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Accumulation and export of nutrients in cactus pear cladodes (Opuntia ficus-indica) under different managements in the Brazilian Semiarid. Repositório Alice
LOPES, M. N.; CÂNDIDO, M. J. D.; SILVEIRA, W. M.; MARANHÃO, T. D.; SOARES, I.; POMPEU, R. C. F. F.; SILVA, R. G. da; CARNEIRO, M. S. de S..
Abstract: The present study evaluated the accumulation and export of nutrients in cactus pear (Opuntia ficus-indica) cv. Gigante, fertilized with combinations of nitrogen (10, 70, 100, 130, and 190 kg ha -1 year -1 N) and phosphorus (10, 70, 100, 130, and 190 kg ha -1 year -1 P2O5) under annual and biennial harvests, in Quixadá and Tejuçuoca, using a split-plot randomized block design with four replications. In Quixadá, under annual and biennial harvests, the following orders of accumulation of macronutrients (in kg ha -1 year -1) were found, respectively: K (98.8) > Ca (87.2) > N (46.7) > Mg (26.8) > S (18.4) > P (2.04) and Ca (33.5) > K (31.1) > S (18.6) > N (12.9) > Mg (10.5) > P (0.81). In Tejuçuoca, under annual and...
Tipo: Artigo de periódico Palavras-chave: Harvest frequency; Fertilization; Nutritional demand; Acúmulo de macronutriente; Palma Forrageira; Nutrição Vegetal; Nutriente; Crescimento; Macroelemento; Exigência Nutricional; Plant nutrition; Plant micronutrients; Nutrient requirements.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1094339
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Applying precision feeding techniques in growing-finishing pig operations R. Bras. Zootec.
Pomar,Cândido; Hauschild,Luciano; Zhang,Guo-Hua; Pomar,Jesus; Lovatto,Paolo Alberto.
The high cost of feed ingredients, the use of non-renewable sources of phosphate and the dramatic increase in the environmental load resulting from the excessive land application of manure are major challenges for the livestock industry. Precision feeding is proposed as an essential approach to improve the utilization of dietary nitrogen, phosphorus and other nutrients and thus reduce feeding costs and nutrient excretion. Precision feeding requires accurate knowledge of the nutritional value of feedstuffs and animal nutrient requirements, the formulation of diets in accordance with environmental constraints, and the gradual adjustment of the dietary nutrient supply to match the requirements of the animals. After the nutritional potential of feed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal variability; Diet formulation; Nutrient excretion; Nutrient requirements; Production cost.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001300023
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Consumo e balanço de minerais em dietas de caprinos no sertão do Rio Grande do Norte. Repositório Alice
COSTA, B. M..
Esse trabalho foi realizado com base em dois experimentos, onde objetivou-se quantificar e avaliar a contaminação mineral proveniente da saliva na extrusa de caprinos no período seco, transição e chuvoso. Os períodos de coletadas de dados se deram em novembro de 2014 a abril de 2015. Os minerais avaliados foram: Sódio (Na), Fósforo (P), Potássio (K), Cálcio (Ca), Magnésio (Mg), Enxofre (S), Ferro (Fe), Manganês (Mn), Zinco (Zn), Cobre (Cu), Selênio (Se), Cromo (Cr), Molibdênio (Mo) e Cobalto (Co). Foram coletadas extrusas de animais fistulados no rúmen. Em cada período, foi realizado o esvaziamento do rúmen e fornecido o pasto nativo, com parte já separada para análises e por meio da diferença se obteve a contaminação (%). O delineamento experimental...
Tipo: Teses Palavras-chave: Periods; Brasil; Semiárido; Caprino; Forragem; Nutrição Animal; Caatinga; Exigência Nutricional; Contaminação; Suplemento Mineral; Pastagem Nativa; Goats; Animal nutrition; Feed contamination; Rangelands; Nutrient requirements; Brazil; Semiarid soils.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114871
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Phosphorus requirements of Azolla microphylla International Rice Research Institute
Arora, A.; Saxena, S..
p.25-26
Palavras-chave: Aquatic plants; Growth; Nutrient requirements; Phosphorus; Azolla microphylla.
Ano: 2005 URL: http://hdl.handle.net/123456789/1155
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Predicting post-absorptive protein and amino acid metabolism R. Bras. Zootec.
Hanigan,Mark D.; White,Robin R.; Apelo,Sebastian I. Arriola; Aguilar,Michelle; Estes,Kari A.; Myers,Adelyn.
ABSTRACT Sustainable production of adequate quantities of food to support a growing human population is a worldwide goal. Under current feeding conditions in the United States, dairy cattle convert dietary nitrogen to milk nitrogen with 25% efficiency. The remaining 75% is excreted, which contributes to air and water quality problems and reduces economic performance of the industry. Efficiency could be improved to 29% if protein was given to just meet current NRC requirements. Additional improvements may be achievable, but only with improved knowledge of amino acid (AA) requirements. The current metabolizable protein requirement model overestimates true requirements due to lack of knowledge of AA supply and requirements and to intrinsic limitations in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amino acids; Lactation; Metabolizable protein; Milk urea nitrogen; Nutrient requirements.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100614
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Protein requirement for Trichogaster lalius, blue variety R. Bras. Zootec.
Zuanon,Jener Alexandre Sampaio; Carneiro,Antonio Policarpo Souza; Nascimento,Lidiane da Silva; Silva,Donizete Aparecido da; Pontes,Marcelo Duarte; Kanashiro,Márcio Yoshiyuki; Salaro,Ana Lúcia.
The objective of the present study was to evaluate the protein requirement of juvenile Trichogaster lalius, blue variety. The experimental design was of randomised blocks (B1 = initial weight of 1.04±0.05 g and B2 = 1.36±0.02 g), with two replicates within each block and five treatments (230, 270, 310, 350 and 390 g CP/kg diet). The fish were fed to satiation, three times a day for 90 days. The study evaluated: survival rate, weight gain, final length, feed intake, feed conversion ratio, protein efficiency ratio, specific growth rate and condition factor. There was a linear effect of dietary protein levels for protein efficiency ratio, specific growth rate (positive linear effect) and feed conversion ratio (negative linear effect). For weight gain, final...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dwarf gourami; Growth performance; Nutrient requirements; Ornamental fish.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000200010
Registros recuperados: 6
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