تاثیر سطوح مختلف اسید لینولئیک کنژوگه بر عملکرد و جوجه درآوری مرغ های مادر گوشتی

The objective of this study was to investigate effect of conjugated linoleic acid (CLA) on egg production and hatchability in broiler breeders. This experiment was conducted in a completely randomize design with three levels of conjugated linoleic acid (0, 0.25 and 0.5 percent of diet) and four replicates. Each experimental unit consist ten broiler breeders (ROSS 308). The experiment was taken at 50 week and continues to four weeks. During the experiment, egg production, egg weight, egg mass, hatchability and embryonic mortality were recorded weekly, whereas yolk height, yolk diameter, shell thickness, shell weight and shape index were assayed in the entire of experiment. Results showed that supplementation of 0.5 percent CLA to diet, significantly increased egg albumin and yolk height in compare to 0.25 percent. In conclusion, addition of CLA didn’t have significant effect on broiler breeder productive performance and hatchability.