Effect of In Ovo Injection of Pine Pollen Extract on Growth and Sex Differences of Broiler Chicks

One of the problems of the poultry industry is a lack of flocks in broiler farms Although it in the factories of hatchery broiler chickens and turkey, often Sexing chickens to are selling commercial growers Because sex differences in growth rate and feed efficiency, separating males and females to the necessary recurrence needs of uniform and Specified market in terms of production carcasses. The current study was conducted to evaluate effect of in ovo injection of Pine pollen extract on growth and sex differentiation of broiler chicks. A total of 500 Ross (W-308) egg completely randomized with five treatments were assigned to 4 replicate of 25 egg in each pen. Treatments included: 1-.Non-injected control 2-.Shem control (Solvent injection) 3- injection 50 ppm of Pine pollen extract 4-injection 100 ppm of Pine pollen extract 5- injection 150 ppm of Pine pollen extract. The economic characteristics, hatching percent and the sex differentiation and the relative expression of IGF-I and IGF-II were evaluated. The results of this study showed that Pine pollen extract no significant effect on economic characteristics, hatching percent and the sex differentiation and the relative expression of IGF-II but the relative expression of IGF-I was significantly decreased in dose 51 and 100 ppm.