List of Articles gastrointestinal tract Open Access Article Abstract Page Full-Text 1 - Effects of Rice Hulls and Acidifier Supplementation on Growth Performance and Gut Physiology in Broiler Chickens S. Banibugari M. Sedghi R. Mirshekar A.H. Mahdavi A. Azarfar Open Access Article Abstract Page Full-Text 2 - The Effects of Dietary Inclusion of Arginine and Rice Hull on Growth Performance, Immune Responses, Intestinal Morphology, Tibia Bone Mineral Content and Intestinal Microbial Population of Broiler Chickens M. Abbasabadi S.M. Hosseini H. Naeimipour F. Izadi Yazdanabadi Open Access Article Abstract Page Full-Text 3 - Investigation of Microplastics ingestion in some commercial fish species from the Northern Oman Sea, Iran Mahsa Mobasheri lobat taghavi Tooraj Valinassab Hassan Nasrollahzadeh Saravi