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| Registros recuperados: 129 | |
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| East, Miriam. |
| In the Mackay Whitsunday region, the dominant grazing based operations are small intensive systems that heavily utilise soil, nutrient and chemical management practices. To improve water quality entering the Great Barrier Reef, graziers are being encouraged to adopt improved management practices. However, while there is good understanding of the management changes required to reach improved practice classification levels, there is poor understanding of the likely economic implications for a grazier seeking to move from a lower level classification to the higher level classifications. This paper provides analysis of the costs and benefits associated with adoption of intensive grazing best management practices to determine the effect on the profitability and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Grazing; Management practices; Incentives; Mackay Whitsunday; Farm Management. |
| Ano: 2010 |
URL: http://purl.umn.edu/59070 |
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| Figueiredo, Darcilene Maria de; Programa de Pós-graduação em Zootecnia, Universidade Federal de Viçosa, Viçosa-MG; Paulino, Mário Fonseca; Programa de Pós-graduação em Zootecnia, Universidade Federal de Viçosa, Viçosa-MG; Detmann, Edenio; Programa de Pós-graduação em Zootecnia, Universidade Federal de Viçosa, Viçosa-MG; Souza, Marcos Gonçalves de; Programa de Pós-Graduação, Universidade Estadual Paulista, Jaboticabal-SP; Couto, Victor Rezende Moreira; Programa de Pós-graduação em Zootecnia, Universidade Federal de Viçosa, Viçosa-MG; Sales, Maykel Franklin Lima; Programa de Pós-graduação em Zootecnia, Universidade Federal de Viçosa, Viçosa-MG. |
| Objetivou-se avaliar suplementos formulados com diferentes fontes de proteína, no período das águas, sobre o desempenho produtivo de novilhas de corte em recria. Para avaliar o desempenho produtivo, 20 novilhas mestiças Holandês x Zebu e aneloradas, com peso corporal médio de 234 kg e idade aproximada de 14 meses, foram distribuídas em cinco piquetes de B. decumbens Stapf de 2,5 ha cada, em delineamento inteiramente casualizado, com cinco tratamentos e quatro repetições. Os suplementos foram à base de farelo de soja (FS), farelo de algodão 38% PB (FA38), farelo de glúten de milho 60% PB (GM) e farelo de trigo + ureia (FT), além de um tratamento-testemunha, constituído apenas de mistura mineral (MM). A quantidade diária de suplemento foi fixada para... |
| Tipo: Pesquisa de campo; análise laboratorial |
Palavras-chave: 5.04.03.00-1 Nutrição e Alimentação Animal desempenho; Fêmeas; Pastejo; Suplementação. Nutrição e Alimentação Animal performance; Females; Grazing; Supplementation.. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/1372 |
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| MENEZES,LUCIANA S.; MÜLLER,SANDRA C.; OVERBECK,GERHARD E.. |
| ABSTRACT The natural vegetation of Southern Brazil's coastal region includes grasslands formations that are poorly considered in conservation policy, due to the lack of knowledge about these systems. This study reports results from a regional-scale survey of coastal grasslands vegetation along a 536 km gradient on southern Brazil. We sampled 16 sites along the coastal plain with 15 plots (1 m²) per site. All sites were grazed by cattle. We estimated plant species cover, vegetation height, percentage of bare soil, litter and manure, and classified species according to their growth forms. We found 221 species, 14 of them exotic and two threatened. The prostate grasses: Axonopus aff.affinis, Paspalum notatum and P. pumilumwere among the most important... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pampa biome; Campos; Conservation; Grazing; Sandy soil. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502081 |
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| Mathieu, M; Leflaive, J; Ten Hage, L; De Wit, R; Buffan Dubau, E. |
| The aim of the present study was to examine the effects of biofilm-dwelling nematode activity on the oxygen turnover of cultured diatom biofilms. Oxygen microprofiles were simultaneously measured using the microelectrode technique in biofilms incubated with and without nematodes during short-term (24 h) and medium-term (6 d) experiments. During 24 h nycthemeral incubations, maximum oxygen concentrations and oxygen peak depths of microprofiles, as well as net oxygen production rates, were significantly higher in the diatom biofilms with nematodes. These effects might be dependent on the densities of nematodes. In the present study, significant effects were observed at nematode densities exceeding 100 ind. cm(-2), but not at a density <50 ind. cm(-2).... |
| Tipo: Text |
Palavras-chave: Bioturbation; Grazing; Net production rate; Oxygen community metabolism; Microelectrode; Oxygen microprofile; Nematodes; Diatom biofilms. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3607.pdf |
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| Collos, Y; Descolas Gros, C; Mornet, Francoise. |
| During parallel sampling of seawater samples in bottles and in free water (1000-2000 m(3) clay ponds), we have measured phytoplankton biomass, Ribulose biphosphate carboxylase (Rubisco), phosphoenol pyruvate carboxylase, and phosphoenol pyruvate carboxykinase activities and major nutrients (ammonium, nitrate, phosphate, silicate). This was done in two ecosystems: one with high grazing pressure due to the presence of oysters and another with low grazing pressure (no oysters). In the ecosystem subjected to high grazing pressure, anaplerotic carbon fixation by phytoplankton in free water was higher in the light period and could represent 25% of total carbon fixation. Incubating samples in bottles led to a major increase in Rubisco activity (80% in 3 h)... |
| Tipo: Text |
Palavras-chave: Grazing; Carboxylases; Carbon assimilation; Anaplerotic; Ammonium. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-6437.pdf |
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| Núñez,Pedro; Demanet,Rolando; Matus,Francisco; Mora,Maria de la Luz. |
| The grazing management of grassland has a direct effect on nitrogen (N) recycling. This is an important reason why management has become an alternative to improve the grassland production and quality, in turn to make it more suitable for the environment. However, the livestock system intensification induces changes in the natural dynamics of the N cycle, accelerating gas emmisions (e.g. ammonia, NH3 and nitrous oxide, N(2)0) and leaching losses from soil under grazing. When the amount of N in the environment increases, there is an impact on smog episodes, global warming, stratospheric ozone depletion, acid rain and eutrophication of fresh water. There are different techniques to evaluate the gases emitted from the soil. This klonowledge is useful to design... |
| Tipo: Journal article |
Palavras-chave: Ammonia; Grazing; Management; Nitrogen; Nitrous oxide; Livestock. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912007000300006 |
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| Santos,Manoel Eduardo Rozalino; Fonseca,Dilermando Miranda da; Gomes,Virgílio Mesquita; Braz,Thiago Gomes dos Santos; Silva,Simone Pedro da; Albino,Ronan Lopes; Santos,Andreza Luzia; Silva,Guilherme Portes. |
| This study was conducted to evaluate the defoliation patterns on B. decumbens cv. Basilisk (signalgrass) tiller as a function of influence of feces deposited naturally by cattle. The signalgrass was managed with an average height of 25 cm, under continuous stocking and variable stocking rate. Interval and intensity of defoliation, grazing efficiency and forage loss were evaluated in two sites on pasture - one close and the other distant from feces. The completely randomized block design with three replications was adopted. The defoliation rate of the pasture site close to feces was 40% lower than at that distant from feces. This response pattern was similar to defoliation intensity of leaf blade. The leaf blade of the tiller close to feces also achieved... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria decumbens; Grazing; Sward structure; Tiller. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400010 |
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| HIRATA, Masahiro; FUJITA, Haruhiro; ISHIDA, Jyoken; KITAGAWA, Masayuki; MIYAZAKI, Akira; 平田, 昌弘; 藤田, 晴啓; 石田, 定顕; 北川, 政幸; 宮崎, 昭. |
| http://www.jaals.net/学会誌バックナンバー-投稿規定/ |
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Palavras-chave: Historical change; Grazing; Arabian pastoralist; Motorization; Syria. |
| Ano: 1999 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3266 |
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| Emeline, Creis Bendelac; Ludovic, Delage; Laurent, Vallet; Catherine, Leblanc; Kruse, Inken; Erwan, Ar Gall; Florian, Weinberger; Philippe, Potin. |
| Mechanisms related to the induction of phlorotannin biosynthesis in marine brown algae remain poorly known. Several studies undertaken on fucoid species have shown that phlorotannins accumulate in the algae for several days or weeks after being exposed to grazing, and this is measured by direct quantification of soluble phenolic compounds. In order to investigate earlier inducible responses involved in phlorotannin metabolism, Fucus vesiculosus was studied between 6 and 72 h of grazing by the sea snail Littorina littorea. In this study, the quantification of soluble phenolic compounds was complemented by a Quantitative real-time PCR (qRT-PCR) approach applied on genes that are potentially involved in either the phlorotannin metabolism or stress responses.... |
| Tipo: Text |
Palavras-chave: Phlorotannins; Inducible defense; Gene expression; Grazing; Fucus vesiculosus. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00688/79981/82940.pdf |
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| Registros recuperados: 129 | |
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