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| Registros recuperados: 129 | |
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| Dias, Daniel Lucas Santos; Universidade Estadual do Sudoeste da Bahia; Silva, Robério Rodrigues; Universidade Estadual do Sudoeste da Bahia; Silva, Fabiano Fereira da; Universidade Estadual do Sudoeste da Bahia; Carvalho, Gleidson Giordano Pinto de; Universidade Federal da Bahia; Barroso, Daniele Soares; Universidade Estadual do Sudoeste da Bahia; Carvalho, Venicio Macedo; Universidade Estadual do Sudoeste da Bahia. |
| The objective of this study was to evaluate the correlations existing between nutrient intake and ingestive behavior of crossbred steers in the post-weaning phase on Brachiaria brizantha cv. Marandu, during the rainy period. Twenty-two steers were distributed into a completely randomized design, with two types of supplement and eleven replications, managed under rotational grazing, in a 6.5 ha area. Pearson’s Linear Correlation analysis was performed between the behavior variables and the performance variables values. The correlation coefficients were tested by the t test. The average daily gain (ADG) showed positive correlation with the times spent ruminating and eating at the trough and total chewing time. Positive correlation was observed between the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.05.00-4 bite; Cattle; Gain; Grazing. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21501 |
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| Campana, Ludmila Lacerda; Modesto, Elisa Cristina; Barros, Ana Carolina Carvalho de; Zanella, Pablo Gilliardi; Carvalho, Carlos Augusto Brandão de; Camargo Filho, Sérgio Traballi. |
| The ingestive behavior of crossbred heifers grazing on stargrass pasture was managed at two levels of light interception and two levels of post-grazing residual height. The experiment was conducted at Pesagro (Seropédica, Rio de Janeiro State) between April 2012 and January 2013. The grazing (GT), rumination (RT) and idling (IT) times were evaluated every 10 minutes throughout a 24-hour period. Forage samples were collected for the analysis of chemical composition and for leaf:stem ratio determination. Dry bulb, wet bulb and black globe temperatures were evaluated every hour along with the relative humidity, during grazing to characterize the environment and calculate the Black Globe Humidity Index (BGHI). The mean grazing time (6 hours) was inversely... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: BGHI; Cynodon nlemfuensis; Grazing; Idling; Morphological composition; Rumination. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24787 |
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| Piazzetta, Hugo von Linsingen; UFPR; Monteiro, Alda Lúcia Gomes; UFPR; Ribeiro, Ticiany Maria Dias; UNESP-Botucatu; Carvalho, Paulo Cesar de Faccio; UFRGS; Dittrich, João Ricardo; UFPR; Silva, Claudio José Araujo da; UFPR. |
| Este trabalho objetivou avaliar o comportamento ingestivo e o consumo de forragem de cordeiros em sistemas de terminação a pasto. Os tratamentos foram: cordeiros mantidos junto às ovelhas em pastagem de azevém sem suplementação; cordeiros mantidos junto às ovelhas na mesma pastagem, suplementados em creep feeding; cordeiros mantidos junto às ovelhas na mesma pastagem, suplementados em creep grazing com trevo branco. Foram realizadas três avaliações do comportamento ingestivo, verificando-se as atividades realizadas pelos animais (pastejo, ruminação, amamentação e outras atividades). Houve diferença (p < 0,05) no tempo destinado ao pastejo, à ruminação e a outras atividades, e os cordeiros não-suplementados tiveram maiores tempos de pastejo e ruminação e... |
| Tipo: Pesquisa de campo |
Palavras-chave: 5.04.03.00-1 amamentação; Creep feeding; Creep grazing; Ovinos; Pastejo; Ruminação Nutrição e Alimentação Animal creep feeding; Creep grazing; Grazing; Ruminating; Sheep; Suckling. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/5345 |
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| Teixeira, Fábio Andrade; UESB; Bonomo, Paulo; UESB; Pires, Aureliano José Vieira; UESB; Silva, Fabiano Ferreira; UESB; Martins, Giselle Caroline Fernandes; UESB; Cardoso, Elisângela Oliveira; UESB. |
| O objetivo deste trabalho foi avaliar as características estruturais de pastos de Brachiaria decumbens diferidos por 140 dias, visando determinar a estratégia mais adequada de adubação nitrogenada. Foram estudadas quatro estratégias de adubação no início e no final do verão (0-0, 100-0, 50-50, 0-100 kg ha-1 de N), respectivamente, com quatro repetições. Para avaliação das densidades volumétricas, a forragem foi colhida em três estratos: estrato A- acima de 40 cm; B- 20-40 cm; e C- 0-20 cm do solo. O índice de tombamento foi menor (p < 0,05) para a estratégia de adubação com 100 kg ha-1 de N aplicados no final do verão. No estrato B foram observadas maiores (p < 0,05) densidades de forragem total, de lâmina foliar e de colmo verde para estratégia de... |
| Tipo: Pesquisa de campo |
Palavras-chave: Forragicultura e pastagens acamamento; Densidade; Diferimento; Pastagem; Perfilho; Ureia falling; Density; Deferment; Grazing; Tiller; Urea. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10212 |
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| Valente, Eriton Egidio Lisboa; Universidade Estadual do Oeste do Paraná; Paulino, Mário Fonseca; Universidade Federal de Viçosa; Detmann, Edenio; Universidade Federal de Viçosa; Valadares Filho, Sebastião de Campos; Universidade Federal de Viçosa; Cardenas, Javier Enrique Garces; Universidade Federal de Viçosa; Dias, Isabela Fernanda Teixeira; Universidade Federal de Viçosa. |
| Protein and energy requirements of beef cattle, aged between 4 and 18 months old, on tropical pastures, were estimated. Forty-six Nellore calves (138.3 ± 3.4 kg BW and 90-150 days old), kept on pasture, were distributed in a maintenance group (restricted feeding) or in nutritional plans, receiving a supplements with different amounts of protein and carbohydrate or non-supplemented. The net energy requirement for weight gain (NEg) was obtained by linear regression of logarithm of retained energy as a function of logarithm of empty body weight gain. The net energy requirement for maintenance (NEm) was estimated by the exponential relation between heat production and metabolizable energy intake. Net protein requirement for weight gain (RP) was estimated by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.03.01-0 grazing; Nellore; Supplementation Beef cattle; Grazing; Nellore; Supplementation. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21143 |
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| Teixeira, Fábio Andrade; Universidade Estadual do Sudoeste da Bahia; Bonomo, Paulo; Universidade Estadual do Sudoeste da Bahia; Pires, Aureliano José Vieira; Universidade Estadual do Sudoeste da Bahia; Silva, Fabiano Ferreira; Universidade Estadual do Sudoeste da Bahia; Abreu Filho, George; Universidade Estadual do Sudoeste da Bahia; Viana, Pablo Teixeira; Universidade Estadual do Sudoeste da Bahia. |
| The objective of this work was to evaluate the tiller population density in Urochroa decumbens pasture deferred for 95 and 140 days, aiming to determine the best strategy for nitrogen fertilization. Four fertilization strategies at the beginning and end of summer (0-0, 100-0, 50-50, 0-100 kg ha-1 of N) were studied, respectively, with four repetitions. For the pastures deferred for 95 days, the population densities of vegetative tillers were greater (p < 0.05) for the strategy 0-100. At the end of the deferment period, the weight of the vegetative tillers per hectare was greater for the strategy 0-100, followed by the strategy 50-50. The densities of vegetative tillers, evaluated in the pastures deferred for 140 days, were greater (p < 0.05)... |
| Tipo: Pesquisa de campo |
Palavras-chave: Density; Deferment; Grazing; Tiller; Urea. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10243 |
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| Soares Filho, Cecilio Viega; Cecato, Ulysses; Ribeiro, Ossival Lolato; Roma, Claudio Fabrício da Cruz; Beloni, Tatiane. |
| The morphogenetic and structural characteristics, coupled to forage production of Tanzania grass with nitrogen (N) doses during the seasons of the year, at intermittent grazing, were analyzed. The experimental design consisted of a totally randomized block with split plots and four replications. The plots comprised 0, 150, 300 and 450 kg ha-1 N levels, whereas the sub-plots were the seasons. Urea was applied three times on the pasture and had a positive effect on the rates of leaf elongation and emergence and on the number of live leaves of Tanzania grass in the spring and summer. High nitrogen fertilization associated with shorter grazing intervals triggered a higher percentage of leaf blades in the management of Tanzania grass under rotational stocking... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.04.00-8 Panicum maximum; Grazing; Leaf appearance rate; Leaf elongation rate; Urea. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/27101 |
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| Santos, Manoel Eduardo Rozalino; Universidade Federal de Uberlandia; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Silva, Guilherme Porte; Universidade Federal de Viçosa; Braz, Thiago Gomes dos Santos; Universidade Federal de Viçosa; Gomes, Virgilio Mesquita; Universidade Federal de Viçosa; Silva, Simone Pedro da; Universidade Estadual Paulista “Júlio de Mesquita Filho". |
| The experiment was carried out to evaluate the patterns of defoliation in plants of various heights in the same pasture of Brachiaria decumbens cv. Basilisk under continuous stocking with cattle. Four plant heights were evaluated (10, 20, 30 and 40 cm) in the same managed sward, with mean height equal to 25 cm. A randomized blocks design was used, with two replications. Defoliation frequency increased linearly along with plant height in the same pasture. Defoliation intensity, number of defoliations in leaf blade and percentage of leaf blade grazed per tiller also increased linearly along with plant height. The defoliation interval decreased linearly according to plant height. The quadratic model was adequately fitted into grazing efficiency data, reaching... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.04.00-8 Brachiaria decumbens; Forage losses; Grazing; Horizontal pasture sward. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/14376 |
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| Silva, Viviane Santos da; Bronadani, Ivan Luiz; Alves Filho, Dari Celestino; Paula, Perla Cordeiro de; Martini, Ana Paula Machado; Moura, Amanda Farias de. |
| This study aimed to evaluate the effects of oat or ryegrass over seeding on the productive characteristics and morphological composition of Tifton85 grass under continuous grazing. The three studied treatments were: Oat + Tifton85, Ryegrass + Tifton85 and Tifton85, distributed in a completely randomized design, constituting four replications of area per treatment. The Ryegrass + Tifton85 treatment presented a forage mass 27% superior to the Oat + Tifton85 treatment. The leaf percentage of Tifton85 was superior for the treatment Oat + Tifton85 (41%), while the percentage of stem + sheath was superior in the treatment Ryegrass + Tifton85 (64%). There was a higher percentage of Tifton85 leaves in the treatment Oat + Tifton85, while the Ryegrass + Tifton85... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zootecnia e Recursos Pesqueiros. forage; Grazing; Oat; Ryegrass; Tropical pasture.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36363 |
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| Santos, Manoel Eduardo Rozalino; Universidade Federal de Uberlândia; Silveira, Márcia Cristina Teixeira; Empresa Brasileira de Pesquisa Agropecuária; Gomes, Virgílio Mesquita; Universidade Estadual de Montes Claros; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Sousa, Braulio Maia de Lana; Universidade Federal de Sergipe; Santos, Anselmo de Deus; Universidade Federal de Viçosa. |
| Current experiment identified the height of signal grass {Urochloa decumbens (Stapf) R. D. Webster cv. Basilisk [syn. Brachiaria decumbens Stapf cv. Basilisk]} at the beginning of deferment that provided an appropriate pasture structure and potential selectivity by cattle on deferred pastures. Four pasture heights at the beginning of deferment (10, 20, 30 and 40 cm) and two forage samples (available on pasture and simulated grazing) were studied. The experimental design was set in completely randomized blocks, with two replications, in a split-plot arrangement. Higher percentage of live leaf blades and lower percentage of live stems and senescent forage were recorded in the forage sample from simulated grazing. The increase in pasture height increased the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria decumbens; Stem; Leaf; Senescent forage; Grazing Brachiaria decumbens; Stem; Leaf; Senescent forage; Grazing. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/20421 |
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| Poli, César Henrique Espírito Candal; UFRGS; Lúcia Monteiro, Alda Gomes; UFPR; Barros, Carina Simionato de; UFPR; Dittrich, João Ricardo; UFPR; Fernandes, Sergio Rodrigo; UFPR; Carvalho, Paulo César de Faccio; UFRGS. |
| O objetivo deste estudo foi avaliar o comportamento ingestivo de cordeiros em pastagem de Tifton-85 (Cynodon spp.) em três sistemas de produção: cordeiros desmamados aos 60 dias de idade e mantidos em pastagem; cordeiros mantidos com suas mães em pastagem; e cordeiros mantidos com suas mães em pastagem e suplementados em creep feeding. O delineamento foi em blocos ao acaso com três repetições, utilizando quatro cordeiros-teste por repetição. Na pastagem, avaliou-se a altura, a massa, a composição morfológica e bromatológica da forragem. Na avaliação do comportamento ingestivo registrou-se, do nascer ao pôr do sol, o tempo despendido nas atividades de pastejo, ruminação, ócio, amamentação e alimentação no creep feeding. Avaliou-se, também, a taxa de bocados... |
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Palavras-chave: Creep feeding; Desmame; Pastejo; Ruminação; Taxa de bocado; Cynodon spp 5.04.05.01-2 creep feeding; Weaning; Grazing; Rumination; Bite rate; Cynodon spp. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/6014 |
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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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| Hisatugo,Karina F.; Mansano,Adrislaine S.; Seleghim,Mirna H.R.. |
| In aquatic ecosystems, bacteria are controlled by several organisms in the food chain, such as protozoa, that use them as food source. This study aimed to quantify the ingestion and clearance rates of bacteria by ciliates and heterotrophic nanoflagellates (HNF) in a subtropical freshwater reservoir (Monjolinho reservoir -São Carlos -Brazil) during one year period, in order to verify their importance as consumers and controllers of bacteria in two seasons, a dry/cold and a rainy/warm one. For this purpose, in situ bacterivory experiments were carried out bimonthly using fluorescently labeled bacteria with 5-(4,6 diclorotriazin-2yl) aminofluorescein (DTAF). Although ciliates have shown the highest individual ingestion and clearance rates, bacterivory was... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Bacteria; Grazing; Ciliates; Nanoflagellates; Microbial food web. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100020 |
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| Núñez,Pedro A.; Demanet,Rolando; Misselbrook,Tom H.; Alfaro,Marta; Mora,María de la Luz. |
| Chilean livestock production systems have intensified over the last years, with increasing amounts of N fertilizer inputs creating the potentiality for environmental damage through N pollution of water and air, so that alternative production strategies have been developed to reduce such environmental impacts. This study assesses N losses under different grazing frequencies and intensities on permanent pasture (Lolium perenne L., Festuca arundinacea Schreb., Dactylis glomerata L., and Trifolium repens L.) on an Andisol in Southern Chile. Four grazing strategies were evaluated: frequent-heavy (FH), frequent-light (FL), infrequent-heavy (IH), infrequent-light (IL), and a no grazing control (C) treatment, and each with three replicates in a randomized complete... |
| Tipo: Journal article |
Palavras-chave: Ammonium; Grazing; Leaching; Nitrate; NH3 volatilization. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200007 |
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| Alfaro,Marta; Salazar,Francisco; Iraira,Sergio; Teuber,Nolberto; Villarroel,Dagoberto; Ramírez,Luis. |
| In Chile there is little information on nutrient losses in livestock systems. The experiment was carried out between 2004 and 2006. Two stocking rates (3.5 and 5.0 steers ha-1) were tested under rotational grazing with Black and White Friesian steers on a permanent pasture (67.5 kg N and 40 kg P ha-1 yr-1). To quantify surface runoff losses (N, P, K), three surface lysimeters (5 x 5 m) per treatment were established. N and K leaching losses were estimated with ceramic cups. Runoff and leachate samples were individually analyzed for available and total N, reactive (RP) and total P, and K. Dissolved organic N (DON) and organic P (OP) were estimated as the difference between total and available forms. The stocking rate did not increase total N, P and K losses... |
| Tipo: Journal article |
Palavras-chave: Eutrofication; Water quality; Grazing; Andisol; Beef production. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000200004 |
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| Registros recuperados: 129 | |
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