Identification and solution of selected problems in hens nutrition and egg quality from contrast housing
Project no. QJ1310002
Category PROJEKTY NAZV / National Agency for Agricultural Research PROJECTS
Main author Pěchoučková (Skřivanová) Eva, prof. MVDr., Ph.D.
Provider | MZE ČR |
Description | 1. To determine optimal amount of phytase supplement of hens feed mixtures with different contents of total and available phosphorus. To reduce cost of inorganic phosphorus and phytase. To find out relationships between phosphorus, phytase and calcium in diets in relation to performance and safety of egg production. To determine whether microbial phytase changes environment of the digestive tract. 2. To replace synthetic kantaxanthin (EFSA count its on the potentially hazardous substances for humans) by natural sources of carotenoids. 3. To find out microbial contamination of eggs from different housing systems. |
Period | 2013 - 2017 |
Databse link (CZ) | QJ1310002 |
Natural sources of carotenoids in feed mixtures for hens
Effect of Housing System and Calcium Content on Eggshell Quality and Microbial Contamination of Eggs in Laying Hens
Effect of the source and level of carotenoids in diets on their retention in eggs
The source of selenium in mixed feed for hens and chickens
Effect of light colour on microbial contamination of air in hall and eggs of laying hens
Limestone particle size and Aspergillus niger phytase in the diet of older hens
The quality of eggs from different housing systems
Effect of increasing doses of marigold (Tagetes erecta) flower extract on eggs carotenoids content, colour and oxidative stability
Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hens
Egg quality in hens from different housing systems
Effect of housing system and age of laying hens on eggshell quality, microbial contamination, and penetration of microorganisms into eggs
Reducing of phosphorus concentration in mixed feed for hens in commercial husbandry
The effect of carotenoids on egg quality
The effect of phytase in feed mixtures for hens with low phosphorus content
The pasture of hens increases the vitamins and carotenoids content in eggs
Effects of a low-phosphorus diet and exogenous phytase on performance, egg quality, and bacterial colonisation and digestibility of minerals in the digestive tract of laying hens
Increase in lutein and zeaxanthin content in the eggs of hens fed marigold flower extract
The Mineral Content of Forage Affected by Previuos Grazing Intensity
Effect of Housing System and Calcium Content on Quality of Egg in Laying Hens
The Effect of Phytase Source and Limestone Particle Size on Performance and Egg Quality of Hens
Carotenoids and egg quality
Effects of laying hens housing system on laying performance, egg quality characteristics, and egg microbial contamination
Influence of animal age on body concentrations of minerals in Japanese quail (Coturnix japonica)
Carotenoids in Hen Diet
The deposition of carotenoids and alpha-tocopherol in hen eggs produced under a combination of sequential feeding and grazing
The effect of non-phytate phosphorus and phytase levels on performance, egg and tibia quality, and pH of the digestive tract in hens fed higher-calcium-content diet
A comparison of lutein, spray-dried Chlorella, and synthetic carotenoids effects on yolk colour, oxidative stability, and reproductive performance of laying hens
Effect of synthetic carotenoids, lutein, and mustard on the performance and egg quality
The effect of source of carotenoids in diet and cooking length on yolk color and egg quality of hens
The effect of dietary caprylic acid on bacterial shedding in chickens experimentally infected with Salmonella Enteritidis
The substitution of synthetic sources of carotenoids in mixed feed for hens
Effect of housing system and calcium content on quality of eggshells in laying hens
Changes in the quality of eggs during storage depending on the housing system and the age of hen
Combined Effect of Genotype, Housing System, and Calcium on Performance and Eggshell Quality of Laying Hens
Effect of Housing System and Calcium Content on Eggshell Quality and Microbial Contamination of Eggs in Laying Hens
Effect of the source and level of carotenoids in diets on their retention in eggs
The source of selenium in mixed feed for hens and chickens
Effect of light colour on microbial contamination of air in hall and eggs of laying hens
Limestone particle size and Aspergillus niger phytase in the diet of older hens
The quality of eggs from different housing systems
Effect of increasing doses of marigold (Tagetes erecta) flower extract on eggs carotenoids content, colour and oxidative stability
Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hens
Egg quality in hens from different housing systems
Effect of housing system and age of laying hens on eggshell quality, microbial contamination, and penetration of microorganisms into eggs
Reducing of phosphorus concentration in mixed feed for hens in commercial husbandry
The effect of carotenoids on egg quality
The effect of phytase in feed mixtures for hens with low phosphorus content
The pasture of hens increases the vitamins and carotenoids content in eggs
Effects of a low-phosphorus diet and exogenous phytase on performance, egg quality, and bacterial colonisation and digestibility of minerals in the digestive tract of laying hens
Increase in lutein and zeaxanthin content in the eggs of hens fed marigold flower extract
The Mineral Content of Forage Affected by Previuos Grazing Intensity
Effect of Housing System and Calcium Content on Quality of Egg in Laying Hens
The Effect of Phytase Source and Limestone Particle Size on Performance and Egg Quality of Hens
Carotenoids and egg quality
Effects of laying hens housing system on laying performance, egg quality characteristics, and egg microbial contamination
Influence of animal age on body concentrations of minerals in Japanese quail (Coturnix japonica)
Carotenoids in Hen Diet
The deposition of carotenoids and alpha-tocopherol in hen eggs produced under a combination of sequential feeding and grazing
The effect of non-phytate phosphorus and phytase levels on performance, egg and tibia quality, and pH of the digestive tract in hens fed higher-calcium-content diet
A comparison of lutein, spray-dried Chlorella, and synthetic carotenoids effects on yolk colour, oxidative stability, and reproductive performance of laying hens
Effect of synthetic carotenoids, lutein, and mustard on the performance and egg quality
The effect of source of carotenoids in diet and cooking length on yolk color and egg quality of hens
The effect of dietary caprylic acid on bacterial shedding in chickens experimentally infected with Salmonella Enteritidis
The substitution of synthetic sources of carotenoids in mixed feed for hens
Effect of housing system and calcium content on quality of eggshells in laying hens
Changes in the quality of eggs during storage depending on the housing system and the age of hen
Combined Effect of Genotype, Housing System, and Calcium on Performance and Eggshell Quality of Laying Hens
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