355 resultados para Aves Comportamento


Relevância:

30.00% 30.00%

Publicador:

Resumo:

A pomba-asa-branca nidifica em todos os meses do ano no sudeste do Brasil. O material do ninho quebrado dos ramos secos no tpo de rvores ou pgo no cho e levado para construir um ninho frgil e transparente onde ser depositado um ovo. Fmea e macho alternam-se na incubao e na criao do filhote e eles no sujam as bordas dos ninhos com fezes.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The present work aimed at studying the effect of five doses of zinc (0, 1.0, 2.0, 3.0 and 4.0 ppm) in three levels of soil correction. A Dark-Red Latosol, clay texture, oryginally recovered by cerrado vegetation was used. Soybean was used as test plant, cultivated in green-house conditions. The zinc dose affected dry matter production of aerial parts and grain only in the treatments that received the corrective. The concentration of the element in the soil increased linearly with the dose application, and the critical levels in soil (90% of the maximal yield) were between 0.27 and 0.37 ppm of zinc in the treatments with the equivalent to 2.0 t/ha and 3.2 t/ha of lime, respectively.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The objective of this work was to determine the behavioral differences among laying hens reared at different densities and group sizes, in an enriched environment. Isa Brownlaying hens with ages from 30 to 32-week-old, in small-sized and deformed pens, were used. Hens were raised during 28 days in bays with shavings bedding, perch and nest. Two group sizes were evaluated (6 and 12 fowls) and at two rearing densities (774 and 1,440 cm2 by fowl) in a factorial arrangement with three replicates. In fifteen-minute video footages, it was recorded the frequency and the expression period for the following behavior were recorded: feather scratching, sand bath, wing beating, drinking water, pecking, head scratching, earth scratching, eating, perching, leg stretching, pursuing, sitting, and nest visiting. The treatments and the interaction between them had significant effects. The six-hen group increased the frequency of behavior types that indicate fowl frustration, regardless of density. The group size is the most important factor for hen well-being.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Coordenao de Aperfeioamento de Pessoal de Nvel Superior (CAPES)

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Coordenao de Aperfeioamento de Pessoal de Nvel Superior (CAPES)

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Ps-graduao em Cincias Biolgicas (Zoologia) - IBB

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Ps-graduao em Cincias Biolgicas (Zoologia) - IBRC

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Ps-graduao em Cincias Biolgicas (Zoologia) - IBB