Laying Hen
Concentrations and Settling Rates of Particulate Matter in Laying Hen Barns in the Hot Climatic Region of Cameroon
... emission factors have been established and mitigation strategies tested and proposed for European and North American production systems, such as oil/water application and changes in bedding material (Takai et al., 1996; ...
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Red crab (Pleuroncodes planipes) meal in laying hen rations and their effect on lipid fraction and oxidation of egg stored at different times and temperatures.
... the laying hen eggs has achieved great ...of laying hens can modify the concentration and quality of the lipid fraction of the egg, resulting in a product with added ...for laying hens in ...
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Evaluation of a laying-hen tracking algorithm based on a hybrid support vector machine
... quick movements were made. The method which was proposed by Kashiha [18] had a superior performance for tracking individual laying hens in an image area but was unable to identify and track an individual ...
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Age-related changes in the shell gland and duodenum in relation to shell quality and bone strength in commercial laying hen hybrids
... the laying hen, acting on organs such as intestine, shell gland, skeleton and kidney and exogenous oestrogen boosts calcium uptake by the duodenum in laying hens ...in laying hens at 82 weeks, ...
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Seasonal variations and spatial distribution of particulate matter emissions from a ventilated laying hen house in Northeast China
... corresponding indoor PM, as listed in Table 2, can partly reflect the amount of particle emitted from the laying hen house to the ambient atmosphere. The larger the value is, the bigger the percentage of PM ...
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Effect of a phytogenic feed additive on performance, ovarian morphology, serum lipid parameters and egg sensory quality in laying hen
... In conclusion, dietary supplementation of a phytogenic feed additive (including garlic, marigold, fennel seeds and thyme) could improve egg weight of laying hen. Anti- bacterial properties of this ...
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Economic analysis of different laying hen farm capacities in Turkey
... capacity laying hen farms in Afyon province, which have a considerable importance in the laying hen farming in Turkey, were compared in terms of performance, including feed consumption, ...
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Effect of Different Levels of Germinated Barley on Performance and Egg Quality in Laying Hen
... in laying hen. Methods: One hundred and twenty laying hens, 44-weeks old, Lohmann LSL hens were used in this ...of laying hens measured weekly, but biweekly for egg ...of laying hens ...
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Citation : Ketta M., Tumova E., Chodova D. (2019): Response of three laying hen genotypes to two feed calcium levels.
... observations were reported by Wu et al. (2007), Skrivan et al. (2018) and Chang et al. (2019), who found an improvement in internal egg quality mea- surements when a dietary Ca level was increased. These different ...
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The Ethics of Laying Hen Genetics
... for laying hen welfare has focused largely on conditions on- farm, such as the system of production (cage ...on laying hen welfare is clear, with strong genetic effects on traits including ...
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Supplemental wheat bran and microbial phytase could replace inorganic phosphorus in laying hen diets
... ABSTRACT: An experiment was conducted to determine effects of wheat bran (WB) phytase on production per- formance and nutrient utilization in laying hens. Three hundred and seventy-five Lohmann hens at 32 weeks of ...
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Eggshell Characteristics and Cuticle Deposition in Three Laying Hen Genotypes Housed in Enriched Cages and on Litter
... No significant effect of housing system on egg- shell thickness was detected in the present study (Table 1). These results are in agreement with Van Den Brand et al. (2004) who found no differences in eggshell thickness ...
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Consumer perception and communication on welfare in organic laying hen farming
... all laying hen farms in Belgium were registered as organic laying hen farm in ...registered hen places were registered as organic egg production (Pyfferoen et ...2011). Hen ...
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Performance of commercial laying hen genotypes on free range and organic farms in Switzerland, France and The Netherlands
... Egg production per hen housed at 60 weeks of age is related to mortality. Differences in production between countries, systems and genotypes follow almost completely differences in mortality. While the number of ...
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Effect of vegetable by-products on egg protein quality and coefficients of apparent absorption from laying hen diets
... The in vivo feeding trial was conducted on 6 weeks with 126 Tetra SL laying hens, 56-week old, assigned to 3 groups. The layers were housed in an experimental hall with controlled microclimate, in three-tier ...
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Effect of dietary sodium selenite, Se enriched yeast and Se enriched Chlorella on egg Se concentration, physical parameters of eggs and laying hen production
... Laying rate was high during the whole experiment (Table 4). It was the lowest in the sodium selenite group, but almost the same as in the basal diet. A sig- nificantly higher laying rate (P < 0.05) was ...
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Strategic Advances in Glycoproteomic Measurements by Mass Spectrometry and Applications in the Domestic Laying Hen.
... A substantial advantage of glycan analysis by capillary electrophoresis over liquid chro- matography is the compatibility of the separation with the native form of the glycan. Be- cause the separation still requires ...
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Prevalence of antibiotic resistance genes in faecal samples from cattle, pigs and poultry
... Since we initially expected that the antibiotic resistance genes targeted in real time PCR were commonly found in Enterobacteriales (Sunde and Norstrom 2006; Karczmarczyk et al. 2011; Soufi et al. 2011), enrichment of ...
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Evaluation of Dietary Hempseed and Hempseed Oil on Performance, Egg Quality and Some Blood Parameters in Laying Hens after Peak Period
... Similar to this finding, an increase in egg and yolk weights were found in birds fed high levels of HS or HO (Neijat et al., 2014). The increase in egg weight may be related to an enhancement of yolk weight (Johnston and ...
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Effect of Supplemental Oregano Essential Oils in Diets on Production Performance and Relatively Intestinal Parameters of Laying Hens
... in laying hens have not been thoroughly ...a laying hen feed supplement on the production per- formance, egg quality, cecal flora, morphological parameters, intestinal digestive en- zyme activities ...
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