Effects of different housing systems on visceral organs, serum biochemical proportions, immune performance and egg quality of laying hens

The aim was to assess the internal and external quality of consumer eggs of egg‑laying hens of two selected genotypes depending on their age. All of these hens were kept in enriched cages. There were compared eggs from Hy‑Line Brown and ISA Brown hens at the age from 36 to 64 weeks. In total, 3840 eggs from 300 hens were evaluated. Quality of eggs was determined by their technological value. Statistically significant interactions (P = 0.001) between age and genotype were found in all evaluated parameters except for the yolk colour (P = 0.044), whereas there was not found interaction (P = 0.072) between age and genotype in eggshell strength. The significant effect of hens’ age was found in all evaluated parameters, with the only exception of the yolk colour. The results showed that the average weight of eggs, eggshell, albumen and yolk increased with the age. Also the eggshell proportion, its colour and yolk index values increased, whereas the egg shape index, eggshell thickness and strength, albumen proportion, Haugh units, the albumen and the yolk index decreased. Statistically significant effect of the genotype was found in all evaluated parameters except for the yolk index. When comparing both genotypes, the eggs from ISA Brown hens had a better quality. The trend of deteriorating egg quality with age was confirmed.

Download Full-text

Effects on egg production and quality of supplementing drinking water with calcium and magnesium

South African Journal of Animal Science ◽

10.4314/sajas.v51i4.7 ◽

2021 ◽

Vol 51 (4) ◽

pp. 469-476

Author(s):

X.J. Yi ◽

A. Rehman ◽

R.W. Akhtar ◽

A. Abbas ◽

K. Hussain ◽

...

Keyword(s):

Drinking Water ◽

Egg Production ◽

Laying Hens ◽

Egg Quality ◽

Production Performance ◽

Egg Weight ◽

Calcium And Magnesium ◽

Eggshell Colour ◽

Haugh Unit

This study was conducted to appraise the effects on egg quality and production performance of laying hens when drinking water was supplemented with calcium (Ca) and magnesium (Mg). A total of 384 (64-week-old) Hy-line Brown laying hens were assigned at random to four treatments, which consisted of CON: unsupplemented drinking water; T1: drinking water + 2 mg/L Ca + 250 mg/L Mg; T2: drinking water + 4 mg/L Ca + 510 mg/L Mg /10 L; and T3: drinking water + 5 mg/L Ca and 760 mg/L Mg. The experiment lasted six weeks. Water intake increased linearly in week 1 with the rising levels of Ca and Mg in the drinking water. Increasing the Ca and Mg levels improved eggshell strength (week 2 (P =0.01), week 5 (P =0.01), and week 6 (P = 0.03), and eggshell thickness (week 6) (P =0.02) and reduced the rate at which eggs were broken (week 4) (P =0.01). The supplemental Ca and Mg did not affect egg production, egg weight, Haugh unit, albumen height, eggshell colour, and yolk colour compared with CON. Nor did they influence the Haugh unit and albumen height after storing for 1, 5, 10 and 15 days. In conclusion, adding Ca and Mg to the drinking water increased the thickness and strength of the eggshells.

Download Full-text

The effect of additional turmeric flour in rations on the performance and egg quality of laying chicken isa brown strain age 70th weeks

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/888/1/012054 ◽

2021 ◽

Vol 888 (1) ◽

pp. 012054

Author(s):

A Jaelani ◽

N Abelina ◽

R Samudera ◽

T Rostini ◽

Masganti ◽

...

Keyword(s):

Research Method ◽

Laying Hens ◽

Egg Quality ◽

Egg Mass ◽

Feed Conversion ◽

Unit Value ◽

Randomized Design ◽

Completely Randomized Design ◽

Haugh Unit

Abstract This research aims to study and analyze the effect of adding turmeric flour (Curcuma domestica Val) in the rations on the performance of 70 weeks old Isa Brown strain of laying hens. The research method used in this study was an experimental method with a completely randomized design (CRD) step with five treatments and four replications. The number of chickens used was as many as 40 laying hens. The treatments given to the sample were P0 = feed without giving turmeric flour (control), P1 = feed with 0.3% turmeric flour, P2 = feed with 0.5% turmeric flour, P3 = feed with 0.7% turmeric flour and treatment P4 = feed by giving turmeric flour 0,9%. The results showed that giving turmeric flour in the rations of the Isa Brown strain of laying hens affected chicken performance and egg quality. This research concludes that giving turmeric flour a percentage of 0.7% in Isa Brown’s 70-week old laying hens is the best for ration consumption, Hen Day Production, egg weight, feed conversion, and egg quality: Haught Unit, yolk egg color, yolk egg index, grading egg and egg mass. Based on the haugh unit value, all eggs produced are still in the AA grade category

Download Full-text

Effects of Boiled Tomato Waste Utilization in the Diet on Serum Lipid Profile and Egg Quality of Laying-hens

International Journal of Poultry Science ◽

10.3923/ijps.2016.493.496 ◽

2016 ◽

Vol 15 (12) ◽

pp. 493-496 ◽

Cited By ~ 3

Author(s):

Maria E. Mahata ◽

Yose Rizal ◽

Ardi . ◽

Dedek Hermansyah ◽

Gina A. Nurhuda

Keyword(s):

Lipid Profile ◽

Serum Lipid ◽

Laying Hens ◽

Egg Quality ◽

Waste Utilization ◽

Serum Lipid Profile ◽

Tomato Waste

Download Full-text

The Effect of the Type of Alternative Housing System, Genotype and Age of Laying Hens on Egg Quality

Annals of Animal Science ◽

10.2478/aoas-2018-0004 ◽

2018 ◽

Vol 18 (2) ◽

pp. 541-556 ◽

Cited By ~ 9

Author(s):

Zofia Sokołowicz ◽

Józefa Krawczyk ◽

Magdalena Dykiel

Keyword(s):

Laying Hens ◽

Egg Quality ◽

Housing System ◽

Color Intensity ◽

Egg Weight ◽

Blood Spots ◽

Alternative Housing ◽

Housing Systems ◽

System Type ◽

Eggshell Color

Abstract The present study investigated the effect of the type of alternative housing system, and genotype and age of laying hens on physical traits of egg shell and contents. It was demonstrated that alternative housing system type influenced egg weight and shape, and eggshell color and yolk color intensity. Eggs from free-range system were heavier and were characterized by more intense yolk color. No effect of alternative housing system type on albumen height, value of Haugh units (HU value) and presence of meat and blood spots was noted. Hen genotype had a significant effect on egg weight and eggshell color intensity in each of the alternative housing systems tested in this study. Hy-line Brown hens laid heavier eggs than hens of native breeds. Genotype was also observed to affect egg content traits (albumen height, HU values and presence of meat and blood spots). Independently of the type of alternative housing system, most blood and meat spots were noted in eggs of hens laying brown-shelled eggs, i.e. R-11 and Hy-line Brown layers. Laying hen age significantly impacted on egg weight, yolk percentage, eggshell traits (color intensity, weight, thickness and strength) and egg content traits (HU value, yolk weight and color intensity, presence of meat and blood spots). Older hens laid heavier eggs with a greater yolk percentage but with thinner eggshell.

Download Full-text

Limestone particle sizes and lighting regimens on egg and bone quality of laying hens

Pesquisa Agropecuária Brasileira ◽

10.1590/s0100-204x2015000800010 ◽

2015 ◽

Vol 50 (8) ◽

pp. 718-725 ◽

Cited By ~ 1

Author(s):

Regina Patrícia de Souza Xavier ◽

Ednardo Rodrigues Freitas ◽

Nádia Melo Braz ◽

Nadja Naiara Pereira Farias ◽

Raffaella Castro Lima ◽

...

Keyword(s):

Bone Quality ◽

Laying Hens ◽

Egg Quality ◽

Mineral Matter ◽

Artificial Light ◽

Particle Sizes ◽

Randomized Design ◽

Completely Randomized Design ◽

Haugh Unit

Abstract:The objective of this work was to evaluate the effect of limestone particle sizes in the diet and of lighting regimes on the egg and bone quality and on the performance of commercial laying hens. Three hundred Hissex White layers, at 18 weeks of age, were distributed in a completely randomized design, in a 5×2 factorial arrangement (coarse limestone in the diet at 0, 25, 50, 75, and 100%; with or without artificial light), with five replicates of six birds. No significant interaction was observed between particle sizes and lighting regime for the evaluated parameters. There was no significant effect of coarse limestone level in the diet on the performance and egg quality of hens; however, bone deformity (3.23 to 4.01 mm), strength (5.19 to 6.70 kgf cm-2), and mineral matter (51.09 to 59.61%) improved as the proportion of coarse limestone increased. For lighting regime, the treatment with artificial light yielded higher Haugh unit values (87.17 vs. 85.54) than that with natural light only. Greater limestone particles improve bone quality of laying hens, and the use of artificial light can benefit the albumen quality of the eggs.

Download Full-text