Consulta: subjectFacets:"Nitrogen balance"
Registros recuperados: 28
Data/hora: 10/06/2024 11:25:07

Modelo de balanço de nitrogênio para cana-de-açúcar: fase I - análise teórica e ajustes.
Provedor de dados: 14
Autores: BERGAMASCO, A. F.; SILVA, F. C. da; RODRIGUES, L. H. A.; TRIVELIN, P. C. O.
O Brasil é o maior produtor mundial de cana-de-açúcar, sendo que a queima da palha do canavial visando facilitar a colheita ainda é muito praticada. Essa prática vem sendo questionada pela alta emissão de gases, além de provocar perdas de nutrientes para as plantas, facilitar o aparecimento de ervas daninhas e erosão. As maiores limitações à produtividade da cana-de-açúcar, estão relacionados à disponibilidade de quantidades adequadas de nutrientes minerais nos solos, com destaque ao nitrogênio (N), mas, sem a queima prévia da cana, a cobertura pela palhada irá provocar mudanças no manejo da cultura e na dinâmica do N. O uso da modelagem matemática reduz a necessidade de experimentos e facilita a sistematização de conhecimentos sobre esse tema. O modelo...
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Cana-de-açúcar; Adubação nitrogenada; Balanço de nitrogênio.; Modelo Matemático; Simulação.; Mathematical models; Simulation models; Sugarcane; Nitrogen balance.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/8306

Evolution des caractéristiques chimiques et biologiques des sédiments en circuit clos. III. Bilan azoté de systèmes polytrophes
Provedor de dados: 5
Autores: Chamroux, S.; Boucher, G.
The evolution of nitrogen content in experimental closed circuit ¿and filters was followed, each tank being fed with different quantities of soluble organic matter. According to the trophic conditions, two types of metabolism could be observed : - a loss of nitrogen (denitrification), reaching almost 90% of the nitrogen in­put in eutrophic conditions, and close to 35% in mesotrophic conditions. - a gain in nitrogen (fixation), a predominant metabolism in oligotrophic and eutrophic conditions. Nitrogen retention in the sediment increases slightly with the organic matter input, but no proportionality could be established. It seems that the sediment, by its bacterial metabolisms, regulates its own organic matter rich­ness.
Tipo: Text
Palavras-chave: Circuit clos; S; Bilan azoté; Closed circuit; Sediment; Nitrogen balance.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00305/41654/40863.pdf

エネルギー摂取量の違いがめん羊の尿中プリン誘導体の分布に及ぼす影響
Provedor de dados: 19
Autores: 松岡, 栄; 上田, 博史; 藤田, 裕; Matsuoka, Sakae; Ueda, Hiroshi; Fujita, Hiroshi.
Palavras-chave: めん羊; 尿中プリン誘導体; エネルギー摂取量; 窒素出納; Sheep; Urinary purine derivatives; Energy intake-level; Nitrogen balance.
Ano: 1995
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1404

Nutritional plans on the intake, digestibility, and performance of dairy heifers of different breed compositions
Provedor de dados: 86
Autores: Oliveira Filho,Carlos Alberto Alves; Machado,Fernanda Samarini; Ferreira,Alexandre Lima; Tomich,Thierry Ribeiro; Maurício,Rogério Martins; Campos,Mariana Magalhães; Silva,Camilla Flávia Portela Gomes da; Azevêdo,José Augusto Gomes de; Pereira,Luiz Gustavo Ribeiro.
Abstract: The objective of this work was to evaluate the effects of nutritional plans and breed composition on nutrient intake and digestibility, nitrogen balance, and performance of dairy heifers in tropical conditions. Thirty-six heifers - 12 Holstein, 12 Gyr, and 12 Gyrolando F1 (½ Holstein × ½ Gyr) - were housed in a tie-stall system and randomly distributed, adopting a completely randomized design in a 3×3 factorial arrangement (nutritional plans and breed composition). The diets were formulated to enable weight gains of 200, 400, and 800 g per day, corresponding to the nutritional plans 11, 14, and 19 g kg-1 body weight (BW), respectively. The intake of dry matter, fibrous fractions (g kg-1 BW-0.75), and metabolizable energy (kcal-1 BW-0.75) in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gyr; Gyrolando; Ingestion; Nitrogen balance; Weight gain.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000200247

Nitrogen dynamic in wheat (Triticum aestivum L.) agroecosystem as influenced by intra- and interspecific competition
Provedor de dados: 87
Autores: Asadi,Sara; Aynehband,Amir; Rahnama,Afrasyab.
Abstract  Background:  The study of both intra- and interspecific competitions in Wheat (Triticum aestivum L.) agroecosystem is quite complex and it is essential to understand the influence of nitrogen in these competitions.  Objective:  The aim of this study was to evaluate the effect of different competitive models on nitrogen balance in wheat ecosystem agriculture (Chamran cultivar).  Methods:  A field experiment was performed using split-plot based on randomized complete block design (RCBD) with three replications. The main and sub-plots consisted of different nitrogen rates (control, 50, 100 and 150 kg nitrogen ha-1) and different competitive patterns (no, intraspecific, interspecific competition and intra- and interspecific in combination) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen balance; Nitrogen content; NTE; Remobilization; Weed.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100332

The WTO, Agricultural Trade Reform and the Environment: Nitrogen and Agro-chemical Indicators for the OECD
Provedor de dados: 31
Autores: Rae,   Allan N.; Strutt,   Anna.
The WTO Ministerial Statement of November 2001 mandates work on those situations where reduction of trade restrictions would benefit both trade and the environment. To contribute to such research, we use a modified version of the Global Trade Analysis Project (GTAP) model to estimate for OECD countries' changes in two environmental indicators resulting from simulated trade reforms: the impact on regional nitrogen balances, and associated changes in intensity of agro-chemical use. The trade reforms simulated lead to slightly improved nitrogen balances at the aggregate OECD level, with more ambitious trade reform resulting in a larger aggregate improvement. Most regions with a high initial per hectare nitrogen surplus are expected to experience some...
Tipo: Journal Article
Palavras-chave: Agriculture; Agro-chemicals; Nitrogen balance; General equilibrium modelling; Trade liberalisation; International Relations/Trade.
Ano: 2007
URL: http://purl.umn.edu/23933

Chemical composition and metabolizable energy values of feedstuffs for broiler chickens
Provedor de dados: 96
Autores: Silva,Eliane Aparecida da; Albino,Luiz Fernando Teixeira; Rostagno,Horacio Santiago; Ribeiro Junior,Valdir; Vieira,Rodolfo Alves; Campos,Anastácia Maria de Araújo; Messias,Rodrigo Knop Guazzi.
The objective of this study was to estimate the values of apparent metabolizable energy and apparent metabolizable energy corrected for nitrogen balance and determine the chemical composition of the following feedstuffs: babassu meal, sunflower meal, corn gluten meal, babassu starch flour, meat and bones meal, beans, millet, cookies residue, pasta residue and bread-making residue. The traditional method of excreta collection was used with broilers in the period of 14 to 24 days of age, which were distributed in a completely randomized design with eleven treatments and six replicates of six birds each. Each feedstuff replaced the reference diet at levels of 30 or 40% depending on the type of feedstuff. Chicks were housed in cages fitted with trays to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agroindustrial residues; Metabolizable energy corrected; Nitrogen balance.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300026

Nutritional evaluation of elephant-grass silages with different levels of by-products from the cashew juice industry
Provedor de dados: 96
Autores: Ferreira,Ana Cristina Holanda; Rodriguez,Norberto Mario; Neiva,José Neuman Miranda; Pimentel,Patrícia Guimarães; Gomes,Silas Primola; Campos,Warley Efrem; Lopes,Fernando César Ferraz.
ABSTRACT This study was conducted to evaluate the intake, apparent digestibility (AD), and degradability in situ of elephant grass (Pennisetum purpureum Schum) silages containing 0, 35.0, 70.0, 105.0, and 140.0 g kg-1 by-product from dried cashew apple (DCBP) (as fed basis). A completely randomized design with four replicates was adopted. For the study of degradability in situ, one adult male cattle was used in a completely randomized design with split plots. Intake and AD of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose, and cellulose were evaluated, and the digestible energy (DE) and nitrogen balance (NB) of the silages were determined. The degradability in situ of DM, CP, and NDF was also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agro-industrial waste; Digestibility; Intake; In situ degradation; Nitrogen balance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015001200434

Levels of lysine and methionine+cystine for growing New Zealand White rabbits
Provedor de dados: 96
Autores: Monteiro-Motta,Ana Carolina; Scapinello,Cláudio; Oliveira,Andréia Fróes Galuci; Figueira,Josianny Limeira; Catelan,Fernanda; Sato,Joyce; Stanquevis,Caroline Espejo.
Two experiments were carried out to evaluate, respectively, nitrogen balance (NB) and the productive performance of 31-to-50-day-old rabbits subjected to different levels of lysine and methionine+cystine (met+cys). Seventy-five animals were randomly distributed in 5 × 3 blocks (five levels of lysine: 5.5, 6.5, 7.5, 8.5 and 9.5 g/kg combined with three levels of met+cys: 5.0, 6.0 and 7.0 g/kg), with 15 treatments and five replications for the NB assay. The assay lasted 14 days: 10 days for acclimatization and four days for feces and urine collection. Increasing met+cys levels had a quadratic effect on the nitrogen excreted in urine (NU): the lowest excretion was found at the dietary level of 5.9 g/kg met+cys. Increasing lysine levels also affected NU and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Carcass; Nitrogen balance; Performance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001200005

Digestible tryptophan requirements of meat quails in the growth phase
Provedor de dados: 96
Autores: Ton,Ana Paula Silva; Furlan,Antonio Claudio; Martins,Elias Nunes; Batista,Eliany; Pasquetti,Tiago Junior; Toledo,Juliana Beatriz; Scherer,Carina; Saraiva,Lígia Melani.
The objective of this experiment was to estimate the digestible tryptophan (DTrp) requirements for growing meat quails. In the first experiment (1-14 days of age), 1,950 quails were distributed in a completely randomized design, with six levels of DTrp (0.27; 0.30; 0.33; 0.36; 0.39 and 0.42% of diet), five replications and 65 quails per experimental unit. There was a linear increase of feed intake, tryptophan intake, weight gain and body weight with the DTrp levels increase. In the second experiment (15-35 days of age), 1,350 quails were distributed in a completely randomized design, with six levels of DTrp (0.22; 0.25; 0.28; 0.31; 0.34 and 0.37% of diet), five replications and 45 quails per experimental unit. There was a linear increase for tryptophan...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body composition; Nitrogen balance; Synthetic amino acids.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500017

Digestion of feed fractions and intake of heifers fed hydrolyzed sugarcane stored for different periods
Provedor de dados: 96
Autores: Missio,Regis Luis; Oliveira,Mauro Dal Secco de; Sforcini,Mariana Paula Rossi; Rennó,Francisco Palma; Freitas Júnior,José Esler; Elejade,Denise Adelaide Gomes; Ferrari,Viviane Borba; Abud,Guilherme de Carvalho.
The objective of this study was to evaluate, in Nellore heifers, intake and digestibility of hydrolyzed sugarcane stored for different periods. The experimental design used was a 4 × 4 Latin square, four diets, four Nellore heifers with ruminal cannulas (initial body weight 285.4±23.08 kg and average initial age 14 months) and four periods of 21 days. The diets were composed by fresh sugarcane (time zero) or hydrolyzed sugarcane with addition of 0.5% of hydrated lime, stored for 24, 48 or 72 hours, as the unique forage. Intake and digestibility of feed fractions, nitrogen balance, microbial synthesis efficiency, total number of ruminal protozoans and ammoniacal nitrogen did not significantly change by storing sugarcane with addition of 0.5% of hydrated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility; Dry matter intake; Hydrated lime; Microbial protein; Nellore; Nitrogen balance.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700025

Effects of polymer-coated slow-release urea on performance, ruminal fermentation, and blood metabolites in dairy cows
Provedor de dados: 96
Autores: Calomeni,Gustavo Delfino; Gardinal,Rodrigo; Venturelli,Beatriz Conte; Freitas Júnior,José Esler de; Vendramini,Thiago Henrique Annibale; Takiya,Caio Seiti; Souza,Heraldo Namorato de; Rennó,Francisco Palma.
ABSTRACTThe objective of this experiment was to quantify the effects of feeding polymer-coated slow-release urea on nutrient intake and total tract digestion, milk yield and composition, nutrient balances, ruminal fermentation, microbial protein synthesis, and blood parameters in dairy cows. Sixteen Holstein cows (580±20 kg of live weight (mean ± standard deviation); 90 to 180 days in milk (DIM); and 28 kg/d of average milk yield) were used in a replicated 4 × 4 Latin square experimental design. The animals were assigned to each square according to milk yield and DIM. The animals were randomly allocated to receive one of the following experimental diets: 1) control (without urea addition); urea (addition of 1% on the diet DM basis); polymer-coated slow...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen balance; Nitrogen efficiency; Non-protein nitrogen.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000900327

Protein requirements for growth in male and female Saanen goats
Provedor de dados: 96
Autores: Almeida,Amélia Katiane de; Resende,Kléber Tomás de; Silva,Simone Pedro da; Soares,Diogo da Costa; Fernandes,Márcia Helena Machado da Rocha; Teixeira,Izabelle Auxiliadora Molina de Almeida.
The objective of this study was to determine the protein requirements for the growth of intact male, female, and castrated male Saanen goats weighing 30 to 45 kg of body weight (BW) and to compare estimates of the protein requirements for maintenance (NPm) by the comparative slaughter and nitrogen balance techniques. To determine the maintenance requirements, 55 goats were assigned in a split-plot design using a 3 × 3 factorial arrangement (three sexes and three dry matter intake (DMI) levels). A linear regression of retained N (as measured by the slaughter technique and estimated from the nitrogen balance) on N intake on a daily basis was used to calculate the net protein for maintenance. The net protein requirement for weight gain (NPg) was obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Comparative slaughter; Dairy; Factorial approach; Maintenance; Nitrogen balance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015001100397

Intake and digestibility of sorghum (Sorghum bicolor, L. Moench) silages with different tannin contents in sheep
Provedor de dados: 96
Autores: Teixeira,Alex de Matos; Ribeiro Junior,Gabriel de Oliveira; Velasco,Frederico Osório; Faria Júnior,Wilson Gonçalves de; Rodriguez,Norberto Mario; Santos Rodrigues,José Avelino; McAllister,Tim; Gonçalves,Lúcio Carlos.
The purpose of this study was to evaluate the voluntary intake and digestibility of three sorghum (Sorghum bicolor, L. Moench) hybrid silages in sheep. The hybrids used were H1 -BRS 655 (CMSXS 222 A × CMSXS 235 R), with tannin; H2 -(ATF54 A × CMSXS 235 R), without tannin; and H3 -BRS 610 (CMSXS 232 A × CMSXS 234 R), without tannin. The intake and digestibility of dry matter (DM), gross energy (GE), neutral detergent fiber (NDF), acid detergent fiber (ADF) and crude protein (CP) were measured. Eighteen crossbred sheep weighing 59.4 kg (±8.3) were used in the trial. A completely randomized design with three treatments (hybrids) and six repetitions (sheep) was used. There were no differences in the DM intake or apparent digestibility among the hybrids. Silage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forage preservation; Nitrogen balance; Nutritional value; Ram; Sorghum hybrid.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000100003

Soybean meal or cotton by-products associated with urea as source of nitrogen in the diet of lactating goats
Provedor de dados: 96
Autores: Alves,Aldivan Rodrigues; Medeiros,Ariosvaldo Nunes de; Oliveira,Juliana Silva de; Costa,Roberto Germano; Costa,Marcone Geraldo; Queiroga,Rita de Cássia Ramos do Egypto; Souza,Darklê Luiza de.
The objective of this study was to evaluate the influence of sources of nitrogen on the intake and digestibility of nutrients and production and chemical composition of goat milk. Soybean meal (SBM), soybean meal + urea (SBM+U), cottonseed meal + urea (CM+U), cottonseed cake + urea (CC+U) and whole cottonseed + urea (WC+U) were used, representing the different sources of nitrogen in the diet. Ten crossbred goats were used (Alpine + Saanen), weighing on average 47.90±1.94 kg of body weight at 30 days of lactation, distributed in a double Latin square (5 × 5) with five treatments and five periods. There was influence of the different sources of nitrogen on the intakes of dry matter (DM), organic matter (OM), crude protein (CP), ether extract (EE), neutral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ttonseed cake; Cottonseed meal; Milk constituents; NDFi; Nitrogen balance; Whole cottonseed.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000400006

Different true-protein sources do not modify the metabolism of crossbred Bos taurus × Bos indicus growing heifers
Provedor de dados: 96
Autores: Mota,Diego Azevedo; Messana,Juliana Duarte; Canesin,Roberta Carrilho; Fiorentini,Giovani; Pires,Alexandre Vaz; Berchielli,Telma Teresinha.
The present study was conducted to investigate the effect of alternative true-protein sources to soybean meal, with different ruminal degradability, using a sugarcane-based diet, on nutrient digestion, ruminal fermentation, efficiency of microbial protein synthesis and passage rate in prepubertal dairy heifers. Eight crossbred rumen- and duodenum-cannulated Holstein × Gyr dairy heifers (202.0±11.5 kg BW) were evaluated in a 4 × 4 Latin square experimental design with four treatments and four periods in two simultaneous replicates. Dietary treatments were: soybean meal; cottonseed meal; peanut meal; and sunflower meal. When associated with diets containing sugarcane, the different protein sources did not affect intake or digestibility of dry mater, crude...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial synthesis; Nitrogen balance; Rumen degradable protein; Sugarcane.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000200052

Feed restriction of F1 Holstein × Zebu cows in the final third of lactation modifies intake, nutrient digestibility, feeding behavior, and performance
Provedor de dados: 96
Autores: Santana,Pedro Felipe; Rocha Júnior,Vicente Ribeiro; Ruas,José Reinaldo Mendes; Monção,Flávio Pinto; Borges,Luana Alcântara; Rigueira,João Paulo Sampaio; Ramos,Joyce Cipriana Pacheco; Gomes,Virgílio Mesquita.
ABSTRACT The objective of this study was to evaluate the effect of quantitative feed restriction level on nutrient intake and digestibility, nitrogen balance, efficiency and feeding behavior, and productive performance of F1 Holstein × Zebu cows in late lactation. Sixty F1 Holstein × Zebu cows were used at the stage of late lactation (183.0±17.5 days of lactation) and with initial body weight (BW) of 499±30 kg. The experimental arrangement adopted was the completely randomized design, with five feed restriction levels (3.39, 2.75, 2.50, 2.25, and 2.00% of BW) and twelve cows as replicates for each treatment. The roughage:concentrate ratio was of 75:25 in the total dry matter of the diet. The restriction of dietary supply from 3.39 to 2.0% of BW linearly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crossbred cows; Feed efficiency; Milk production; Nitrogen balance.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100701

Nutritional performance of cattle grazing on low-quality tropical forage supplemented with nitrogenous compounds and/or starch
Provedor de dados: 96
Autores: Lazzarini,Ísis; Detmann,Edenio; Paulino,Mário Fonseca; Valadares Filho,Sebastião de Campos; Valadares,Rilene Ferreira Diniz; Oliveira,Fabrício Albani; Silva,Poliana Teixeira da; Reis,William Lima Santiago dos.
The objective of this work was to evaluate the effects of protein and/or starch supplementation on the nutritional performance of cattle grazing on low-quality tropical forage. Five crossbred steers (Holstein × Gyr) with an average body weight (BW) of 397 kg that were fitted with ruminal and abomasal cannulae were used. The animals were kept in individual signal-grass (Bracharia decumbens) paddocks. Five treatments were evaluated: 1 - control (without supplementation); 2 - supplementation with 1 g of crude protein (CP) per kg of BW; 3 - supplementation with 2.5 g of starch per kg of BW; 4 - supplementation with CP and starch as described for treatments 2 and 3; and 5 - supplementation as described for treatment 4 but replacing the corn starch with a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forage intake; Nitrogen balance; Ruminal degradation; Supplementation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900009

Nutrient metabolism and ingestive behavior of goats fed diets containing palm tree fruit
Provedor de dados: 124
Autores: Garcez,Bruno Spindola; Alves,Arnaud Azevêdo; Oliveira,Maria Elizabete de; Moreira Filho,Miguel Arcanjo; Azevêdo,Danielle Maria Machado Ribeiro; Lacerda,Marlúcia da Silva Bezerra.
ABSTRACT The objective was to evaluate the nutrient metabolism and ingestive behavior of goats fed diets containing fruits of Carnauba and Tucum palm trees, abundant in the Northeast region with fruiting in the dry season and use as alternative food for ruminants. For this end, 21 goats fed three diets, one control and two with carnauba or tucum fruits, in a completely randomized design. We determined nutrient intake through total collection of leftovers, faces and urine, as well as energy and nitrogen balance. Ingestive behavior was assessed by visual observations every 5 min for 24 h. There was a reduction in dry matter intake of 0.183 and 0.223 kg/day for diets containing tucum and carnauba fruits, respectively. The intake of digestible protein (78.04...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative food; Bactris setosa; Copernicia prunifera; Nitrogen balance; Dry matter intake.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000200413

Nutritional value of babassu cake as a replacement for roughage in sheep feed
Provedor de dados: 124
Autores: Castro,Kélvia Jácome de; Neiva,José Neuman Miranda; Borges,Iran; Miotto,Fabrícia Rocha Chaves; Gomes,Silas Primola; Pimentel,Patrícia Guimarães.
ABSTRACT The use of agro-industrial by-products in feeding ruminants has nutritional, environmental and economic advantages, and helps to sustain the production system. The aim of this study was to evaluate the nutritional value of diets containing babassu cake as a substitute for Tifton-85 hay (70, 140, 210, 280 and 350 g kg-1 dry matter: DM). Twenty-five castrated male sheep with a mean body weight of 49.6 ± 9.4 kg were used, distributed in metabolic cages in a completely randomised design. Voluntary intake was obtained from the difference between the amount of feed provided and the leftovers the following morning. To evaluate nutrient digestibility and nitrogen (N) balance, samples of urine and faeces were collected separately. There was no effect on DM...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feed; Nitrogen balance; Coefficient of digestibility; Intake; Agro-industrial by-product.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300405

Nutritive value of elephant grass silage added with cottonseed cake in diet for sheep
Provedor de dados: 124
Autores: Dias,Elyane Cristina Borges; Cândido,Magno José Duarte; Furtado,Rafael Nogueira; Pompeu,Roberto Claúdio Fernandes Franco; Silva,Leane Veras da.
ABSTRACT The objective was to evaluate the intake, nutrient digestibility and nitrogen balance in sheep fed diets containing elephant grass (Pennisetum purpureum Schum) silage containing 0; 7; 14 and 21% cottonseed cake. Twenty Morada Nova sheep were used in a completely randomized design with four treatments and five replicates. The diets were isoproteic, isoenergetic and isofibrous. There was no effect of cottonseed cake levels on nutrient intake and digestibility coefficient of ether extract. The digestibility coefficients of dry matter, organic matter, crude protein, total carbohydrates and non-fiber carbohydrates presented a linear reduction with the levels of cottonseed cake varying from, respectively, 537.97 to 421.21; 566.54 to 446.42; 595, 38 to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additive; Digestibility coefficient; Intake; Nitrogen balance.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200321

Salinomycin and virginiamycin for lactating cows supplemented on pasture
Provedor de dados: 63
Autores: Oliveira,Isis Scatolin de; Sousa,Daniel de Paula; Queiroz,Augusto Cesar de; Macedo,Bruna Gomes; Neves,Camila Garcia; Bianchi,Isabela Eloisa; Teobaldo,Ronyatta Weich.
Animals on pasture generally show higher feed efficiency as a result of the use of antibiotics. This study evaluated the effect of the antimicrobials salinomycin and/or virginiamycin on production and the ruminal parameters of supplemented dairy cows grazing on Panicum maximum cv. Tanzania. Twelve Holstein/Zebu multiparous cows were used, distributed in three Latin squares, one for the evaluation of ruminal parameters, and the others for production parameters. Cows on pasture were fed 50 % of their estimated intake with corn silage and concentrate supplements containing salinomycin, virginiamycin or a combination of additives, in doses of 120 and 150 mg kg−1, respectively. There were no differences in milk production and composition, energy and nitrogen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Panicum maximum; Digestibility; Feeding behavior; Ionophores; Nitrogen balance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000400285

Apparent digestibility of diets with combinations of soybean hulls and coastcross (Cynodon sp.) hay offered to ram lambs
Provedor de dados: 63
Autores: Araujo,Rafael Canonenco de; Pires,Alexandre Vaz; Susin,Ivanete; Urano,Fumi Shibata; Mendes,Clayton Quirino; Rodrigues,Gustavo Henrique; Packer,Irineu Umberto.
Soybean hulls (SH) are an alternative fiber source that may be used to maintain neutral detergent fiber (NDF) concentration while increasing the energy concentration of ruminant diets. The objective of this experiment was to determine the effects of replacing coastcross (Cynodon sp.) hay NDF by SH NDF on the apparent digestibility of nutrients and nitrogen balance of Santa Inês ram lambs. Twenty-four animals (42.5 ± 3.6 kg of body weight and six months old) were placed in metabolism crates and assigned in a randomized complete block design defined by body weight (BW). Experimental diets provided a similar concentration of NDF (52%) and crude protein (15%). Hay NDF from a 70% roughage-based diet was replaced with SH NDF by 33%, 67%, and 100%, resulting in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: NDF; Hair sheep; Nitrogen balance; Santa Inês; Water intake.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000600003

Performance of dairy females fed dried yeast from sugar cane
Provedor de dados: 2
Autores: Franco, Marcia de Oliveira; Marcondes, Marcos Inácio; Campos, José Maurício de Souza; Detmann, Edenio; Valadares Filho, Sebastião de Campos; Freitas, Denise Ribeiro de.
This study was performed in order to evaluate the effect of dried yeast from sugar cane when replacing soybean meal in dairy heifers’ diets. Twenty-four heifers, with an initial body weight (BW) of 178 kg, were distributed in a completely randomized design. The treatments were four levels of inclusion of dried yeast from sugar cane replacing to soybean meal (0, 33, 67 and 100% on a dry matter (DM) basis). While there was no difference in DM, neutral detergent fiber (NDF), metabolizable energy or roughage intakes, the intakes of non-fiber carbohydrates and concentrate were increased. The crude protein intake decreased according to the dried yeast from sugar cane when replacing soybean meal. The digestibility coefficients of DM and NDF showed no difference....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição de ruminantes; Avaliação de alimentos alternativos para ruminantes; Bovinocultura leiteira digestibility; Intake; Nitrogen balance; Soybean meal.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/30174

Sugar cane fresh or ensiled with or without bacterial additive in diets for dairy cows
Provedor de dados: 2
Autores: Moreira, Jeruzia Vitória; Pereira, Mara Lúcia Albuquerque; Azevedo, Saulo Tannus; Signoretti, Ricardo Dias; Siqueira, Gustavo Rezende; Pires, Aureliano José Vieira.
This study evaluated the effect of using fresh sugar cane, sugar cane silage with or without Lactobacillus buchneri, and burnt sugar cane silage with or without L. buchneri on ingestive behavior, nitrogen balance and synthesis of microbial nitrogen compounds of dairy cows. Five ¾ Holstein x Gir crossbred cows, assigned to a 5 x 5 Latin square design, were given diets with a 60:40 forage: concentrate ratio on a dry matter basis, to meet an average body weight of 550 kg and production of 15 kg of milk per day. The treatment with fresh sugar cane showed higher values (p &lt; 0.05) for dry matter feed efficiency (3,133.3 vs 2,234.47 g DM h-1) and rumination (1,642.3 vs 1,222.93 g DM h-1) compared to the silages. There was a shorter total chewing time (58.7 vs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias; Zootecnia; Nutrição Animal Lactobacillus buchneri; Microbial synthesis; Nitrogen balance; Saccharum officinarum.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22475

Nutritive value of diferents silage sorghum (Sorghum bicolor L. Moench) cultivares - doi: 10.4025/actascianimsci.v34i2.12853
Provedor de dados: 2
Autores: Borba, Luis Felipe Pereira; Universidade Federal Rural de Pernambuco; Ferreira, Marcelo de Andrade; Universidade Federal Rural de Pernambuco; Guim, Adriana; Universidade Federal Rural de Pernambuco; Tabosa, José Nildo; Instituto Agronômico de Pernambuco; Gomes, Luiz Henrique dos Santos; Universidade Federal Rural de Pernambuco; Santos, Viviany Lúcia Fernandes dos; Universidade Federal Rural de Pernambuco.
Nutrition values of silages from different sorghum cultivars are evaluated. Five 26-kg castrated crossbred lambs, housed in pens equipped with feces and urine collectors for the study of their metabolism, were employed in a 5 x 5 Latin square experimental design. Treatments consisted of silage from five different sorghum cultivars: IPA 1011 and IPA 2564 (grain sorghum), IPA 2502 (dual purpose sorghum), IPA FS-25 and IPA 467 (forage sorghum). Protein level was corrected to 12% by adding a mixture of urea: ammonium sulfate (9:1). Treatments IPA 1011, IPA 2564 and IPA 2502 provided high intake of dry matter, total carbohydrate and total digestible nutrients, and low intake of neutral detergent fiber. Cultivars IPA 1011 and IPA 2564 provided high apparent...
Palavras-chave: Nitrogen balance; Composition; Intake; Digestibility; Forage.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12853

Effect of sorghum tannins in sheep fed with high-concentrate diets
Provedor de dados: 45
Autores: Cabral Filho,S.L.S.; Abdalla,A.L.; Bueno,I.C.S.; Gobbo,S.P.; Oliveira,A.A.M.
The aim of this study was to evaluate the nutritional value of three sorghum cultivars with different concentrations of condensed tannins in sheep diets. Six adult sheep (LW=56kg) with rumen and duodenal fistulas were assigned to experimental groups using two 3x3 Latin Square designs. The diets were formulated using three sorghum cultivars: LTC (low-tannin cultivar), MTC (medium-tannin cultivar) and HTC (high-tannin cultivar). Microbial nitrogen (MN) concentration in the duodenum was measured using a 15N trace technique. LTC, MTC and HTC diets presented values of 788, 722 and 747 (SE=20.6) g kg-1 for dry matter digestibility and 633, 535 and 530 (SE=35.8) g/kg for crude protein digestibility. The LTC diet was significantly different from the other diets...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed evaluation; Microbial protein; Nitrogen balance; Rumen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600025

Ammoniated babassu palm hay in anglo-nubian goat diets
Provedor de dados: 64
Autores: Moreira,Antonia Leidiana; Alves,Arnaud Azevêdo; Moreira Filho,Miguel Arcanjo; Silva,Daniel Cézar da; Garcez,Bruno Spíndola; Vasconcelos,Vânia Rodrigues.
ABSTRACT Leaves of babassu may be used in diets for goats under maintenance, however, it is a low-quality roughage due to its high fiber content. The chemical treatment by ammonia causes reduction in the proportion of the cell wall, in addition to providing non-protein nitrogen for the microbial protein synthesis in the rumen. Babassu palm hay ammoniated with 4% urea (BHAU4%) was evaluated in this study as a substitute for guinea grass hay in the maintenance diets of goats in terms of intake, digestibility in vivo, and the partitioning of energy and nitrogen compounds. Twenty Anglo-Nubian male goats were used in a randomised block design with four treatments (diets containing 0, 33, 66, or 100% BHAU4%) and five replicates (animals/block). The chemical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility in vivo; Guinea grass; Native forage; Nitrogen balance; Orbignya phalerata Mart.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000600688