background: following the ban on the use of growth stimulant antibiotics in many countries, interest has arisen in finding  a suitable alternative for antibiotics in poultry production. objectives: the aim of this study was to investigate the effect of supplementation of two levels of nano-copper (0 and 100 mg/kg) and two levels of mannan oligosaccharide (0 or 1 g/kg) as natural growth stimulan...

The study was conducted to evaluate the effects of citric acid and mannanase feed supplementation on growth performance broiler chickens. Three hundred twenty day-old unsexed Cobb chicks from a commercial hatchery plant were used in study. randomly assigned four treatment groups following completely randomized design. used: T1: Control, T2: 3% (w/w) Citric Acid supplementation, T3: 80 ppm β-Man...

It is well documented that aging has negative effects on fertility. With increasing age, the activity of antioxidant enzymes are reduced and because of roosters sperm composition, a high proportion of polyunsaturated fatty acids (PUFAs), the probability of sperm damage increases. The objective of the present study was to compare the effects of nano-selenium and sodium selenite on fertility in a...

This study aimed to determine the effect of probiotics lactic acid bacteria in drinking water on feed consumption, weight gain and conversion ratio broiler chickens. research is an experimental research. The animals used this were 28 male chickens strain Cobb 700 aged 20 days. P0 was not given addition probiotic bacteria, P1 Lactobacillus acidophilus 1ml/liter water, P2 casei 1ml/liter, P3 ferm...

Citation: Humphries AT, Ayvazian SG, Carey JC, Hancock BT, Grabbert S, Cobb D, Strobel CJ and Fulweiler RW (2016) Directly Measured Denitrification Reveals Oyster Aquaculture and Restored Oyster Reefs Remove Nitrogen at Comparable High Rates. Front. Mar. Sci. 3:74. doi: 10.3389/fmars.2016.00074 Directly Measured Denitrification Reveals Oyster Aquaculture and Restored Oyster Reefs Remove Nitroge...

This study was carried out to evaluate the effects of Satureja khuzistanica essential oils (SKEO) on performance, serum metabolites and differential counts of white blood cells in broiler chickens. A total of 280 one-day-old straight-run Cobb 500 broiler chickens were allocated into seven treatment groups with four replicates of 10 birds each from day 1 to 42 of age. The birds were continuously...

Feed additives are groups of non-nutritive products added to rations improve the efficiency animal production via an intake, gastrointestinal microflora, characteristics, meat quality, eggs poultry, vitality and health condition In this study performance Cobb strain broiler chickens fed diets containing different was investigated . A total 150 day old broilers were purchased brooded. two weeks ...