scholarly journals Relationship of Mouth Lesions to Eggshell Quality of Commercial Laying Hens

1992 ◽  
Vol 1 (2) ◽  
pp. 251-257
Author(s):  
Jesse L. Grimes ◽  
William C. Bridges
Keyword(s):  
Laying Hens ◽  
Eggshell Quality ◽  
Relationship Of

scholarly journals Combined Effect of Genotype, Housing System, and Calcium on Performance and Eggshell Quality of Laying Hens

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2120
Author(s):  
Mohamed Ketta ◽  
Eva Tůmová ◽  
Michaela Englmaierová ◽  
Darina Chodová
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Quality Parameters ◽  
Housing System ◽  
Individual Factor ◽  
Eggshell Quality ◽  
Factor Effect ◽  
Quality Response ◽  
Floor System

The objective of this study was to evaluate hen performance and eggshell quality response to genotype, housing system, and feed calcium (Ca) level. For this purpose, an experiment was conducted on 360 laying hens of ISA Brown, Bovans Brown (commercial hybrids), and Moravia BSL (traditional Czech hybrid). Laying hens were kept in enriched cages and on littered floor and fed similar feed mixtures with different Ca content (3.00% vs. 3.50%). In terms of hen performance, ISA Brown had the highest egg production (84.2%) compared to Moravia BSL (74.3%) and Bovans Brown (71.4%). Regarding eggshell quality, Bovans Brown showed the highest values of all eggshell quality parameters. Increasing feed Ca level augmented egg production (p ≤ 0.001) but had no effect on other performance parameters. Except eggshell thickness, all eggshell quality parameters were affected by the three-way interaction of genotype, housing, and Ca. Bovans Brown, which had the strongest eggshells (5089 g/cm2) when housed on a littered floor system and fed 3.00% Ca, while Moravia BSL housed on a littered floor had the weakest eggshells (4236 g/cm2) at 3.50% Ca. The study pointed out the importance of the interactions between studied factors on performance and eggshell quality compared to an individual factor effect.

The paradoxical effects of progesterone on the eggshell quality of laying hens

2020 ◽  
Vol 209 (2) ◽  
pp. 107430
Author(s):  
Jiacai Zhang ◽  
Zhiyun Wang ◽  
Xu Wang ◽  
Lvhui Sun ◽  
Shahid Ali Rajput ◽  
...  
Keyword(s):  
Laying Hens ◽  
Eggshell Quality ◽  
Paradoxical Effects

scholarly journals Carbonated Drinking Water for Improvement of Eggshell Quality of Laying Hens During Summertime Months

1992 ◽  
Vol 1 (2) ◽  
pp. 194-199 ◽  
Author(s):  
Ken W. Koelkebeck ◽  
Paul C. Harrison ◽  
Carl M. Parsons ◽  
George R. McCain
Keyword(s):  
Drinking Water ◽  
Laying Hens ◽  
Eggshell Quality

scholarly journals Dietary chloride levels affect performance and eggshell quality of laying hens by substitution of sodium sulfate for sodium chloride

2020 ◽  
Vol 99 (2) ◽  
pp. 966-973
Author(s):  
Jing Wang ◽  
Hai-jun Zhang ◽  
Shu-geng Wu ◽  
Guang-hai Qi ◽  
Li Xu ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Sodium Sulfate ◽  
Laying Hens ◽  
Eggshell Quality

scholarly journals Effects of dietary Bacillus subtilis supplementation and calcium levels on performance and eggshell quality of laying hens in the late phase of production

2020 ◽  
Author(s):  
Jing Wang ◽  
Wei-wei Wang ◽  
Guang-hai Qi ◽  
Chuang-fei Cui ◽  
Shu-geng Wu ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Laying Hens ◽  
Late Phase ◽  
Eggshell Quality
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