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The Effect of Myrtus Communis Oil Extract on Growth Performance and Immune Responses in Ross and Cobb Strain Broilers

Majid Goudarzi, Iman Samiei, Shahram Nanekarani, and Farid Nasrolahi
Department of Animal Science, College of Agriculture, Boroujerd Branch, Islamic Azad University, Boroujerd, Iran
Abstract—This experiment was carried out to compare the performance and immune responses in Ross and Cobb broilers fed diets containing Myrtus communis oil extract (MCE). A total of 224 one-d-old broiler chickens randomly allocated to each of the 4 treatment groups, each with 4 replicate pens of 14 chicks. The experimental diets included two treatments for Ross strain – control (RC) and the diet contain 500mg/Kg MCE (RM) - and two treatments for Cobb strain –control (CC) and the diet contain 500mg/Kg MCE (CM). The performance parameters were measured during the experimental period and antibody titers against Newcastle disease virus were determined. The using of MCE in diet decreased feed intake and feed conversion ratio (FCR) but had not significant effect on daily body weight gain and live body weight. The lowest amount of feed intake and FCR were related to RM group. The relative weight of bursa of Fabricius increased significantly by using of MCE in both strains. In general, the results indicate that dietary inclusion of 500 mg/kg MCE can improve performance and immune system in Ross and Cobb broiler strains. 
 
Index Terms—broiler, Cobb, immune system, Myrtus communis, performance, Ross

Cite: Majid Goudarzi, Iman Samiei, Shahram Nanekarani, and Farid Nasrolahi, "The Effect of Myrtus Communis Oil Extract on Growth Performance and Immune Responses in Ross and Cobb Strain Broilers," Journal of Advanced Agricultural Technologies, Vol. 3, No. 1, pp. 10-14, March 2016. Doi: 10.18178/joaat.3.1.10-14
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