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Registros recuperados: 17
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Canonical correlations among chemical, physical and morphological characteristics of Xaraés palisadegrass under rotational grazing Scientia Agricola
Nave,Renata La Guardia; Pedreira,Carlos Guilherme Silveira; Lima,César Gonçalves de.
In forage evaluation experiments, the assessment of adaptive and productive characteristics of genotypes is generally prioritized over qualitative responses such as nutritive value and voluntary intake. Methods that are capable of characterizing forage quality through the physical resistance to degradation have been proposed, including grinding resistance and shearing resistance. Canonical correlations establish a multivariate approach associating multiple variables depicting inter-relations studies between groups of dependent and independent variables. The objective of this research was to assess the degree of association among groups of quality-related responses of grazed Xaraés palisadegrass forage using canonical correlations among morphological,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Warner-Bratzler; Digestibility; Forage quality; Nutritive value.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000200018
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Determing Higher Fatty Acid Levels in Plant Materials NWISRL
Mayland, H.F..
The higher fatty acids (HFA) are important plant constituents that are implicated in the grass tetany hazard in livestock. A method is given whereby a technician can analyze 12 forage samples daily for HFA content. The method consists of saponifying the plant material in ethanol and KOH and extracting the subsequently acidified HFA with petroleum ether. The petroleum ether phase is evaporated and the HFA residue is dissolved in ethanol and then titrated with standardized isobutanolic KOH in the absence of Oxygen by using an Nitrogen atmosphere. A standard plant sample, analyzed over a 37-day period, had a mean of 136 mmol H+kg ± 4.5, where 0.1 mmol H+ℓ palmitic standard was determined with an accuracy of 99 ± 1.9%.
Tipo: Article Palavras-chave: Chemistry; Forage quality; Grass forage.
Ano: 1979 URL: http://eprints.nwisrl.ars.usda.gov/1442/1/436.PDF
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Diurnal variation in forage quality affects animal preference and production NWISRL
Mayland, H.F.; Shewmaker, G.E.; Fisher, D.S.; Burns, J.C..
Tipo: Conference or Workshop Item Palavras-chave: Feed preference; Time-of-day harvest difference; Animal preference; Forage quality; Mass Import - autoclassified (may be erroneous).
Ano: 2000 URL: http://eprints.nwisrl.ars.usda.gov/934/1/1007.pdf
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Diurnal variation in forage quality affects animal preference and production NWISRL
Mayland, H.F.; Shewmaker, G.E.; Fisher, D.S.; Burns, J.C..
Tipo: Conference or Workshop Item Palavras-chave: Feed preference; Time-of-day harvest difference; Animal preference; Forage quality; Mass Import - autoclassified (may be erroneous).
Ano: 2000
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Fisiologia e manejo de plantas forageiras. Infoteca-e
COSTA, N. de L.; MAGALHAES, J. A.; TOWNSEND, C. R.; PAULINO, V. T..
As pastagens representam a principal e mais barata fonte de alimentos para os ruminantes. Esta publicação reúne informações sobre o manejo e a fisiologia das pastagens. Sendo assim, apresenta os seguintes tópicos: Princípios básicos do manejo de pastagens; Aspectos morfológicos; Aspectos fisiológicos; Taxa de aparecimento foliar (TAF); Taxa de expansão foliar (TEF); Morfogênese; Carboidratos não-estruturais (CNE); Interação IAF x CNE; Práticas de manejo de pastagens; Manejo de formação; Sistemas de pastejo; Tipos de pastejo; Divisão das pastagens; Sistemas de pastejo x produção animal.
Tipo: Documentos (INFOTECA-E) Palavras-chave: Pastagem; Planta Forrageira; Manejo do Solo; Rendimento.; Fisiologia; Forage quality; Forage yield.; Physiology; Pasture management.
Ano: 2004 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/916005
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Forage quality, mineral constituents, and performance of beef yearlings grazing two crested wheatgrasses NWISRL
Vogel, K.P.; Cabrielsen, B.C.; Ward, J.K.; Anderson, B.E.; Mayland, H.F.; Masters, R.A..
Tipo: Article Palavras-chave: Chemistry; Forage quality; Mass Import - autoclassified (may be erroneous).
Ano: 1993 URL: http://eprints.nwisrl.ars.usda.gov/603/1/815.pdf
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Forage sorghum-legumes intercropping: effect on growth, yields, nutritional quality and economic returns Bragantia
Iqbal,Muhammad Aamir; Hamid,Abdul; Ahmad,Tanvir; Siddiqui,Muzammil Hussain; Hussain,Imtiaz; Ali,Sajid; Ali,Anser; Ahmad,Zahoor.
ABSTRACT Cereal-legumes intercropping is among the most economical and effective agronomic strategies to boost forage biomass production, nutritional quality and monetary returns. This review synthesizes the research findings on how intercropping affects productivity, quality, competitiveness and economic viability of sorghum-legumes mixed, row and strip intercropping systems under varied pedo-climatic conditions. Though component crops show yield reductions in row (additive and row-replacement series), mixed (seed blended crops) and strip intercropping systems, in general overall productivity per unit land area increases to a great extent. The significantly higher resource capturing with better utilization efficacy by intercrops in temporal and spatial...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Benefit-cost ratio; Economics of production; Forage quality; Land equivalent ratio; Row replacement series.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100082
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Lotus tenuis Seedling Establishment and Biomass Production in Flooding Pampa Grasslands (Buenos Aires , Argentina) Chilean J. Agric. Res.
Vignolio,Osvaldo R; Fernández,Osvaldo N.
Biomass and plant density of Lotus tenuis Waldst. & Kit. ex Willd. have been reported in decreasing in grasslands and pastures. Our objective was to determine if L. tenuis biomass and plant density can be increased in grassland through seed addition. Two separated experiments under cattle grazing exclusion were conducted in three paddocks of a Flooding Pampa grassland. The first experiment was from autumn 2004 to autumn 2006 and the second from autumn 2005 to autumn 2007. Different L. tenuis seed additions (0, 57, 229, 917 and 1833 seeds m-²) were broadcast into experimental plots. In the second experiment, besides seed additions there was a reseeding of approximately 900 seed m-² from seed rain produced by plants of grassland. Seed density...
Tipo: Journal article Palavras-chave: Legume; Forage quality; Population attributes; Seedling mortality; Seed addition.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100012
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Nitrogen Efects on Crested Wheatgrass as Related to Forage Quality Indices of Grass Tetany NWISRL
Mayland, H.F.; Grunes, D.L.; Waggoner, H.; Florence, A.; Hewes, D.A.; Joo, P.K..
Tipo: Article Palavras-chave: Chemistry; Forage quality; Mass Import - autoclassified (may be erroneous).
Ano: 1975 URL: http://eprints.nwisrl.ars.usda.gov/285/1/328.pdf
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Parent-progeny relationships and genotype X environment effects for factors associated with grass tetany and forage quality in Russian Wildrye NWISRL
Asay, Kay H.; Mayland, Henry F.; Jefferson, Paul G.; Berdahl, John D.; Karn, James F.; Waldron, Blair L..
Tipo: Article Palavras-chave: Chemistry; Forage quality; Mass Import - autoclassified (may be erroneous).
Ano: 2001 URL: http://eprints.nwisrl.ars.usda.gov/128/1/1051.pdf
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Performance and carcass characteristics of beef cattle fed with ammoniated marandugrass hay R. Bras. Zootec.
Roth,Marcella de Toledo Piza; Resende,Flávio Dutra de; Reis,Ricardo Andrade; Siqueira,Gustavo Rezende; Faria,Marcelo Henrique de; Berchielli,Telma Teresinha.
This trial was conducted aiming to evaluate the effects of Brachiaria brizantha vegetative seed harvest residues hay treated with anhydrous ammonia (NH3) or urea, and protein sources on the steers performance, and carcass quality. Twenty-four male beef cattle were (12 F1 Nellore X Aberdeen Angus and 12 F1 Nellore X Red Angus), distributed in four treatments, with six replications. Animal crossbreed type and initial body weight were considered blocks. The diets were: Untreated hay supplemented with non-protein nitrogen (UHNPN); untreated hay supplemented with cottonseed meal (UHCM), hay treated with 5% urea (HTU), hay treated with 3% anhydrous ammonia (HTA) of DM%. Diets were formulated to be isoproteic and isoenergetic. The initial body weight (kg), daily...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammoniation; Animal performance; Carcass characteristics; Chemical treatment; Forage quality; Haymaking.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000900030
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Seasonal changes in forage quality of C-3 grasses on sagebrush grasslands NWISRL
Mayland, H.F.; Shewmaker, G.E..
Tipo: Conference or Workshop Item Palavras-chave: Forage quality; Mass Import - autoclassified (may be erroneous).
Ano: 1996 URL: http://eprints.nwisrl.ars.usda.gov/939/1/950.pdf
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Seasonal changes in forage quality of C-3 grasses on sagebrush grasslands (Session 17:17-18) NWISRL
Mayland, H.F.; Shewmaker, G.E..
Tipo: Conference or Workshop Item Palavras-chave: Forage quality; Mass Import - autoclassified (may be erroneous).
Ano: 2000 URL: http://eprints.nwisrl.ars.usda.gov/925/1/1006.pdf
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Silicon in C-3 grasses: Effects on forage quality and sheep preference NWISRL
Shewmaker, Glenn E.; Mayland, H.F.; Rosenau, R.C.; Asay, K.H..
Tipo: Article Palavras-chave: Feed preference; Chemistry; Animal preference; Forage quality; Mass Import - autoclassified (may be erroneous).
Ano: 1989 URL: http://eprints.nwisrl.ars.usda.gov/510/1/673.pdf
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Use of Near Infrared Reflectance (NIR) Spectroscopy to Predict Chemical Composition of Forages in Broad-Based Calibration Models Agricultura Técnica
Garcia,Jaime; Cozzolino,Daniel.
The objective of the study was to evaluate the potential of near infrared reflectance (NIR) spectroscopy as a rapid method to predict the chemical composition of forage in broad-based calibration models. In total, 650 samples representing a wide range of chemical characteristics, phenological states and origins were scanned in an NIR instrument. The coefficient of determination in calibration (R²) and standard error in cross validation (SECV) for the NIR calibration models were as follows: dry matter 0.95 (SECV: 0.7%), crude protein 0.98 (SECV: 0.98%), ash 0.90 (SECV: 0.99%), in vitro organic matter digestibility 0.90 (SECV: 3.6%), acid detergent fiber 0.95 (SECV: 2.0%) and neutral detergent fiber 0.86 (SECV: 5.4%) on a dry matter basis. The results...
Tipo: Journal article Palavras-chave: Forage quality; NIR; Chemical composition; Near infrared analysis.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072006000100005
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Varietal differences in rate of carbohydrate accumulation for tall fescue NWISRL
Shewmaker, G.E.; Mayland, H.F.; Roberts, C.A..
Tipo: Conference or Workshop Item Palavras-chave: Forage quality.
Ano: 2008 URL: http://eprints.nwisrl.ars.usda.gov/1295/4/1272.pdf
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Water stress and forage production in Tetrachne dregei Nees, Panicum coloratum L. and Eragrostis curvula (Schrad) Nees Phyton
Ruiz,MA; Golberg,AD; Martínez,O.
Tetrachne dregei, Panicum coloratum and Eragrostis curvula are perennial forage C4 grasses, introduced from South Africa to the pampean semiarid region. This work was carried out to compare water stress tolerance; forage production and quality of T. dregei, P. coloratum and E. curvula. Studies were conducted under greenhouse and field conditions. In the greenhouse, watering was stopped after eighty one days of plant emergency in the water stress treatment. Water potential (ψ), stomatal resistance (SR) and shoot and root weights were evaluated. Under water stress, ψ diminished earlier and SR increases were higher in P. coloratum than in T. dregei and E. curvula. Plant survival in T. dregei and E. curvula was higher than that of P....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tetrachne dregei; Panicum coloratum; Eragrostis curvula; Water stress; Forage production; Forage quality.
Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572008000100002
Registros recuperados: 17
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