Lopez M Amorim L Gane P | 1997 | J Immunol Methods1997，208，2： | 1 |
| 11 | Mitochondrial superoxide disrnutase is essential for ethanol tolerance of Saccharomyces cerevisiae in the post-diauxic phase 显示文摘 | Costa V Amorim M A Reis E | 1997 | Microbiology1997，143，5： | 1 |
| 12 | Novel whey- derived peptides with inhibitory effect against angiotensin- eonverting enzyme:in vitro effect and stability to gastroin- testinal enzymes 显示文摘 | Tavares T Contreras M M Amorim M | 2011 | Peptides2011，32，5： | 1 |
| 13 | Leukocyte depletion during CPB: effects on inflammation and lung function显示文摘 | Amorim C G Malbouisson L M da S F C | 2014 | In- flammation2014，37，1： | 1 |
| 14 | Agonistic behaviour and sound production in Gadidae mediterraneus (Gadidae)显示文摘 | ALMADA V C AMORIM M C P PEREIRA E | 1996 | Journal of Fish Biology1996，49，： | 1 |
| 15 | Caries experience in a child population in a deprived area of Brazil, using ICDAS II显示文摘 | de Amorim R Figneiredo M Leal S | 2012 | Clin Oral Investig2012，16，2： | 1 |
| 16 | Cardiac venous ar- terialization in acute myocardial infarction: how great is the benefit 显示文摘 | Munz M Amorim MJ Faria M | 2013 | Interactive Cardiovascular and Troracic Surgery2013，16，3： | 1 |
| 17 | Organization, programme and structure an analysis of the Chinese in- novation policy framework 显示文摘 | Huang C Amorim C Spinoglio M | 2004 | R&D Management2004，34，4： | 1 |
| 18 | Charactefisation of ultmfiltration and nanofiltration monbranes from rejections of neutral reference solutes using a model of asymmetric pores 显示文摘 | Morro A Pessoa De Amorim M T Lopes A | 2008 | Journal of Membrane Science2008，319，1： | 1 |
| 19 | Effect of ultrasound on banana cv Pacovan drying kinetics显示文摘 | AZOUBEL P M BAIMA M A M AMORIM M R | 2010 | Journal of Food Engineering2010，97，2： | 1 |
| 20 | Palladium supported on structured and nonstructured carbon: A consideration of Pd particlesize and the nature of reactive hydrogen显示文摘 | Amorim C Keane M A | 2008 | Journal of Colloid and Interface Science2008，322，1： | 1 |
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