scholarly journals Effect of different phosphorus levels on the performance and egg quality of laying hens fed wheat- and maize-based diets

2010 ◽  
Vol 55 (No. 10) ◽  
pp. 420-427 ◽  
Author(s):  
M. Skřivan ◽  
M. Englmaierová ◽  
V. Skřivanová
Keyword(s):  
Feed Intake ◽  
Shell Thickness ◽  
Egg Quality ◽  
Negative Impact ◽  
Quality Parameters ◽  
Available Phosphorus ◽  
Egg Weight ◽  
Diet Type ◽  
Phosphorus Levels

The effects of diet type (wheat- or maize-based) and concentration of available phosphorus (AP; about 4, 3 and 2 g/kg) on the parameters of hen performance and egg quality as well as shell calcium (Ca) and phosphorus (P) contents were examined. Two experiments were carried out in which 240 and 120, respectively, older ISA Brown hens were housed in enriched cages. The interaction of diet type and AP concentration was ascertained for all evaluated characteristics except the amount of Ca and P deposited in shells in the first experiment. In the second experiment, the interaction of diet type and AP concentration was found for feed intake, egg weight, shell thickness and weight as well as the albumen quality parameters. Furthermore, Ca deposition in shells increased (P < 0.001) with the wheat diet. Hens fed a maize-based diet (P < 0.001) laid heavier eggs. The highest level of AP (4.1 g/kg) in the wheat-based diet significantly (P < 0.001) decreased albumen height, albumen index and Haugh units (HU). These trends were the same in both experiments. The results indicate that 0.27% AP in wheat-based diet and 0.30% AP in maize-based diet are adequate for hens with the intake 115 g of feed with 3.5% of Ca without a negative impact on performance or egg quality.

scholarly journals The effect of dietary phytase and various available phosphorus levels on performance and egg quality in Japanese quail

2019 ◽  
Vol 20 ◽  
Author(s):  
Rafaella Rossetto ◽  
Maurício Barreta ◽  
Marcos José Migliorini ◽  
Fabíula Pecher ◽  
Lenílson Fonseca Roza ◽  
...  
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Quality Parameters ◽  
Available Phosphorus ◽  
Feed Conversion ◽  
Shell Quality ◽  
Randomized Experimental Design ◽  
Phytic Phosphorus ◽  
Phosphorus Levels

SUMMARY Birds show poor utilization of phytic phosphorus in their diets because of the lack of endogenous enzymes to digest phosphorus and make it bioavailable. Therefore, the objective of this study was to evaluate phytase supplementation in the diets of laying quails. Eighty quails were used in a completely randomized experimental design with five treatments and four replicates of four birds each. The treatments were as follows: 0.35% Pd; 0.20% Pd; 0.20% Pd + 500FTUs of phytase; 0.09% Pd; 0.09% Pd + 500 FTUs of phytase. The birds were housed in metallic batteries during a trial period of 21 days, for evaluation of egg production, egg weight, feed intake and feed conversion. After being collected, the eggs were sent to the nutrition laboratory of the department of zootechnics of the CEO/Udesc, where analyses of albumin, yolk and shell quality were performed. The results were subjected to analysis of variance, and the differences between the averages were compared using the Tukey test at 5% of significance. No differences (P> 0.05) were observed in terms of performance and egg quality parameters. We conclude that the inclusion of phytase in the diet of laying quails can be accomplished without compromising the performance and quality of the eggs. Additionally, 0.09% of 22 disponible phosphorus can be used to grant adequate performance for 21 days.

scholarly journals Quality of eggs from pasture rearing layers of different genotypes

2020 ◽  
Vol 36 (2) ◽  
pp. 181-190
Author(s):  
Zdenka Skrbic ◽  
Milos Lukic ◽  
Veselin Petricevic ◽  
Snezana Bogosavljevic-Boskovic ◽  
Simeon Rakonjac ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Egg Quality ◽  
Egg Yolk ◽  
Vegetation Period ◽  
Shape Index ◽  
Quality Parameters ◽  
Egg Weight ◽  
Naked Neck ◽  
Quality Properties ◽  
Shell Quality

The comparison of physical quality properties of table eggs of commercial hybrid Tetra SL and two native indigenous breeds of hens, Banat Naked Neck and Svrljig hen, was performed in conditions of alternative production in the pasture system in portable cages without the floor. The experiment was conducted during the vegetation period, at the age of hens of 53-57 weeks. In order to produce good quality eggs, the diet was designed with a complete mixture based on maize and soybean. In addition, constant availability of pastures was ensured. Egg sampling was performed in the morning and the initial egg quality was examined based on egg weight, shape index, egg white, egg yolk and shell quality parameters. Layer hens of the commercial hybrid Tetra SL had significantly higher egg weight and better internal egg quality (p<0.01) compared to hens of Banat Naked Neck and Svrljig hens, except for the colour of the yolk, which was more intense in the same feeding and breeding conditions and the age of laying hens, in eggs of native breeds (p<0.01). Native breeds in relation to the commercial hybrid had lighter shell colour (p<0.01). Deformation and egg shell thickness differed (p<0.01) between all three genotypes. The determined rank of layer hen genotypes for shell thickness was: Tetra SL, Banat Naked Neck, Svrljig hen. However, the breaking force was without statistically confirmed difference between hen genotypes.

scholarly journals Productivity and Egg Quality of Two Commercial Layer Hybrids Kept in Free-Range System

2018 ◽  
Vol 6 (10) ◽  
pp. 1444
Author(s):  
Muhittin Tutkun ◽  
Muzaffer Denli ◽  
Ramazan Demirel
Keyword(s):  
Feed Intake ◽  
Feed Efficiency ◽  
Laying Hens ◽  
Egg Quality ◽  
Stocking Density ◽  
Quality Parameters ◽  
Production Performance ◽  
Poultry House ◽  
Free Range

The purpose of this study was to compare the performance and egg quality parameters of two layer hybrids (Lohmann Brown and Atak-S) which were reared in free-range system. The experiment was carried out with a total of 300 laying hens. From 18 to 50 weeks of age Lohmann Brown (LB) and Atak-S (AS) were housed in two groups of 150 hens in a poultry house with a stocking density of 7 hens/m2. The 2 trial groups were formed from 10 repetitions each consisting of 15 hens. At the 20, 30, 40 and 50 weeks of ages, the production performance and egg quality parameters were evaluated. Mean daily feed intake and feed efficiency through the trial were 111.2 g vs 124.3 g, and 2.46 vs 2.58 respectively for LB and AS hybrids (P

scholarly journals Glycerin from biodiesel in the feeding of red-egg layers

2017 ◽  
Vol 38 (2) ◽  
pp. 1009 ◽  
Author(s):  
Grazielly Stefany Pinto Fontinele ◽  
Silvana Cavalcante Bastos Leite ◽  
Carla Nágila Cordeiro ◽  
Cláudia De Castro Goulart ◽  
Adailton Camêlo Costa ◽  
...  
Keyword(s):  
Feed Intake ◽  
Egg Production ◽  
Egg Quality ◽  
Control Diet ◽  
Production Cycle ◽  
Egg Mass ◽  
Egg Weight ◽  
Randomized Design ◽  
Completely Randomized Design

The aim of this study was to evaluate the effects of vegetable glycerin on performance and egg quality of red-egg layers in the second production cycle. A total of 252 Hy-Line Brown layers weighing 1.919 ± 0.095 kg, at 90 weeks, were used in a completely randomized design with six treatments and seven birds per replication. The experiment lasted 84 days. Treatments consisted of a control diet (no glycerin) and five diets with increasing levels of vegetable glycerin (2, 4, 6, 8, and 10%). The following variables were evaluated: feed intake (g/bird/day); egg production (%); egg weight (g); egg mass (g/bird/day); conversion per egg mass (kg kg) and per dozen eggs (kg/dz); percentages of albumen, yolk, and shell; eggshell thickness (mm); and egg specific gravity. (Y = 67.69 + 54.23X, R2 = 0.78) and egg mass (Y = 44.84 + 42.87X, R2 = 0.66) improved linearly with the glycerin levels. A quadratic effect was observed (Y = 114.11 + 336.96 X – 3,169.6 X2, R2 = 0.52) on feed intake. In conclusion, glycerin can be used to partially replace corn in diets for layers in the second production cycle at inclusion levels of up to 10%.

scholarly journals Available phosphorus in poultry. 1. Effect of phosphorus levels on the performance of laying hens and their egg quality, hatchability, bone analysis and strength in relation to calcium and phosphorus in blood plasma.

1979 ◽  
Vol 27 (2) ◽  
pp. 176-183
Author(s):  
A.R. El Boushy
Keyword(s):  
Shell Thickness ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Breaking Strength ◽  
Available Phosphorus ◽  
Inorganic P ◽  
Shell Quality ◽  
Calcium And Phosphorus ◽  
Phosphorus Levels

1. For 6 months 432 medium heavy laying hens were given diets which supplied 0.16, 0.20, 0.40, 0.60, 0.80 or 1.00% available phosphorus. Egg production was greatest by hens given 0.20 or 0.40% P and least by those given 0.16%. Feed intake did not differ among groups. Heaviest eggs, 62.2 g, were laid by hens given 1.00% P. Shell quality, determined from shell percentage, shell thickness and shell index, decreased as P in the diet increased. Hatchability, yolk and white indices of eggs and calcium, P and ash in tibiae of chicks one day old did not differ among groups. Ca in blood of hens did not differ among groups but inorganic P in plasma increased with increasing P in the diet. Ash, Ca and P in tibiae and breaking strength of tibiae of hens increased with increasing P in the diet. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Effect of substitution of groundnut cake with Anthonotha macrophylla seed meal on layer performance and quality of chicken egg

2021 ◽  
Vol 34 (2) ◽  
pp. 220-225
Author(s):  
C.S. Durunna ◽  
C.M Ezeagu ◽  
C.G Anene ◽  
N.J. Okeudo
Keyword(s):  
Feed Intake ◽  
Egg Production ◽  
Egg Quality ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Seed Meal ◽  
Feed Conversion ◽  
Egg Weight ◽  
Inclusion Level

Five layer diets were formulated containing 0.5,10, 15 and 20% Anthonotha macrophylla seed meal which replaced equivalent proportion of groundnut cake. One hundred and eighty Babcock brown layers already 3 months in lay were randomized into 5 groups and each group was fed one of the experimental diets for 84 days. The hens were examined for performance using body weight. teed intake, henday egg production, egg weight and feed conversion ratio. The interior quality of Eggs were also assessed. Total feed intake ranged from 9.27 to 10.97kg, average daily feed intake, from 110.32 to 130.54 g/bird/day, hen-day egg production, from 48.88% to 79.11% and feed conversion ratio, from 1.87 to 2.15. Statistical analysis showed that total feed intake,  average daily feed intake and hen - day egg production were similar across the dictary treatments up to the 15% level of inclusion, but were significantly depressed (P<0.05) at the 20% inclusion level.  However, diet had no significant effect on final body weight and average egg weight and feed conversion ration (P>0.05). Similarly results on egg quality showed no significant effect (P>0.05) on albumen index, yolk index, yolk colour, Haugh unit and shell thickness. Based on these results, it was concluded that Anthonotha macrophylla seed meal can be incorporated into layer diets up to 15%, inclusion level without incurring a depression in performance Layer diets containing this meal ingredient had no deleterious effect on egg quality.

scholarly journals Effect of activated clinoptilolite in aflatoxin B1 contaminated laying hen diets on aflatoxin B1 residues and quality of eggs

2017 ◽  
pp. 13-22
Author(s):  
Ergün Demir ◽  
Hüseyin Eseceli ◽  
Akif Özcan
Keyword(s):  
Aflatoxin B1 ◽  
Egg Quality ◽  
Quality Parameters ◽  
Laying Hen ◽  
Production Performance ◽  
Egg Weight ◽  
Treat Ment ◽  
High Level ◽  
Chicken Blood

This study was carried out to determine the effect of a high level of aflatoxin B1 in laying hen diets, supplemented with deactivated and activated clinoptilolite, on inner and outer quality and aflatoxin B1 residues in eggs. Two experimental groups were formed and fed high aflatoxin B1 diets (965 ppb) containing deactivated and activated (450 ?C for 60 minutes) clinoptilolite (2% of diet) for 49 days. In the experiment, a total of 960 55-week-old Lohmann LSL (white) laying hens were used. Each group had 8 replicates and 480 hens. Egg weight, inner and outer egg quality parameters and egg aflatoxin B1 levels were determined in a total of 90 eggs collected on the 15th, 30th and 49th days of the experiment. Diets containing deactivated or activated clinoptilolite decreased aflatoxin B1 production in laying hen diets after incubation period of 15 days. Activation of clinoptilolite by heat treat?ment significantly reduced aflatoxin B1 level in eggs (p<0.05). In addition, the use of clinop?tilolite as an antifungal agent in the presence of high aflatoxin B1level in layer hen diets significantly increased the weight of eggs and significantly reduced the ratio of broken-cracked and dirty eggs (p<0.05). Chicken blood albumin, creatinine and calcium levels were higher in hens fed diet containing activated clinoptilolite (p<0.05). However, triglyceride and VLDL levels decreased significantly in the blood of these animals (p <0.05). In conclusion, the supplementation of hen diets containing high aflatoxin B1 with activated clinoptilolite improves production performance, egg quality and decreases aflatoxin B1 residue in the egg.

scholarly journals Egg quality in different lines of New Hampshire and Giriraja chicken

2021 ◽  
Vol 49 (2) ◽  
pp. 108-118
Author(s):  
N Baskota ◽  
M Sharma ◽  
N Bhattrai ◽  
D Neupane ◽  
RK Yadav ◽  
...  
Keyword(s):  
New Hampshire ◽  
Significant Variation ◽  
Shell Thickness ◽  
Egg Quality ◽  
Shape Index ◽  
Quality Parameters ◽  
Quality Parameter ◽  
Egg Weight ◽  
Egg Diameter ◽  
Better Than

This study was undertaken to evaluate the egg quality parameters of New Hampshire and Giriraja by maintaining four different flocks (lines) of New Hampshire viz. NH-Khajura, NH-Parwanipur, NH-Khumaltar and NH-Pokhara and three different flocks (lines) of Giriraja viz. GR-Pakhribas, GR-Khumaltar and GR-Tarhara. The 40-60 weeks of hatchability, fertility, external and internal egg quality parameters were studied and recorded. A total of 200 birds (40 weeks of age) of each New Hampshire and Giriraja from each line were maintained on deep litter system. Results from this study indicated the significant effect of genotype and respective lines on fertility and hatchability of eggs. Significant (P<0.05) variation in fertility and no significant variation in hatchability for genotypes were found. However, in terms of fertility and hatchability, there were significant variations in different lines. In case of egg weight:  no significant (P<0.01) variation was obtained for genotype but lines comparison showed significant variation. Other external egg quality parameters like egg length, egg diameter, shape index, shell thickness were examined for evaluating the genotype and line effect. In all these external egg quality parameters, there were significant (P<0.01) effect of both genotype and lines of birds. For internal egg qualities, yolk weight (g), yolk index, albumen weight and albumen index were checked. Genotype had no significant (P<0.01) effect but lines had significant (P<0.01) effect on yolk weight. In case of yolk index, both genotype and lines of bird had no significant effect. For albumen weight and albumen index, genotype of birds had no significant (P<0.01) effect but lines of bird had significant (P<0.01) effect on both parameters. The study showed that the egg quality parameters of NH (Khajura) were better than that of GR. Among different lines New Hampshire (Khajura) showed better performance in terms of egg quality parameter. Bang. J. Anim. Sci. 2020. 49 (2): 108-118

scholarly journals Effects of dietary levels of sun-dried sheep manure on productive performance and egg quality parameters of Shika-brown layers

2021 ◽  
Vol 35 (2) ◽  
pp. 195-201
Author(s):  
F. O. Abeke ◽  
S. O. Ogundipe ◽  
S. A. Sekoni ◽  
I. A. Adeyinka
Keyword(s):  
Feed Intake ◽  
Shell Thickness ◽  
Egg Production ◽  
Egg Quality ◽  
Quality Parameters ◽  
Productive Performance ◽  
Feed Conversion ◽  
Feed Cost ◽  
Sheep Manure ◽  
Haugh Unit

An experiment was conducted to test the effect of dietary levels of sun-dried sheep manure (SSM) on egg quality parameters and productive performance of Shika-Brown layers. Six isonitrogenous and almost isocaloric diets were formulated to contain SSM at 0.0, 1.0, 2.0, 3.0, 4.0 and 5.0 % level of inclusion. Diet I, which had no sheep manure, served as the control. White maize was used for the formulation of the diets. Each of the six diets was replicated four times with five birds per replicate in a completely randomised design experiment. The birds were housed singly in cages. The laying hens were first maintained on the control diet which contained very little or no yolk pigmenting factor for a depigmentation period of twenty-one days. During this period, samples of eggs were broken out and yolk colour scores were determined using the Roche Yolk Colour Fan (RYCF). By the twenty-first day, the (RYCF) scores had dropped to the lowest value of one. The hens were then placed on the experimental diets for the study, which covered a period of twelve weeks. Parameters measured for the egg quality included egg yolk colour, Haugh unit value, yolk index and shell thickness. For the performance characteristics, parameters measured included percent hen day and hen housed egg production, percent peak egg production, feed intake, feed conversion efficiency (kg feed/12 eggs) and feed cost per /2 eggs produced. Results obtained indicate that dietary levels of SSM had a significant (P<0.05) effect on RYCF scores and feed intake but had no significant (P>0.05) effect on other parameters such as egg weight, Haugh unit, yolk index, shell thickness, shell weight, percent shell, feed conversion efficiency, feed cost (N/12 eggs), percent hen day, hen housed and peak egg production.

scholarly journals The Characteristics and Quality of Egg from Commercial Laying Hens Fed with Garlic (Allium Sativum) Supplemented Ration

2020 ◽  
Vol 21 (2) ◽  
pp. 98 ◽  
Author(s):  
Jein Rinny Leke ◽  
Erwin Wantasen ◽  
Florencia Sompie ◽  
Femy Hadidjah Elly ◽  
Ratna Siahan
Keyword(s):  
Shell Thickness ◽  
Allium Sativum ◽  
Laying Hens ◽  
Egg Quality ◽  
Laying Hen ◽  
Negative Effects ◽  
Shell Weight ◽  
Egg Weight ◽  
Garlic Powder

The research aimed to determine the characteristics and quality of egg of commercial laying hens fed ration supplemented with garlic (Allium sativum) powder. The research used Completely Randomized Design (CRD) with five treatments and four replicates (5 hens each) for a total of 100 brown laying hens strain MB 402. Garlic powder contained 24.62% crude protein, 38.81% fat, and 1.74% crude fiber. The treatments of garlic powder ration were 0, 2, 4, 6, and 8%. The treatments performed were dietary, with R0 = 100% based diet (BD); R1= 98% based diet (BD) + 2% garlic meal (GM); R2= 96% based diet (BD) + 4% GM, R3 = 94% based diet (BD) + 6% GM, R4 = 92% based diet (BD) + 8% GM. The study was conducted during eight (8) weeks. Collected data were quality, weight, shell weight, albumen weight and shell thickness of eggs. Data was analyzed with Analysis of Variance (ANOVA) and continued with Duncan’s Multiple Range Test (DMRT). The results showed that 8% garlic powder ration increased weight and albumen weight of eggs. There were no significant effect of treatments in yolk weight, shell weight and shell thickness of eggs. Garlic powder supplementation on laying hen ration affected egg weight and albumen weight. The addition of garlic powder on laying hen ration of up to 4% increased egg weight. Albumen weight increased until garlic powder supplementation of up to 8%. It is recommended the use of 8% garlic powder supplementation on lying hen ration without negative effects on egg quality.

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