this study was conducted to evaluate consumption inputs, production costs, nutrient composition and performance in production of alfalfa hay and alfalfa silage. therefore, data on alfalfa hay production were collected from 75 farms in zanjan province, using a face to face questionnaire in the year 2012. a systematic random sampling method was used. then, two farms managed by silage harvesting s...

this study evaluated the effects of 0.25% activated charcoal added to sesame seed meal (ssm) in partial replacement of soybean meal (sbm) of juvenile clarias gariepinus diet on growth and haematological parameters for 70 day experimental period. six experimental diets were formulated as: control diet 1 (100% ssm without activated charcoal), control diet 2 (100% ssm plus 0.25% activated charcoal...

caspian kutum, rutilus frisii kutum, is one of the most commercially important fish species in the caspian sea, but there are few reports about the endocrinology of induced spawning in this fish. in the present study, 54 individuals of female broodstocks of kutum were studied for quantity and quality of propagation index, during march and april 2007. hormone treatments include: lhrh-a2 (1 ?g kg...

For studying the effects of different levels of testosterone propionate on growth, survival and sex-ratio, five different doses such as 125, 100, 75, 50, 25 mg hormone per kg feed were administered to 5-day old Clarias gariepinus fry through diet for a period of 40 days. The growth performance in terms of weight and length gain of the fry receiving 100 and 75 mg hormone per kg feed were signifi...

The synergistic effects of dietary vitamin C and selenium (Se) on induced methylmercury (MeHg) toxicity in juvenile olive flounder Paralichthys olivaceus were examined in this study. Nine diets containing 3 different vitamin C levels (0, 200 and 400 mg kg diet in the form of L-ascorbyl-2-monophosphate), 3 different Se levels (0, 2 and 4 mg kg diet in the form of selenomethionine) at a constant ...