Beef Steers
Mostrando 13-24 de 72 artigos, teses e dissertações.
-
13. Risk assessment of finishing beef cattle in feedlot: slaughter weights and correlation amongst input variables
The objective of this study was to evaluate the risk associated with finishing crossbred Charolais × Nellore steers in feedlot at different slaughter weights (425, 467 or 510 kg), considering or disregarding the correlation amongst random input variables. Data were collected from 2004 to 2010 and used in the simulation of the financial indicator Net Present
R. Bras. Zootec.. Publicado em: 2014-02
-
14. Total digestible nutrient levels in supplements for finishing steers in the rainy season: nutritional characteristics and microbial efficiency
The objective of this study was to evaluate the effects of total digestible nutrient (TDN) levels in supplements on rumen pH, ruminal ammonia nitrogen concentration, intake and digestibility, nitrogen balance and microbial efficiency in beef cattle grazing on Marandu grass during the rainy season. The supplements comprised a mineral mixture, ground corn grai
R. Bras. Zootec.. Publicado em: 2013-11
-
15. Rumen fermentation and rumen microbes in Nellore steers receiving diets with different lipid contents
The objective of the present study was to evaluate the effects of dietary lipid content (20, 40 and 60 g/kg dry matter) on intake, total and ruminal apparent digestibility of dry matter (DM), nutrient digestibility, rumen fermentation parameters, microbial synthesis efficiency and rumen microbial content of beef cattle. Nine cannulated steers at 6 months of
R. Bras. Zootec.. Publicado em: 2013-03
-
16. Relações entre eficiência alimentar, características de carcaça e qualidade de carne de novilhos Nelore confinados / Feed efficiency and its relationships with profitability, carcass characteristics and meat quality of Nellore steers
Although Brazil has the largest commercial beef cattle herd of the world, research on genetic improvement of beef cattle for feed efficiency is incipient. Some countries have invested in studies to identify feed efficient animals and to find molecular markers associated with this characteristic. Genetic selection of efficient animals can resulting lower cost
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
-
17. Substituição do farelo de soja por fontes de nitrogênio não-protéico em bovinos Nelore / Replacement of soybean meal for non protein nitrogen on Nellore steers
Capítulo 2: Estudos vêm sendo realizados na tentativa de se avaliar os efeitos da manipulação da nutrição protéica, devido à sua importância no metabolismo e desempenho de bovinos. O presente estudo teve como objetivo identificar a melhor fonte de nitrogênio não-proteico (uréia, uréia de liberação lenta ou a combinação destas) em substituiç
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
-
18. Injeção post-rigor de cloreto de cálcio no músculo semimembranoso de novilhos suplementados com zilpaterol : propriedades físico-químicas e sensoriais da carne / Post-injection accuracy of calcium chloride in semimembranosus muscle of steers supplemented with zilpaterol : physico-chemical and sensory characteristics of meat
Dois estudos foram conduzidos para determinar o efeito da injeção de cloreto de cálcio nas características de palatabilidade e na estabilidade da cor de bifes de coxão mole (M. Semimembranoso) de bovinos suplementados com hidrocloreto de zilpaterol (HZ). No estudo 1 (palatabilidade), 466 bovinos foram divididos em 2 grupos, não-suplementados (n = 233)
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/02/2012
-
19. Prediction of retail beef yield, trim fat and proportion of high-valued cuts in Nellore cattle using ultrasound live measurements
The objective of this study was to develop equations to predict retail product and fat trim (weights and percentages) for Nellore (Bos indicus) cattle. Live ultrasound measurements of the longissimus muscle area, backfat thickness at the 12th rib and rump fat depth and shrunk body weight were obtained from 218 Nellore steers to predict weights and percentage
R. Bras. Zootec.. Publicado em: 2012-09
-
20. Relationship between temperament with performance and meat quality of feedlot steers with predominantly Charolais or Nellore breed
The relation between temperament with performance and meat quality was determined in 79 Charolais × Nellore steers kept in feedlot. Temperament was evaluated according to exit velocity, scale composite score and flight distance four times in the finishing phase, along with body weight, intake and feed conversion measures. Cattle were classified as calm, int
Revista Brasileira de Zootecnia. Publicado em: 2012-06
-
21. Quality of the forage apparently consumed by beef calves in natural grassland under fertilization and oversown with cool season forage species
The objective of this study was to evaluate the chemical composition of the forage apparently consumed by steers in a natural grassland on region of Campanha, in Rio Grande do Sul, Brazil, subjected or not to different inputs: NP - natural pasture without inputs; FNP - fertilized natural pasture and INP - improved natural grassland with fertilization and ove
Revista Brasileira de Zootecnia. Publicado em: 2012-06
-
22. Carcass characteristics and meat quality of Aberdeen Angus steers finished on different pastures
The present study was conducted to assess carcass features, physicochemical and sensory parameters of meat from steers finished on three types of pastures: natural pasture; natural pasture improved, fertilized and oversown with winter species; and annual summer grassland. The experiment was conducted from December 14, 2009 to November 30, 2010, with treatmen
Revista Brasileira de Zootecnia. Publicado em: 2012-04
-
23. Perdas na ensilagem e desempenho de bovinos de corte suplementados com dietas contendo silagem de capim-marandu em duas idades de rebrotação tratadas com inoculante bacteriano / Silage losses and performance of beef cattle fed diets with Marandu grass silages at two ages of regrowth treated with bacterial inoculant
Three experiments were carried out to evaluate intake and the partial and total nutrient apparent digestibilities, nitrogen compounds balance, microbial efficiency, rumen traits and the performance of beef cattle fed diets based on Brachiaria brizantha cv Marandu at two ages of regrowth with and without microbial inoculant Sil ALL C4 (Alltech Brazil), as wel
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2011
-
24. Beef quality traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers fed at the maintenance level or ad libitum with two concentrate levels in the diet
This trial was conducted to evaluate some beef quality attributes of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers finished on feedlot. The effects of feeding regime and genetic group on shear force, thawing losses, cooking (leak + evaporation) losses, total losses and muscle fiber type, as well as carcass pH and temperature during 24 h of
Revista Brasileira de Zootecnia. Publicado em: 2011-12