Beef Cattle In Pastures
Mostrando 1-12 de 44 artigos, teses e dissertações.
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1. Beef cattle performance on signal grass pastures deferred and fertilized with nitrogen
RESUMO Foi avaliado o efeito de quatro doses de nitrogênio (0, 40, 80 e 120kg N ha -1 ), aplicadas antes do diferimento, sobre o desempenho de bovinos e as características estruturais de Urochloa decumbens (capim-braquiária), de janeiro a outubro de 2012 e de janeiro a setembro de 2013. Um delineamento de blocos ao acaso foi utilizado em arranjo de medid
Arq. Bras. Med. Vet. Zootec.. Publicado em: 10/10/2019
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2. Production and nutritive value of pastures in integrated livestock production systems: shading and management effects
ABSTRACT This study aimed to evaluate the production characteristics of pastures in integrated livestock production systems. For that, an experiment was carried out in São Carlos, SP, Brazil, from 2013 to 2015. Forage development, production and nutritive value were evaluated in five beef cattle production systems: extensive continuous stocking (Urochloa de
Sci. agric. (Piracicaba, Braz.). Publicado em: 02/09/2019
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3. Citrus pulp-based supplement reduces the detrimental effects of high grazing pressure on the performance of beef cattle under a rotational system of Urochloa brizantha
RESUMO Os objetivos foram avaliar o desempenho de tourinhos em duas estratégias de pastejo e a suplementação energética em um sistema de lotação rotacionadade capim marandu (Urochloa brizantha) e avaliar a composição morfológica e bromatológica da gramínea. Oitenta bezerros não castrados com 8 meses de idade [224 ± 2,4 kg peso vivo (PV)] distrib
Rev. bras. saúde prod. anim.. Publicado em: 15/07/2019
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4. Soil carbon stock and humification in pastures under different levels of intensification in Brazil
ABSTRACT: Intensive management of tropical pastures has shown potential for greenhouse gas (GHG) mitigation due to high forage production and C accumulation in the soil. This study aimed to evaluate different pasture management options in relation to their effect on soil C stocks and soil organic matter (SOM) humification. Pastures in four beef cattle produc
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-02
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5. Beef cattle performance in response to Ipyporã and Marandu brachiariagrass cultivars under rotational stocking management
ABSTRACT The objective of this two-year study was to evaluate live weight gain per animal and per area and their relationships with the characteristics of BRS Ipyporã (Brachiaria ruziziensis × Brachiaria brizantha) and Marandu (Brachiaria brizantha) pastures. A completely randomized block design was used with two treatments and four replicates. The grazing
R. Bras. Zootec.. Publicado em: 29/11/2018
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6. Challenges of beef cattle production from tropical pastures
ABSTRACT The live weight gain of cattle on tropical pastures is reviewed and found to be low and dependent on the length of the growing season. Supplements may be added to address the primary limiting nutrient, which, in the dry season, is crude protein. The response relationships of live weight gain to level of supplement (protein or energy) that have been
R. Bras. Zootec.. Publicado em: 25/06/2018
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7. População de protozoários ruminais em novilhos zebuínos alimentados com ou sem volumoso
ABSTRACT This study aimed to quantify and identify the profile of the rumen protozoa population of beef steers fed with or without roughage. Nellore crossbred steers raised in extensive system on lignified tropical pastures with mineral supplementation and steers confined for 60 days only receiving pelletized concentrate and whole corn kernels were evaluated
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2017-10
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8. Where is sugarcane cropping expanding in the brazilian cerrado, and why? A case study
ABSTRACT Sugarcane growing area in Brazil sharply expanded between 2000 and 2010 due to the increasing world demand for sugar and ethanol. Since this expansion of sugarcane is said to occur in areas covered by degraded pastures, it is likely not threatening the environment or food production. In order to verify this assumption, we investigate at farm and fie
An. Acad. Bras. Ciênc.. Publicado em: 14/08/2017
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9. Effects of supplementation frequency on the ruminal fermentation and enteric methane production of beef cattle grazing in tropical pastures
The objective of this study was to evaluate the characteristics of ruminal fermentation and enteric methane production in beef cattle subjected to different supplementation frequencies while grazing on Brachiaria brizanthacv. Marandu pastures. Nine cattle (325±65.7 kg BW) fitted with ruminal and duodenal cannulas were used in the ruminal fermentation study,
R. Bras. Zootec.. Publicado em: 2014-11
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10. Effects of post-grazing forage mass on a beef cattle grazing system on Tanzânia grass pastures
The objective of this study was to evaluate the effect of grazing intensity on herbage accumulation, animal performance, and total system yield on irrigated Tanzania grass pastures under rotational stocking. The experiment was conducted from October 1999 to January 2001, in a complete randomized block design with four replications. Treatments consisted of th
R. Bras. Zootec.. Publicado em: 2014-06
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11. Whole or ground millet grain provided in two supplementation frequencies for grazing beef cattle: nutritional parameters
The objective of this study was to evaluate the processing of millet grain provided at two supplementation frequencies for grazing beef cattle during the dry season on nutritional parameters. Five rumen-cannulated crossbred steers, with 24 to 26 months of age and average body weight of 428.6±26.06 kg, were assigned to a Latin square design (5 × 5) in a 2 �
R. Bras. Zootec.. Publicado em: 2014-05
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12. Reducing supplementation frequency for Nellore beef steers grazing tropical pastures
Reduced supplementation frequency is a broadly applied management practice. Ruminants consuming low quality forages/pastures, supplemented less than once daily are able to maintain body weight gain (BWG), efficiency of use of dry matter, nitrogen and other nutrients, as compared with animals supplemented once daily. We evaluated the feeding behavior, dry mat
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-04