scholarly journals The Effect of Different Levels of Vitamin C and Cholecalciferol with Adequate or Marginal Levels of Dietary Calcium on Performance and Eggshell Quality of Laying Hens

1996 ◽  
Vol 75 (10) ◽  
pp. 1227-1235 ◽  
Author(s):  
K. KESHAVARZ
Keyword(s):  
Vitamin C ◽  
Laying Hens ◽  
Dietary Calcium ◽  
Eggshell Quality ◽  
Different Levels

Reproductive efficiency and egg and larvae quality of Nile tilapia fed different levels of vitamin C

Aquaculture ◽  
2018 ◽  
Vol 482 ◽  
pp. 96-102 ◽  
Author(s):  
Nilda L.A.F. Sarmento ◽  
Edenilce F.F. Martins ◽  
Deliane C. Costa ◽  
Cristiano C. Mattioli ◽  
Gustavo S. da Costa Julio ◽  
...  
Keyword(s):  
Vitamin C ◽  
Nile Tilapia ◽  
Reproductive Efficiency ◽  
Different Levels

scholarly journals Bone quality of laying hens fed different levels of fiber in the growth phase (7 to 17 weeks of age)

2012 ◽  
Vol 41 (9) ◽  
pp. 2032-2038 ◽  
Author(s):  
Carlos Eduardo Braga Cruz ◽  
Ednardo Rodrigues Freitas ◽  
Nadja Naiara Pereira Farias ◽  
Regina Patrícia de Souza Xavier ◽  
Jayron dos Santos Correia Lima ◽  
...  
Keyword(s):  
Bone Quality ◽  
Growth Phase ◽  
Laying Hens ◽  
Different Levels

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.

scholarly journals Effect of Barley Containing Different Levels of Anthocyanin on the Performance and Egg Quality of Laying Hens

2013 ◽  
Vol 23 (2) ◽  
pp. 237-241
Author(s):  
Ho Seong Choe ◽  
Tae Hwa Song ◽  
Ouk Kyu Han ◽  
Tae Il Park ◽  
Kyeong Seon Ryu
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Different Levels

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
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