Document Type : Research Paper
Authors
- Shadie Asaddi 1
- Seyed Ali Mirghelenj 2
- mohsen daneshyar 3
- Ali Hashemi 4
- Sina Payvastegan 5
- Hamed Khalilvandi-Behroozyar 6
1 PhD student in poultry nutrition, Department of Animal Sciences, Faculty of Agriculture, Urmia University, Urmia, Iran,
2 Associate Professor, Department of Animal Science, Urmia University, Urmia, Iran.
3 Department of Animal Sciences, Faculty of Agriculture, Urmia University, Urmia, Iran,
4 Department of Animal Sciences, Faculty of Agriculture, Urmia University, Urmia, Iran
5 Assistant Professor, Department of Animal Science, Faculty of Agriculture, University of Urmia, Urmia, Iran
6 Animal Science Department, Urmia University
Abstract
The present study was conducted with the aim of investigating the effect of spirulina supplementation in diets containing different levels of fish oil on performance, blood and liver antioxidant parameters, and serum lipid parameters in laying hens. For this purpose, a number of 288 laying hens were used in a 2×3 factorial design, with 6 replications and 8 birds in each replication. Experimental treatments included diets containing 3 levels of fish oil (0, 1.5 and 3% of diet) and 2 levels of Spirulina platensis (0 and 5 g/kg diet). The results showed that the hens treated with 1.5 and 3% fish oil and 5 g of spirulina had the highest egg weight and mass, which were significantly higher than the control treatment (P<0.05). Diets containing 3% fish oil decreased the total antioxidant capacity, glutathione peroxidase and superoxide dismutase of the liver and the total antioxidant capacity of the serum, which the use of 5 g of spirulina increased the mentioned parameters (P<0.05). The interaction effect of spirulina and fish oil had synergistic effects on the concentration of triglyceride and LDL, and the levels of 1.5 and 3% fish oil along with 5 g of spirulina significantly reduced the concentration of triglyceride and LDL. In general, based on the obtained results, it is recommended to use 3% fish oil in the feeding of laying hens in order to improve animal performance while reducing blood fat, but to prevent lipid oxidation, it is necessary to use spirulina as a natural antioxidant.
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