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Medidas do fluxo de CO2 do solo pelos métodos da absorção alcalina e analisador de gás infravermelho em diferentes sistemas de manejo no Cerrado. RESUMO: Avaliou-se, neste trabalho, o efeito de sistemas de manejo no fluxo de CO2 do solo numa rotação soja-milho, durante um período de 398 dias, de abril de 2000 a maio de 2001, em um Latossolo Ver... ... Repository: BDPA Publication year: 2005
Transcervical embryo recoveries in Santa Inês ewes subjected to short- or long-term superovulatory protocols. Author(s): FONSECA, J. F. da This study compared short- and long-term estrus synchronization in 16 cycling Santa Inês ewes. All ewes were submitted to the two protocols in a cross?over design resulting in replicates #1 and #2 wit... ... Repository: BDPA Publication year: 2020
Effects of flunixin meglumine, recombinant bovine somatotropin and/or human chorionic gonadotropin on pregnancy rates in Nelore cows. The objective was to compare pharmacological strategies aiming to inhibit prostaglandin F2 alpha (PGF2) synthesis (flunixin meglumine; FM), stimulate growth of the conceptus (recombinant bovine somato... ... Repository: BDPA Publication year: 2011
CQESTR: a simple model to estimate carbon sequestration in tropical soils. CQESTR simulates the effect of management practices on soil organic carbon (SOC) stocks. The beta version of the model had been calibrated and validated for temperate regions. Our objective was to eva... ... Repository: BDPA Publication year: 2007
Changes in soil organic carbon during 22 years of pastures, cropping or integrated crop/livestock systems in the Brazilian Cerrado. Author(s): JANTALIA, C. P.; VILELA, L.; MARCHAO, R. L.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. Abstract: In Brazil?s central savanna region, government policy is to encourage the conversion of conventional plough tillage (PT) agriculture to no-till (NT) and raise the productivity of under-utili... ... Repository: BDPA Publication year: 2016
Balanço energético da produção de grãos, carne e biocombustíveis em sistemas especializados e mistos. Author(s): CABALLERO, S. S. U.; JANTALIA, C. P.; SOARES, L. H. de B.; ALVES, B. J. R.; BODDEY, R. M.; MARCHAO, R. L.; VILELA, L. O objetivo deste trabalho foi avaliar a eficiência energética de sistemas especializados e mistos de produção de grãos e carne e o balanço energético na produção de bioenergia. Foram avaliados dados d... ... Repository: BDPA Publication year: 2013
Duration of estrus and time of ovulation in superovulated Santa Inês ewes. Author(s): FONSECA, J. F. da Abstract: The aim of this study was to determine the intervals between sponge removal and the onset of estrus, sponge removal and the first detected ovulation, and onset of estrus and the first ovulat... ... Repository: BDPA Publication year: 2013
Evaluation of superovulatory response in Santa Inês ewes by ultrasonography and laparoscopy. Author(s): VIANA, J. H. M.; FONSECA, J. F. da The development and use of non-invasive techniques would reduce risks of surgery sequels on the same animal and use of the donor could be optimized. The aim of this study was to evaluate the accuracy... ... Repository: BDPA Publication year: 2010
Effect of injectable progesterone on follicular development in lactating beef cows treated with estradiol plus a low-concentration progesterone device. The effect of injectable progesterone was evaluated along with estradiol benzoate (EB) on the fate of the dominant follicle (DF) present in the ovary at the beginning of low progesterone-based TAI pro... ... Repository: BDPA Publication year: 2018
Recovery of reproductive activity and fertility of Saanen goats affected by hydrometra after cloprostenol treatment and estrus induction during the non-breeding season (preliminary data). Author(s): FONSECA, J. F. da; FACO, O. Abstract: The hydrometra is one of the most important causes of subfertility or infertility in dairy goats. The pseudo-pregnant goats are normally recognized only after five months of expected gestati... ... Repository: BDPA Publication year: 2016

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