Effect of different light sources on performance and egg quality traits in laying hens

2015 ◽  
Author(s):  
S. Kamanli ◽  
I. Durmus ◽  
S. Demir ◽  
B. Tarim
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Light Sources ◽  
Quality Traits

scholarly journals Influence of the energy and digestible lysine contents of the diet on performance and egg quality traits of brown-egg laying hens from 19 to 59 weeks of age

2021 ◽  
pp. 101211
Author(s):  
R. Scappaticcio ◽  
J. Garcia ◽  
G. Fondevila ◽  
A.F. de Juan ◽  
L. Cámara ◽  
...  
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Egg Laying ◽  
Quality Traits

scholarly journals The effects of space allowance on egg yield, egg quality and plumage condition of laying hens in battery cages

2008 ◽  
Vol 53 (No. 8) ◽  
pp. 345-353 ◽  
Author(s):  
M. Sarica ◽  
S. Boga ◽  
U.S. Yamak
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Stocking Density ◽  
Experimental Period ◽  
Egg Mass ◽  
Quality Traits ◽  
Body Parts ◽  
Battery Cages ◽  
And Performance

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 divided into four cage density groups. The densities were 2 000, 1 000, 667 and 500 cm<sup>2</sup> per hen (by allocating 1, 2, 3 and 4 hens per cage; floor area 40 × 50 cm) with 48, 30, 24 and 21 replicate cages, totally 123 three-tier battery cages. During the experimental period from 18 to 53 weeks of age, all birds were provided illumination for 16 hours a day. The hens were fed a diet containing 11.7 MJ ME/kg and 180 g CP during the period of 18 to 40 weeks of age and 11.3 MJ ME/kg and 170 g CP during the period of 41 to 54 weeks of age. Feed and water were available for <I>ad libitum</I>. Egg yield, mortality, live weights at 50% egg production age and at the end of experiment, pecking related mortalities, some egg quality traits and plumage condition were recorded weekly. Hen-housed egg production, egg mass, viability, and live weights were significantly decreased by higher densities. Most of the egg quality traits were not affected by cage densities. Pecking related mortalities increased in cage densities of 667 cm<sup>2</sup> and 500 cm<sup>2</sup> per hen compared to the other densities (<I>P</I> < 0.05) while plumage scores were higher in all body parts of hens kept in cages of 2 000 cm<sup>2</sup> and 1 000 cm<sup>2</sup> densities compared to the higher densities. The results showed that brown laying hens should be kept in cages having 1 000–2 000 cm<sup>2</sup> densities in order to improve their welfare and performance.

Inclusion of Garlic (Allium Sativum.) and Turmeric (Curcuma longa L.) powder to laying hens’ diets on egg quality traits, bacterial population and intestinal histomorphology

2019 ◽  
Vol 22 (12) ◽  
pp. 231-240
Author(s):  
Baraa H. Mousa ◽  
Ahlam M. Awad ◽  
Hebat-Alla A.A. Alhamdani ◽  
Husam.H. Nafea ◽  
Adel A. Alhamdani
Keyword(s):  
Bacterial Population ◽  
Allium Sativum ◽  
Laying Hens ◽  
Egg Quality ◽  
Curcuma Longa ◽  
Quality Traits

scholarly journals Monochromatic light-emitting diode (LED) source in layers hens during the second production cycle

2015 ◽  
Vol 19 (9) ◽  
pp. 877-881 ◽  
Author(s):  
Rodrigo Borille ◽  
Rodrigo G. Garcia ◽  
Irenilza A. Nääs ◽  
Fabiana R. Caldara ◽  
Mayara R. Santana
Keyword(s):  
Light Source ◽  
Laying Hens ◽  
Egg Quality ◽  
Monochromatic Light ◽  
Latin Square ◽  
Continuous Illumination ◽  
Production Cycle ◽  
Light Sources ◽  
Light Regimen ◽  
The Impact

ABSTRACTLight is an important environmental factor for birds, allowing not only their vision, but also influencing their physiological responses, such as behavioral and reproductive activity. The objective of this experiment was to evaluate the impact of different colors of monochromatic light (LED) sources in laying hens production during the second laying cycle. The study was conducted in an experimental laying house during 70 days. A total of 300 laying hens Isa Brown® genetic strain, aged 95 weeks, in the second laying cycle were used in the study. The artificial light sources used were blue, yellow, green, red and white. The light regimen was continuous illumination of 17 h per day (12 h natural and 5 h artificial) in a daily light regimen of 17L:5D (light: dark). The Latin Square design was adopted with five treatments (five colors) divided into five periods, and five boxes, with six replicates of ten birds in each box. The production and egg quality were evaluated. The different colors of light source did not affect production parameters or egg quality (p > 0.05). The monochromatic light source may be considered as an alternative to artificial lighting in laying hens during the second production cycle.

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