Tropical Forage
Mostrando 25-36 de 129 artigos, teses e dissertações.
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25. Nutritional performance of cattle grazing on low-quality tropical forage supplemented with nitrogenous compounds and/or starch
The objective of this work was to evaluate the effects of protein and/or starch supplementation on the nutritional performance of cattle grazing on low-quality tropical forage. Five crossbred steers (Holstein × Gyr) with an average body weight (BW) of 397 kg that were fitted with ruminal and abomasal cannulae were used. The animals were kept in individual s
R. Bras. Zootec.. Publicado em: 2013-09
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26. The chemical composition, fermentation profile, and microbial populations in tropical grass silages
The objective of this study was to evaluate the fermentation profile, chemical composition and microbial population and losses in the silages of signalgrass and Mombasa grass fertilized with the following levels of nitrogen (N): 0, 30, 60 and 90 kg/ha. The grasses were harvested at 70 days of regrowth, chopped and then ensiled in laboratory silos that had 20
R. Bras. Zootec.. Publicado em: 2013-09
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27. Growth and productive responses of tropical grass Panicum maximum to nitrate and ammonium supply
This study was conducted to investigate growth response parameters and forage yield of Panicum maximum Jacq. plants supplied with nitrate (NO3-) and ammonium (NH4+) as N source in a nutrient solution. Six NO3- and NH4+ combinations were tested at the following proportions: 100-0, 85-15, 70-30, 55-45, 40-60 and 25-75%. Grass shoot (number of tillers and leave
R. Bras. Zootec.. Publicado em: 2013-09
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28. Morphology of seeds and seedlings of four species of Vigna Savi (Leguminosae, Phaseolinae)
Four neotropical species of Vigna Savi (Leguminosae, Phaseolinae) have potential value as forage crops or ornamentals and could be cultivated in tropical or subtropical areas, even on floodplains. In order to obtain useful data for their culture and taxonomy, the seed morphology, germination pattern (hypogeal or epigeal) and seedling development were studied
Acta Bot. Bras.. Publicado em: 2013-09
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29. Ingestive behavior, performance and forage intake by beef heifers on tropical pasture systems
The experiment was carried out to evaluate forage intake, performance and ingestive behavior of beef heifers. Productive, structural and chemical characteristics of the pasture were also evaluated. The experimental design was completely randomized in a 3 × 2 factorial arrangement, with three pasture systems (Alexandergrass [Urochloa plantaginea Link.] with
R. Bras. Zootec.. Publicado em: 2013-08
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30. Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas
The experiment was carried out on Cynodon spp cv. Tifton 85 pastures grazed by sheep under rotational stocking, with the objective of evaluating the structural characteristics as well as the forage mass of the pastures subjected to three grazing intensities in successive cycles. Treatments were composed of three residual leaf area indices (rLAI; 2.4; 1.6 and
R. Bras. Zootec.. Publicado em: 2013-04
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31. Caracterização microbiológica, parâmetros fermentativos e estabilidade aeróbia em silagens de forragens tropicais com aditivos microbianos / Microbiologic characterization, fermentative parameters and aerobic stability of tropical forage silages with microbial additives
Foram realizados dois experimentos para avaliação de aditivos microbianos na ensilagem de forragens tropicais. No primeiro experimento avaliou-se o efeito de doses crescentes de Lactobacillus buchneri, em diferentes tempos de armazenamento, sobre o valor nutritivo, perfil fermentativo e estabilidade aeróbia de silagens de milho. No segundo experimento ava
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/10/2012
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32. DRY MATTER ACCUMULATION IN CULTIVARS BRACHIARIA BRIZANTHA SUBJECTED TO INTENSITIES OF DEFOLIATION. / ACÚMULO DE MASSA SECA DE CULTIVARES EM BRACHIARIA BRIZANTHA SUBMETIDA A INTENSIDADES DE DESFOLHAÇÃO.
O objetivo deste trabalho foi avaliar o efeito de diferentes intensidades de desfolhação no acúmulo de matéria seca, composição morfológica e resíduo de forragem em diferentes cultivares de Brachiaria brizantha. Os tratamento consistiram em três cultivares de Brachiaria brizantha (Marandú, Xaraés e MG4) e quatro intensidades de desfolhação (10,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/07/2012
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33. ESTUDO DA RECRIA DE NOVILHAS DE CORTE EM PASTAGENS CULTIVADAS DE VERÃO / STUDY OF BEEF HEIFERS REARING ON WARM-SEASON PASTURES
Heifers rearing is a determinant step of efficiency in beef cattle production systems on pastures. Several experiments have tested alternative uses for tropical grasses to heifers rearing. In order to summarize results and making not visible relationships evident in these individual experiments an analysis was performed in a set of data from six experiments
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/03/2012
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34. Suplementação nitrogenada ruminal e/ou abomasal em bovinos alimentados com forragem tropical de alta qualidade / Ruminal and/or abomasal nitrogen supplementation in cattle fed high-quality tropical forage
Objetivou-se avaliar os efeitos da suplementação com compostos nitrogenados no rúmen e/ou no abomaso sobre o consumo, a digestibilidade, dinâmica ruminal e os parâmetros do metabolismo de compostos nitrogenados em bovinos alimentados com forragem tropical de alta qualidade. Foram utilizados quatro novilhos da raça Nelore, não castrados, com peso corpo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2012
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35. Using genetic diversity information to establish core collections of Stylosanthes capitata and Stylosanthes macrocephala
Stylosanthes species are important forage legumes in tropical and subtropical areas. S. macrocephala and S. capitata germplasm collections that consist of 134 and 192 accessions, respectively, are maintained at the Brazilian Agricultural Research Corporation Cerrados (Embrapa-Cerrados). Polymorphic microsatellite markers were used to assess genetic diversity
Genet. Mol. Biol.. Publicado em: 13/11/2012
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36. Aerobic fungi in the rumen fluid from dairy cattle fed different sources of forage
The objective of this study was to evaluate the aerobic microbiota of the rumen fluid from Holstein cows and heifers fed different tropical forage in the north of Minas Gerais, Brazil. A total of 30 samples of rumen fluid from cows fed with sorghum silage were collected: 32 from cows fed Brachiaria brizantha, 12 from heifers that received sorghum silage and
R. Bras. Zootec.. Publicado em: 2012-11