Abstract
Abstract DLK1 (protein delta homolog 1) plays an important role in production of adipocytes, muscle development, wound healing, pancreas, liver and lung cells development and also in the development of meat quality, digestion and growth performance. Therefore, the goal of this research was to investigate the effects of different levels of fennel seed power in the diet on growth performance and on DLK1 gene expression in brain, adipose, femur (leg) muscle and rumen muscle tissues of Kermani lambs. Dietary treatments including different levels of fennel seed powder (0, 1 and 2 % of diet DM) were fed to 3 groups of lambs (each group contained 10 animals) for three months. Some physiological parameters relating to muscle and adipose development were measured. Tissues including brain, adipose tissue, femur (leg) muscle and rumen muscle were collected for expression analysis of the DLK1 gene. In this study, increasing the level of fennel seed powder in diets of lambs, increased the amount of DLK1 gene expression in the femur muscle and rumen tissues. Feeding 2 % fennel in comparison to the control diet (0 %) resulted in a significant difference in the amount of DLK1 gene expression in the femur (leg) muscle and in the rumen muscle (P
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