Ebrahim Ownagh; Naser Agh; Farzaneh Noouri; Afshin Amin zadeh; Nour mohammad Makhdoumi; Mehdi kharkan ghamsari
Abstract
Quantitative and qualitative capabilities of biomass production of Artemia in polyethylene tankers with 1.2 m3 diluted Inche salt lake water set at salinity of 60 ppt, and average initial stocking density of 2700 N/Lit. were evaluated during a culture period of 21 days in a batch culture system. A mixed ...
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Quantitative and qualitative capabilities of biomass production of Artemia in polyethylene tankers with 1.2 m3 diluted Inche salt lake water set at salinity of 60 ppt, and average initial stocking density of 2700 N/Lit. were evaluated during a culture period of 21 days in a batch culture system. A mixed diet including small amount of green algae Dunaliella, baker’s yeast and rice bran (as main food source) were used as food source. At the end of the experiment following results were obtained: an average total length of 8.02 mm, final survival of 25.5 percent, and an average biomass production of 2276 gr/m3. A feed conversion ratio of 0.41 was recorded for rice bran and yeast. Artemia reached a final weight of 3.45 mg at the end of the experiment. In the view point of nutritional value, produced biomass showed a protein content of 37.5 percent, while its fatty acid profile was rich in fatty acids with 18 carbons in their chain
Habibullah Mohammadi; Naser Agh; Amir Toukamechi; Farzaneh Nouri
Abstract
In this work the effect of Lactobacillus rhamnosus and black seed (Nigella sativa) powder was studied on growth and feeding parameters of rainbow trout. The feeding treatments used were (1) rainbow trout commercial diet (control)، (2) commercial diet supplemented with Lactobacillus rhamnosus ...
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In this work the effect of Lactobacillus rhamnosus and black seed (Nigella sativa) powder was studied on growth and feeding parameters of rainbow trout. The feeding treatments used were (1) rainbow trout commercial diet (control)، (2) commercial diet supplemented with Lactobacillus rhamnosus (108 CFU/Kg feed)، (3، 4، 5) commercial diet supplemented with the same probiotic bacteria and 25، 50 and 100 g black seed powder/Kg feed respectively. 900 rain bow trout fingerlings (average wt. 36g) were cultured in 15 concrete tanks containing 400 L underground well water for a period of 60 days. The fish were fed three times every day to apparent satiation. Maximum weight gain، standard length، specific growth rate، feed efficiency ratio and daily feed intake and minimum feed efficiency rate (FCR) were observed in group fed on feed containing probiotic bacteria and 25 g black seed/Kg feed compared to the control and the fish received 100 g black seed in their feed (P < 0.05). It was concluded that supplementation of 108 CFU Lactobacillus rhamnosus and 25 g black seed powder/Kg feed can positively influence the growth and feeding parameters of rain bow trout.
