Ecology

Biology

Total cholesterol

Spirulina (dietary supplement)

Feed conversion ratio

Animal science

Raw material

Alanine aminotransferase

Cholesterol

Endocrinology

Food science

Laying

Physics

Astronomy

Body weight

Haugh unit

Feed additive

Broiler

Yolk

Deleted Journal

Summary This study aimed to determine the effect of different dietary levels of Spirulina platensis on the laying performance, egg quality traits and hepatoprotective status of laying hens. A total of 160 Norfa laying hens (38 weeks old) were randomly allocated to one of 4 dietary treatments, with 4 replicates per treatment. The basal diet was used and three additional diets were prepared by supplementing 0.1, 0.2 or 0.3% of Spirulina platensis to the basal diet. The diets were fed to laying hens ad libitum for 8 weeks. Egg production, feed intake, feed conversion ratio, egg weight, egg mass, internal and external egg quality parameters were recorded. Egg yolk cholesterol, serum cholesterol, alanine aminotransferase (ALT) and aspartate aminotransferase (AST) concentrations were measured.

Effect of Spirulina platensis as a feed additive on laying performance, egg quality and hepatoprotective activity of laying hens