Estimated Daily Protein Requirements of Laying Hens

Protein and Energy Requirements of Laying Hens and Broiler Breeders

Layer and Breeder rations are still evaluated, as a rule, on the basis of their protein content, expressed as "percent protein". This is the easiest and most practical criterion, but unfortunately it is a relative measure, depending on general feed consumption. The latter hardly relates to the productive traits of the hen, being dependent primarily on the energy content of the feed and on the e...

Evaluation of Dietary Calcium Requirements in Fayoumi Laying Hens

The experiment was carried out in poultry experimental station belonging to NRC, Cairo, Egypt. A total of 120 Fayoumi layers, 45 weeks old, were randomly divided into four equal groups. Each group included three replicates (10 hens in each). The first group was fed the control diet containing 3.3% gram Ca, whereas, the other three received diets containing 2.8, 2.6 and 2.4% gram Ca, respectivel...

Comparison of two protein levels on laying hens performance

Sulfur amino acids requirements of laying hens in low protein diets

An experiment was coducted with White Leghorn hens in early laying stage to determine the influence of dietary crude protein (CP) concentration on the requirement for total sulfur amino acids (TSAA).The experiment was conducted for 8 weeks on 600 commerical layer hens, Hy-Line w-36 (six groups of 4 hens, 30 weeks old). This experiment arranged to factorial 5 5 in a complete random design with f...

evaluation of dietary calcium requirements in fayoumi laying hens

the experiment was carried out in poultry experimental station belonging to nrc, cairo, egypt. a total of 120 fayoumi layers, 45 weeks old, were randomly divided into four equal groups. each group included three replicates (10 hens in each). the first group was fed the control diet containing 3.3% gram ca, whereas, the other three received diets containing 2.8, 2.6 and 2.4% gram ca, respectivel...