Proximate analysis of different groups of irradiated alginic acid

Seaweeds contain significant quantities of lipids, protein, vitamins and minerals. Aquavac Ergosan contains 1% alginic acid extracted from two brown seaweeds, Laminaria digitata and Ascophyllum nodosum. Both in vivo and in-vitro researches have mainly been focused on the effect of Ergosan on fish growth, survival rate, reproductive performance and innate immunity in blood and epidermal mucus. Despite numerous studies on the effects of Ergosan on immune system of aquatic animals and evaluation of seaweeds in proximate analysis, there is no data available on proximate analysis of irradiated Ergosan extract [alginic acid]. Therefore, the aim of this study was to assess the effect of on different groups of irradiated alginic acid [10, 20, 30, 40 and 50 KGy] for analyzing proximate composition. Alginic acid was prepared from the sonicated Ergosan extract. The Alginic acid extracted from Ergosan was irradiated with a gamma cell. The protein and lipid content and Moisture and ash were recorded. Statistical analysis showed no significant differences among all of groups in terms of protein, lipid, ash and moisture. Radiation processing is a very convenient tool for imparting desirable effects in polymeric materials. The polysaccharide degradation by gamma or ultraviolet irradiation is free of initiators. High energy radiation technique can be effectively used to decrease the molecular weight of different polysaccharides such as alginate and Chitosan. Based on the results of this study, gamma irradiation of alginic acid as natural polysaccharide had no effect on crude protein, crude lipid, moisture and ash

[Effects of electron beam irradiation and organic acid on production performance and immune responses in broiler chickens]

Electron beam irradiation and using of organic acids cause reducing or eliminating the microbial load of poultry diets. This study was conducted to compare the effect of electron beam irradiation and organic acids on diet microbial load, immune system, serum lipids, intestinal morphology, organs relative weight and growth characters of broilers. 300 day-old male broilers [Cobb 500] were randomly divided into 5 experimental groups, so that each group included 4 replicates with 15 birds per pen. Treatments were basal diet as control, irradiate diet by 3, 5 and 7 kGy doses and diet containing Formycin 0.2%. The highest and lowest of daily weight gain average were observed in finisher and total period by 7 kGy and control groups, respectively [p<0.05]. Moreover, a significant reduction were observed in microbial load of diets among treatments [p<0.05]. Highest [5.66] and lowest [4.17] antibody titer against SRBC were observed in Formycin and control groups, respectively [p<0.05] after 2[nd] injection. Highest and lowest percentage of breast weight and abdominal fat were observed in 7 kGy and control groups, respectively [p<0.05]. Greatest villus height [1089 micro m] and villus height to crypt depth ratio [5.84] in jejunum were obtained in 7 kGy group [p<0.05]. Experimental dietary irradiation improves broiler performance, that its trend is more evident with increasing exposure dose