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Effect of dietary magnesium,calcium,phosphorus,and limestone grain size on productive performance and eggshell quality of hens
magnesium oxide limestone granularity mixed feed Ca : NPP ratio egg shell strength layers
2016/11/11
Two experiments conducted on laying hens, aged 50 and 52 weeks, were carried out to evaluate the effect of dietary Mg and its relationship to the Ca : NPP (non-phytate phosphorus) ratio using a variou...
Effects of Dietary Calcium Levels on Productive Performance, Eggshell Quality and Overall Calcium Status in Aged Laying Hens
Dietary Calcium Levels Cracked Eggs Eggshell Strength Tibial Breaking Strength
2016/11/10
This study was conducted to investigate the effects of diets with varying levels of calcium on egg production, shell quality and overall calcium status in aged laying hens. A total of five hundred 70-...
Effects of phytase B on laying performance, eggshell quality and on phosphorus and calcium balance in laying hens fed phosphorus-deficient maize-soybean meal diets
phytase B laying hen laying performance eggshell quality retention of P and Ca
2015/6/9
A study was conducted to evaluate the effects of dietary supplementation of phytase B (product of the Aspergillus niger phyB gene expressed in Trichoderma reesei) on feed intake, laying performance, e...
Eggshell quality and calcium utilization in feed of hens in repeated laying cycles
laying hens forced moulting repeated laying cycle eggshell quality calcium
2015/6/8
Hens of the laying hybrid Shaver Starcross 288 were used in two consequential experiments. The first experiment (for 10 months) was conducted on hens at the age from 18 to 60 weeks (1st cycle; n = 50)...
The influence of housing systems on the air quality and bacterial eggshell contamination of table eggs
conventional cage system aviary air hygiene eggshell microorganisms
2015/6/8
This paper compares two different housing systems for laying hens producing table eggs, namely a conventional cage system and an aviary, during three summer months, starting from the 20th week of the ...
Laying performance and eggshell quality in laying hens fed diets supplemented with prebiotics and organic acids
laying hens egg production eggshell quality organic acids prebiotic fructans
2015/6/8
The aim of the study was to evaluate the effect of organic acids and the prebiotic fructans on egg production and eggshell quality when added to the layer diet with different levels of calcium and pho...
Effect of housing system on the calcium requirement of laying hens and on eggshell quality
enriched cage unenriched cage floor system eggshell production Ca requirement
2015/6/5
The effects of housing systems on the calcium requirement for eggshell production, eggshell quality and on the breaking strength of the hen’s tibia were evaluated. Unenriched cages (UN) (24 laying hen...
The effects of a higher amount of iodine supplement on the efficiency of laying hens fed extruded rapeseed and on eggshell quality
egg mass feed:egg mass ratio
2015/6/1
The objective of this experiment was to study the effects of feeding 6.07 mg/kg of iodine in comparison with 3.57 mg/kg of iodine as a supplement in diets with different levels of extruded rapeseed (4...
Effects of Dietary Corticosterone on Yolk Colors and Eggshell Quality in Laying Hens
Laying Hens Egg Quality Stress Corticosterone Yolk Colors Shell Thickness
2016/5/18
The objective of this study was to investigate the effects of dietary corticosterone on egg quality. For 2 weeks hens received either control or experimental diet containing corticosterone at 30 mg/kg...
Effects of Dietary Fe-soy Proteinate and MgO on Egg Production and Quality of Eggshell in Laying Hens
MgO Fe-soy Proteinate Eggshell Quality Layer Hemoglobin
2016/5/5
This study investigated the effects of Fe-soy proteinate (Fe-SP) and magnesium oxide (MgO) dietary supplements on eggshell quality in laying hens. A total of 800 26-wk-old Hy-Line Brown hens were assi...
Avian Somitic Cell Chimeras Using Surrogate Eggshell Technology
Embryo Chick Transgenic eGFP
2016/4/27
A classical technique to study somitic cell fate is to employ the cross-transplantation of quail somites into a chick host. The densely stained nucleoli of the quail cells makes it possible to assess ...
Long-term application of clinoptilolite via the feed of layers and its impact on the chemical composition of long bones of pelvic limb (femur and tibiotarsus) and eggshell
Zeofeed crude protein ash
2015/3/17
Selected 120 layers, hybrid breed Bovans Goldline, were divided into two balanced groups: control
(C) and experimental (E) group. The layers were raised in three-floor cage technology with automatic...
EGGSHELL AND EGG CONTENT TRAITS IN PEKING DUCK EGGS FROM THE P44 RESERVE FLOCK RAISED IN POLAND
duck egg albumen yolk
2010/12/3
The egg quality of Peking ducks was evaluated on three different dates (the beginning, peak, end) of the first egg laying period. During the laying period the following increases were noted: in egg we...
Effects of Various Eggshell Treatments on the Egg Quality during Storage
Sanitized and Coated Egg Weight Change Yolk Index Albumen Index Haugh Unit
2016/4/13
The combined effects of washing, sanitization and coating of eggshell on the physical and microbiological quality during storage were evaluated at 4째 and 30째C. The interior qualities of ...
The Role of Magnesium and Calcium in Eggshell Formation in Tsaiya Ducks and Leghorn Hens
Calcium Magnesium Eggshell Tsaiya Duck Leghorn Hen
2016/4/12
Tsaiya ducks and Leghorn hens are the two major laying birds raised in Taiwan. They are all excellent egg layers. Tsaiya ducks are small in body size (1.3 kg) with bigger egg weight (65 g) and stronge...