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| Registros recuperados: 464 | |
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| Michelato,Mariana; Furuya,Wilson Massamitu; Graciano,Themis Sakaguti; Vidal,Luiz Vítor Oliveira; Xavier,Tadeu Orlandi; Moura,Lorena Batista de; Furuya,Valéria Rossetto Barriviera. |
| This trial was conducted to determine the dietary digestible methionine + cystine requirement of Nile tilapia (550 to 700 g) based on the ideal protein concept. Six hundred fish were distributed in a completely randomized design with five treatments and four replicates, with 30 fish per experimental unit. The fish were fed diets containing approximately 262 g of digestible protein/kg, 3,040 kcal of digestible energy/kg and 7.90, 9.40, 10.90, 12.40 or 13.90 g of methionine + cystine/kg. The fish were hand-fed three times a day until apparent satiation for 30 days. No effects of dietary methionine + cystine on feed conversion ratio, daily protein deposition, whole body moisture, fillet moisture, crude protein, ether extract and ash, plasmatic HDL and LDL... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Body composition; Fillet yield; Fish; Performance; Plasmatic lipid pattern. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100002 |
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| Castro,MR; Pinheiro,SRF; Oliveira,RG; Abreu,LRA; Mota,LFM; Miranda,JA. |
| ABSTRACT Three experiments were conducted to estimate the optimal digestible threonine to lysine ratios (Thr:Lys) of meat-type quails during the pre-starter (1 to 7 days), starter (8 to 14 days) and grower I (15 to 21 days) phases. In each experiment, 600 birds were distributed according to a completely randomized experimental design into five treatments, consisting of five dietary Thr:Lys ratios (0.66, 0.71, 0.76, 0.81 and 0.86%), with eight replicates of 15 quails each. Performance parameters and intestinal morphology were evaluated. During the pre-starter phase, feed intake, threonine intake, weight gain, and ileal villus height linearly increased (p<0.01) as dietary digestible Thr:Lys increased. During the starter phase, increasing digestible... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Coturnix coturnix ideal protein; Performance. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100302 |
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| Pastore,Silvana Marques; Albino,Luiz Fernando Teixeira; Gomes,Paulo Cezar; Oliveira,Will Pereira de; Viana,Gabriel da Silva; Silva,Eliane Aparecida da; Alves,Warley Junior. |
| ABSTRACT: This trial was performed to determine the dietary digestible threonine-to-lysine (dig. Thr-to-Lys) ideal ratio for laying hens fed with low-protein diets from 24 to 40 weeks of age. At 24 weeks of age, two hundred forty Hy Line W-36 laying hens were randomly assigned to five treatments, represented by five dig Thr-to-Lys ratios (60; 67; 74; 81 and 88%), with eight replicates each one with six hens per experimental unit. Digestible Thr-to-Lys did not affect laying hen performance and egg quality, except for digestible Threonine intake, which showed linear increase as dig. Thr-to-Lys ratios increased. Linear broken-line model was chosen to analyze data according to lack of fit. According to linear broken-linen estimates, digestible Threonine ideal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Performance; Egg quality; Ratios among amino acids. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001202229 |
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| Apolônio,Lourdes Romão; Donzele,Juarez Lopes; Oliveira,Rita Flávia Miranda de; Saraiva,Alysson; Silva,Francisco Carlos de Oliveira; Ferreira,Aloízio Soares; Kill,João Luís; Haese,Douglas. |
| The objective of this study was to evaluate the effects of increasing dietary digestible tryptophan levels on performance and carcass traits of growing pigs. Fifty crossbred castrated male pigs, with average initial and final body weight of 29.0 ± 1.20 kg and 60.4 ± 1.95 kg were allotted in a completely randomized block design, with five treatments (0.125, 0.133, 0.141, 0.149, and 0.157% of digestible tryptophan, corresponding to digestible tryptophan:lysine relations of 15.0, 16.0, 17.0, 18.0, and 19.0%, respectively) and five replicates, with two pigs per experimental unit, which was represented by the pen. Experimental diets and water were supplied ad libitum throughout the experimental period. Averages of minimum and maximum temperatures inside the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Ideal protein; Performance; Protein deposition. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100015 |
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| Apolônio,Lourdes Romão; Donzele,Juarez Lopes; Oliveira,Rita Flávia Miranda de; Saraiva,Alysson; Silva,Francisco Carlos de Oliveira; Ferreira,Aloízio Soares; Lima,Anderson Lazarini; Kill,João Luís. |
| In order to evaluate the effects of increasing dietary tryptophan levels on performance and carcass characteristics of growing pigs, a total of 60 crossbred castrated male pigs, with average initial and final body weights of 15.50 ± 1.15 and 30.60 ± 1.35 kg were used. Pigs were allotted in a completely randomized block design, with five dietary treatments (0.149, 0.158, 0.168, 0.177, and 0.187% digestible tryptophan, corresponding to digestible tryptophan:lysine relations of 16.0, 17.0, 18.0, 19.0, and 20.0%), six replicates, and two animals per experimental unit, which was represented by the pen. Experimental diets and water were supplied ad libitum throughout the experimental period. The average maximum and minimum temperatures inside the rooms were of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Ideal protein; Performance; Protein deposition. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000800012 |
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| Duarte,Karina Ferreira; Junqueira,Otto Mack; Filardi,Rosemeire da Silva; Siqueira,Jefferson Costa de; Puzotti,Maíra Mangili; Garcia,Edivaldo Antônio; Molino,Andrea de Britto; Laurentiz,Antonio Carlos de. |
| The objective of this experiment was to establish different criteria to evaluate the requirements of digestible tryptophan for broilers from 22 to 42 d of age, using different regression models (quadratic, exponential and Linear Response Plateau) and in case of statistical significance the comparison of means by Duncan test at 5% probability was also adopted. A total of 1,920 Cobb 500 male broilers were distributed in a completely randomized experimental design, with 6 treatments (6 digestible tryptophan levels: 0.1395, 0.1610, 0.1825, 0.2040, 0.2255 and 0.2470%) and 8 replications containing 40 broilers each. Performance and carcass characteristics were evaluated. The level of 0.2255% of digestible tryptophan numerically improves feed conversion, and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestible amino acids; Ideal protein; Performance; Regression analysis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000006 |
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| Duarte, Karina Ferreira; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Junqueira, Otto Mack; Universidade Estadual Paulista “Júlio de Mesquita Filho” / Universidade Federal de Goiás; Domingues, Carla Heloísa de Faria; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Filardi, Rosemeire da Silva; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Borges, Liliana Longo; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Praes, Maria Fernanda Ferreira Menegucci; Universidade Estadual Paulista “Júlio de Mesquita Filho”. |
| Current experiment established different criteria to evaluate the requirements of digestible valine for broilers from 22 and 42 days of age, by different regression models (quadratic, exponential and Linear Response Plateau) and, in the case of statistical significance, the comparison of means byDuncantest at 5% probability. A total of 1,920 Cobb 500 male broilers were used and distributed in an entirely randomized experimental design, with 6 treatments (6 digestible valine levels: 0.7192, 0.7729, 0.8265, 0.8802, 0.9339 and 0.9876%) and 8 replications, with 40 broilers each. Data on performance and carcass characteristics were evaluated. The level of 0.8265% digestible valine was considered standard. The inclusion of 0.816, 0.848 and 0.903% of digestible... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestible amino acids; Ideal protein; Performance; Regression analyses. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22761 |
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| Peake, Whitney O.; Marshall, Maria I.. |
| The impact of experience on entrepreneurial performance has been widely tested. Although experience is expected to positively impact performance, results are varied. This research synthesizes the current literature by determining systematic sources of variation through both exploratory and ordered probit analyses. Results reveal that start date for data collection and form of experience tested pose a major impact on the probability of obtaining a positive estimate for the experience-performance relationship. This research further emphasizes the need for tightened standards across the experience-performance literature in order to equip both academics and practitioners with better information. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Entrepreneurship; Experience; Performance; Meta-Analysis; Agribusiness; Labor and Human Capital. |
| Ano: 2009 |
URL: http://purl.umn.edu/49275 |
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| Okello, Julius Juma; Ndirangu, Lydia K.. |
| The need to provide agricultural information to farmers has led to emergence of numerous ICTbased MIS projects in developing country. These projects aim at promoting commercialization of smallholder agriculture and subsequently their welfare. This study examines the how the environment in which such ICT-based MIS affect their performance. It specifically uses the DrumNet project, an ICT-based MIS, to assess how the socio-economic, physical, political and physical environment in the project areas affected its performance. The study finds that those transaction-related problems, especially strategic default, deriving from these environmental factors greatly undermined the performance of DrumNet forcing it to relocate severally. It discusses policy... |
| Tipo: Journal Article |
Palavras-chave: ICT-based MIS projects; The DrumNet model; Operational environment; Performance; Kenya; Research Methods/ Statistical Methods. |
| Ano: 2010 |
URL: http://purl.umn.edu/96193 |
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| Faitarone,ABG; Pavan,AC; Mori,C; Batista,LS; Oliveira,RP; Garcia,EA; Pizzolante,CC; Mendes,AA; Sherer,MR. |
| This study assessed the effect of different cage stocking densities on the performance of Italian quails in the laying period. Two hundred and sixty four quails with 30 weeks of age and 280g mean body weight were used. Birds were randomly assigned to 96 x 33 x 16 cm cages and distributed in a randomized block design with 4 treatments (12, 15, 18 and 21 quails per cage or 264, 211, 176 and 151 cm² per quail, respectively) and 4 replicates. Birds were given feed and water ad libitum and submitted to the same experimental conditions. The experimental diet was formulated based on NRC (1994) recommendations. There were no significant differences among treatments for feed conversion per egg mass (kg:kg), percentage of broken eggs and mortality. There was a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cage stocking density; Economic traits; Italian quail; Performance. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100003 |
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| LIMA, L. D. de; ALENCAR, R. T.; DUARTE, T. F.; BATISTA, A. S. M.; ALBUQUERQUE, F. H. M. A. R. de; FACO, O.; COSTA, R. G.. |
| O Objetivo foi avaliar o efeito do creep feeding sobre as características da carne de cordeiros Morada Nova abatidos em diferentes idades. O uso de suplementação alimentar na fase de cria não altera a composição centesimal da carne e o aumento da idade ao abate, não interferiu negativamente a qualidade da carne, nas condições do estudo. O uso de suplementação alimentar na fase de cria não altera a composição centesimal da carne e o aumento da idade ao abate, não interferiu negativamente a qualidade da carne, nas condições do estudo. Mostra que a carne Morada Nova é uma excelente opção para abastecer o mercado cada vez mais exigente por qualidade. |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Raça Morada Nova; Qualidade da carcaça; Qualidade da carne; Idade ao abate; Brasil; Região Nordeste; Semiárido.; Ovino; Cordeiro; Performance; Carcaça; Produção de carne; Sheep; Lamb meat; Carcass composition; Meat production; Brazil; Semiarid zones; Creep feeding.. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1088124 |
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| Brum, Olmiro Bochi; UFSM; Rosa, Alexandre Pires; UFSM; Stefanello, Catarina; Universidade Federal de Santa Maria; Dias, Elisandro Rafael; UFSM; Uttpatel, Rodrigo; UFSM. |
| Objetivou-se avaliar o desempenho de híbridos avícolas para atender a demanda de material genético em sistemas alternativos de criação. Foram utilizados 648 pintainhos de corte de ambos os sexos, provenientes do cruzamento entre reprodutores de corte e das raças Rhodes Island Red, White Plymouth Rock e Barred Plymouth Rock, distribuídos em seis tratamentos com seis repetições e 18 aves em cada unidade experimental, sendo o período de avaliação de um a 56 dias de idade. As características avaliadas foram: peso corporal (PC), ganho de peso (GP), consumo alimentar (CR), conversão alimentar (CA), e peso de carcaça (PCA), pernas (PCS) e peito (PP). O delineamento experimental foi o inteiramente casualizado, com seis tratamentos de seis repetições cada. Foi... |
| Tipo: Pesquisa de Campo |
Palavras-chave: Produção Animal; Criação de Animais avicultura alternativa; Cruzamentos avícolas; Desempenho zootécnico; Reprodutores pesados Produção Animal alternative poultry; Poultry breeding; Performance; Broiler breeder males. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/8863 |
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| Moraes,ML; Ledur,VS; Kessler,AM; Machado,PHM; Della,MP; Ribeiro,AML. |
| An experiment was conducted to evaluate the effect of an enzyme blend (EB) on the performance, diet metabolizability, phosphorus (P) retention, and bone mineralization of broilers fed diets containing 10% defatted rice bran (DRB). In total, 432 one- to 38-d-old male Cobb broilers were evaluated according to a completely randomized experimental design in 3 x 2 factorial arrangement. Three diets were tested with two nutrient reductions (NR) in the matrix (standard diet; NR I of 75 kcal/kg ME, 0.1% Ca and 0.1% available P; and NR II of 100 kcal/kg ME, 0.1% Ca and 0.1% available P) with or without the addition of an EB (200 g/t). The coefficients of total tract apparent retention (CTTAR) of the diets and P retention were determined by collecting excreta during... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler chicken; Defatted rice bran; Enzyme blend; Metabolism; Mineral retention; Performance. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200191 |
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| Sheng-Qiu,T; Xiao-Ying,D; Chun-Mei,J; Jing-Jing,P; Shan-Shan,L; Jin-Ding,C. |
| The aim of the present study was to determine whether dietary Bacillus subtilis natto could affect growth performance of Muscovy ducks. A total of 120 hundred Muscovy ducks at the age of 1 day were randomly assigned to four groups (30 Muscovy ducks/group), and fed with diets supplemented with 0% (control group), 0.1%, 0.2%, and 0.4% Bacillus subtilis natto, respectively during the 6-week feeding period. Weight gain, feed intake and feed conversion efficiency of Muscovy ducks were significantly improved by the dietary addition of Bacillus subtilis natto, and the results were more significant in 0.4% dietary Bacillus subtilis natto treatment group; Also, Bacillus subtilis natto reduced Escherichia coli and Salmonella colonies, and increased lactobacilli... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus subtilis natto; Muscovy ducks; Performance; Biochemical parameter Duodenum; Microflora; Immune organ. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300004 |
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| Lara,L.J.C.; Baião,N.C.; Cançado,S.V.; Teixeira,J.L.; López,C.A.A.; Duarte,F.D.; Michalsky,V.B.. |
| The influence of weight classes (light, medium and heavy) of Ross chicks on performance and carcass yield and main cuts, was studied using a completely randomized design with six replicates of 30 males and 30 females each. The chicks were fed on the same diets during the growing period (1-43 days). The live weight, feed intake, feed:weight gain ratio, viability, carcass yield and main cuts (breast, whole leg, wing and back) and percentages of giblets (gizzard, liver, heart and guts) were analyzed. The heavy weight class chicks were heavier (P<0.05) than the light weight class chicks, during all the growing period and showed higher feed consumption (P<0.05) than the light and medium classes chicks. No differences among weight classes chicks concerning... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler; Initial body weight; Performance; Yield. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000600015 |
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| Carvalho,CMC; Fernandes,EA; Carvalho,AP de; Maciel,MP; Caires,RM; Fagundes,NS. |
| The objective of this study was to evaluate the performance and carcass characteristics of broilers fed exclusively vegetable diets and diets containing animal meal with the addition of creatine or not after day 8. In the experiment, 1080 one-day-old male chicks were distributed according to a completely randomized experimental design into six treatments with six replicates each. A control diet based on corn and soybean meal was formulated, to which animal meals and creatine were included or not. Diets were formulated to contain equal mineral (calcium, phosphorus and sodium) and amino acid (available methionine + cystine, lysine and threonine) levels. The following treatments were applied: A. control (diet based on corn and soybean meal); B. control +... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Performance; Blood meal; Carcass yield; Meat and bone meal. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300015 |
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| Ibrahim,NS; Sabic,EM; Abu-Taleb,AM; Abdel-Moneim,AE. |
| ABSTRACT The present study was carried out to evaluate the effects of dietary supplementation of different levels of full-fat canola seeds (FFCS) on productive performance, blood metabolites and antioxidant status of laying Japanese quails. A total of 360, 8-week-old quails were divided into a completely randomize design with 4 dietary experimental groups and three pens each, each pen containing 30hens. The experimental groups were fed iso-caloric and iso-nitrogenous diets supplemented with FFCS at levels 0, 50, 100 and 150 g/kg diet. The experiment lasted 16 weeks. All supplemented groups showed significant effects in the final body weight (g), hen feed consumption (g/hen/day), egg mass (g egg/hen/day) and hen-day egg production (%). However, egg weight... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Full-fat canola seed; Performance; Blood metabolities; Antioxidant; Laying quail. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100318 |
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| Arantes,UM; Stringhini,JH; Oliveira,MC; Martins,PC; Rezende,PM; Andrade,MA; Leandro,NSM; Café,MB. |
| The aim of this study was to evaluate the performance, tibial density and mineral content, Na, K ,and Cl serum levels, and dry matter content of the litter of broilers fed diets with different levels of dietary electrolyte balances. Two experiments were carried out: during the starter phase (7 to 21 days of age, 960 broilers) and during the growe phase (22 to 38 days of age, 816 broilers). In both experiments, a completely randomized design with four treatments based on dietary electrolyte balance values (200, 240, 280 and 320 mEq/kg of diet) with four replicates was applied. Birds and diets were weighed when birds were seven, 14 and 21 days of age in the first experiment, and 22 and 38 days of age in the second experiment in order to determine weight... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone density; Performance; Potassium; Poultry litter; Sodium. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300010 |
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| Registros recuperados: 464 | |
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