the aim of the present research was to study the effect of different concentrations of rosemary (rosmarinus officinalis l.) extract, (0, 10, 12.5, 16.6, 25 and 50) mg/l added to semen extender, on sperm qualitative and quantitative parameters after freezing-thawing process of rooster sperm. 10 ross strain rooster were used. semen samples were collected, 2 times a week. after adding the samples ...

the complexity of the genetic control of drought tolerance makes inevitable using of molecular methods with biometric approaches to its improvement in plants. present study was conducted by 121 advanced lines and varieties of soybean under two moisture levels, normal and drought stress with 21 microsatellite markers linked to drought tolerance in two regions, namely, rasht and gonbad-kavous. gr...

in order to possibility of improving physiological traits, yield and yield components of safflower (carthamus tinctorius cv. sina) by anti-transpiration application in rainfed condition, a research was carried out in factorial based on randomized complete block design (rcdb) with three replications in miyaneh region (east azarbaijan province - iran) in 2011. the treatments antitranspirant rate ...

two experiments were conducted to evaluate the nutritional value of purslane powder and its effects on performance, egg quality and reproductive system parameters of laying hens. one hundred and twenty laying hens (leghorn, hy-line w-36) were used in a completely randomized design with four treatments and five replicates. hens received diet supplemented with different levels of purslane powder ...

effects of different amounts of morning liming on blood ionic parameters and blood biochemical parameters of cultured carp ponds in dikjeh area of gonbad were investigated. 9 ponds (3 hectars) were chosen and divided in 3 treatments (1- liming 750 mg/l, 2- liming 1250 mg/l, 3- liming 1750 mg/l). liming had significant effect on blood hematocrite (p0.05) were observed between other blood paramet...

the effects of replacement of alfalfa hay with pistachio by-product (pb) at 0, 25, 50, and 75% (dm basis) on the ruminal parameters, dry matter intake (dmi) of female rayini goats, after kidding, and on the live weight gain (lwg) of their kids were investigated. five single-bearing female rayini goats each with a single kid were employed in each level of replacement. the basal diet contained ba...

this experiment was conducted to investigate the effect of synbiotic and two levels of dried garlic powder on performance during 1-49 and ileum morphology and microbial population at 49d of age in broiler chicks. the experiment was conducted in a completely randomized design with 5 treatments, 4 replicates of 10 chicks per replicate. the dietary treatments consisted of 1) control diet without a...

introduction today, with the increasing population and the need for strategic and industrial crops the farmers are simulated to grow these kinds of crops. thus, this subject has now been caused the inappropriate use of land and natural resources. on the other hand, the natural environment resources have limited the ability to use its resources and the climate change intensifies this limit abili...

a water soluble, bronsted acid, 5-sulfosalicylic acid as an efficient organocatalyst was used for the synthesis of physiologically active 2-substituted benzimidazole derivatives from o-phenylenediamine and aromatic aldehydes in ethanol at reflux condition. cost-effectiveness, use of non-hazardous solvents, metal free and commercially available catalyst, single-step, environmentally friendly gre...

nitrogen (n) affects adversely the tobacco yield quantity and quality as it increases yield, chlorine and nicotine contents, but decrease potassium content. this experiment was aimed at optimization of (the balance between) n concentration in leaf, stem and root to increase both yield quantity and quality (high potassium, low chlorine and medium nicotine contents) using artificial neural networ...