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Desempenho Produtivo de Animais de Quatro Raças Zebuínas, Abatidos em Três Estádios de Maturidade. 2. Características da Carcaça
(1999-03-01)
With the aim to study carcass traits, nine Gyr, nine Guzera, nine Nellore and nine Mocho Tabapuã bulls, averaging, respectively, 357.6, 362.0, 368.6, and 376.4 kg of initial live weight and 24 months of age were used in ...
Temporal and spatial patterns based on sediment and sediment-water interface characteristics along a cascade of reservoirs (Paranapanema River, south-east Brazil)
(2005-03-01)
Physical and chemical characteristics of the sediments in a cascade of eight reservoirs located in the Paranapanema River (south-east Brazil) were analysed during two consecutive years during summer (January), autumn ...
Structural variations in root and stem wood of Styrax (Styracaceae) from Brazilian forest and cerrado
(2007-01-01)
The genus Styrax L. (Styracaceae) has a wide distribution in Brazil, occurring in diverse ecosystems. To get a better insight into the ecological adaptations of wood structure, we studied two species, S. camporum and ...
Tamanho Relativo dos Órgãos Internos de Zebuínos sob Alimentação Restrita e Ad libitum
(1999-03-01)
The effects of genetic group and nutritional level on relative size of internal organs were studied. Sixty-three bulls, 16 Gyr, 16 Guzera, 15 Nellore and 16 Mocho de Tabapuã, averaging twenty four months of age, and initial ...
Efeito do Isolamento Térmico de Telhado Sobre o Desempenho de Frangos de Corte Alojados em Diferentes Densidades
(2000-09-01)
The work objective was to evaluate the effect of using a thermal insulating material installed as lining under the roof, on broiler performance, on environmental conditions of different broiler chickens stocking densities ...
Efeito do Manejo Sobre a Produção e Composição Química de Perfilhos do Capim-Colonião (Panicum maximum Jacq.)
(2000-11-01)
The effects of cutting frequency of 28, 35 and 42 days, performed in December, January and February at 0 cm, 15 cm and 30 cm from the ground on the chemical composition and tiller production of Panicum maximum Jacq were ...
Mass fractal characteristics of silica sonogels as determined by small-angle x-ray scattering and nitrogen adsorption
(2005-01-01)
A sample series of silica sonogels was prepared using different water-tetraethoxysilane molar ratio (r w) in the gelation step of the process in order to obtain aerogels with different bulk densities after the supercritical ...
Influência da retirada de digesta abomasal, para estudos de digestão parcial, sobre a digestibilidade aparente de nutrientes com bovinos
(1997-09-01)
The objective of this trial, using 21 abomasal fistulated bovines, eight months of age and 187 kg of liveweight, was to evaluate the digestibility coefficients of diets containing different protein sources (dry yeast, urea, ...
Bioaccumulation of Potentially Toxic Elements in Lettuce and Soil Fertility Treated with Biosolid
(2022-03-01)
The use of biosolids in agriculture contributes to soil fertility and plant nutrition. However, the presence of potentially toxic elements (PTEs) can limit its use as a fertilizer. In this context, we propose to evaluate ...
Heavy metals: The main factor limiting the agricultural use of sewage sludge
(2017-01-01)
Heavy metals occur naturally in rocks and soils being natural constituents of the Earth's crust that are rarely toxic. The excess heavy metals in soil originate from other sources, which include sewage improper stacking ...