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 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 Performance and egg quality of laying hens fed with dietary levels of digestible lysine and threonine

2012 ◽  
Vol 64 (3) ◽  
pp. 743-750 ◽  
Author(s):  
G.O Figueiredo ◽  
A.G Bertechini ◽  
E.J Fassani ◽  
P.B. Rodrigues ◽  
J.Á.G Brito ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Experimental Unit ◽  
Egg Mass ◽  
Feed Conversion ◽  
Linear Effect ◽  
Randomized Experimental Design ◽  
Egg Shell

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 Haugh unit in fresh eggs. There was a decreasing linear effect on the feed intake with increase of digestible lysine level. Egg weight, egg mass and feed conversion demonstrated a quadratic effect with the increase of the digestible lysine level with the best results in the diets with 0.754, 0.772 and 0.795% of digestible lysine, respectively.

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 Dual-Purpose Poultry in Organic Egg Production and Effects on Egg Quality Parameters

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 897
Author(s):  
Marianne Hammershøj ◽  
Gitte Hald Kristiansen ◽  
Sanna Steenfeldt
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Quality Parameters ◽  
Egg Laying ◽  
High Yield ◽  
Meat Production ◽  
Dual Purpose ◽  
Shell Quality ◽  
Egg Shell ◽  
Genotype A

Egg laying genotypes have been selected for generations due to their high yield and egg quality, resulting in efficient feed utilization and low body weight; hence, they are not suitable for meat production. This imposes an issue for the male layer chicks, which are killed at one day old. Because of ethical and food waste concerns, the search for suitable dual-purpose genotypes in order to avoid euthanasia of male day-old chicks has intensified. The aim of the present study is to evaluate potential dual-purpose genotypes for their egg quality compared to a representative egg laying genotype. Three dual-purpose genotypes with divergent characteristics were evaluated: genotype A represented an experimental crossbreed based on a broiler type male and an egg layer female, genotype B was a pure breed, and genotype C was a crossbreed of a layer type. These were compared to a control genotype D, which was an egg layer. Eggs were collected six times during the period of 21–54 weeks of hen age, i.e., a total of 1080 shell eggs were analyzed. Examined parameters were weights of egg, shell, yolk, and albumen, by calculating their relative proportions. Shell quality was assessed by shell strength, shell stiffness, and shell thickness. Yolk quality was determined as yolk color and inclusions of blood and meat spots, and albumen quality was evaluated in terms of pH and dry matter (DM) content. The egg layer genotype produced the smallest eggs with least blood and meat spot inclusions compared to that produced by the three dual-purpose genotypes. Shell quality was superior for the layer genotype. However, the experimental genotype A laid eggs of comparable shell quality, albumen DM, and yolk weight, but also with the darkest and most red-yellow colored yolk. The two other dual-purpose genotypes produced eggs of low-medium quality. In conclusion, the genotype A could serve as dual-purpose genotype from an egg quality perspective.

Influence of peeling and inorganic calcium concentration on the utilisation of giant taro (Alocasia macrorrhiza) corm meal by laying hens

2019 ◽  
Vol 59 (8) ◽  
pp. 1553 ◽  
Author(s):  
S. S. Diarra ◽  
I. Wamekeni ◽  
A. Vunagilee ◽  
H. Lavaka ◽  
T. Finau
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Shape Index ◽  
Egg Mass ◽  
Feed Conversion ◽  
Shell Quality ◽  
Laying Performance ◽  
Calcium Source ◽  
Main Effects

The effects of peeling and limestone flour level on the utilisation of Alocasia macrorrhiza corm meal (ACM) by laying hens were investigated. Maize-based diets with two concentrations of limestone flour (40 and 60 g/kg) and diets containing 200 g peeled and unpeeled ACM meal/kg with the same levels of limestone flour were fed to five replicate pens containing 10 20-week-old Shaver brown pullets (1635 ± 148 g), each for 105 days. Results showed no interaction or main effects of ACM or limestone concentration on feed intake, egg weight, egg mass, feed conversion efficiency, egg shape index, surface area and Haugh unit (P > 0.05). Feeding whole ACM with 40 g limestone/kg diet reduced hen-day production and shell thickness (P < 0.05) but this was overcome by increasing limestone concentration to 60 g/kg diet. Peeled ACM with both concentrations of limestone flour maintained laying performance and egg quality. We concluded that feeding 200 g whole ACM depresses egg production and shell quality in laying hens, but increasing dietary limestone concentration overcomes this adverse effect. The concentration of limestone flour in the diet has no effect on laying performance. Higher inclusion levels of ACM, calcium source and level that will maintain laying performance and reduce feed cost need to be investigated.

Substitution Value Of Maize Offal For Maize In Diets Of Laying Hens

2021 ◽  
Vol 17 ◽  
pp. 56-59
Author(s):  
O. J. Uko ◽  
P. Awoyesuku ◽  
G. M. Babatunde
Keyword(s):  
Weight Gain ◽  
Conversion Efficiency ◽  
Egg Production ◽  
Egg Quality ◽  
Optimal Level ◽  
Quality Parameters ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Egg Weight ◽  
Dietary Treatments

Two hundred and sixteen Golden Hubbard strain of laying eggs, aged 32 weeks, were used to investigate the optimal level of maize offal (MO) that could replace maize with no detrimental effects on the performance of the hens. Graded levels of MO(0, 10, 20, 30, 40, and 50%) replaced equal levels of maize in six dietary treatments (1 to 6 respectively). There were no significant (P>0.05) differences between diets in egg production and weight weight gain of the hens. Egg weight was highly influenced (P<0.01) by the dietary treatments, with 30% MO producing the heaviest eggs. Increasing dietary levels of MO significantly (P<0.01) significantly increased feed consumption. Feed conversion efficiency differed (P>0.05) only at 50% levels of dietary MO. Of the egg quality parameters investigated, albumen, yolk and shell percentages were not affected (P>0.05) by the MO, while the Haugh Units were (P<0.05).

scholarly journals Effect of Probiotics on production and egg quality of dual purpose chicken at Kathmundu in Nepal

2019 ◽  
Vol 48 (1) ◽  
pp. 29-35
Author(s):  
D Neupane ◽  
DB Nepali ◽  
N Devkota ◽  
MP Sharma ◽  
IP Kadaria
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Egg Production ◽  
Egg Quality ◽  
Proximate Analysis ◽  
Control Group ◽  
Feed Conversion ◽  
Nutrient Analysis ◽  
Significant Difference

A total of 448, Sakini (224) and Giriraja (224) breed of chickens were used to investigate the feed intake & weight gain from 0-150 days and egg production and egg quality from 150 – 240 days of age in Khumaltar Lalitpur Nepal. The four different levels of probiotics viz. 0,5, 10 and 15 ml of Probiotic (Poultry biosa)/kg of feed were used with randomized factor design 2*4*8(RBD) with 8 treatments and 8 replications. The data was recorded daily on feed intake and egg production and in every 15 days interval for weight gain. Results showed that the addition of probiotic to the feed significantly improved feed intake, weight gain , egg production and egg quality on sakini and giriraja breeds of chickens(P<0.05). Additionally, data on egg production and egg quality showed increased production in treatment group than control group (P<0.05).The general trend revealed increasing level of egg production from five to eight months with significant difference (P<0.05). Nutrient analysis of eggs by proximate analysis in terms of CP, CF, fat and energy showed significant difference (P<0.05). Thus to conclude, there is positive effect of probiotics for production and productivity in terms of feed conversion ratio, weight gain, egg production & egg quality in Sakini and Giriraja breed of Chicken. Bang. J. Anim. Sci. 2019. 48 (1): 29-35

scholarly journals Effect of exogenous Phytase on Egg Production and Egg Quality of Spent Hen

2020 ◽  
Vol 20 (1-2) ◽  
pp. 68-76
Author(s):  
MK Bashar ◽  
MAR Howlider ◽  
SM Bulbul
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Shape Index ◽  
Control Group ◽  
Egg Mass ◽  
Feed Conversion ◽  
Shell Weight ◽  
Spent Hen ◽  
Haugh Unit

The present study determined, assessed and quantified the exogenous phytase on egg production and egg quality of spent hens. Ninety laying hens (ISA- Brown) received iso-energetic and iso-nitrogenous diet supplemented with 0, 0.05, 0.1, 0.15 and 0.2 % phytase and reared in cages. Each layer was fed 120g feed/day from 90 to 100 weeks of age. At the inception of the study the spent hen at the age of 90 weeks had an average egg production 65.21 %. Phytase addition in diet increased (p<0.05) egg production  (7.67, 12.17, 12.04 and 15.87 % higher than control group), egg mass output (5.5, 9.34, 7.65 and 12.72 % higher than that of control) and feed conversion, but it did not alter shell weight, shell thickness, shape index, albumen index, Haugh unit, per cent yolk and yolk color. It was concluded that reduced egg production of spent hen at older ages to some extent might have a relationship to decreased availability of phosphorus. The decreased egg production in hens at older ages could be corrected by adding appropriate phytase level in the diet. Thus, it may be possible to extend and prolonged productive life of spent hens by supplying exogenous phytase in diet. However, the effect of availability of phosphorus on egg production using larger population for a longer period may be performed to confirm the findings of the current study. Bangladesh J. of Livestock Res. 20(1-2): 68-76, Jan-Dec 2013

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 Oils in Feed on the Production Performance and Egg Quality of Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3482
Author(s):  
Zhouyang Gao ◽  
Junnan Zhang ◽  
Fuwei Li ◽  
Jiangxia Zheng ◽  
Guiyun Xu
Keyword(s):  
Fatty Acids ◽  
Egg Production ◽  
Large Scale ◽  
Unsaturated Fatty Acids ◽  
Laying Hens ◽  
Egg Quality ◽  
Essential Fatty Acids ◽  
Production Performance ◽  
Feed Conversion

With the development of a large-scale and intensive production industry, the number of laying hens in China is rapidly increasing. Oils, as an important source of essential fatty acids, can be added to the diet to effectively improve the production performance and absorption of other nutrients. The present review discusses the practical application of different types and qualities of oils in poultry diets and studies the critical effects of these oils on production performance, such as the egg weight, feed intake, feed conversion ratio (FCR), and various egg quality parameters, including the albumen height, Haugh units, yolk color, and saturated/unsaturated fatty acids. This article reviews the effects of different dietary oil sources on the production performance and egg quality of laying hens and their potential functional mechanisms and provides a reference for the selection of different sources of oils to include in the diet with the aim of improving egg production. This review thus provides a reference for the application of oils to the diets of laying hens. Future studies are needed to determine how poultry products can be produced with the appropriate proper oils in the diet and without negative effects on production performance and egg quality.

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