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| Registros recuperados: 10 | |
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| Feddern,Vivian; Prá,Marina Celant De; Mores,Rúbia; Nicoloso,Rodrigo da Silveira; Coldebella,Arlei; Abreu,Paulo Giovanni de. |
| ABSTRACT Eggs are one of nearly perfect protein foods, offering nutrients of great biological value. However, during storage, egg albumen and yolk components may alter and deteriorate egg quality. Therefore, the aim of this work was to assess egg quality during 9-week storage. Parameters such as Haugh unit, weight loss, egg width and length, specific gravity, yolk and albumen dimensions and their pH were evaluated weekly. A total of 270 eggs (n=5) collected from two different hen strains were evaluated under room (20 to 35 °C in summer; 11.2 to 29.7 °C in autumn) and refrigerated (0 to 5 °C in summer; -3.1 to 6.5 °C in autumn) temperatures. For storage time, an unfolding analysis was accomplished by regression analysis using orthogonal polynomials. As a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Weight loss; Shell color; Haugh unit; Yolk index.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300322 |
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| Menezes,Pasquoal Carrazzoni de; Lima,Evilda Rodrigues de; Medeiros,Juliana Pinto de; Oliveira,Wanessa Noadya Ketruy de; Evêncio-Neto,Joaquim. |
| The objective of this research was to evaluate the quality of eggs from Dekalb White hens under different temperatures (room temperature, 25 ºC; and refrigeration, 8 ºC), storage times (7, 14 and 21 days), age of birds (35, 40, 45 and 50 weeks) and housing densities (625, 500, 416.6 and 357.14 cm²/birds). Haugh unit (HU) values and albumen height of 1,120 eggs from 528 laying hens, randomly allocated to four groups with different population densities were evaluated. The results showed a significant effect on Haugh units, between the time and storage conditions and between the ages of laying hens and storage condition. Eggs stored in refrigeration showed less weight loss and better Haugh unit indices when compared with eggs stored at room temperature. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egg storage; Haugh unit; Hen; Laying; Population density. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000900014 |
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| Alleoni,Ana Cláudia Carraro; Antunes,Aloísio José. |
| The functional properties of foods can be preserved when they are coated with edible films, since both the loss of moisture and the transport of O2 and CO2 are reduced. The objectives of this work were: to compare weight loss, Haugh units, and albumen pH between fresh eggs and eggs coated with whey protein concentrate (WPC), under six storage periods (3, 7, 10, 14, 21 and 28 days), at 25°C. During the entire storage period, regardless of whether the eggs were coated or not, the Haugh unit values and the weight loss decreased, and differences between values from the first to the last period were lower for coated eggs. Albumen pH increased. The Haugh unit values for coated eggs were similar to those found in literature references when the same storage period... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: WPC coating; Egg quality; Haugh unit; Weight loss. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300006 |
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| Suckeveris, Diana; Muñoz, Julian Andres; Demuner, Leandro Félix; Caetano, Vinícius Camargo; Faria Filho, Daniel Emydgio de; Faria, Douglas Emygdio de. |
| Effects on diets with reduction of crude protein and methionine + cystine (RCP) and protease supplementation (PRO) for laying hens at different ages and their influence on the internal quality of eggs at different conditions (STO) and storage times (TM) are evaluated. Four hundred and twenty eggs from commercial Hy-Line W36 laying hens collected at 32, 44 and 58 weeks of age were used. Experimental design was completely randomized in a factorial scheme 3 x 2 x 2 x 2: RCP (control, enhancement of one and two times the enzyme protease), PRO (with and without protease), STO (room temperature and refrigerated) and TM (14 and 28 days), with seven replications of one egg per experimental unit. The factorial scheme 3 x 2 x 2 was used at 58 weeks of age, because... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.00.00-2; 5.04.03.00-1; 5.04.03.01-0 egg yolk; Egg white; Enzyme; Haugh unit; Nutrition; Poultry.. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/27929 |
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| Guedes, Lis Lorena Melúcio; Souza, Camilla Mariane Menezes; Saccomani, Ana Paula de Oliveira; Faria Filho, Daniel Emygdio de; Suckeveris, Diana; Faria, Douglas Emygdio de. |
| Current assay evaluates the internal quality of eggs of Hy-Line W-36 hens, according to storage time, temperature and packaging. Two equal experiments, starting one day apart, were conducted with 140 eggs each. The two experiments were divided into two phases, from 1 to 9 days and from 9 to 21 days, in a randomized block design. In the 1st phase, the treatments were arranged in a factorial 2 x 3+1, packaging (with or without), time (3, 6 and 9 days), with control on the 1st day. In the 2nd phase, treatments were arranged in a factorial design 2 x 2 + 1, packaging (with or without), cooling (with or without), and control on the 9th day. Egg weight, albumen, yolk and shell percentage, yolk index and Haugh unit were evaluated. The internal quality was reduced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.00.00-2 storage of eggs; Type of packaging; Haugh unit. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/28922 |
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| Matos, Maíra Silva; UFG; Leandro, Nadja Mogyca; UFG; Carvalho, Fabyola Barros; UFG; Stringhini, José Henrique; UFG; Café, Marcos Barcellos; UFG; Lopes, Karina Ludovico; UFG. |
| Objetivou-se avaliar diferentes níveis de lisina e treonina digestíveis na ração de poedeiras Lohmann LSL, entre 25 a 44 semanas de idade sobre a qualidade de ovos. Utilizaram-se 360 poedeiras, alimentadas com rações com diferentes níveis de lisina digestível (0,700; 0,800 e 0,900%), combinadas com os de treonina digestível (0,500; 0,550 e 0,600%) em ração com 16% de PB. O delineamento experimental foi inteiramente ao acaso em esquema fatorial 3x3 (três níveis de lisina e três de treonina), totalizando nove tratamentos, com cinco repetições de oito aves cada. Os dados de peso específico, peso do ovo, sólidos totais da gema, unidade Haugh, percentagem da gema, do albume e da casca foram submetidos à análise de variância e a regressão polinomial foi adotada.... |
| Tipo: Pesquisa de campo ; análise laboratorial |
Palavras-chave: 5.04.00.00-2 Zootecnia aminoácido digestível; Poedeiras leves; Unidade Haugh 5.00.00.00-4 Ciências Agrárias digestible aminoacids; Laying hen; Haugh unit. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2745 |
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| Figueiredo,G.O; Bertechini,A.G; Fassani,E.J; Rodrigues,P.B.; Brito,J.Á.G; Castro,S.F. |
| The present study was developed using 864 Hy-Line W36 laying hens (42 to 58 weeks of age) with a randomized experimental design in a 4x3 factorial arrangement, with five replicates and 12 birds per experimental unit and 4 evaluation periods of 28 days each. The digestible lysine levels studied were 0.675%, 0.743%, 0.811% and 0.879%, and the digestible threonine levels were 0.542%, 0.596% and 0.650%. The performance and egg quality was evaluated. There were no significant effects on the egg production, specific gravity, albumen and yolk percentage and total solids in albumen and yolk for birds submitted to the different dietary digestible lysine and threonine levels. There was significant interaction between these amino acids on the egg shell percentage and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Laying hens; Crude protein; Haugh unit. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000300028 |
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| GARCIA,ELIS REGINA DE M.; CHAVES,NATÁLIA R.B.; OLIVEIRA,CARLOS ANTONIO L. DE; KIEFER,CHARLES; MELO,EVILÁSIO P. DE. |
| Abstract In order to evaluate the effect of rosemary oil and micro mineral sources on the performance and egg quality of laying hens, 288 hens were used and distributed in a completely randomized design using a 2x3 factorial (mineral sources x rosemary oil) with six different diets and six replications. Diets were formulated containing inorganic or organic minerals, with or without added rosemary oil (100 and 200 mg kg-1). The treatments showed interaction for average egg weight, yolk color, albumen and yolk percentage, with significant results from the use of organic minerals compared to inorganic minerals. The addition of 200 mg kg-1 rosemary oil in diets improved laying rate, egg mass, specific gravity, number of pores on the shell when compared to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chelated mineral; Feed intake; Haugh unit; Rosmarinus officinalis; Shell thickness. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300851 |
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| Pereira,Anielli Souza; Santos,Taisa Tavares dos; Coelho,Ana Flávia Santos. |
| The objective of this study was to investigate the influence of storage conditions on the physicochemical (mass, albumen height, pH, and Haugh unit) and microbiological (Salmonella spp., determination of the Total and Thermotolerant Coliforms, and Counting of the Mesophilic Aerobic Bacteria) quality of eggs. In the first experiment, a questionnaire was applied, and 33 samples of eggs were collected for the Salmonella spp analysis. In the second experiment, the eggs were collected from supermarkets, open markets, and distributors for physicochemical analysis. In the third experiment, 175 eggs were collected from the distributor, packaged in cardboard boxes lined with plastic wrapping, stored at 5 °C and 28 °C, and the physicochemical and microbiological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbiological quality; Egg; Samonella spp.; Haugh unit. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000100012 |
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| Registros recuperados: 10 | |
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