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‣ Intake, water consumption, ruminal fermentation, and stress response of beef heifers fed after different lengths of delays in the daily feed delivery time

GONZALEZ, L. A.; CORREA, L. B.; FERRET, A.; MANTECA, X.; RUIZ-DE-LA-TORRE, J. L.; CALSAMIGLIA, S.
Fonte: AMER SOC ANIMAL SCIENCE Publicador: AMER SOC ANIMAL SCIENCE
Tipo: Artigo de Revista Científica
Português
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Four rumen-fistulated Holstein heifers (134 +/- 1 kg initial BW) were used in a 4 x 4 Latin square design to determine the effects of delaying daily feed delivery time on intake, ruminal fermentation, behavior, and stress response. Each 3-wk experimental period was preceded by 1 wk in which all animals were fed at 0800 h. Feed bunks were cleaned at 0745 h and feed offered at 0800 h (T0, no delay), 0900 (T1), 1000 (T2), and 1100 (T3) from d1 to 21 with measurements taken during wk 1 and 3. Heifers were able to see each other at all times. Concentrate and barley straw were offered in separate compartments of the feed bunks, once daily and for ad libitum intake. Ruminal pH and saliva cortisol concentrations were measured at 0, 4, 8, and 12 h postfeeding on d 3 and 17 of each experimental period. Fecal glucocorticoid metabolites were measured on d 17. Increasing length of delay in daily feed delivery time resulted in a quadratic response in concentrate DMI (low in T1 and T2; P = 0.002), whereas straw DMI was greatest in T1 and T3 (cubic P = 0.03). Treatments affected the distribution of DMI within the day with a linear decrease observed between 0800 and 1200 h but a linear increase during nighttimes (2000 to 0800 h), whereas T1 and T2 had reduced DMI between 1200 and 1600 h (quadratic P = 0.04). Water consumption (L/d) was not affected but decreased linearly when expressed as liters per kilogram of DMI (P = 0.01). Meal length was greatest and eating rate slowest in T1 and T2 (quadratic P <= 0.001). Size of the first meal after feed delivery was reduced in T1 on d 1 (cubic P = 0.05) and decreased linearly on d 2 (P = 0.01) after change. Concentrate eating and drinking time (shortest in T1) and straw eating time (longest in T1) followed a cubic trend (P = 0.02). Time spent lying down was shortest and ruminating in standing position longest in T1 and T2. Delay of feeding time resulted in greater daily maximum salivary cortisol concentration (quadratic P = 0.04)...

‣ Desempenho de pintos oriundos de ovos leves e pesados alimentados com diferentes tipos de ração pré-inicial; Performance of chicks from both light and heavy eggs , feed with different kinds of prestarter diets

Santarosa, Julieta
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 11/03/2010 Português
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Dois experimentos foram conduzidos de forma semelhante, variando apenas a idade do lote de matrizes Ross que originou os ovos (42 e 60 semanas de idade, respectivamente, para os experimentos 1 e 2), com o objetivo de avaliar o desempenho de pintos oriundos de ovos leves e pesados, alimentados com dietas pré-iniciais de diferentes formas físicas e níveis nutricionais.. Foram incubados ovos apresentando peso médio de 59,0 e 70,8 g, respectivamente, para o experimento 1 (tendo originado pintos de 41,0 e 49,0g de peso médio) e 66,9 e 75,1g (tendo originado pintos de 46,2 e 52,1g de peso médio), respectivamente, para o experimento 2. Uma parte destes ovos teve o peso de seus componentes determinado. À eclosão, 288 pintos, metade de cada categoria de peso de ovo, foram distribuídos em um delineamento inteiramente casualizado, em 48 parcelas. Cada parcela alojou seis pintos, metade de cada sexo. Os tratamentos experimentais obedeceram a esquema fatorial 2x3 (2 pesos de ovos x 3 tipos de rações préiniciais). Utilizaram-se três dietas de formulação comercial na fase pré-inicial: ração peletizada, com menor nível energético (2.900 kcal/kg), protéico e de aminoácidos, considerada uma dieta de baixos níveis nutricionais (PBN); ração farelada...

‣ Caracterização química, bioquímica e físico-química da torta de mamona para seu aproveitamento na produção de material biodegradável e na alimentação animal; Chemical, biochemical and physical-chemical characterization of castor seed pulp for utilization as biodegradable material and as animal feed

Lacerda, Roseli Sengling
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 24/01/2013 Português
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Atualmente, há um grande incentivo governamental para a produção de biodiesel a partir de óleo de mamona. O aumento na fabricação desse óleo irá aumentar a produção de torta de mamona, que tem grande potencial de emprego na tecnologia de material biodegradável e utilização na alimentação animal, se destoxificada. Os objetivos desta tese foram a caracterização química da torta de mamona, a extração de suas proteínas para desenvolvimento de material biodegradável, e a caracterização do resíduo sólido do processo de extração, visando seu uso na alimentação animal. A extração das proteínas da torta de mamona foi feita por solubilização em meio alcalino. Inicialmente, diversos parâmetros (velocidade de agitação, concentração da torta na solução extratora e temperatura de extração) foram testados no intuito de aumentar o rendimento de extração das proteínas, utilizando-se NaOH (pH = 9). Em seguida, diversos experimentos foram realizados para se avaliar os efeitos do pH (8-12) e/ou do tipo de agente alcalino (NaOH, KOH e Ca(OH)2) na extração das proteínas da torta de mamona, sempre à temperatura de 50°C, velocidade de agitação de 400rpm, e concentração da torta na solução extratora de 20%. Os extratos proteicos obtidos foram liofilizados (EPL)...

‣ Estudo da produção simultânea de fitase e tanase por Paecilomyces variotii e detoxificação de resíduos agroindustriais para reuso em ração animal; Study of simultaneous production of phytase and tannase by Paecilomyces variotii and detoxification of agro-industrial residues for reuse in animal feed

José Valdo Madeira Junior
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 10/09/2010 Português
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O objetivo deste trabalho foi avaliar a viabilidade de produzir simultaneamente fitase e tanase através da fermentação sólida, em bagaço de laranja e torta de mamona, empregando o fungo Paecilomyces variotii. A produção mundial de laranja tem aumentado significativamente desde a década de oitenta, especialmente no setor de processamento de suco. Para o ano de 2010 a produção mundial de laranja está estimada em 66,4 milhões de toneladas, sendo que 40% desta produção serão convertidas em subprodutos, principalmente a casca. Uma das alternativas para o uso deste resíduo tem sido na forma peletizada para alimentação animal. A mamona é uma oleaginosa muito estudada para a produção de biodiesel. A torta residual da extração do óleo é de grande utilidade para adubação e também rica em proteínas, abrindo possibilidade da sua utilização como ração animal. Esta segunda aplicação enfrenta o problema da presença da ricina, composto tóxico presente na torta, havendo a necessidade de detoxificá-la antes do destino como ração. O uso de enzimas na alimentação animal é conhecido e está sendo bem explorado. A maior dificuldade de expandir o uso de enzimas ainda é o custo de produção. Uma alternativa para isto seria a utilização destes resíduos como substrato da fermentação para produção de enzimas. Dessa forma...

‣ North American Rendering: processing high quality protein and fats for feed

Meeker,David L.
Fonte: Sociedade Brasileira de Zootecnia Publicador: Sociedade Brasileira de Zootecnia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/07/2009 Português
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One third to one half of each animal produced for meat, milk, eggs, and fiber is not consumed by humans. These raw materials are subjected to rendering processes resulting in many useful products. Meat and bone meal, meat meal, poultry meal, hydrolyzed feather meal, blood meal, fish meal, and animal fats are the primary products resulting from the rendering process. The most important and valuable use for these animal by-products is as feed ingredients for livestock, poultry, aquaculture, and companion animals. There are volumes of scientific references validating the nutritional qualities of these products, and there are no scientific reasons for altering the practice of feeding rendered products to animals. Government agencies regulate the processing of food and feed, and the rendering industry is scrutinized often. In addition, industry programs include good manufacturing practices, HACCP, Codes of Practice, and third-party certification. The rendering industry clearly understands its role in the safe and nutritious production of animal feed ingredients and has done it very effectively for over 100 years. The availability of rendered products for animal feeds in the future depends on regulation and the market. Regulatory agencies will determine whether certain raw materials can be used for animal feed. The National Renderers Association (NRA) supports the use of science as the basis for regulation while aesthetics...

‣ Sensitisation to enzymes in the animal feed industry

Vanhanen, M; Tuomi, T; Tiikkainen, U; Tupasela, O; Tuomainen, A; Luukkonen, R; Nordman, H
Fonte: BMJ Group Publicador: BMJ Group
Tipo: Artigo de Revista Científica
Publicado em /02/2001 Português
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OBJECTIVES—To assess the prevalence of enzyme sensitisation in the animal feed industry.
METHODS—A cross sectional study was conducted in four animal feed factories, where several enzymes had been used in powder form for 7-9 years. Before this study, enzymes in liquid form had started to be used. Sensitisation to enzymes was examined by skin prick and radioallergosorbent (RAST) tests. Altogether 218 workers were tested; 140 people in various tasks in manufacturing, where exposure to various organic dusts and to enzymes was possible, and 78 non-exposed office workers. The workers were interviewed for work related respiratory and skin symptoms. Total dust concentrations were measured by a gravimetric method. The concentrations of protease and α-amylase were measured with catalytic methods and that of xylanase with an immunological method.
RESULTS—Ten workers (7%) were sensitised to enzymes in the exposed group of 140, whereas none were sensitised in the non-exposed group. Six of the sensitised people had respiratory symptoms at work: two of them especially in connection with exposure to enzymes. Enzyme concentrations in the air varied greatly: xylanase from less than 0.8 ng/m3 up to 16 ng/m3, α-amylase from less than 20 ng/m3 up to 200 ng/m3...

‣ Decline in lung function related to exposure and selection processes among workers in the grain processing and animal feed industry

Post, W.; Heederik, D.; Houba, R.
Fonte: BMJ Group Publicador: BMJ Group
Tipo: Artigo de Revista Científica
Publicado em /05/1998 Português
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OBJECTIVES: To follow up workers in the grain processing and animal feed industry five years after an initial survey, and to monitor exposures to organic dust and endotoxin and changes in prevalence of respiratory symptoms and lung function. METHODS: Outcome measures in the present survey were decline in lung function over five years, rapid annual decline in forced expiratory volume in one second (FEV1) above 90 ml.s-1, and loss to follow up. RESULTS: Among 140 workers included in the longitudinal analysis, annual decline in FEV1 and maximal mid- expiratory flow (MMEF) were significantly related to occupational exposure to dust and endotoxin in the grain processing and animal feed industry. Assuming a cumulative exposure over a working life of 40 years with an exposure of 5 mg.m-3, the estimated effect on the FEV1 would be a decline of 157 ml.s-1 (95% CI 13 to 300)--that is, about 4% of the group mean FEV1 and 473 ml.s-1 (95% CI 127 to 800) of the MMEF (about 12%). Workers with a dust exposure > 4 mg.m-3 or endotoxin concentrations > 20 ng.m-3 at the 1986-8 survey had significantly higher risk of rapid decline in FEV1 (odds ratio (OR) 3.3, 95% CI 1.02 to 10.3). The relations between occupational exposure and decline in lung function in this study occurred...

‣ Quantitative analysis of penicillins in porcine tissues, milk and animal feed using derivatisation with piperidine and stable isotope dilution liquid chromatography tandem mass spectrometry

van Holthoon, Frédérique; Mulder, Patrick P. J.; van Bennekom, Eric O.; Heskamp, Henri; Zuidema, Tina; van Rhijn, Hans (J.) A.
Fonte: Springer-Verlag Publicador: Springer-Verlag
Tipo: Artigo de Revista Científica
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Penicillins are used universally in both human and veterinary medicine. The European Union (EU) has established maximum residue levels (MRLs) for most ß-lactam antibiotics in milk and animal tissues and included them in the National Residue Monitoring Programs. In this study, a novel method is described for the determination and confirmation of eight penicillins in porcine tissues, milk and animal feed by liquid chromatography–tandem mass spectrometry (LC–MS/MS). To prevent degradation of penicillin residues during workup, a derivatisation procedure was developed, by which penicillins were converted to stable piperidine derivatives. Deuterated piperidine derivatives were synthesised for all relevant penicillins, enabling the use of isotope dilution for accurate quantification. Penicillin residues were derivatised in the crude extract with piperidine and isolated using solid-phase extraction. The penicillin piperidine derivatives were determined by LC–MS/MS. The method was validated at the current MRLs, which range from 25–300 µg kg−1 in muscle and kidney to 4–30 µg kg−1 in milk as well as at the target value of 100 µg kg−1 chosen for animal feed, according to the EU requirements for a quantitative confirmatory method. Accuracy ranged from 94–113% (muscle)...

‣ SUBTHERAPEUTIC USE OF ANTIBIOTICS IN ANIMAL FEED: IN LIGHT OF AN UNRESOLVED CLASH OF EXPERT PARADIGMS SHOULD WE PUNT TO THE CONSUMER IN DECADE FOUR?

Barclay, Elizabeth
Fonte: Harvard University Publicador: Harvard University
Tipo: Paper (for course/seminar/workshop)
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In the early 1970s, the seemingly banal and nondescript matter of the subtherapeutic use of antibiotics in animal feed ignited a contentious debate in policy circles. For three decades now, this issue has periodically surfaced and resubmerged, each time provoking a heated but ultimately unresolved debate regarding the appropriate FDA regulation of the issue. FDA has on several instances taken initial action to find itself quickly restrained either by Congress or by its own ambiguous feelings on the issue. Today, different branches of the Public Health Service, the CDC and the FDA, hold strongly divergent views on this issue and even the Center for Veterinary Medicine, the Division of the FDA responsible for regulating the manufacture and distribution of animal feed additives, appears to house a range of opinion.

‣ Consumo alimentar residual, digestibilidade aparente e comportamento ingestivo de touros da raça nelore; Residual feed intake, apparent digestibility and feeding behavior of nelore bulls

Menezes, Rayanne Galdino
Fonte: Universidade Federal de Goiás; Brasil; UFG; Programa de Pós-graduação em Ciência Animal (EVZ); Escola de Veterinária e Zootecnia - EVZ (RG) Publicador: Universidade Federal de Goiás; Brasil; UFG; Programa de Pós-graduação em Ciência Animal (EVZ); Escola de Veterinária e Zootecnia - EVZ (RG)
Tipo: Dissertação Formato: application/pdf
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Feed efficiency of cattle and its correlation with feeding behavior and apparent digestibility of nutrients is the objective of this work. Feed efficiency is one of the most important traits in livestock .Processes responsible for more than 25% of feed efficiency variation have not been clarified. Explain variation sources and identifying efficient animals are the most importantobjectives for the beef cattle production nowadays. An alternative tool to evaluate the feed efficiency is the residual feed intake (RFI), was developed in 1963, but only in the 90’sit started to be used to identify and select efficient animals. Feeding behavior is directly related to feed ingested quantity, which differs in efficient or inefficient animals . The feeding behavior and apparent digestibility of 120 Nellore animalswere evaluated in completely randomized design with respect to feed conversion ratio (FCR) and the three classes of residual feed intake: low, medium and high RFI. The age and initial body weight were 20 months and 397 ± 35 kg. The animals were placed in individual pens fitted with feeding troughs and dri nkers. The diet offered to the animals consisted of 23% forage and 77% concentrate. The experimental period lasted 84 days...

‣ Análise da cadeia de valor e dos custos das rações de uma agroindústria processadora de aves; Analysis of value chain and animal feed costs in a poultry processor agribusiness

Fonte: Organizações Rurais & Agroindustriais Publicador: Organizações Rurais & Agroindustriais
Tipo: Artigo de Revista Científica Formato: application/pdf
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In a competitive environment, it is not enough to simply coordinate and promote the efficiency of a company’s internal activities. It is also necessary to ensure that the activities which form part of the company’s “value chain” are organized in a competitive way. From this perspective, the objective of this article is to analyze the “value chain” of poultry production and the cost of animal feed in every phase of the Seara Alimentos S.A chain. The methodology consisted of exploratory research in a case study using a predominantly qualitative approach. The results of the study are the stages of the productive cycle and the costs of the animal feed throughout the “value chain” in a poultry agribusiness. It was concluded that estimating the production’s “value chain” and the costs of animal feed, which are relevant elements in the overall cost of poultry production, favors the search for improvements in the “chain’s” global results, particularly the promotion of partnerships and cost reduction.

‣ Environmental and Social Management System Implementation Handbook : Animal Production

International Finance Corporation
Fonte: Washington, DC Publicador: Washington, DC
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Environmental and social responsibility is becoming more and more important in todayapos;s global economy. There are thousands of environmental and social codes and standards in the world today. The codes and standards define the rules and the objectives. But the challenge is in the implementation. An environmental and social management system (ESMS) helps companies to integrate the rules and objectives into core business operations, through a set of clearly defined, repeatable processes. This Handbook is intended to be a practical guide to help companies in the animal production industry develop and implement an environmental and social management system, which should help to improve overall operations. Some people think that an environmental and social management system must be big, complicated and expensive. But that is not really true. To be effective, a management system needs to be scaled to the nature and size of the company. If a company has existing management systems for quality or health and safety...

‣ Identification and characterization of genetic markers and metabolic pathways controlling net feed efficiency in beef cattle.

Naik, Madan Bhaskar
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado
Publicado em //2008 Português
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Net feed intake or residual feed intake is the feed intake of an animal after adjustment for its average weight and weight gain while on the feed test. High net feed efficiency (NFE) animals have a low net feed intake, so the aim is to select animals that have high net feed efficiency in order to reduce the 70% expenditure for feed costs. Thus far, very few studies have been undertaken on beef cattle to identify genetic markers for NFE and to understand the molecular genetics of feed intake regulation and energy balance. Therefore, in an attempt to identify genes and metabolic pathways controlling feed efficiency in beef cattle, three different experimental approaches were taken herein: a) linkage and linkage disequilibrium quantitative trait loci (QTL) mapping for net feed intake in Lirnousin x Jersey animals, b) mitochondrial oxidative phosphorylation enzyme assays in high and low NFE cattle, and c) 2-dimensional fluorescent gel electrophoresis (DIGE) proteomics analysis of mitochondrial proteins. For the cattle QTL mapping, the results from a previous trial were utilized. In the trial, a double back-cross design was employed using two extremely divergent Bos taurus breeds [Jersey (J) dairy breed and Limousin (L) beef breed]. These breeds known to differ in many traits including carcass composition...

‣ Liquid Chromatographic Method for the Quantification of Zearalenone in Baby Food and Animal Feed: Interlaboratory Study

ARRANZ HERNANDEZ ISABEL; MISCHKE CARSTEN; STROKA JOERG; SIZOO E.; VAN EGMOND Hans; NEUGEBAUER Michael
Fonte: AOAC INTERNATIONAL Publicador: AOAC INTERNATIONAL
Tipo: Articles in Journals Formato: Printed
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An interlaboratory trial for determination of zearalenone (ZON) in baby food and animal feed was conducted. The study involved 39 participants in 16 European Union member states, as well as Turkey, Uruguay, and China, representing a cross-section of industry, and official food control and research institutes. The method is based on immunoaffinity column cleanup followed by high-performance liquid chromatography using fluorimetry (HPLC-Fl). The test portion of the sample is extracted with methanol¿water (75 + 25, v/v). The sample extract is filtered, diluted, and passed over an immunoaffinity column. ZON is eluted with methanol. The separation and determination of ZON is performed by reversed-phase HPLC-Fl with an excitation wavelength of 274 nm and an emission wavelength of 446 nm. Test portions of the samples were spiked at levels of 20 and 30 µg/kg ZON in baby food and at levels of 100 and 150 µg/kg ZON in animal feed. Mean recoveries from each participant ranged from 78 to 119% with an average value of 92% for baby food and from 51 to 122% with an average value of 74% for animal feed. Based on results for spiked samples (blind duplicates at 2 levels), as well as naturally contaminated samples (blind duplicates at 3 levels), the relative standard deviation for repeatability (RSDr) in baby food ranged from 2.8 to 9.0%. For animal feed...

‣ Validation of an Analytical Method to Determine the Content of T-2 and HT-2 Toxins in Cereals and Compound Animal Feed by Immunoaffinity Column Clena-up and GC-MS

BREIDBACH Andreas; POVILAITYTE Vitalija; MISCHKE Carsten; DONCHEVA TSANEVA Ivanka; VAN EGMOND Hans; STROKA Joerg
Fonte: OPOCE Publicador: OPOCE
Tipo: EUR - Scientific and Technical Research Reports Formato: Printed
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A method for the determination of T-2 toxin and HT-2 toxin in cereals and compound animal feed was validated by collaborative study. In short, the method is as follows: A test portion of a sample is extracted with a mixture of methanol/water (80/20, v/v). This raw extract is then diluted, filtered, and applied to an immunoaffinity column. After washing and elution with acetonitrile the eluate is evaporated to dryness. T-2 and HT-2 toxins in the dry residue are then derivatised with N-methyl-N-trimethylsilyl-trifluoroacetamid (MSTFA)/ Trimethylchlorosilane (TMCS) (99/1, v/v), injected into a gas chromatograph, and detected and quantified by mass spectrometry. 14 laboratories from 10 different countries were selected to participate in the collaborative study. They received 6 different test materials as blind duplicates. The test materials consisted of a blank cereal mix, two cereal mixes naturally contaminated at different levels, a blank compound animal feed, and two compound animal feeds naturally contaminated at different levels. Furthermore, two blank cereal mixes and two blank compound animal feeds together with specific spiking solutions were provided for recovery determination. The sum of the mass fractions of T-2 & HT-2 after spiking were 50 µg/kg in the cereal mix...

‣ Enhancing the bioconversion of winery and olive mill waste mixtures into lignocellulolytic enzymes and animal feed by Aspergillus uvarum using a packed-bed bioreactor

Salgado, José Manuel; Abrunhosa, Luís; Venâncio, Armando; Domínguez, José Manuel; Belo, Isabel
Fonte: American Chemical Society Publicador: American Chemical Society
Tipo: Artigo de Revista Científica
Publicado em 13/07/2015 Português
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Wineries and olive oil industries are dominant agro-industrial activities in southern European regions. Olive pomace, exhausted grape marc and vine shoot trimmings are lignocellulosic residues generated by these industries, which could be valued biotechnologically. In the present work these residues were used as substrate to produce cellulases and xylanases through solid-state fermentation using Aspergillus uvarum. For that, two factorial designs (32) were first planned to optimize substrate composition, temperature and initial moisture level. Subsequently, the kinectics of cellulolytic enzymes production, fungal growth and fermented solid were characterized, Finally, the process was performed in a packed-bed bioreactor. The results showed that cellulase activity improved with the optimization processes, reaching 33.56 U/g, and with the packed-bed bioreactor aeration of 0.2 L/min, reaching 38.51 U/g. The composition of fermented solids indicated their potential use for animal feed because cellulose, hemicellulose, lignin and phenolic compounds were partially degraded 28.08, 10.78, 13.3 and 28.32% respectively, crude protein was increased from 8.47% to 17.08%, and, the mineral contents meet the requirements of main livestock.

‣ Who Will Feed China in the 21st Century? Income Growth and Food Demand and Supply in China

Fukase, Emiko; Martin, Will
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Publications & Research :: Policy Research Working Paper; Publications & Research
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This paper uses resource-based cereal equivalent measures to explore the evolution of China's demand and supply for food. Although demand for food calories is probably close to its peak level in China, the ongoing dietary shift to animal-based foods, induced by income growth, is likely to impose considerable pressure on agricultural resources. Estimating the relationship between income growth and food demand with data from a wide range of countries, China's demand growth appears to have been broadly similar to the global trend. On the supply side, output of food depends strongly on the productivity growth associated with income growth and on the country's agricultural land endowment, with China appearing to be an out-performer. The analyses of income-consumption-production dynamics suggest that China's current income level falls in the range where consumption growth outstrips production growth, but that the gap is likely to begin to decline as China's population growth and dietary transition slow down. Continued agricultural productivity growth through further investment in research and development...

‣ Seleção de clones de batata-doce com potencial de utilização na alimentação humana e animal.; Selection of sweet potato clones with potential for use in human and animal feed.

Figueiredo, José Altair
Fonte: Universidade Federal dos Vales do Jequitinhonha e Mucuri Publicador: Universidade Federal dos Vales do Jequitinhonha e Mucuri
Tipo: Dissertação de Mestrado
Português
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Objetivou-se, com este trabalho, selecionar clones de batata-doce com potencial de utilização na alimentação humana e animal. O trabalho foi realizado no setor de Olericultura e nos Laboratórios de Técnicas Dietéticas e Tecnologia de Biomassa do Cerrado do Campus JK da UFVJM, em Diamantina-MG. Foram avaliados a produtividade total de raízes, produtividade comercial de raízes, peso médio de raiz comercial, formato de raízes, resistência a insetos do solo, teor de matéria seca das raízes e carotenóides totais. Além dessas características foram avaliadas também as características físicas e sensoriais: coloração da polpa, textura e maciez, doçura da polpa, tempo de cozimento e aceitabilidade das raízes aos clones de batata-doce. Para estudo do potencial de utilização na alimentação animal foram avaliados a produtividade de massa verde, o teor de matéria seca e a produtividade de massa seca das ramas. Já a silagem das ramas foi avaliada quanto ao teor de matéria seca, proteína bruta, FDA, FDN, NDT, pH, Fósforo, Cálcio e Sódio. O experimento foi conduzido em blocos ao acaso (DBC), compreendendo 12 clones e 4 repetições. As parcelas constaram de uma fileira de 4,5 m de comprimento, utilizando o espaçamento de 1...

‣ Resíduos sólidos orgânicos: da geração em estabelecimentos de produção de alimentos em um Shopping à destinação final na alimentação de suínos; Organic solid waste: generation in establishments producing food in a mall to the final destination to feed pigs

Juffo, Everton Eduardo Lopes Dias
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Dissertação Formato: application/pdf
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O presente trabalho tem como fundamento o Projeto de Reaproveitamento de Resíduos Sólidos Orgânicos via suinocultura, desenvolvido pelo Departamento Municipal de Limpeza Urbana (DMLU), da prefeitura municipal de Porto Alegre, e foi desenvolvido em 4 ações distintas. Na primeira, caracterizou-se o projeto através de pesquisa documental e entrevistas com os técnicos e produtores envolvidos no projeto, como forma de resgate histórico do mesmo e identificação das percepções dos entrevistados. A segunda foi a caracterização quantitativa e o grau de segregação dos resíduos orgânicos gerados em 14 estabelecimentos de alimentação, que preparam e servem alimentos (unidades de serviços de alimentação - USA), localizadas em um Shopping Center em Porto Alegre, que integra o projeto desenvolvido pelo DMLU. O alto grau de segregação incorreta (54,5%) observado representa um risco à saúde dos animais tendo em vista a presença de materiais como plásticos,cascas de frutas como abacaxi e palitos,os quais podem lesionar ou mesmo perfurar vísceras levando ao óbito dos suínos. Na terceira ação coletaram-se amostras dos RSO gerados nos 14 estabelecimentos, as quais foram homogeneizadas para compor uma amostra composta. Esta foi dividida em duas partes iguais sendo uma utilizada para análise microbiológica realizada no Laboratório de Medicina Veterinária Preventiva da UFRGS e outra encaminhada ao Laboratório de Nutrição Animal (LNA) da UFRGS...

‣ Effect of qualitative feed restriction on energy metabolism and nitrogen retention in sheep

Kamalzadeh,A.; Koops,W.J.; Kiasat,A.
Fonte: South African Journal of Animal Science Publicador: South African Journal of Animal Science
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2009 Português
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Periodic restrictions in feed quality and quantity is an important phenomenon in regions where animal production should bridge the gap between periods of forage production separated by a dry season. Eighteen Swifter male lambs, weaned at the age of ca. three months, were used to quantify effects of feed quality restriction and realimentation on changes in energy and nitrogen metabolism. The diet consisted of grass straw (17 MJ of gross energy [GE] and 46 g crude protein [CP] per kg dry matter [DM]) on an ad libitum basis and 35 g/kg0.75/d mixed concentrates (16.5 MJ of GE and 173 g CP per kg DM). At the age of ca. 3.5 months the animals were randomly divided into six blocks, based on live weight, according to a randomized complete block design. Within each block, the animals were randomly assigned to two restricted treatments (R1 and R2) and an unrestricted control (C) treatment. Treatments R1 and R2 were subjected to feed quality restriction by withholding the concentrate for 3 and 4.5 months, respectively. A modified linear model was developed to study the effects of restriction and realimentation. The comparison between treatments was made by analyzing the data of the R1 and R2 animals as deviations from the control animal in each block. During the restriction period...