Daily rhythm of corticosterone in laying hens and the influence of egg laying

Interactive Influence of Formycine® Gold and Pigment on Egg Quality and Performance of Laying Hens

Sodium bentonite can bind to dietary pigment and decreases yolk color scale. Sodium bentonite is one of the main parts of Formycine® Gold, the effect of different levels of Formycine® Gold and dietary pigment on egg quality, egg yolk color and performance criteria of laying hens from 26 to 34 week of age were studied. One hundred ninety two Hy-Line hens were divided into 24 groups of 8 birds ea...

Effects of laying hens housing system on laying performance, egg quality characteristics, and egg microbial contamination

The objective of this study was to compare the performance, egg quality, and microbial contamination of egg shells from hens maintained in different housing systems, such as conventional and enriched cages, litter, and aviaries. The housing system significantly (P < 0.001) influenced the performance characteristics. The highest egg production, lowest daily feed consumption, and feed conversion ...

Influence of combined usage of garlic powder and copper on egg yolk cholesterol concentration in laying hens

Laying Performance and Egg Quality of Hens Supplemented with Sodium Bicarbonate During the Late Laying Period

This study was conducted to determine effects of dietary NaHCO supplementation on egg 3 production and egg quality during the late laying period. Hisex Brown layers, 54 wks of age, were blocked according to the cage location and then assigned randomly to receive one of four diets containing 0, 0.1, 0.2, or 0.4% NaHCO for 75 d. Each diet was replicated in 6 groups; each consisting of 2 cages con...

Effects of Green Tea Powder on Laying Performance and Egg Quality in Laying Hens

This experiment was carried out to evaluate the effects of feeding green tea powder on laying performance and egg quality in hens. A total 180 “Tetran Brown” laying hens aged 40 weeks were assigned to 6 treatments in a completely randomized design. Each treatment consisted of five replicates accommodating six layers per replication. The experimental diets were a negative control containing no g...