Browsing by Author "Arabaci, Muhammet"

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Determantion of Growth Parameters, Digestibility and Nitrogen-Phosphorus Enviromental Impacts of Enzyme Supplementation To Soybean Based Diet in Rainbow Trout (Oncorhynchus Mykiss)
(Foundation Environmental Protection & Research-fepr, 2012) Diler, Ibrahim; Sevgili, Huseyin; Arabaci, Muhammet; Emre, Yilmaz
This study was carried out to determine the effects on growth performance, feed utilization, apparent digestibility and reduce environment pollution waste output of nitrogen and phosphorus of diets based on Soybean Meal (40%) supplemented with exogenous enzymes in rainbow trout (Oncorhynchus mykiss) culture. Trout groups was began (initial mean weight 87.00 +/- 1,5g) method of random plots with 3 replications of 50 fish/pond with the ratio of 1050 fish with 6,0 metrik tonne in concrete ponds. 43% protein - 12% fat diet was used as the with no added enzyme in control group (K0) and diet supplemented with %02 protease enzyme (P), %02 mix enzyme (cellulose, xylanase, endo-beta-1,3:1,4-glucanase (M), %02 pyhtase enzyme (F), %01 protease + %02 mix enzyme (PM), %01 protease + %01 phytase (PF) and %01 mix enzyme + %01 phytase (MF) were tested in total 7 groups. About of growth performance were found while condition factor (1,21-1,23) were statistically similar (p>0.05) however growth rate (173,68-177,27), specific growth rate (1,118-1,340) and feed conversion ratio (1,26-1,30) significantly different among groups (p<0.05) at the end of the experiment. P and F groups significantly improved specific growth rate, feed conversion ratio better than control group. In this study, showed the highest nitrogen apparent digestibility coefficient (ADC-N) (85,49 +/- 1,98) in group of P while the poorest value (72,82 +/- 0.01) group of K0 obtained, respectively (p<0.05). Also the best (58.57 +/- 0.49) and lowest (42.85 +/- 1.98a) ADC-P for phosphorus was obtained from F and K0, respectively (p<0.05). The highest (53,71%) and lowest (17,69%) retained nitrogen was held in the P and K0 groups (p<0,05). Also the dropped to water (discarded), nitrogen effluent was lowest (23,31 g/kg) in the P group and highest (46,91 g/kg) in the K0 group, respectively (p<0,05). In addition, highest (68,74%) and lowest (46,12%) retained phosphorus levels were obtained in the F and K0 groups, respectively. Also the dropped to water (discarded) while phosphorus levels reached the maximum (6,.94 g/kg) in K0 group and minimum value was obtained in the F group (4,85 g/kg)(p<0,05).
The Effects of Diets Supplemented With Cacl2 and Rock Salt on Growth, Feed Efficiency and Some Serum Mineral Levels in Rainbow Trout, Oncorhynchus Mykiss
(Kafkas Univ, veteriner Fakultesi dergisi, 2010) Diler, Ibrahim; Arabaci, Muhammet; Nursoy, Huseyin; Goncu, Muharrem
In this study, the effects of CaCl2 (2%) supplemented diet, rock salt (RS, 2%) supplemented diet and control diet (no supplement) on the weight gain, specific growth rate, daily feed intake, feed conversion rate, protein efficiency rate and serum mineral concentration (Na, K, Cl) were investigated in rainbow trout. RS was used for increasing the CAD and Na/K ratio of the control diet and CaCl2 was used for decreasing the CAD level of the control diet. A total of 300 fish, 2 replications for each treatment consisting of 50 fish with a mean initial body weight of 88.2 g were used in the experiment. The experiment lasted fifteen weeks. The diet supplemented with 2% RS improved significantly the weight gain, feed conversion rate and protein efficiency rate in rainbow trout compared to 2% CaCl2 supplemented group and control (P<0.05). Dietary RS supplementation also improved the specific growth rate and daily feed intake. However, this improvement was not statistically significant (P>0.05). Dietary 2% CaCl2 supplementation did not significantly affect the weight gain, specific growth rate, daily feed intake, feed conversion rate and protein efficiency rate in rainbow trout compared to control diet (P>0.05). Na, K and Cl level of the serum and mortality rate were not statistically different among the groups (P>0.05). The dietary 2% RS supplementation produced a better growth and feed efficiency for rainbow trout compared to dietary 2% CaCl2 supplementation and control diet. Added RS to diet was appropriate for making cationic the diet and increasing the CAD level and Na/K ratio of diet.
Enzyme Supplementation To Soybean Based Diet in Gilthead Sea Bream (Sparus Aurata): Effects on Growth Parameters and Nitrogen and Phosphorus Excretion
(Kafkas Univ, veteriner Fakultesi dergisi, 2008) Ayhan, Veysel; Diler, Ibrahim; Arabaci, Muhammet; Sevgili, Hueseyin
The aim of the present study was to examine the effects of the diets based on soybean meal supplemented with exogenous enzymes on growth performance, feed utilization, apparent digestibility and waste output of nitrogen and phosphorus in gilthead sea bream (Sparus aurata) culture. Diets consisted of 40% fish meal (FM) and 25% dehulled hexane extracted soybean meal (SBM) in commercial feed (TM) and 25% fish meal (FM) and 40% dehulled hexane extracted soybean meal (SBM) in control group (CO), and diet supplemented with enzyme 1 (PRT= Protease; 2 g/kg(-1)), diet supplemented with enzyme 2 (MIX; cellulose, xylanase, endo-beta-1,3: 1,4-glucanase; 2 g/kg(-1)) and diet supplemented with enzyme 3 (PHY: Pyhtase; 2 g/kg(-1)). A stocking design at 55 fish each tank, gilthead sea bream (initial weights 89.50 +/- 1.5 were randomly total of 825 fish allocated into 15 tanks and fed five experimental diets. While weight gain (125.00-133.50) and specific growth rate (0.42-0.50) were statistically similar (P>0.05), feed efficiency ratio (2.52-2.90) and condition factor (1.85-2.08) significantly different among groups (P<0.05) at the end of the experiment. Addition of PRT and PHY into control significantly improved specific growth rate, feed efficiency ratio and condition factor. In this study, showed the highest nitrogen apparent digestibility coefficient (83.20 +/- 1.98) in group of PRT whilst the poorest value obtained (69.72 +/- 0.01) group of CO. The best (58.57 +/- 0.49) and the lowest (42.85 +/- 1.98) ADC for phosphorus were obtained from PHT and CO, respectively (p<0.05). In conclusion, this study has shown that dietary different enzyme supplementation can have a positive effect on growth, feed utilization and digestibility in gilthead sea bream. This positive effect has been not only alleviate the negative effect of replacing dietary FM with SBM but also provide about better performance compared to fish fed a higher FM containing diet.