Pasture Urea
Mostrando 1-12 de 51 artigos, teses e dissertações.
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1. Emissions of Nitrous Oxide and Methane in a Subtropical Ferralsol Subjected to Nitrogen Fertilization and Sheep Grazing in Integrated Crop-Livestock System
ABSTRACT Brazilian agriculture contributes significantly to nitrous oxide (N2O) and methane (CH4) emissions, so the understanding of such emissions at the field is crucial for mitigation strategies. This study quantified the impact of N application and sheep grazing on the N2O and CH4 emissions from a subtropical Ferralsol under an integrated crop-livestock
Rev. Bras. Ciênc. Solo. Publicado em: 19/06/2019
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2. Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization
RESUMO: O objetivo deste trabalho foi avaliar o estabelecimento da pastagem de Panicum maximum cv. Áries em área de proteção ambiental sob influência de níveis variados de interação interespecífica exercidos pela comunidade de plantas daninhas. O experimento foi executado após semeadura da forrageira, delineado em blocos casualizados, no esquema fa
Planta daninha. Publicado em: 18/02/2019
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3. Performance of Nellore calves in tropical pasture consuming different types of concentrated supplements
RESUMO Foi avaliada a utilização de tipos de suplementos concentrados sobre o desempenho de bezerros Nelore em pasto de Urochloa brizantha cv. Marandu na época seca. O experimento foi conduzido em 24ha divididos em 12 piquetes. Foram utilizados 72 bezerros com peso corporal (PC) inicial de 176±14kg por 140 dias de experimento. Os tratamentos foram: miner
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2019-02
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4. Evaluation of blood metabolites in dairy cows grazing under two pasture allowances and supplemented with corn silage under restricted grazing conditions
ABSTRACT This study was conducted to evaluate the influence of management tools - daily pasture allowance and corn silage supplementation - during periods of forage shortage on the metabolism of dairy cows grazing low-mass pasture in temperate regions. Forty lactating Holstein cows were used during an experimental period of seventy days (April 15 to June 23,
R. Bras. Zootec.. Publicado em: 2016-11
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5. Oocyte production in Nellore cows supplemented with long-chain fatty acid soaps
ABSTRACT This study was conducted to evaluate the effects of long-chain fatty acid soaps (LCFAS) of soybean oil on the production and quality of aspirated cumulus-oocyte complexes (COC) of lactating Nellore (Bos taurus indicus) cows. The effects of LCFAS on the plasma concentration of lipoproteins, total cholesterol, triacylglycerol, urea N, and insulin were
R. Bras. Zootec.. Publicado em: 2016-03
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6. 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
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7. Performance of Nellore young bulls on Marandu grass pasture with protein supplementation
The objective of this study was to verify the effect of low-intake supplementation on performance of Nellore young bulls kept on Marandu grass pasture. The experiment was divided in two periods: the dry and rainy seasons. Treatments during the dry period were composed of mineral salt with urea and mineral supplement enriched with true protein and additive. I
R. Bras. Zootec.. Publicado em: 2013-06
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8. Crude glycerin in supplement to primiparous lactating cows grazing on tropical pasture: nutritional and productive characteristics
The objective of this study was to evaluate the nutritional and productive characteristics of primiparous lactating cows grazing on tropical pasture, using different levels of crude glycerin in the supplement. The experiment was conducted at Rancho Santana farm, located in Jequié city, Bahia, Brazil, in the period from December 21, 2010 to March 16, 2011. T
R. Bras. Zootec.. Publicado em: 2013-02
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9. Grão de soja em suplementos múltiplos para novilhas de corte em pastejo / Soybean in multiple supplements for grazing beef heifers
This dissertation was prepared from two experiments with beef heifers submitted to different supplementation strategies on pasture. In the first experiment aimed to evaluate the effect of replacing soybean meal by soybean at different levels in multiple supplements on the nutritional characteristics and productive performance of heifers grazing in Uruchloa d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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10. Early weaning and concentrate supplementation on the performance and metabolic profile of grazing lambs
This study was designed to investigate the effect of early weaning and concentrate supplementation on performance and metabolic profile of lambs in four production systems on pasture: suckling lambs not supplemented until slaughter; suckling lambs supplemented with concentrate in creep feeding until slaughter; early weaned lambs not supplemented until slaugh
Revista Brasileira de Zootecnia. Publicado em: 2012-05
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11. Intake, digestibility and nitrogen use efficiency in crossbred F1 Holstein × Zebu grazing cows
The objective of this study was to evaluate intake, digestibility and nitrogen (N) compounds use efficiency in F1 Holstein × Zebu grazing cows. Eighteen crossbred cows (six Holstein × Gir, six Holstein × Guzerat, and six Holstein × Nellore) were used in the experiment, constituting three experimental treatments in simple random samples, under the same fe
Revista Brasileira de Zootecnia. Publicado em: 2012-04
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12. Production and quality of milk from Mantiqueira dairy cows feeding on Mombasa grass pasture and receiving different sources of roughage supplementation
Production and quality of milk from dairy cows grazing exclusively on Mombasa grass pasture, during the spring-summer period and fed roughage supplementations, during the autumn-winter, were evaluated in two consecutive years. The pasture of 11.4 ha was divided into 57 paddocks of 2,000 m² each, including three replications with 19 paddocks each. The pastur
Revista Brasileira de Zootecnia. Publicado em: 2012-03