توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Daphnia magna as live vector using for probiotics lactobacilli and yeast (S.cerevisiae ( in promotion of growth performance of Persian sturgeon (Acipenser persicus) larvae
نویسنده(ها): ، ،
اطلاعات انتشار: کنفرانس بین المللی توسعه با محوریت کشاورزی، محیط زیست و گردشگری، سال
تعداد صفحات: ۶
In this study Daphnia magna as a live vector were used in feeding of Persian sturgeon (Acipenser persicus) larvae. This feeding study was done in two different trials. This experiment was conducted in a completely random design. In first trial the D. magna were bioencapsulated with three concentrations of 8, 8.30 and 8.48 Log CFU\liter and fed by Acipenser persicus larvae in experimental treatment of sturgeon–2 to sturgeon–4 respectively. In control (sturgeon–1) the fish larvae were fed by Daphnia magna without bioencapsulation with yeast. In second trial the blends of Lactobacillus plantarum, L. delbrueckii subsp., L. acidophilus and L. rhamnosus as a commercial probiotic were used for bioencapsulated of Daphnia magna in three concentration of 2×107, 4×107 and 6×107 cells per liter in suspension of broth and fed by A. persicus larvae in experimental treatments (treatments of A1, A2 and A3). In both of trials, the Persian Sturgeon larvae were fed on the base of the 3 percent of their body weight for six times a day. The results indicated that the S. cerevisiae significantly enhanced leveles of body composition in experimental treatments in comparison with control (p0.05). In experimental treatments the yeast of S. cerevisiae had positive and significant effects on the final body weight, feed conversion efficiency (FCR) and Lipid Productive Value (LPV) (p0.05). Also the results indicated in second trail, that the blends of probiotic lactobacillus significantly promoted levels of crude protein, carcass dry matter and ash in experimental treatments in comparison with control treatment (p0.05), but in the treatment A3, the crude Lipid was significantly decreased (p0.05). In this studyThe significant positive correlation was observed between the levels of carcass dry matter (N=12, P<0.05, r=0.58), crude protein (N=12, P<0.05, r=0.70) and ash with CFU\liter of probiotic lactobacillus in suspension of broth.Results of this study also showed that using bioenriched Daphnia magna with different concentration of probiotics lactobacilli and S. cerevisiae could cause different effects on growth parameters and feeding efficiency.<\div>

۲The effects of A–Max (Saccharomyces cerevisiae culture concentrate) as a promoter for enhancement of growth and feeding performance of Common Carp (Cyprinus carpio) fingerling
نویسنده(ها): ، ،
اطلاعات انتشار: کنفرانس بین المللی توسعه با محوریت کشاورزی، محیط زیست و گردشگری، سال
تعداد صفحات: ۹
A 60–days feeding trial was conducted with the Common Carp (Cyprinus carpio) fingerling, using yeast of Saccharomyces cerevisiae culture concentrate under the commercial title of A–Max. The A–Max product be used in this study from Arm & Hammer Animal Nutrition Co. (USA) was prepared. Three concentrations of A–Max (0.4, 0.8 and 1.2 g per Kg of diet) were used respectively. A diet containing Faradaneh feed, without the A–Max, was used as a control diet (CF). The experimental diets (F1, F2 and F3) were mixed with A–Max suspension and dried at 40°C in incubator for 5 h. Healthy fingerling of Common Carp was provided from the warm water cultivable fish center of Chamran (Golestan province–Iran). This experiment was conducted in a completely randomized design. Twelve circular fiberglass tanks (capacity of 20 liters) with three replicates for experimental and control treatments, were used in this trial. Common Carp fingerling were fed based on the 5% of their body weight for three times a day with diets of F1, F2 and F3 in experimental treatments and control diet (CF) in control treatment respectively. In the final of experiment, some growth and feeding parameters of Common Carp fingerling were calculated. The results indicated that the A–Max had different effects on the growth parameters and survival rate in Carp fingerling in experimental treatments. The body weight of Carp fingerling increased in experimental treatments and had significant difference in comparison with control (p0.05). The A–Max had significant positive effects on the specific growth rate (SGR), thermal growth coefficient (TGC) and Velocity of growth body weight (VW) in comparison with control (p0.05). The highest of PER (2.67) and LER (1.68) were significantly higher than control (p0.05). The experiments showed that the A–Max, Saccharomyces cerevisiae culture concentrate in feeding of Common Carp fingerling highly increase the growth and promotion of feeding performance.<\div>
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