The effect of feeding nutritionally different diets in sequential or loose-mix systems on the performance of laying hen was investigated from 16 to 46 wk of age. Equal proportions of whole wheat grain and protein-mineral concentrate (balancer diet) were fed either alternatively (sequential) or together (loose-mix) to ISA Brown hens. The control was fed a complete layer diet conventionally. Each...

The aim of the present experiment was to investigate how different types of dietary fats and levels of vitamin E affect the fatty acid profile of egg yolk during refrigerated storage of table eggs. ISA Brown hens (n=90; 28 weeks old) were randomly assigned to five experimental diets. The dietary treatments included: (1) control diet without fat supplementation and added vitamin E (2) 5% Alifet ...

This study was conducted in a poultry farm of the Department Animal Production / College Agriculture/University Anbar, from 20/7/2021 to 12/10/2021, aiming effect adding zeolite diets on productive performance and some physiological qualities characteristics laying hens. Seventy-two hens Lohman Brown were used this experiment at age 43 weeks distributed randomly six treatments with four replica...

Eggshell and bone quality were investigated in 72 weeks of age (WOA) Lohmann Brown Dekalb White raised at rearing spacing allowance (SA) 247 299 cm2/bird from day 0 to 16 transferred common SA (755 cm2/bird) for lay cycle. thickness (EST), breaking strength (ESBS), along with tibia femur weight, (BS), length, ash measured WOA. Strain did not interact on any above parameter (P > 0.05). Hens r...

In Serbia, by 2020, conventional cages will no longer be permitted and hens housed in furnished cages. The study was conducted during the winter season on four rearing systems of Lohman Brown hens. For welfare assessment were used indicators from Welfare quality protocol for poultry. All fecal samples parasites qualitatively quantitatively examined. results showed that each housing system had p...

This experiment was conducted to measure the effects of olive leaf powder on performance, egg yield, egg quality and yolk cholesterol level of laying hens. A total of 120 Lohmann Brown laying hens of 22 weeks old were used in this experiment. The birds were fed on standard layer diets containing 0, 1%, 2%, or 3% olive leaf powder for 8 weeks. Egg weight and yield were recorded daily; feed intak...

A study was conducted to evaluate the effects of dietary supplementation of phytase B (product of the Aspergillus niger phyB gene expressed in Trichoderma reesei) on feed intake, laying performance, eggshell quality, and on phosphorus and calcium balance in laying hens. Seventy-two, 40 weeks old Hy Line Brown hens were fed for 14 weeks the following four phosphorus-deficient (0.12% nonphytate p...

This study was conducted to evaluate the effect of dietary β-mannanase supplementation and palm kernel meal (PKM) inclusion (5%) on laying performance, egg quality and nutrient utilizability of laying hens with 73 weeks of age. A total of 240 Lohmann brown laying hens with average 77.5% egg production were randomly allocated with 60 hens per treatment, 4 replicates per treatment and 15 hens per...