Three experiments were carried out to estimate the optimal ratios of digestible phenylalanine + tyrosine (Phe + Tyr), histidine (His), and leucine (Leu) relative to digestible lysine (Lys) for performance and carcass criteria of Cobb-500 broilers from 8 to 17 d of age. In each experiment, 160 male chicks were allocated to a completely randomized experimental design with eight replicate pens, ea...

this experiment was conducted to compare the effects of prebiotic as alternative feed additive to an antibiotic growth promoter (bacitracin methylene disalicyate) on the growth performance and morphometrical parameters of the small intestine of broiler chickens. one hundred and forty four day old broiler chicks were randomly assigned to one of three dietary treatments for 6 wk and each treatmen...

To characterize some important eco-physiological aspects of  Alhagi pseudalhagi growth, the present investigation was conducted at the farm of Khorasan Agricultural Research Center during 2004-2005. Various botanical characteristics including root structure and existence of starch in root were studied. Number of seeds per pod, pod length and test weight were recorded. A number of field and pot ...

the effects of dietary nucleotide (nt) on growth performance and some haematological parameters of striped catfish (pangasianodon hypophthalmus) were investigated. different levels of the nt (0, 0.25, 0.5, 0.75, 1%) in the diet were used for 10 weeks starting on the fish weighted (1.52 ± 0.11 g). the results showed that nt supplementations did not improve final weight, weight gain, food conserv...

The effects of dietary nucleotide (NT) on growth performance and some haematological parameters of striped catfish (Pangasianodon hypophthalmus) were investigated. Different levels of the NT (0, 0.25, 0.5, 0.75, 1%) in the diet were used for 10 weeks starting on the fish weighted (1.52 ± 0.11 g). The results showed that NT supplementations did not improve final weight, weight gain, food conserv...

this study was performed to compare the biomar nutritional diet, shrimp, bloodworms on growth parameters, survival and blood parameter of juvenile aquarium joel (hemichromis bimaculatus). the experiment treatments consisted of blood worms, dried shrimp and control treatment that were biomar food. daily feeding was performed 4 times in a day to satiation and breeding fish took place over 8 weeks...

 Environmental enrichment is one of the methods for improving fish growth performance. In the present trial, the effects of both light color and music on growth performance and survival of goldfish (Carassius auratus) (initial mean weight: 4.15±0.08 g) were investigated for 2 months. Two light color treatments (red light and white light) and three music treatments (M0: without music, M30:30 min...

 Environmental enrichment is one of the methods for improving fish growth performance. In the present trial, the effects of both light color and music on growth performance and survival of goldfish (Carassius auratus) (initial mean weight: 4.15±0.08 g) were investigated for 2 months. Two light color treatments (red light and white light) and three music treatments (M0: without music, M30:30 min...

The aim of this study was to investigate the effect of red pepper (Capsicum annuum) extract on growth, blood, biochemical and non-specific immune parameters of 360 rainbow trout (Oncorhynchus mykiss) juveniles with average weight of 9.38±0.01 g. The fish were fed with a commercial diet containing 0, 0.25, 0.5 and 1% of C. annuum extract in 12 tanks (300L) with three replicates (30 fish per tank...