El Iraqi, E. (2017). EFECT OF SUPPLEMENTING THE DIET WITH CAROTENOIDS-ENRICHED SPIRULINA ALGAE 1. ON PRODUCTIVE PERFORMANCE AND PHSIOLOGICAL RESPONSE OF DEVELOPED CHICKENS. Egyptian Poultry Science Journal, 37(2), 603-622.
Ebtsam El Iraqi. "EFECT OF SUPPLEMENTING THE DIET WITH CAROTENOIDS-ENRICHED SPIRULINA ALGAE 1. ON PRODUCTIVE PERFORMANCE AND PHSIOLOGICAL RESPONSE OF DEVELOPED CHICKENS". Egyptian Poultry Science Journal, 37, 2, 2017, 603-622.
El Iraqi, E. (2017). 'EFECT OF SUPPLEMENTING THE DIET WITH CAROTENOIDS-ENRICHED SPIRULINA ALGAE 1. ON PRODUCTIVE PERFORMANCE AND PHSIOLOGICAL RESPONSE OF DEVELOPED CHICKENS', Egyptian Poultry Science Journal, 37(2), pp. 603-622.
El Iraqi, E. EFECT OF SUPPLEMENTING THE DIET WITH CAROTENOIDS-ENRICHED SPIRULINA ALGAE 1. ON PRODUCTIVE PERFORMANCE AND PHSIOLOGICAL RESPONSE OF DEVELOPED CHICKENS. Egyptian Poultry Science Journal, 2017; 37(2): 603-622.
EFECT OF SUPPLEMENTING THE DIET WITH CAROTENOIDS-ENRICHED SPIRULINA ALGAE 1. ON PRODUCTIVE PERFORMANCE AND PHSIOLOGICAL RESPONSE OF DEVELOPED CHICKENS
The present experiment was conducted to study the effects of dietary supplementation with carotenoids-enriched Spirulina platensis algae (SA), flock age on carotenoids concentration in egg yolk, productive performance, egg quality and blood parameters of Bandarah chickens. One hundred and thirty five females with fifteen males from Bandarah chicken strain at 30weeks of age besides the same number from the same chicken strain at 56 weeks of age were housed in floor pens. The birds were weighed and randomly divided into five groups representing the dietary supplementations and commenced four months of laying production. The five experimental bird groups for each age were fed as follow: basal diet without supplementation of SA (control) , basal diet supplemented with 40 mg (group 2), 80 mg (group 3), 120 mg (group 4), 160 mg (group 5) SA/Kg diet. The results showed that there was a linear relationship between dietary SA concentration and carotenoids concentration in egg yolk. Supplementation the diet with 40 mg SA/Kg diet represented highest (P≤0.05) record of egg weight, egg mass and egg production compared to those for other treatment groups regardless of flock age. Moreover, the best significant improvement of feed conversion rate was recorded for group of chickens fed T2 and T5 treatments. The highest values for egg mass and egg production % were observed for interactions of T2 ˟ young age and T5 ˟ old age. Elder flock age represented significant increase for egg weight, egg shell index and yolk weight percentage compared to those for younger one. Also, supplementing the diets with 40 mg SA /Kg diet (T2) and 160 mg SA/Kg diet (T5) reduced(P≤0.05) cholesterol and malonadialdhide. In conclusion, Spirulina platensis algae could be used safety in layer diets at levels of 40mg/kg diet for young flocks and 160 mg/kg diet for old ones for realizing the best productive performance and improving the yolk color and some blood parameters.
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