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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-...
Effect of Dietary Supplementation of Red Ginseng By-product on Laying Performance, Blood Biochemistry, Serum Immunoglobulin and Microbial Population in Laying Hens
Red Ginseng By-product, Laying Hen Laying Performance Serum Cholesterol
2016/11/10
This study was carried out to investigate the effect of dietary supplementation of red ginseng by-product (RGB) on the laying performance, blood biochemistry, and microbial population in laying hens. ...
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...
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...
Effects of differences in the initial body weight of groups on laying performance and egg quality parameters of Lohmann laying hens
body weight laying hen laying performance egg quality traits
2015/6/5
This study was carried out to investigate the effect of different body weight groups (light (L) = 1 400–1 500; medium (M) = 1 500–1 600 and heavy (H) = 1 600 < g) on performance and egg quality traits...
The effects of space allowance on egg yield, egg quality and plumage condition of laying hens in battery cages
cage space allowance egg yield feather score plumage condition mortality egg quality
2015/6/5
This study was conducted to investigate the effects of cage stocking density on egg yield, some egg quality traits and plumage condition in laying hens. Eighteen weeks-old 264 ISA-Brown pullets were d...
Emission of materials of biological origin in laying hens houses with different technologies of rearing
laying hens poultry houses ammonia nitrogen emission air pollution
2015/6/2
The aim was to determine the conversion of alimentary substances of laying hens (nitrogen, phosphorus, potassium) into the production of eggs and to determine the emission of nitrogen, air pollution b...
The quality comparison of eggs laid by laying hens kept in battery cages and in a deep litter system
laying hen rearing technology egg weight egg albumen weight yolk weight yolk cholesterol yolk colour shell strength
2015/6/2
At present the laying hen rearing is transformed into alternative housing systems which include a deep litter system. As for the poultry nutrition, the replacement of animal protein with vegetable pro...
Effect of Feeding Levels and Physical Activities on Heat Production in Laying Hens under Different Ambient Temperatures
heat production physical activity ambient temperature feeding level laying hen
2009/7/31
Eight Single Comb White Leghorn laying hens were used to investigate the effects of feeding levels (FL), ad libitum and 40% feeding, and physical activities on heat production (HP) under different amb...
Dietary L-Carnitine Supplementation Improves Albumen Quality of Laying Hens
L-carnitine albumen height haugh unit laying hens
2009/7/31
The effect of L-carnitine supplemented into a commercial diet on egg weight, albumen height, Haugh unit, yolk weight and albumen weight of eggs from laying hens was examined. The levels of dietary L-c...
Effects of Restricted Feeding Molt Diet on Induction of Molt and Energy Intake in Laying Hens
energy intake estradiol induced molting molt diet
2009/7/30
This experiment aimed to determine the effects of restricted feeding a molt diet on molt induction in laying hens. Single Comb White Leghorn hens (age, 61wk) were housed in individual cages and random...
Evaluation of Non-Feed Removal Induced Molting in Laying Hens
induced molting molt diet post-molt performance stress
2009/7/30
This study aimed to evaluate the effects of a molt diet on molt induction and the post-molt performance of laying hens. White Leghorn hens (age, 62wk) were randomly divided into three groups (two expe...
The Effect of Supplementation of Enzyme on Laying and Reproductive Performance in Japanese Quail Hens Fed Nigella Seed Meal
Japanese quail laying performance Nigella meal
2009/7/30
The effect of dietary enzyme (Optizyme) on the performance of Japanese quail hens fed isocaloric and isonitrogenous diets containing 0, 10, 20 and 30% of Nigella seed meal (NSM) as a protein source wa...
Effects of Additives on Laying Performance, Metabolic Profile, and Egg Quality of Hens Fed a High Level of Sorghum (Sorghum vulgare) during the Peak Laying Period
Laying Hen Sorghum Methionine Lysine Choline Sulfur
2016/4/21
This experiment was conducted to determine the effects of supplemental methionine, lysine, choline, and sulfur on laying performance, metabolic parameters, and egg quality of hens fed diets containing...
DRY BIOMASS OF FRESH WATER ALGAE OF CHLORELLA GENUS IN THE COMBINED FORAGES FOR LAYING HENS
Chlorella hen feeding egg qualities
2010/12/2
Dry biomass of algae is a good source of nutrients and biologically active substances, which in the last years attracted the interest of the specialists in their search for natural, ecologically and h...