بررسی اثر وزن اولیه بر بیان ژن IGF-1 در عضله سینه بلدرچین ژاپنی

     In the present study the effect of initial weight on IGF-1 gene expression in breast muscle of Japanese quail was investigated using completely randomized design. Two hundred pieces birds were randomly divided into two different groups including light and heavy weight. IGF-1 gene expression levels were measured using the Real time PCR techniques in breast muscle of the Japanese quail at 24 days of age. Also in this age, the body weight and bone characteristics such as Femur, Humorous and tibia were measured. The results indicate that IGF-1 gene expression in light weight were significantly higher than the heavy weight group (P<0.05). Generally, the bone characteristics in the heavy weight group were significantly heavier than the light weight group (P<0/05). The results indicate that IGF-1 secretion increases in proportion to the animal’s body weight, so that the expression of this gene is reduced in the animal approaches to normal weight of this breed (its breed capacity).