this experiment was conducted to evaluate the effects of vitamin c on laying hens performance, egg characteristics and some blood parameters under normal rearing condition. one hundred and ninety two 24 - weeks - old laying hens diet were used in a completely randomized design with 4 treatments (0, 250, 500 and 750 mg vitamin c/kg diet) and 4 replicates for 105 days. although feed consumption, ...

Seventy Brown-Nick laying hens (39-wk old) were divided into 5 treatment groups of similar mean body weight and egg production, comprising 14 birds in each. The housed individual cages a completely randomized design 16:8 h light:dark photoperiod was employed. fed standard layer diets containing different levels lutein for 6 weeks. Treatment included control (without lutein), 100, 200, 400 800 p...

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...

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 ...

This study examined the comparative utilization of 30% inclusion levels of three vegetable protein sources [Groundnut Cake (GNC); Soybean Meal (SBM) and Cotton Seed Cake (CSC)] in the diets of growing and laying Japanese quails. The findings showed no significant variations (P>0.05) on feed intake, weight gain and feed/gain ratio during the growing period among the vegetable protein sources fed...