Results 21 to 30 of about 503 (145)

Nitrogênio e época de colheita nos componentes da produtividade de forragem e sementes de capim-mombaça

open access: yesPesquisa Agropecuária Brasileira, 2010
O objetivo deste trabalho foi avaliar o efeito de doses de nitrogênio e de épocas de colheita de sementes sobre componentes de produtividade de forragem e sementes de capim-mombaça (Panicum maximum cultivar Mombaça). Os tratamentos foram constituídos das
Armindo Barth Neto   +6 more
doaj   +1 more source

Digestão do feno de capim-elefante anão (Pennisetum purpureum Schum. cv. Mott) sob diferentes níveis de consumo em ovinos Dwarf elephant grass hay (Pennisetum purpureum Schum. cv. Mott) digestion by sheep at different levels of intake

open access: yesCiência Rural, 2007
Foram utilizados doze ovinos Texel × Corriedale machos, castrados, com 12 meses de idade e peso vivo (PV) inicial médio de 27kg, mantidos em gaiolas de metabolismo, em um delineamento inteiramente casualizado, conduzido em dois períodos, para ...
Jucileia Aparecida da Silva Morais   +6 more
doaj   +1 more source

NIVEL DE ADN-PLOIDÍA EN POBLACIONES SUDAMERICANAS Y NORTEAMERICANAS DE LA GRAMÍNEA NATIVA DISYUNTA Trichloris crinita (CHLORIDOIDEAE, POACEAE)

open access: yesFave: Sección Ciencias Agrarias, 2021
Trichloris crinita es una gramínea nativa de distribución disyunta que habita regiones áridas y semiáridas de Sud y Norteamérica. Trabajos previos mostraron uniformidad en el nivel de ploidía en poblaciones sudamericanas de la especie (2n = 4x = 40); sin
E. J. CARLONI   +3 more
doaj   +1 more source

Functional Diversity of Neotropical Aquatic Hyphomycetes: Insights Into Environmental Drivers

open access: yesBiotropica, Volume 57, Issue 6, November 2025.
Subtropical streams host diverse hyphomycete assemblages than tropical one's. Larger saprotrophs with diverse conidia shapes dominate in subtropical areas. Cold and oxygenated waters have a positive effect on functional diversity. Poor litter in tropical favored the dominance of wood saprotrophs and endophytes.
Renan de Souza Rezende   +6 more
wiley   +1 more source

Suplementação protéica energética no desempenho de novilhas em pastejo durante a fase de terminação Energetic protein supplementation on heifers performance in grazing during the finish phase

open access: yesCiência e Agrotecnologia, 2011
Para estudar o efeito da suplementação da dieta sobre o desempenho de novilhas na fase de terminação mantidas em pastagem de capim-marandu sob lotação intermitente, durante a estação chuvosa, foram utilizadas 20 novilhas cruzadas (¼ Nelore, ¼ Santa ...
Matheus Henrique Moretti   +5 more
doaj   +1 more source

Widespread negative effects of Leucaena leucocephala (white‐popinac) invasion on regenerating areas of the Atlantic Forest

open access: yesEcological Solutions and Evidence, Volume 6, Issue 4, October–December 2025.
Fragment of Atlantic Forest (left) naturally regenerating in an abandoned pasture (centre) and being invaded by a large patch of white‐popinac (Leucaena leucocephala; right). This image summarizes the scenario of invasion by white‐popinac that is directly threatening forest regeneration and its native diversity.
Juliano Zardetto   +2 more
wiley   +1 more source

In situ degradability of corn stover and elephant-grass harvested at four stages of maturity Degradabilidade in situ de híbridos de milho e de capim-elefante colhidos em quatro estádios de maturidade

open access: yesScientia Agricola, 2008
Among tropical forages, corn silage is largely used by farmers trying to explore the maximum genetic potential from the animals. However, other tropical forages, such as elephant-grass (Pennisetum purpureum), are more productive and therefore cheaper to ...
Luis Felipe Prada e Silva   +4 more
doaj   +1 more source

Moth Communities Reveal High Stability Despite Ongoing Compositional Shifts Over Five Years Following Hurricane Disturbance

open access: yesEcology and Evolution, Volume 15, Issue 10, October 2025.
We examined the temporal dynamics and ecological stability of tropical forest moth communities using a unique dataset spanning 6 months before and up to 5 years after two extreme hurricanes. While abundance and richness recovered within 2 years, species composition continued to shift, indicating ongoing reassembly with a directional trajectory toward ...
Aura M. Alonso‐Rodríguez   +3 more
wiley   +1 more source

An exception to the matched filter hypothesis: A mismatch of male call frequency and female best hearing frequency in a torrent frog

open access: yesEcology and Evolution, Volume 7, Issue 1, Page 419-428, January 2017., 2017
The matched filter hypothesis is an important principle in evolutionary biology. Here, we show an important exception for a frog species that inhabits a noisy streamside environment. In this species, the receiver's peripheral auditory frequency sensitivity is mismatched completely with male acoustic signals, which are higher in frequency than those of ...
Longhui Zhao   +6 more
wiley   +1 more source

Comportamento ingestivo de novilhos sob suplementação em pastagens de capim-tanzânia sob diferentes intensidades de desfolhação Chewing activity of supplemented steers in pasture of tanzaniagrass submitted to different defoliation intensity

open access: yesRevista Brasileira de Zootecnia, 2007
Avaliou-se o efeito da intensidade de desfolhação da forragem e da suplementação protéica ou energética sobre o comportamento ingestivo de bovinos de corte.
Ricardo Pereira Manzano   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy