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| Registros recuperados: 57 | |
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| Romero Pérez, Atmir. |
| El selenito de sodio, el suplemento de selenio mas usado en rumiantes en la prevención de la deficiencia del elemento y las enfermedades resultantes, fue encapsulado por nanoprecipitación y emulsión-evaporación en nanopartículas poliméricas. Fue evaluado el efecto del método de preparación de nanoparticulas, proporciones de polímeros (Eudragit RL 100 y RS 100) y solvente empleado (etanol y acetona), sobre las características fisicoquímicas (potencial z, índice de polidispersidad y porcentaje de encapsulación) y la morfología (tamaño de partícula y forma) de las nanopartículas. El tamaño de partícula obtenido presentó valores de 34.64 a 213.86 nm. Tanto el tamaño como el potencial z y el PDI se incrementaron (P < 0.05) cuando se utilizó el... |
| Tipo: Tesis |
Palavras-chave: Nanopartículas; Selenito de sodio; Eudragit; Rumiantes; Maestría; Ganadería; Nanoparticles; Sodium selenite; Eudragit; Ruminants. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1515 |
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| Ramírez Hernández, Irma Fabiola. |
| Las emisiones de metano (CH4) de las actividades ganaderas, como un gas de efecto invernadero, son estimadas para el desarrollo de inventarios. Sin embargo el aprovechamiento de la producción del CH4 a partir de excretas de animales rumiantes y no rumiantes, para la generación de energía, requiere de establecer condiciones de temperatura y humedad para eficientar la mayor producción de este gas, compuesto del biogás producido por la actividad microbiana. En este estudio, se desarrollaron cuatro experimentos para cuantificar la producción de CH4, con la fermentación controlada, en un sistema biorreactor-trampa. En el 1er experimento, se compararon diferentes excretas de animales rumiantes: estiércol de ganado lechero y en engorda, excretas de cabras y... |
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Palavras-chave: Biogás; Metano; Excretas; Rumiantes; Fermentación; Biogas; Metane; Manure; Ruminants; Fermentation; Doctorado; Hidrociencias. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/282 |
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| VOLPI, D.; ALVES, F. V.; SARAIVA, E. F.; VIGAS, V. P.; ARGUELHO, A. da S.; ZOPOLLATTO, M.; ALMEIDA, R. G. de. |
| A observação visual do comportamento ingestivo em ruminantes, principalmente naqueles mantidos em pastagens, apesar de comumente utilizada com diferentes finalidades de estudo, é trabalhosa, pouca precisa e empenha grande quantidade de mão-de-obra. Com o avanço da tecnologia em geral, outras metodologias, que fazem uso de sensores mecânicos, ópticos e sonoros, mostram grande potencial de uso em ruminantes. A bioacústica, em particular, adequa-se em experimentos que necessitam tanto de macro quanto de microatividades, otimizando mão-de-obra e com custo relativamente baixo em comparação à outras metodologias automatizadas. Entretanto, por ser um campo de estudo recente na produção animal, as operações de captura e análise dos sons ainda precisam ser... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Acústica; Pecuária de precisão; Som; Feeding; Well-being; Precision livestock; Comportamento Animal; Gado Nelore; Nutrição Animal; Pastejo; Pecuária; Ruminante; Alimentação; Bem-Estar; Acoustics; Animal well-being; Grazing; Ruminants; Sounds. |
| Ano: 2018 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1102352 |
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| DP,Alves; MB,Carneiro; IVF,Martins; CC,Bernardo; DM,Donatele; Pereira Júnior OS,; BR,Almeida; BR,Avelar; AGC,Leão. |
| Fasciolosis is a disease that affects the liver parenchyma and bile ducts of numerous animals, including humans, which causes economic losses and threatens public health. The present work aimed at reporting the distribution and factors connected with Fasciola hepatica infection in cattle in ten municipalities in southern Espírito Santo, Brazil, between 2008 and 2009. During this period, 50 rural properties in ten cities were analyzed and fecal samples from 10% of the cattle on each farm were collected. Of the 717 samples analyzed, 154 (21.33%) presented Fasciola hepatica eggs. As for the 50 rural properties studied, 32 (64%) had animals positive for fasciolosis. Throughout the evaluation, it was observed that 42 (84%) rural properties had flooded areas, 33... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fasciolosis; Epidemiology; Ruminants. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000300006 |
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| Oliveira,Brena Santos; Pereira,Luiz Gustavo Ribeiro; Azevêdo,José Augusto Gomes; Rodrigues,José Avelino Santos; Velasco,Frederico Osório; Neves,André Luiz Alves; Maurício,Rogério Martins; Verneque,Rui da Silva; Santos,Rafael Dantas dos. |
| Abstract: The objective of this work was to evaluate the silage quality, fermentation profile, intake, and digestibility of six sorghum cultivars for sheep feeding. 'SF 15', 'IPA 2502', 'BRS 655', 'BR 601', 'BRS 506', and 'Sudão' were cultivated in randomized complete block designs with five replicates, harvested, and ensiled when plants reached the soft-dough grain stage. Silage quality was determined in laboratory silos. Intake and apparent digestibility were determined during 22 days, using 24 Santa Inês lambs (35.5±2.21 kg) randomly distributed in the treatments. Silage from 'IPA 2502' had the lowest contents of dry matter, neutral detergent fiber, and acid detergent fiber; the highest nonfibrous carbohydrate and total digestible nutrient contents; and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sorghum; Digestibility; Fermentation profile; Nutritional value; Ruminants; Semiarid conditions. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000200256 |
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| Rodrigues,João Paulo Pacheco; Lima,Jéssika Carolina Moutinho; Castro,Marcelo Messias Duarte; Valadares Filho,Sebastião de Campos; Chizzotti,Mario Luiz; Campos,Mariana Magalhães; Machado,Fernanda Samarini; Marcondes,Marcos Inácio. |
| Abstract: The objective of this work was to quantify the net requirements for the maintenance (NRm) and growth (NRg), as well as the retention coefficient (RC) of calcium, phosphorus, sodium, potassium and magnesium, of Holstein calves. The NRm were 87.8, 20.8, 4.36, 2.21, and 1.01 mg kg-1 of empty body weight for Ca, P, Na, K, and Mg, respectively. The RC was 0.882, 0.473, 0.274, 0.088, and 0.052 for Ca, P, Na, K, and Mg respectively. The requirements of Ca and P of Holstein calves are higher than those estimated for adult animals. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mineral nutrition; Nutrient requirement; Ruminants. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400522 |
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| Costa,Emellinne Ingrid de Sousa; Carvalho,Gleidson Giordano Pinto de; Pires,Aureliano José Vieira; Dias,Carina Anunciação dos Santos; Cerutti,Weiler Giacomazza; Oliveira,Ronaldo Lopes; Barbosa,Analívia Martins; Maranhão,Camila Maida de Albuquerque. |
| This experiment was conducted to study the substitution of soybean meal with peanut cake in the supplement by assessing the feeding behavior and the interaction between the thermal environment and the physiological responses of eight crossbred cows with an average live weight of 500 kg. Cows were divided into two 4 × 4 Latin squares and managed on pasture. The peanut cake was included at the levels of 0, 330, 660, and 1,000 g kg-1 in the supplement as a replacement for soybean meal. The feeding behavior variables were not affected by the levels of peanut cake. No differences were found for the physiological parameters of the animals with the replacement of soybean meal for peanut cake in the supplements. Peanut cake can replace up to 100% soybean meal in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiesel; Idleness; Pasture; Respiratory rate; Ruminants. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000400138 |
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| Chaudhry,Abdul Shakoor. |
| Forages are essential for the successful operation of animal production systems. This is more relevant to ruminants which are heavily dependant upon forages for their health and production in a cost-effective and sustainable manner. While forages are an economical source of nutrients for animal production, they also help conserve the soil integrity, water supply and air quality. Although the role of these forages for animal production could vary depending upon the regional preferences for the animal and forage species, climate and resources, their importance in the success of ruminant production is acknowledged. However with the increasing global human population and urbanisation, the sustainability of forage based animal production systems is sometimes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal Production Systems; Forages; Ruminants; Sustainable. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008001300010 |
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| Menezes,Gustavo Chamon de Castro; Valadares Filho,Sebastião de Campos; Magalhães,Felipe Antunes; Valadares,Rilene Ferreira Diniz; Mariz,Lays Débora; Detmann,Edenio; Pereira,Odilon Gomes; Leão,Maria Ignez. |
| It was evaluated intake, rumen and intestinal digestibility and passage and digestion rates in bovines fed diets constituted of corn silage, crushed sugar cane and given fresh, crushed sugar cane and given after 72 hours of storage, ensiled sugar cane with 1% of calcium oxide and with no treatment and a same concentrate fixed at 1% of body weight. All roughage was corrected to contain 10% of crude protein. It was used five rumen-fistulated bovine with average weight of 240 ± 15 kg, distributed in a 5 × 5 Latin square. Abomasum and total fecal collection and two rumen evacuations were carried out in the morning. Animals fed corn silage based diet presented greater rumen digestibility of the protein and intestinal digestibility of the ether extract, greater... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestion; Dry matter; Intake; NDF; Passage rate; Ruminants. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500023 |
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| Silva,Jonilson Araújo da; Ítavo,Camila Celeste Brandão Ferreira; Ítavo,Luís Carlos Vinhas; Morais,Maria da Graça; Franco,Gumercindo Loriano; Zeoula,Lucia Maria; Heimbach,Natália da Silva. |
| The present study tested brown propolis in crude or extract form as a feed supplement for feedlot lambs to identify the type that most improves in vivo nutrient digestibility. Digestibility was assessed by both total fecal collection and internal markers and the results obtained by these techniques were compared. The completely randomized design was used to compare feed intake and nutrient digestibility of 24 male lambs aged seven months among four dietary treatments (crude brown propolis, propolis ethanol extract, monensin sodium, and control). Methods of feces collection were compared using a completely randomized split-plot design, with experimental diets corresponding to the main factor and the methods to estimate fecal production as the sub-factor.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flavonoids; Monensin; Ruminants. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000700376 |
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| Lima,Ana Rebeca Castro; Fernandes,Marcia Helena Machado da Rocha; Teixeira,Izabelle Auxiliadora Molina de Almeida; Frighetto,Rosa Toyoko Shiraishi; Bompadre,Thiago Francisco Ventoso; Biagioli,Bruno; Meister,Naomi Cristina; Resende,Kléber Tomás de. |
| ABSTRACT This study was carried out to to evaluate how feed restriction and different forage:concentrate ratios affect digestibility, methane emission (using the SF6 technique), and energy utilization of Anglo-Nubian goats. Fifteen (15) dry and non-pregnant Anglo Nubian goats, averaging 30±2.9 kg body weight, were used. The experiment was divided into two trials, the first of which was designed to study the effects of feed restriction (0% or ad libitum; 15% of feed restriction or equivalent to 85% of ad libitum intake; and 40% of feed restriction or equivalent to 60% of ad libitum intake) and the second, to study the effects of forage:concentrate (F:C) ratios (75:25, 54:46, and 25:75) in the diet. The sulfur hexafluoride (SF6) tracer gas method was used to... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Greenhouse gases; Ruminants; SF6. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001200781 |
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| Agy,Mariza Sufiana Faharodine Aly; Oliveira,Ronaldo Lopes; Ribeiro,Claudio Vaz Di Mambro; Ribeiro,Marinaldo Divino; Bagaldo,Adriana Regina; Araújo,Gherman Garcia Leal de; Pinto,Luís Fernando Batista; Ribeiro,Rebeca Dantas Xavier. |
| The intake of the dry matter (DM), the crude protein (CP) and the metabolizable energy intake (ME) in megacalories per day (Mcal/day) were not affected by the diets. In contrast, the intake of neutral detergent fiber (NDF), in g/kg BW, increased linearly. An increasing linear effect was also observed for the ether extract (EE) intake, whereas a decreasing linear performance was observed for the non-fibrous carbohydrate (NFC) intake. The digestibility of DM, organic matter and NFC decreased linearly with the sunflower cake inclusion, whereas the digestibility of CP, NDF, and EE were not influenced by the diets. No effect was observed for the concentration of serum glucose or urea nitrogen serum. No effect was observed on the urea nitrogen serum in the hours... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Byproducts; Digestibility; Intake; Performance; Ruminants. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000100019 |
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| Registros recuperados: 57 | |
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