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Registros recuperados: 52 | |
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OLIVEIRA, D. de S.. |
Resumo: Objetivou-se avaliar dietas formuladas conforme o NRC (2007), com ou sem restrição de nutrientes, para cordeiros de dois grupos genéticos naturalizados ao semiárido brasileiro, prevendo-se maturidade precoce e tardia. Avaliou-se o consumo (g/UTM), a digestibilidade, o comportamento ingestivo, o desempenho e características da carcaça e da carne dos cordeiros; procedendo-se ainda análise econômico-financeira das dietas. Foram utilizados 20 cordeiros Santa Inês e 20 Morada Nova. Adotou-se o delineamento experimental inteiramente ao acaso, em esquema fatorial 2 x 2, com dois tipos de formulações (para maturidades precoce e tardia) e dois níveis de restrição de proteína (PB) e energia (NDT) (0 e 15%), com cinco repetições por tratamento para cada grupo... |
Tipo: Teses |
Palavras-chave: Semiárido; Brasil; Nutritional requirements; Fattening; Diets; Semiarid climate.; Nutrição animal; Ovinocultura; Indicador econômico; Genótipo; Cordeiro; Nutriente; Exigência nutricional; Dieta; Terminação; Animal nutrition; Sheep; Lambs; Economic indicators; Feed requirements; Nutrients; Brazil.. |
Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1087250 |
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COSTA, H. H. A.. |
Objetivou-se verificar o efeito de diferentes proporções de volumoso:concentrado em dietas para ovinos considerando parâmetros de exigências nutricionais do NRC versões 1985 e 2007. Realizaram-se ensaios de consumo e digestibilidade aparente, parâmetros ruminais e sanguíneos, desempenho e observações das atividades comportamentais. Foram utilizados vinte ovinos, machos, com quatro meses de idade, mestiços Santa Inês, com peso vivo (PV) médio 19,5±3,49 kg em um delineamento inteiramente casualizado. O consumo de matéria seca (CMS), de matéria orgânica (MO), MS e MO digestível não foram influenciados pelas dietas (P>0,05). As dietas com relação 44:56, 48:52 e 52:48 não diferiram entre si (P>0,05) e proporcionaram maiores consumos de proteína bruta... |
Tipo: Teses |
Palavras-chave: Desempenho; Requerimento nutricional; Consumption; Intake; Nutritional requirements; Ovino; Nutrição animal; Dieta; Consumo; Digestibilidade; Nutriente; Sheep; Animal nutrition; Digestibility; Brazil. |
Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/965305 |
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GONÇALVES, J. de L.. |
Resumo: As pastagens cultivadas são uma das opções para reduzir os impactos negativos da estacionalidade do pasto nativo. Dentre as forrageiras tropicais, as do gênero Panicum, com destaque para o capim-Tanzânia (Panicum Maximum cv. Tanzânia), se destacam por possuir altas taxas de acúmulo de forragem e bom valor nutricional, sendo uma ótima opção quando se trabalha em sistemas irrigados em que se deseja aumentar a capacidade de suporte. Diversos fatores, como idade, espécie, fatores climáticos, manejo e características do solo podem influenciar a qualidade das plantas forrageiras, fazendo se necessário o uso de metodologias para avaliar a qualidade da dieta. As exigências nutricionais podem mudar conforme a fase fisiológica e há necessidade em determinar... |
Tipo: Teses |
Palavras-chave: Balanço de nutriente; Variedade Tanzânia; Capim-Tanzânia; Cultivated pasture; Nutritional requirements; Supplements.; Feed crops; Pasto; Exigência nutritional; Ovino; Ovelha; Nutrição animal; Suplemento alimentar; Forrageira tropical; Eficiência nutricional; Gramínea forrageira; Gramínea tropical; Panicum Maximum.; Sheep; Nutrient balance.. |
Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/997268 |
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Pelicia,K; Garcia,EA; Faitarone,ABG; Silva,AP; Berto,DA; Molino,AB; Vercese,F. |
This experiment studied the effect of four calcium (3.0, 3.5, 4.0, and 4.5%) and four available phosphorus levels (0.25, 0.30, 0.35, and 0.40%) in the diet of semi-heavy commercial layers after molting. Hisex Brown® layers between 90 and 108 weeks of age were distributed in a completely randomized experimental design with a 4x4 factorial arrangement with 16 treatments of five replicates of eight birds each. mortality, egg production, feed intake, egg mass, average egg weight, calcium and phosphorus intake, feed conversion ratio (per dozen eggs and per kg eggs), eggshell percentage and thickness, eggshell strength, eggshell weight per surface area (ESWSA), yolk percentage and color, albumen percentage, albumen and yolk heights, and blood and excreta calcium... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Available phosphorus; Egg quality; Nutritional requirements; Post-molting; Semi-heavy layers. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100007 |
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Lima, Rodrigo Barbosa; Figueiredo-Lima, Denise Fontana. |
Four types of poly unsaturated fatty acids (PUFA) are essential for all shrimp species, linoleic (LOA, 18:2n-6), alfa-linolenic (ALA, 18:3n-3), eicosapentaenoic (EPA, 20:5n-3) and docosahexaenoic (DHA, 22:6n-3) acids. Moreover, the arachidonic acid (ARA, 20:4n-6), even when present, seems to be, in crustaceans, not so important or yet dispensable. It is relevant knowing that cholesterol as much as PUFA are not well absorbed when not followed by a substantial amount of lecithin, reaching 5% of the ration. The sum of PUFA reaches around 3% of the diet, even varying according to the species, stage and ration type. For Penaeus monodon, a complex mathematic model was formulated in order to describe the relationships between the requirements of the cited PUFA.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lipids; Fatty acids; Aquatic invertebrates; Nutritional requirements. |
Ano: 2016 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14000 |
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Toledo,Rodrigo Santana; Rostagno,Horacio Santiago; Albino,Luiz Fernando Teixeira; Vargas Junior,José Geraldo de; Carvalho,Débora Cristine de Oliveira. |
The objective of the present study was to evaluate the effect of dietary crude protein (CP) levels and the use of a nutritive solution via drinking water on the performance of pre-starter broilers. A total of 1,224 male Avian Farm chicks, from one to 40 days of age were used. Birds were distributed in a completely randomized experimental design with a 3 × 2 × 2 factorial arrangement, consisting of three initial body weights (low: 41 g, standard: 45 g and high: 49 g; two crude protein levels at the pre-starter phase (22 and 25% CP),with or without the addition of a nutritive solution, whose nutritional level was similar to the 25% CP pre-starter diet, at a concentration of 5% of the drinking water. Each treatment included six replicates and 17 chicks per... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Chicks; Nutritional requirements; Performance; Starting phase. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001000020 |
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Machado,Noédson de Jesus Beltrão; Lima,Cristina Amorim Ribeiro de; Brasil,Ronner Joaquim Mendonça; Quaresma,Débora Vaccari; Dilelis,Felipe; Silva,Ana Paula Pereira da; Curvello,Fernando Augusto. |
ABSTRACT Five experiments were conducted to estimate the digestible threonine requirements of slow-growing broilers: experiment 1, starter phase (days 10 to 28); experiment 2, grower I phase (days 29 to 49); experiment 3, grower II phase (days 50 to 69); experiment 4, finisher phase (days 70 to 84); and experiment 5, which was specifically conducted to determine the production of intestinal mucin over two periods (days 50 to 69 and 70 to 84). Different birds were used in all experiments. A completely randomized design with five treatments and four replicates was used. Treatments consisted of increasing the values of digestible threonine in the diet through basal feed supplementation with L-threonine (98.5%), which was added instead of cornstarch. The... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acid; Nutritional requirements; Villus. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100514 |
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Dhert, P.; Lim, L.C.; Lavens, P.; Chao, T.M.; Chou, R.; Sorgeloos, P.. |
In spite of its aquaculture potential, the larval rearing of greasy grouper (<i>Epinephelus tauvina</i>) remains problematic and is not yet commercially feasible. The low and unpredictable larval survival is due to difficulties encountered in spawning the broodstock, the small size of the larvae at first feeding, and the high sensitivity of the larvae until day 45. The nutritional requirements for the broodstock as well as for the young larvae are still enigmatical. In this presentation the impact of supplementing the highly unsaturated fatty acids (HUFA), eicosapentaenoic (EPA), and docosahexaenoic acid (DHA) to the broodstock and larval diets is illustrated. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diets; Fatty acids; Fish culture; Fish eggs; Fish larvae; Nutritional requirements; Survival. |
Ano: 1991 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2852 |
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Buteri,CB; Tavernari,F de C; Lelis,GR; Rostagno,HS; Albino,LFT. |
An experiment was carried out at the Department of Animal Science of the Federal University of Viçosa, Brazil, to evaluate the effects of different nutritional plans on the performance of male and female Ross broilers. A completely randomized experimental design with a 6x2 factorial arrangement (six nutritional plans x two sexes) with six replicates of 20 birds per experimental unit was applied. The nutritional plans adopted for males and females included 3, 5, or 28 feeds, and the other 3 plans included 28 feeds containing 92.5, 100, and 107.5% of digestible lysine requirements established according to a mathematical model developed exclusively for Ross broilers. The results showed that the tested 28-feed feeding programs are equivalent, and allow similar... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding programs; Lysine levels; Nutritional requirements. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400003 |
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Regadas Filho,José Gilson Louzada; Pereira,Elzânia Sales; Villarroel,Arturo Bernardo Selaive; Pimentel,Patrícia Guimarães; Fontenele,Rildson Melo; Costa,Marcus Roberto Góes Ferreira; Maia,Iana Sérvulo Gomes; Sombra,Weberte Alan. |
This study was carried out to estimate efficiencies of the utilization of metabolizable energy for maintenance (k m) and weight gain (k g) and to evaluate the Small Ruminant Nutrition System (SRNS) model in predicting dry matter intake and average daily gain of growing Santa Ines sheep. Twenty-four non-castrated Santa Ines sheep, at 50 days of age and with average body weight of 13.00 ± 0.56 kg, respectively, were used. After a 10-day adaptation period, four animals were slaughtered to be used as reference for estimating initial empty body weight and body composition of the other animals. The remaining animals were distributed in a random block design, with the treatments consisting of diets containing different levels of metabolizable energy (2.08, 2.28,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mechanistic model; Nutritional requirements; Semiarid. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100038 |
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Prados,L.F.; Valadares Filho,S.C.; Detmann,E.; Zanetti,D.; Santos,S. A.; Sathler,D.F.T.; Mariz,L.D.S.; Borges,A.L.C.C.; Nunes,A.N.; Rodrigues,F.C.; Amaral,P.M.. |
The aim of this study was to determine the nutritional requirements of energy and protein for maintenance and weight gain of crossbred cattle, as well as their efficiencies. Fifty 3/4 Zebu × 1/4 Holstein crossbred bulls with initial weights of 214±4kg and aged 11±0.2 months on average were used in this experiment. Four animals were used in the reference group; ten bulls were fed at the maintenance level; and the remaining 36 bulls were fed ad libitum and distributed in a completely randomized design in a 3×3 factorial arrangement, which had three feedlot periods (56, 112 or 168 days) and three calcium and phosphorus levels (low, medium and normal) in the diet. Four of the maintenance animals had their heat production measured by respirometry at the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crossbred bulls; Minerals; Nutritional requirements. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000200555 |
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Registros recuperados: 52 | |
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