Effect of feeding black soldier fly pupa meal in the diet on egg production, egg quality, blood lipid profiles and faecal bacteria in laying hens

2017 ◽  
Author(s):  
Byung-Sung Park ◽  
Kyung-Hwan Um ◽  
Won-Keun Choi ◽  
Sang-O Park
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Blood Lipid ◽  
Lipid Profiles ◽  
Black Soldier Fly ◽  
Faecal Bacteria ◽  
Effect Of Feeding

Providing laying hens in group-housed enriched cages with access to barley silage reduces aggressive and feather-pecking behaviour

2016 ◽  
Vol 96 (2) ◽  
pp. 161-171 ◽  
Author(s):  
S.G. Johannson ◽  
C. Raginski ◽  
K. Schwean-Lardner ◽  
H.L. Classen
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Free Access ◽  
Feather Pecking ◽  
Nest Boxes ◽  
And Performance ◽  
Barley Silage ◽  
Effect Of Feeding ◽  
Bird Weight

Two trials were conducted to study the effect of feeding barley silage on the behaviour and performance of beak-trimmed laying hens. In each trial, 20 hens and 2 roosters were housed in each of eight group-housed enriched cages, with four cages provided a laying hen diet and four cages additionally given free access to barley silage. Egg production and quality, and hen behaviour were assessed throughout the trials (Trial One 20–30 weeks; Trial Two 19–28 weeks). Data were analysed using Proc Mixed of SAS 9.4 and differences were significant when P ≤ 0.05. Silage-fed hens consumed 41 (13.9 g DM) and 50 (13.5 g DM) grams of silage per hen per day in Trials One and Two, respectively, while consuming less layer diet. Birds fed silage spent less time expressing aggressive and feather-pecking behaviours and in nest boxes, and more time feeding than control birds. Egg production, egg quality, and bird weight were not affected by treatment; yolk colour was darker for the silage treatment. Feathering quality was improved in silage-fed birds compared to control birds. It was concluded that providing hens with access to barley silage can improve welfare indicators without negatively affecting the egg production and egg quality.

scholarly journals Feeding live Black Soldier Fly larvae (Hermetia illucens) to laying hens: effects on feed consumption, hen health, hen behaviour and egg quality

2021 ◽  
pp. 101400
Author(s):  
Fernanda M. Tahamtani ◽  
Emma Ivarsson ◽  
Viktoria Wiklicky ◽  
Cecilia Lalander ◽  
Helena Wall ◽  
...  
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Feed Consumption ◽  
Black Soldier Fly ◽  
Hermetia Illucens ◽  
Black Soldier Fly Larvae ◽  
Fly Larvae

scholarly journals Research Note: Effect of Tu-Chung Leaf (Eucommia ulmoides) on Egg Production Performance, Egg Quality, and Fat Metabolism in Laying Hens at a Late Production Stage

1993 ◽  
Vol 72 (11) ◽  
pp. 2176-2179 ◽  
Author(s):  
T. MURAMATSU ◽  
K. ASAKURA ◽  
J. OKUMURA ◽  
S. TAKAHASHI ◽  
K. TOYOSHIMA ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Fat Metabolism ◽  
Research Note ◽  
Production Performance ◽  
Eucommia Ulmoides ◽  
Production Stage

scholarly journals Fish by-product meal in diets for commercial laying hens

2017 ◽  
Vol 39 (3) ◽  
pp. 273
Author(s):  
André Ferreira Silva ◽  
Frank George Guimarães Cruz ◽  
João Paulo Ferreira Rufino ◽  
Waldo Mateus Plácido Miller ◽  
Nathália Siqueira Flor ◽  
...  
Keyword(s):  
Production Cost ◽  
Egg Production ◽  
Laying Hens ◽  
Polynomial Regression ◽  
Egg Quality ◽  
Feed Conversion ◽  
Egg Weight ◽  
Feed Cost ◽  
Randomized Design ◽  
Completely Randomized Design

 This study aimed to evaluate the increasing levels (0, 1, 2, 3 e 4%) of fish by-product meal in diets for laying hens on performance, egg quality and economic analysis. A total of 160 Dekalb White hens with 52-wk old were distributed in a completely randomized design with five treatments and four replicates of eight birds each. The experiment lasted 84 days divided into four periods of 21 days. Estimates of fish by-product meal levels were determined by polynomial regression. Differences (p < 0.05) were detected for all variables of performance, in egg weight, yolk and albumen percentage, yolk and albumen height, feed cost and production cost, in which the inclusion of fish by-product meal in the diets showed better results. It can be concluded that fish by-product meal can be used in diets for hens as alternative feed, with better results in egg production, feed conversion, egg weight, yolk-albumen ratio and a reduction in feed cost and production cost. 

scholarly journals Effects of Dietary Delta-Aminolevulinic Acid on Egg Production and Egg Quality in Laying Hens

2007 ◽  
Vol 34 (3) ◽  
pp. 181-185
Author(s):  
J.W. Hong ◽  
S.O. Shin ◽  
J.H. Cho ◽  
Y.J. Chen ◽  
J.S. Yoo ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Aminolevulinic Acid

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

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.

scholarly journals Effect of Feeding Vegetable Waste on Egg Quality and Production Rate of Laying Hens.

1995 ◽  
Vol 32 (5) ◽  
pp. 363-369
Author(s):  
Yoshihisa YAMAGAMI ◽  
Kenji SASAGO
Keyword(s):  
Production Rate ◽  
Laying Hens ◽  
Egg Quality ◽  
Vegetable Waste ◽  
Effect Of Feeding
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