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Bones quality indices in laying hens fed diets with a high level of DDGS and supplemented with selected feed additives
layers distillers dried gains with solubles feed supplements
2015/7/3
An experiment with 192 caged ISA Brown laying hens, fed a diet containing a high level of corn distillers dried grains with solubles (DDGS), was conducted to determine the influence of selected feed a...
Effects of feed supplementation with manganese from its different sources on performance and egg parameters of laying hens
manganese chelates layers egg quality
2015/7/3
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. N...
Effects of laying hens housing system on laying performance, egg quality characteristics, and egg microbial contamination
cage aviary litter egg production
2015/7/2
The objective of this study was to compare the performance, egg quality, and microbial contamination of egg shells from hens maintained in different housing systems, such as conventional and enriched ...
Effect of hen age, environmental temperature, and oviposition time on egg shell quality and egg shell and serum mineral contents in laying and broiler breeder hens
egg mineral composition serum minerals
2015/7/2
The aim of the study was to evaluate egg shell quality characteristics, mineral content in the egg shell, and serum mineral concentration during the egg formation process as influenced by oviposition ...
Investigation of the effect of probiotics and potentiated probiotics on productivity of laying hens
laying hen probiotic potentiated probiotic
2015/6/8
Probiotic bacteria are used to balance a disturbed intestinal microflora and dysfunctions of the gastrointestinal tract (GIT). They could be an effective alternative to the use of synthetic substances...
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)...
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...
The effects of dietary garlic powder on performance, egg yolk and serum cholesterol concentrations in laying quails
garlic powder laying quail laying performance egg traits serum parameters
2015/6/8
This study was conducted to investigate the effects of garlic powder on the performance, egg traits, egg cholesterol and serum parameters of laying Japanese quails. One hundred and twenty 10-weeks-old...
Laying pattern parameters in broiler breeder hens and intrasequence changes in egg composition
broiler breeder hens egg sequence laying pattern egg composition
2015/6/8
The aim of the study was to analyze the pattern of oviposition time in laying sequences in broiler breeder hens and to determine a relationship between egg position in the sequence and egg quality. Th...
Effect of different phosphorus levels on the performance and egg quality of laying hens fed wheat- and maize-based diets
available phosphorus brown-egg laying hen wheat maize
2015/6/8
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...
The effect of digitonin on egg quality, cholesterol content in eggs, biochemical and haematological parameters in laying hens
digitonin egg weight lipid metabolism egg cholesterol blood picture
2015/6/5
The aim of the present study was to describe the effect of digitonin on egg quality, cholesterol content in eggs, some parameters of serum lipid metabolism and blood picture of laying hens. The experi...
Defective eggs and their relationship to egg yield, egg and body weight in hens of five original laying lines
hens cracked eggs double-yolk eggs
2015/6/5
We investigated 3 985 individually housed hens of five original laying lines of two breeds RIR and BPR. The proportion of abnormal eggs out of the eggs laid before the age of 240 days ranged between 7...
Heritability of egg production in laying hens under cumulative, multitrait and repeated measurement animal models
egg production laying hens cumulative model monthly records
2015/6/4
Six generations of three layer lines (13 770 recorded individuals of A22 line, 13 950 of A88, 9 351 of K66) were used to estimate genetic effects on egg production under cumulative, multitrait and rep...
Supplemental wheat bran and microbial phytase could replace inorganic phosphorus in laying hen diets
wheat bran phytase laying hens production performance nutrient utilization
2015/6/4
An experiment was conducted to determine effects of wheat bran (WB) phytase on production performance and nutrient utilization in laying hens. Three hundred and seventy-five Lohmann hens at 32 weeks o...
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...