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| Registros recuperados: 11 | |
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| Melo, Ramon Duque; Cruz, Frank George Guimarães; Feijó, Julmar da Costa; Rufino, João Paulo Ferreira; Melo, Lucas Duque; Damasceno, Jessica Lima. |
| The objective of this study was to evaluate the increasing levels (0, 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6%) of black pepper in diets for laying hens on performance, egg quality and blood biochemical parameters. Hissex White hens (n=168) at 30 weeks of age were used. The experimental method was completely randomized with seven treatments with four replicates of six birds each. Estimates of black pepper levels were determined by polynomial regression. The performance showed no significant differences (p > 0.05). The eggshell percentage was significantly influenced (p < 0.05), in which the level of 0.30% inclusion impaired eggshell quality. Triglycerides level increased significantly (p < 0.05), according to increasing levels of black pepper in the diet.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutrição Animal alternative food; Eggshell; Phytogenic; Piperine; Serum metabolism.. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31498 |
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| Lacoue Labarthe, T; Warnau, A; Oberhansli, F; Teyssie, J; Koueta, Noussithe; Bustamante, Paco. |
| Cuttlefish eggs were exposed to background concentrations of dissolved Ag and Cd, using the radiotracers Ag-110m and Cd-109. At different time of the embryonic development (50 days), some eggs were placed in non-contaminating conditions. During the experiment, the uptake and depuration kinetics, and distribution of these metals among the egg compartments (i.e. eggshell, vitellus, peri-vitelline fluid and embryo) were assessed. In parallel, experiments were conducted with sub-lethal concentrations of stable Ag and Cd (2 and 1 mu g l(-1), respectively) to compare the metal behaviour at higher concentrations. From the spawning date up to I month of development, both metals were taken up efficiently by the eggs, reaching load/concentration ratio (LCR) of 1059... |
| Tipo: Text |
Palavras-chave: Cephalopod; Permeability; Eggshell; Embryo; Biokinetics; Silver; Cadmium. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-3882.pdf |
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| Nassiri Moghaddam,H; Kazemi Fard,M; Agah,MJ; Hosseini,SJ; Mirakzehi,MT. |
| An experiment was conducted to determine the effects of different levels of methionine, protein and tallow on productive performance and egg quality of laying hens in the late phase of production. A completely randomized design with a 3×2×2 factorial arrangement, with three levels (0.34, 0.31, and 0.27%) of methionine (MET), two levels (12.8 and 14.7%) of protein (PRO) and two levels (1 and 3%) of tallow (TAL) with constant level of linoleic acid (1.55 ± 0.02%), was used. A number of 144 Hi-Line W-36 layers from 70 to 76 wk of age was randomly distributed into 12 treatment groups with 4 replicates of 3 hens each. Egg production and egg weight were daily recorded and feed intake and egg quality traits were recorded every 2 wk. There was a significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eggshell; Egg weight; Fat; Specific gravity; Sulfur amino acids. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200010 |
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| Rayan,GN; El-Attar,AH; Fathi,MM. |
| ABSTRACT The present study was conducted on pair aged commercial laying breeder strains (Hy-Line Brown and Hy-Line W-36) to evaluate genetic differences of eggshell and bone quality. In addition, egg production performance, mortality rate, internal organs and reproductive measurements were determined. Correlation coefficients among some eggshell and bone traits were calculated. White layer breeder hens had significantly higher percentages of hen-day and hen-housed egg production compared to the brown one. Brown Hy-Line layer breeder strain had better eggshell quality compared to W-36 Hy-Line layer breeder strain. The white layer breeder strain had a significantly higher relative oviduct weight compared to the brown one. Brown layer breeder strain recorded... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeders strain; Eggshell; Bone quality; Correlation coefficients. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200311 |
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| Oliveira,Alexsandro Nunes de; Freitas,Ednardo Rodrigues; Filgueira,Thales Marcel Bezerra; Cruz,Carlos Eduardo Braga; Nascimento,Germano Augusto Jerônimo do. |
| The experiment was conducted to evaluate the effects of limestone particle size and the use of artificial light for laying hens in the second laying cycle. We used 240 Hisex White laying hens at 82 weeks of age in a completely randomized design in a 5 × 2 factorial arrangement, resulting in 10 treatments with 4 replicates of 6 birds. The variables were the five particle sizes obtained by increasing the proportion of thick limestone (0, 25, 50, 75 and 100%) compared with thin limestone and two lighting programs: with and without artificial light. Limestone particle size and light did not affect performance or egg quality. However, there were changes in bird feeding schedule throughout the day as a response to the lighting program. Bone quality, density and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcium; Eggshell; Lighting; Nutrition; Bone strength. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000700004 |
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| MONGE,C C; OSTOJIC,H; AGUILAR,R; CIFUENTES,V. |
| Gray gulls, Larus modestus, nest 1500 m above sea level in northern Chile's Atacama Desert, one of the driest in the world. Their eggshell gas permeability, one third of that found in other Larus species, is an adaptation that reduces water loss, but at the expense of oxygen diffusion into the air cell with resultant hypoxia and reduced metabolic rate. This contrasts with characteristics found in birds nesting at very high altitudes where oxygen diffusion across the egg shell is maximized at the expense of water conservation. The oxygen consumption (MO2) of Larus modestus is 66% that of Larus argentatus; the oxygen conductance (GO2) is equivalent to 48% of that obtained in 5 other bird species. The oxygen partial pressure (PAO2) in the air chamber of Larus... |
| Tipo: Journal article |
Palavras-chave: Atacama; Eggshell; Oxygen conductance; Oxygen consumption; Gray gull (Larus modestus). |
| Ano: 2000 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602000000300007 |
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| Melo,RD; Cruz,FGG; Melo,LD; Feijó,JC; Rufino,JPF; Brasil,RJM; Oliveira Fº,PA; Silva,FMF. |
| ABSTRACT The objective of this study was to determine the ideal requirement of sodium to molted laying hens. The experimental period lasted 105 days, divided into five periods of 21 days. Hisex White laying hens 150 with 84 weeks-of-age were used. The experimental design was completely randomized in a factorial scheme (5x3) with treatments constituted by five levels of sodium (0.10, 0.15, 0.20, 0.25, and 0.30%) in the diets, and three postmolt stages (early = 21 days, medium = 63 days, and final = 105 days). Performance and egg quality results were evaluated by Tukey test at 5%. Eggshell resistance and weight gain results were evaluated by polynomial regression at 5%. Except the yolk height, all performance and egg quality variables were affected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egg quality; Eggshell; Performance; Sodium; Weight gain. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100325 |
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| Hunton,P. |
| The eggshell is an important structure for two reasons. Firstly it forms an embryonic chamber for the developing chick, providing mechanical protection and a controlled gas exchange medium. Secondly it is a container for the market egg, providing protection of the contents and a unique package for a valuable food. The superficial structure of the shell has been known for over 100 years. The shell consists of 97% calcium carbonate, and this is provided to the hen in the diet. However, the chemical must be broken down in the digestive system and then re-synthesized in the shell gland to form the shell. This results in a turnover of blood Ca of ~ 100 times each 24 hours. Provision of calcium to layers has been researched at length, but the key work, conducted... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcium; Eggshell; Eggshell proteins; Shell structure. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200001 |
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| Ribeiro,CLN; Barreto,SLT; Reis,RS; Muniz,JCL; Viana,GS; Ribeiro Junior,V; Mendonça,MO; Ferreira,RC; DeGroot,AA. |
| ABSTRACT Calcium (Ca) and available phosphorus (avP) requirements for egg production are different between the beginning and the end of the egg-production cycle. The objective of this study was to estimate the Ca and avP requirements of Japanese quails at end of the production phase. In total, 256 Japanese quails with 48 weeks of age were randomly distributed in 2 x 2 factorial arrangement consisting of two Ca levels (29 and 38 g/kg) and two avP levels (1.5 and 3.0 g/kg), totaling four treatments with eight replicates of eight hens each. The variables evaluated were feed intake (FI); egg production (EP); marketable egg production (MEP); egg weight (EW); egg mass (EM); feed conversion ratio per egg mass (FCRM); feed conversion ratio per dozen eggs (FCRD);... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coturnix; Bone development; Dicalcium phosphate; Eggshell; Bone mineral deposition. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500033 |
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| Rocha,Thalita; David,José Augusto de Oliveira; Caetano,Flávio Henrique. |
| Ultramorphological features of the egg of Telmatoscopus albipunctatus (Williston) (Diptera, Psychodidae). Psychodidae flies, also known as sewage, sand and filter flies are important for medical and veterinary purposes. General information about life cycle and adult habits is available, but few species are known about the egg morphology. Therefore, in this study, the egg ultramorphology of Telmatoscopus albipunctatus (Williston, 1893) was analyzed by scanning electron microscopy to describe its structure, generating data for further comparison between different fly species and genera. General aspects of T. albipunctatus egg are similar to other Psychodidae; egg measuring approximately 0.4 mm in length and 0.1 mm in width. However, based on the continuous... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eggshell; Exochorion; Filter flies; Ultramorphology. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000200005 |
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| Traldi,AB; Menten,JFM; Silva,CS; Rizzo,PV; Pereira,PWZ; Santarosa,J. |
| Two experiments were carried out to determine which factor influences weight at hatch of broiler chicks: breeder age or incubated egg weight. In Experiment 1, 2340 eggs produced by 29- and 55-week-old Ross® broiler breeders were incubated. The eggs selected for incubation weighed one standard deviation below and above average egg weight. In Experiment 2, 2160 eggs weighing 62 g produced by breeders of both ages were incubated. In both experiments, 50 additional eggs within the weight interval determined for each breeder age were weighed, broken, and their components were separated and weighed. At hatch, hatchlings were sexed and weighed, determining the average initial weight of the progeny of each breeder age. Data were analyzed using the Analyst program... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Albumen; Eggshell; Hatchling weight; Incubation; Yolk. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400011 |
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| Registros recuperados: 11 | |
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