scholarly journals Effect of outdoor access and increased amounts of local feed materials in the diets of hens covered by the gene-pool protection programme for farm animals in Poland on quality of eggs during peak egg production / Wpływ dostępu do wybiegu i zwiększonego udziału krajowych komponentów paszowych w żywieniu rodów kur objętych programem ochrony na jakość jaj w szczycie nieśności

2013 ◽  
Vol 13 (2) ◽  
pp. 327-339 ◽  
Author(s):  
Józefa Krawczyk ◽  
Zofia Sokołowicz ◽  
Sylwester Świątkiewicz ◽  
Ewa Sosin-Bzducha
Keyword(s):  
Rhode Island ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Yolk ◽  
Farm Animals ◽  
Control Group ◽  
Standard Diet ◽  
Native Breed ◽  
Outdoor Area

Abstract The objective of the study was to test the hypothesis that eggs from native breed laying hens fed a diet containing increased amounts of local feed materials are not inferior in quality to eggs from laying hens receiving a standard diet but raised without outdoor access. The study involved Greenleg Partridge (Z-11) and Rhode Island Red hens (R-11). Within each breed, the control group (C) consisted of 60 hens kept on litter without outdoor access, stocked at 5 birds/m2 and fed a diet containing 65.3% of local feed materials. The experimental group (E) contained 60 layers maintained on litter with access to an outdoor area (11 m2 per bird) and fed a diet containing 77.1% of local feed materials. Eggs from hens of both breeds, which received diets containing increased proportions of local feed materials had lower weight but higher yolk percentage. The quality of eggshells from hens fed the diet with increased amounts of local materials was similar to that of eggshells from confined hens. Egg yolk lipids from experimental groups were characterized by a more beneficial n-6/n-3 acid ratio and elevated vitamin A levels. These eggs had better sensory scores for colour, flavour and aroma, which suggests that it is appropriate to raise native breeds of chickens with outdoor access and local feed materials can be used in extensive husbandry systems.

Application of the feed additive «Abiotonic» in poultry farming

2021 ◽  
Vol 1 (10) ◽  
pp. 72-78
Author(s):  
Valentina M. Bachinskaya ◽  
◽  
Aleksandr A. Deltsov ◽  
Dmitrii V. Gonchar ◽  
◽  
...  
Keyword(s):  
Amino Acids ◽  
Egg Production ◽  
Laying Hens ◽  
Average Daily Gain ◽  
Live Weight ◽  
Poultry Meat ◽  
Feed Additive ◽  
Control Group ◽  
Standard Diet ◽  
Nonessential Amino Acids

This paper presents a study of the effect of the feed additive «Abiotonic» on the indicators of egg and meat productivity when applied to laying hens. It was found that with the additional introduction of this additive into the standard diet of poultry, the content of nonessential amino acids in their meat is 10% higher compared to the same parameters in the meat of chickens of the control group, the content of partially nonessential amino acids is by 8,5%, and of irreplaceable amino acids is by 6,7%. In addition, in the meat of laying hens, which used the feed additive «Abiotonic», the content of selenium (Se) is 29,4% higher than in the meat of birds of the control group, and iron (Fe) – by 20%. The average daily gain in live weight of the birds in the experimental group was 3,6 g more than in the control hens. Microbiological research made it possible to establish that poultry meat, regardless of the introduction of the feed additive «Abiotonik», meets the established requirements and is safe for human consumption. «Abiotonic», in addition, significantly improves the egg production of birds. It was found that the weight of eggs with the introduction of this feed additive in the diet in addition to the compound feed increased by an average of 1,2 g, and the egg production increased by 23 eggs in 7 days.

scholarly journals Production of laying hens in different rearing systems under hot weather

2017 ◽  
Vol 40 ◽  
pp. 37677
Author(s):  
Daniel Araujo Netto ◽  
Héder José D'Ávila Lima ◽  
Julia Rodrigues Alves ◽  
Bianca Corrêa de Morais ◽  
Mauricio Silva Rosa ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Production Systems ◽  
Egg Yolk ◽  
Feed Conversion ◽  
Negative Effects ◽  
External Quality ◽  
Weight Variation ◽  
Randomized Design

 The environment is very important for the performance of laying hens; thus, techniques are required to improve production systems, providing better welfare for poultry and consequent increase in the quality of the final product, the egg. This study aimed to evaluate the effects of rearing system, on the floor and in cage, on the performance and egg internal and external quality of laying hens. A total of 320 Hysex Brown laying hens, with 34-43 weeks days of age, was distributed in a completely randomized design, with two treatments, floor and cage, with 10 replicates each. The parameters evaluated were: individual feed intake, egg production per replicate, feed conversion per dozen eggs, egg weight; weight and percentage participation of shell, albumen and yolk, specific gravity, body weight variation and viability of birds. The results show that the birds raised on the floor showed best results as to egg production, besides the best internal and external quality, with greater weight of egg, yolk, albumen, shell and with lower losses of eggs. Because of the negative effects of the cage system, in general, hens presented lower results when compared to results of those raised on the floor. 

scholarly journals Colour and viscosity of egg yolk after addition of beetroot to feed for laying hens

2014 ◽  
Vol 83 (1) ◽  
pp. 39-44
Author(s):  
Vladimír Kopřiva ◽  
Pavel Suchý ◽  
Eva Straková ◽  
Michal Žďárský ◽  
Petr Dvořák
Keyword(s):  
Beta Vulgaris ◽  
Null Hypothesis ◽  
Laying Hens ◽  
Egg Yolk ◽  
Control Group ◽  
Standard Diet ◽  
Food Technology ◽  
Significant Difference ◽  
Preparatory Phase ◽  
The Difference

The colour and viscosity of egg yolk are among major indicators assessed by consumers and food technology. This study attempts to evaluate the colour and viscosity of yolk in laying hens’ eggs after the addition of dried beetroot (Beta vulgaris L. ssp. esculenta var. rubra) at the amount of 1% and 2% per feeding dose (in July and August 2012). The experiment was performed on 24 hens that were divided into three groups of 8 laying hens. The preparatory phase lasted one week (standard diet), followed by four weeks during which experimental layers received a diet enriched with beetroot. Then, all layers were fed a mixture without beetroot for the following four weeks. Eggs were collected during the whole period of 8 weeks. In total, 30 eggs from each group were subjected to analysis. The colour of eggs was determined using spectrophotometry, by the Colour-guide sphere spex portable colorimeter. The results showed a significant (P < 0.05) increase in value L* of yolk colour in experimental groups whereas values a* and b* (indicators of the international colorimetric scale CIELAB) did not vary significantly. Similarly, specific purity C*ab did not show a significant difference (P < 0.05) between the control and experimental groups. The egg yolk viscosity was lower in experimental groups compared to the control group but the difference was not significant. The addition of dried beetroot at the amount of 1 and 2% per feeding dose had no effect on colour and viscosity. This paper supported the null hypothesis that the addition of dried beetroot to the feeding dose at the amount of 1% and 2% has no effect on the colour and viscosity of egg yolk.

scholarly journals Extraction of Uronic Acid From Sargassum crassifolium and Its Feeding Effects On The Eggs Production and Quality of Lohmann Chicken Eggs

2020 ◽  
Vol 7 (3) ◽  
pp. 264
Author(s):  
Veybe Gresje Kereh ◽  
Ivonne Maria Untu ◽  
Marie Najoan ◽  
T. Lumi
Keyword(s):  
Drinking Water ◽  
Uronic Acid ◽  
Egg Production ◽  
Pathogenic Bacteria ◽  
Laying Hens ◽  
Brown Seaweed ◽  
Egg Yolk ◽  
Egg Mass ◽  
Chicken Eggs

ABSTRACTThe use of antibiotics in chicken feed is currently banned because it can cause resistance to pathogenic bacteria and cause residues in products. This study aimed to see the effect of drinking water containing uronic acid extracted from Sargassum crassifolium (S. crassifolium) on the physical and chemical quality of Lohmann chicken eggs. One hundred and twenty laying hens were divided into 2 groups: (1) chickens given commercial feed containing antibiotics and (2) feed without additional antibiotics. The chickens were randomly assigned to one of the 5 brown seaweed supplementation treatments in drinking water A1=0.0% S.crassifolium (control); A2=2.5% S.crassifolium; A3=5.0% S.crassifolium; A4=7.5% S.crassifolium; A5=10.0% S.crassifolium. The study used a completely randomized factorial design of 5 treatments, 2 factors, and 3 replications. Each replication consisted of 6 heads of laying hens. There were no differences between treatments on the performance of laying hens (egg production, egg weight, egg mass, feed conversion); physical quality (eggshell, egg yolk, egg white, shell thickness, egg yolk, Haugh unit, egg index) and chemistry (superoxide dismutase production, thiobarbituric acid reactive substances (TBARS) and Lohmann chicken egg cholesterol) but there was a difference in feed intake. The uronic acid extracted from S. crassifolium has not been able to increase the production and quality of Lohmann chicken eggs.Keywords: lohmann chicken, quality of eggs, Sargassum crassifolium, uronic acid

scholarly journals EDIBLEEGGQUALITYWHENIODINEISINTRODUCEDINTOLAYINGHENBODY

2021 ◽  
pp. 65-70
Author(s):  
L.V. Rastopshina ◽  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Federal District ◽  
Egg Yolk ◽  
Egg White ◽  
Egg Laying ◽  
The Body ◽  
Control Group ◽  
Trace Element Deficiency

The Altai Region along with the regions of the Siberian Federal District belongs to the zone with trace element deficiency including iodine deficiency. The research goal was to study the effect of iodine on edible egg quality of laying hens of the Rodonit cross. At the final stage of egg-laying, 4 groups of 4 laying hens were formed. No iodine was administered to the hens of the 1st control group. Starch-based iodine product was administered to the birds of the 2nd, 3rd and 4th trial groups into the lower third of the neck, under the wing and into the rump area in a dose of 1.5 mg per head. The egg production intensity in the trial groups was higher by 21.3-28.8%. Egg weight in the 1st control group was 65.6 ± 1.33g which was lower than that in the trial groups by 4.4% (2nd group); 3.7% (3rd group) and 1.5% 4th group). All eggs belonged to “select” grade. The 3rd and 4th trial groups had less egg white by 3.8 and 2.7%; the egg-yolk content increases in the eggs of the 2nd, 3rd and 4th trial groups by 1.2%, 9.4% and 2.4%, respectively, and the eggshell weight by 1.2-9.4% as com-pared to the control. The ratio of egg white and egg-yolk weight in the eggs of the trial groups was lower than in the control group by 9.38-19.29%, but the ratio of egg-yolk to egg white was by 10.4-23.9% higher. The following indices were higher in the trial groups as compared to the control: egg white index -by 1.4-17.1%; egg-yolk -by 3.2-6.4%; Haugh unit -by 7.2-11.1%; eggshell thickness -by 3.9-8.3%. The best results were obtained with the administra-tion of iodine to the hens in the region of the lower third of the neck. The enrichment of the body of laying hens of the Rodonit cross with iodine makes it possible to obtain the profitability of edible egg production at the level of 28.6-41.0%.

scholarly journals Effects of feed supplementation with manganese from its different sources on performance and egg parameters of laying hens

2014 ◽  
Vol 59 (No. 4) ◽  
pp. 147-155 ◽  
Author(s):  
K. Venglovská ◽  
Ľ. Grešáková ◽  
I. Plachá ◽  
M. Ryzner ◽  
K. Čobanová
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Protein Hydrolysate ◽  
Basal Diet ◽  
Egg Yolk ◽  
Control Group ◽  
Feed Supplementation ◽  
Positive Effects ◽  
Dietary Treatments

The objective of this study was to compare the effects of feed supplementation of laying hens with manganese from its inorganic and organic sources on performance and some parameters of egg quality. Ninety-six hens at 20 weeks of age were randomly allocated to 4 dietary treatments, each consisting of 6 replicates (4 birds per replicate). The control group was fed unsupplemented basal diet (BD) with only natural background Mn level of 46.4 mg/kg feed. For the three experimental treatments, the BD was supplemented with 120 mg Mn/kg either from Mn-sulphate or Mn-chelate of protein hydrolysate (Mn-Pro) or Mn-chelate of glycine hydrate (Mn-Gly). After 8 weeks of dietary treatments the egg production, egg weight, feed intake, and feed efficiency were not affected by dietary treatments. Regardless of the sources, Mn supplementation to feed resulted in significantly decreased percentages of cracked eggs compared to the unsupplemented control group. The thickness, weight, proportion, and index of eggshell were significantly elevated in all groups supplemented with Mn. The intake of Mn-Gly resulted in considerably increased Mn deposition in egg yolk compared to the control eggs. In the control and Mn-sulphate groups yolk malondialdehyde (MDA) started to increase after 20 and 30 days of egg storage respectively, whereas in eggs from hens given organic Mn-sources this parameter was not affected up to 40 days. Although there were no significant differences in MDA values between the treatments until 20 days of storage, the Mn-sulphate group showed significantly higher MDA concentration in yolks compared to the control group after 30 days of storage. These results demonstrate that supplementation of hens&rsquo; diet with Mn has positive effects on eggshell quality. Feed supplementation with Mn from organic sources appears to be more effective in preventing yolk lipid oxidation during cold storage of eggs than that from Mn-sulphate. &nbsp;

Influence of enzyme feed additive on the quality of eggs on the example of PJSC “Poultry plant Chelyabinskaya”

2020 ◽  
pp. 52-59
Author(s):  
S. Ermolov ◽  
V. Kosilov ◽  
Yu. Barabanova
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Labour Productivity ◽  
Feed Additives ◽  
Poultry Meat ◽  
Feed Additive ◽  
Simultaneous Increase ◽  
Control Group ◽  
Experimental Group

Poultry farming is one of the major branches of animal husbandry, which develops through concentration, specialization and intensification on the basis of poultry plants and poultry farms. The increase in production of eggs and poultry meat is based on a significant increase in the productivity of poultry with a simultaneous increase in its population with a high payment of feed by production and the increase in labour productivity. The purpose of the work was to study the influence of enzyme feed additives in the diets of laying hens on the quality of eggs. The researches have been carried out in PJSC “Poultry plant Chelyabinskaya”, which produces high-quality chicken eggs obtained from the poultry cross “Loman LSL-classic”. The object of study was enzyme drugs produced by Sunzyme – a multi-enzyme drug that includes xylanase, cellulase and mannase activities. The dosage of enzyme drugs in the feed mixture of laying hens was: Sunfyze 5000 – 80 g/t, Sunzyme – 100 g/t. The results of researches show that in the groups that received enzyme drugs in their diet, egg production was higher than in the control group. So, for the entire period of researches the hens of the experimental groups were significantly superior to the control group in terms of egg production per average laying hen. The largest difference was in hens of the 1st experimental group (enzyme drug Sunfyze) – 10,8 eggs; the smallest in hens of the 3rd group (enzyme drugs Sunfyze and Sunzyme) – 5,7 eggs. In hens of the 2nd experimental group compared with hens of the control group egg production was higher by 7,9 eggs. The best indicators of production efficiency have been obtained in the 1st experimental group of laying hens, which were fed with the enzyme feed additive Sunfyze to reduce the nutritional value of the diet according to the matrix.

The effectiveness of the inclusion of domestic enzymes in the compound feed to increase the egg production of laying hens and the quality of eggs

2021 ◽  
pp. 33-41
Author(s):  
L. R. Mikhailova ◽  
L. V. Zhestyanova ◽  
A. Yu. Lavrentiev ◽  
N. M. Kostomakhin ◽  
V. S. Sherne
Keyword(s):  
Production Technology ◽  
Egg Production ◽  
Laying Hens ◽  
Feed Consumption ◽  
Control Group ◽  
Egg Weight ◽  
Chicken Eggs ◽  
Experimental Group ◽  
Poultry Farming

Compound feed are subject to requirements for their composition, since they use several types of grains that contain anti-nutritive substances that reduce the digestibility and use of nutrients. One of the tasks of domestic poultry farming is to reduce losses by increasing the digestibility and accessibility of feed. Among the most effective ways to solve this problem is to add enzymes to the feed of poultry. The inclusion of enzyme drugs in the composition of compound feed contributes to the inactivation of anti-nutritive substances, which contributes to an increase in the coeffi cient of digestibility of nutrients. The purpose of the work was to establish the feasibility and eff ectiveness of the enrichment of compound feed used in the production technology of chicken eggs with mixtures of enzyme drugs of domestic production of Amylosubtilin G3x, Cellolux-F and Protosubtilin G3x. Three groups of laying hens with 57 heads in each have been formed: a control group and two experimental groups. The duration of the experiment was 420 days. Laying hens of the control group have been received farm compound feed depending on their age. Laying hens of the 1st experimental group have been received compound feed of the control group enriched with the enzymes Amylosubtilin G3x and Cellolux-F depending on the age. In the compound feed of laying hens of the 2nd experimental group enzyme drugs were additionally introduced depending on the age Amilosubtilin G3x and Protosubtilin G3x. Higher egg production rates have been observed in the 1st experimental group – 357,81 eggs, which was 6,48 % higher than in the control group and 1,84 % higher than in the 2nd experimental group. The weight of eggs of laying hens of the 1st experimental group was 1,85 g or 2,97 % more, and the 2nd experimental group was 0,7 g or 1,12 % more than in the control group. The diff erence between the egg weight in laying hens of the 1st and 2nd experimental groups was 1,85 % or 1,15 g. The lowest feed consumption of 1,37 kg for the production of 10 eggs was in the laying hens of the 1st experimental group, which was less than the indicator of the control group by 10,94 and by 4,2 % than in the 2nd experimental group.

Supplementation of organic minerals and its effect on production performance and egg quality of laying hens

2020 ◽  
pp. 12-16
Keyword(s):  
Feed Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Production Performance ◽  
Control Group ◽  
Adaptation Period ◽  
Egg Shell ◽  
Organic Minerals

The present study was conducted to find the effect of different levels of organic minerals on egg production and egg quality of laying hens. A total of 45 laying hens were selected and divided into three groups with 3 replicates of 5 birds each. The control group was provided with commercial ration having inorganic minerals and the other two groups were supplemented with organic minerals at the rate of 7.5 (OM-50) and 15 mg/kg (OM-100). The experiment lasted for 5 weeks including 1 week of adaptation period. Overall feed intake was significantly higher (P<0.05) in the control. Significantly lower feed intake was recorded in group OM-100. Numerically lower (better) FCR was recorded in OM-100 at all recorded stages. Significantly (P<0.05) higher egg weight, egg shell weight and egg shell thickness was found in OM-100 compared to the control. Similarly, albumin height, Haugh unit and yolk weight were significantly (P<0.05) higher in M-100. It was concluded from the present results that organic minerals at the level of 50 and 100 mg/kg improved the performance and egg quality of laying hens. However, better results were found in OM-100.

Effect of Bacillus subtilis KATMIRA1933 and Bacillus amyloliquefaciens B-1895 on the productivity, reproductive aging, and physiological characteristics of hens and roosters

2019 ◽  
Vol 10 (4) ◽  
pp. 395-412 ◽  
Author(s):  
E.V. Prazdnova ◽  
M.S. Mazanko ◽  
V.A. Chistyakov ◽  
Y.V. Denisenko ◽  
M.S. Makarenko ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Bacillus Amyloliquefaciens ◽  
Biochemical Parameters ◽  
Egg Production ◽  
Laying Hens ◽  
Live Weight ◽  
Production Quality ◽  
Control Group ◽  
Reproductive Aging

The study aims at investigating the effect of preparations of two bacilli strains on laying hens and roosters. Preparations were based on the strains Bacillus subtilis KATMIRA1933 and Bacillus amyloliquefaciens B-1895. Several groups of roosters and hens received a preparation based on either strain, or a mixture of both, from the first day to the last day of poultry in production. These preparations improved egg production, quality of sperm production, quality/hatchery of eggs, and slowed down the reproductive aging of hens. These observations were confirmed by the mathematical model proposed herein. At the molecular level, the slowing down of aging was confirmed by a decrease in the amount of mitochondrial DNA damage. Monitoring the physiological parameters of the experimental and control groups of birds showed that live weight gain in all experimental groups was higher than in the control group, and the reproductive organs of hens were more developed. There was also an improvement in the biochemical parameters of blood, the quality of the sperm of roosters, the laying of laying hens, and the morphological and biochemical parameters of the eggs. One of the most significant results is an increase in egg fertilization and a decrease in embryo death during the first 7 days of incubation.

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