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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 | ESEM analysis of polymeric film in EVA-modified cement paste显示文摘 | SILVA D A MONTEIRO P J M | 2005 | Cement and Concrete Research2005，35，10： | 1 |
| 3 | Estimation of the elastic moduli of lightweight aggregate 显示文摘 | NILSEN A U MONTEIRO P J M GJORV O E | 1995 | Cement and Concrete Research1995，25，2： | 1 |
| 4 | The seasonal cycle of mixed layer dynamics and phytoplankton biomass in the sub- antarctic zone: a high-resolution glider experiment 显示文摘 | SWART S THOMALLA S J MONTEIRO P M S | 2015 | J Mar Syst2015，147，： | 1 |
| 5 | Physical characterization of hydroxyapatite porous scaffolds for tissue engineering 显示文摘 | Teixeira S Rodriguez M A Pena P De Aza A H De Aza S Ferraz M P Monteiro F J | 2009 | Materials Science & Engineering C-Biomimetic and Supramolecular Systems2009，29，5： | 1 |
| 6 | Cardio-respirato-ry function and oxidative stress biomarkers in Nile tilapia exposedto the organophosphate insecticide trichlorfon (NEGUVON? ) 显示文摘 | Thomaz J M Martins N D Monteiro D A | 2009 | Ecotoxicology and Environmental Safety2009，72，5： | 1 |
| 7 | Ahybrid NFC-Bluetooth secure protocol for credit transferamong mobile phones显示文摘 | Monteiro D M Rodrigues J J P C Lloret J | 2014 | Security and CommunicationNetworks2014，7，2： | 1 |
| 8 | Small strain viscoelastic behaviour of wheat gluten-pentosan mixtures 显示文摘 | Santos D M J Monteiro S R Da Silva J A L | 2005 | Eur Food Res Technol2005，，221： | 1 |
| 9 | Alkali-silica Reaction,Part 2:Use of the Double-layer Theory to Explain the Behavior of Reaction-product Gels显示文摘 | Paulo J M Monteiro Garrison Sposito | 1997 | ACI Materials Journal1997，，1： | 1 |
| 10 | Hydration evolution of C3S-EVA composite analyzed by soft X-rays microscopy显示文摘 | SILVA D A MONTEIRO P J M | 2005 | Cement and Concrete Research2005，35，2： | 1 |
| 11 | The elasticmodulus of calcium hydroxide显示文摘 | MONTEIRO P J M CHANG C T | 1995 | Cement and Concrete Research1995，25，8： | 1 |
| 12 | 查看详情显示文摘 | Brouwer H D Schellekens M A J Klumperman B Monteiro M J German A L | | 0，，： | 1 |
| 13 | 查看详情显示文摘 | Monteiro M J de Barbeyrac J | | 0，，13： | 1 |
| 14 | Alkali-silica Reaction,Part 2:The Effect of Chemical Admixtures显示文摘 | Paulo J M Monteiro Garrison Sposito | 1998 | ACI Materials Journal1998，，1： | 1 |
| 15 | Synthesis of Butyl Acrylate-styrene Block Copolymers in Emulsion by Reversible Addition-fragmentation Chain Transfer: Effect of Surfactant Migration upon Film Formation 显示文摘 | Monteiro M J Sjoberg M Van Der Vlist J | 2000 | Polym Sci Part A: Polym Chem2000，38，23： | 1 |
| 16 | Effect of ice formation on the elastic moduli of cement paste and mortar显示文摘 | WANG J A LUBLINER J MONTEIRO P J M | 1988 | Cem ConcrRes1988，18，6： | 1 |
| 17 | Investigation of early growth of calcium hydroxide crystals in cement solution by soft X-ray transmission microscopy显示文摘 | HARUTYUNYAN V S KIRCHHEIM A P MONTEIRO P J M | 2009 | J Mater Sci2009，44，4： | 1 |
| 18 | Influence of mineral admixtures on the alkali-aggregate reaction显示文摘 | MONTEIRO P J M WANG K SPOSITO G | 1997 | Cement and Concrete Research1997，27，12： | 1 |
| 19 | Reliability approach to sercice life perdiction of concrete exposed to marine environments显示文摘 | Prezzi M Geyskens P Monteiro P J M | 1996 | ACI Materials Journal1996，93，6： | 1 |
| 20 | Concrete:a there phase material显示文摘 | Nilsen A U Monteiro P J M | 1993 | Cement and Concrete Research1993，23，11： | 1 |
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