A completely randomized design experiment consisting 5 treatments with 5 replicates (6 birds per replicate) was carried out by allotting 150 white Lohman laying hens at 18 weeks old. The experimental diets were prepared by addition of different levels of E-selenovit supplement (0.0, 35, 65, 80 and 100 mg / kg of feed) to the diets. The diets were isonitrogenous and isocaloric and of fered ad li...

this experiment was conducted to investigate the effects of four medicinal plants with antibacterial property on immune system and ileum bacteria population of broiler chicks.a total 336 day-old male ross broiler chicks were used in a crd design with 6 treatments and 4 replicates per each treatment. cuminum l, mentha piperita l, achillea l, teucrium polium l, in levels of 1.5, 0.3, 0.2 and 0.2 ...

the aim of this study was to evaluate the effects of three lighting programs on immune system and performance of broiler chickens. a total of 288 seven day-old male broiler chicks (ross-308) were randomly distributed between three treatments. each group was housed in the separated room with eight pen and 12-birds per pen. the management conditions were similar for all treatments throughout the ...

The present study was carried out to examine the effects of a vitamin premix (VP) reduction or withdrawal from finisher diet (29-43 days) on performance, immuno-competence, and characteristics of leg bones and meat lipid oxidation of chickens fed on corn-soybean meal based diet. A total of 900 male broiler chickens (Ross 308) were allocated to five treatment groups (0, 33%, 66%, 100% and 133% V...

The aim of this study was to investigate the effect of commercial herbal and chemical medicines on growth performance, serum lipids, intestinal selected bacterial population and intestinal morphology of broiler chickens. In this study, 450 day-old female broiler chickens (Arian strain) were divided into 10 treatments with three replicates of 15 chicks per replicate. On day 14 of the experiment,...

The semi-essential nutrient creatine is an important molecule in the cellular energy metabolism for short term energy storage. Energy from surplus adenosine tri-phosphate (ATP) can quickly be overtaken by creatine and vice versa. Supplemental guanidino acetic acid (GAA) is a natural precursor of creatine and might be used as creatine source. Either no (negative control), 0.20, 0.40, or 0.60 g/k...

An experiment was conducted to evaluate the additional effects of two ground medicinal herbs oat bran (OB) and dill seed (DS) on serum lipids, carcass characteristics and growth performance in Japanese quails. A total of 240-twenty one day of age male Japanese quails were allocated randomly to 3 treatments with 4 replicates of 20 birds per cage. Birds during the 22-49 days on trial received 3 d...

An experiment was conducted to evaluate different levels of “new generation” distillers dried grains with solubles (DDGS) in broiler diets throughout a 49 d growing period, based a standardized nutrient matrix derived from a composite of literature values. Diets were formulated based on digestible amino acid content to typical U.S. poultry industry standards to contain 0, 5, 10, 15, 20, or 25% ...

in order to determine the optimal levels of energy and protein in grower diet of japanese quail, 360 dayold japanese quails were used in a 3×3 factorial arrangement of dietary treatments that comprised threelevels of metabolisable energy (2750, 2850, and 2950 kcal/kg) and three levels of crude protein (24, 26and 28 percent) with four replicates per treatment in a completely randomized design. f...

a 42-d trial was conducted to compare the effects of probiotic, prebiotic and synbiotic supplements on growth performance, morphology of the jejunum, serum lipid profile and antibody response of broiler chickens. a total of 400 one-d-old male broiler chicks were randomly divided into four treatment groups of four replicates (25 birds per replicate) and fed corn-soybean meal diets. the dietary t...