Browsing by Author "Nursoy, H."

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Effects of Sodium Bicarbonate, Magnesium Oxide and Dried Sugar Beet Pulp in Diets of Dairy Cows on Milk Yield, Milk Composition and Rumen Fluid and Some Blood Parameters
(2010) Kaplan, O.; Deniz, S.; Akif Karsli, M.; Nursoy, H.; Avci, M.
The objective of this study was to evaluate the effect of buffering agent (NaHCO3 and MgO) or substituting Dried Sugar Beet Pulp (DSBP) with barley on milk yield, composition of milk, some blood parameters and ruminal fermentation in cows. In the experiment, four lactating Holstem cows with similar age, lactation period and milk yield were utilized. Cows with second phase of lactation were selected. Treatments consisted of control (40% Barley), control+1 % NaHCO3 (NaHCO3), control+1 % NaHCO3+0,5% MgO (MgO) and barley substituted with DSBP. All diets were calculated to be isocaloric and iso-nitogeneous. The experiment was a 4×4 Latin square design. While milk yield was significantly higher in animals fed diets containing NaHCO3+MgO compared with animals fed control, compositions of milk were not significantly different among the groups. Addition of NaHCO3, NaHCO3+ MgO significantly increased (p<0.05) acetic acid concentrations but did not affect blood parameters. In conclusion addition of NaHCO3 or NaHCO3 + MgO increased milk yield but did not affect composition of milk. An increase m ruminal acetic acid concentrations and acetic/propiomc acid ratio due to buffering agent is an important finding. It must be revaluated the use of supplements in feeding diets since they decrease propionic acid level. © Medwell Journals, 2010.
The Influence of Changing Dietary Cation-Anion Differences and Dietary Na/K Ratios on Growth and Feed Efficiency in Rainbow Trout, Oncorhynchus Mykiss
(2010) Arabaci, M.; Nursoy, H.; Diler, I.
The effects of diets, regulated in respect of both dietary cation-anion difference and dietary Na+/K+ ratio (dietary CAD-Na/K level), on growth, feed efficiency and serum mineral concentration in rainbow trout were investigated. Five dietary CAD-Na/K levels (101-0.4; 352-1.32; 560-2.15; 703-2.63; 981-3.53 meq kg-1 mol/mol) were used in the experiment. A total of 500 fish, 2 groups for each treatment consisting of 50 fish with a mean initial body weight of 87 ±1.75 g were used in the trial. The experiment lasted fifteen weeks. Increasing both dietary CAD level and dietary Na/K ratio has significant positive effects on growth performance and feed efficiency in rainbow trout. It was concluded that weight gain, specific growth rate, thermal-unit growth coefficient and protein efficiency rate increased linearly, feed conversion rate decreased linearly and daily feed intake was not influenced with increasing dietary CAD-Na/K level between 101-0.4 and 981-3.53 (meq kg-1 mol/mol). Na, K, Cl and CAD level in the serum remained constant among groups. The dietary CAD-Na/K levels between 560-2.15 and 981-3.53 (meq kg-1 mol/mol) produced the best growth for rainbow trout. Use of Na2CO3 and NaHCO3 as a cationic supplement andNa source was appropriate for making diet cationic and increasing the CAD level and Na/K ratio of diet. © Medwell Journals, 2010.