Results: 54

Growth performance and carcass traits of young nellore bulls supplemented with or without addition of lipids

Biosci. j. (Online); 36 (2), 2020
The aim of research was to evaluate the performance and characteristics of the carcasses of Nellore young bulls in grazing supplemented with or without addition of lipids. Twenty–eight young bulls, 301 ± 5.8 kg in body weight, which four constituted the reference group and the twenty-fo...

Number and morphology of tiller age groups during summer in Marandu palisadegrass pastures previously used under deferred grazing

Biosci. j. (Online); 36 (1), 2020
The relative contribution of young, mature and old tillers in the canopy influences the production and structure of the pasture. The objective with this work was to evaluate the balance between tiller appearance and tiller death (BAL) during spring and early summer, the morphology and percentages of youn...

Defoliation dynamics of Brachiaria brizantha pastures with distinct structural characteristics

Biosci. j. (Online); 36 (1), 2020
Although belonging to the same species, different Brachiaria brizantha varieties used for pasture vary significantly in their morphological structure. Therefore, this study starts from the central hypothesis that the defoliation dynamics during the period of occupation by animals in pastures f...

Weed management in glyphosate-resistant maize

Arq. Inst. Biol; 87 (), 2020
The application of glyphosate associated with other herbicides is an important alternative for weed control in maize, to increase control spectrum and to minimize problems with resistance and tolerance from some species to the product. The objective of this work was to evaluate the efficacy, selectivity ...

Fertilization with liquid swine manure increases productivity and improves the quality of Urochloa decumbens

Biosci. j. (Online); 35 (6), 2019
This study aims at assessing the influence of mineral fertilization and biofertilizer from liquid swine manure (LSM) in productivity, levels of crude protein (CP), neutral detergent fiber (NDF) and Acid Detergent Fiber (ADF) of Urochloa decumbens. The experiment was carried out in a red Latosol under a U...

Poisoning by Brachiaria spp. in various lamb breeds at increasing levels of supplementation during growth

Pesqui. vet. bras; 39 (12), 2019
The study evaluate the frequency of poisoning by Brachiaria spp. at the rearing, growth and termination stages in various lamb breeds at increasing supplementation levels. Forty-five lambs were used in the growth phase in pastures of Brachiaria spp. with a history of having induced poisoning. The lambs w...

Perfilhamento do capim-piatã submetido a regimes de desfolhação intermitente

Objetivou-se avaliar o perfilhamento da Brachiaria brizantha cv. Piatã, como base para identificação das frequências e alturas pós-corte mais adequadas para essa gramínea forrageira. Em um esquema fatorial 2 x 2, foram estudadas combinações entre duas frequências de corte (95% e máxima intercep...

Comparison of two collection methods to determine protodioscin concentrations in Brachiaria spp. and to monitor Brachiaria spp. poisoning

Pesqui. vet. bras; 39 (9), 2019
The objective of this study was to evaluate the methods of collecting Brachiaria spp. (Simulated Grazing vs. Total Collection) for the determination of protodioscin concentrations and to monitor the intoxication in sheep susceptible and resistant to poisoning by Brachiaria spp. The collection of Brachiar...

Recalcitrant carbon and nitrogen in agriculture soi ls with residue accumulation and fertilization under tropical conditions

Biosci. j. (Online); 35 (3), 2019
Soil organic matter has a strong relation to total organic carbon, and about 85% of organic carbon consists of humic substances (HS), classified as humin (HU), humic (HA) and fulvic acids (FA), and denominated as recalcitrant carbon in soil. HS are formed by comple...

Production regions and physical quality of Urochloa decumbens CV. Basilisk seeds

Biosci. j. (Online); 35 (1), 2019
Brazil is the largest world producer, consumer and exporter of forage grass seeds. Urochloa decumbens Stapf. species is the second in importance in the Brazilian market of seeds of tropical forage grasses. Seeds are harvested by the soil sweeping method and, in addition to other impurities, h...