@article {10.3844/ajavsp.2010.175.179, article_type = {journal}, title = {Ghrelin Gene Expression in Broiler Proventriculus Tissue are Changed by Feed Restriction, Different Dietary Energy and Protein Levels}, author = {Ghazanfari, Shokoufe and Nassiry, Mohammad Reza and Tahmoorespur, Mojtaba and Salehi, Abdolreza and Nobari, Karim}, volume = {5}, number = {3}, year = {2010}, month = {Sep}, pages = {175-179}, doi = {10.3844/ajavsp.2010.175.179}, url = {https://thescipub.com/abstract/ajavsp.2010.175.179}, abstract = {Problem statement: The aim of this study was to investigate the effects of feed restriction and different energy and protein contents of diet on ghrelin gene expression in broiler chicken. Approach: Feeding programs consisted of ad libitum and feed restriction, two energy levels (3100 and 2800 kcal ME kg-1) and three protein levels (22.3, 19.3 and 16.3% CP). Feed restriction was applied during 22-32 days of age. Proventriculus samples were collected at 21, 32 and 49 days of age. Ghrelin mRNA expression in proventriculus tissue was quantitate using Real Time quantitative PCR. Results: We found that ghrelin gene expression was increased in restricted chicks compared with those fed ad libitum at 32 days of age (p = 0.09) but feed restriction had no effect on ghrelin gene expression at 49 days of age. A positive response in ghrelin gene expression was achieved by decreasing energy level in the diet at 21 days of age (p}, journal = {American Journal of Animal and Veterinary Sciences}, publisher = {Science Publications} }