Browsing by Author "Akca, Ismail"

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Determination of Nutrient Content and Digestibility Characteristics of Prangos Ferulacea (L.) on Grazing Lands of Eastern Anatolia
(Tubitak Scientific & Technological Research Council Turkey, 2015) Aldemir, Resit; Bingol, Nuriye Tugba; Karsli, Mehmet Akif; Akca, Ismail
The aim of this study was to compare nutrient content, and in situ protein and organic matter degradation kinetics of Prangos ferulacea (L.) (locally called helis), a naturally growing plant on the top of Mount Artos, with those of alfalfa. P. ferulacea plants used in the study were collected from three different parts of Mount Artos in Van Province over two years. While organic matter content and in vitro organic matter digestibility of P. ferulacea were significantly higher, neutral detergent fiber, acid detergent fiber, and acid detergent insoluble nitrogen contents were significantly lower compared with those of alfalfa (P < 0.01). In general, in situ dry matter, and organic matter and crude protein degradability of P. ferulacea were significantly higher compared with those of alfalfa starting from 6 h of incubation (P < 0.05). Organic matter and crude protein degradability of P. ferulacea was 79.15% and 85.31%, respectively, after 48 h of incubation. By-pass protein content and both organic matter and crude protein degradation rates were similar between samples (P > 0.05). It can be concluded that P. ferulacea has a better nutrient quality compared with even high quality alfalfa based on nutrient contents and digestibility values, and therefore substitution of alfalfa by P. ferulacea in the diet of ruminant animals is feasible.
Effect of Molasses and Sulphuric Acid Addition To Barley/Hungarian Vetch Bi-Crop Silages
(Garuda Scientific Publications, 2006) Bingol, N. Tugba; Karsli, M. Akif; Bolat, Duran; Akca, Ismail
To determine the effects of sulphuric acid (H2SO4) and molasses (M) on silage quality and in vitro dry matter digestibility, barley (157137 Tokak) and Hungarian vetch (Viciapannonica Crantz) were planted together at the rate of 3:1 and harvested at the milk stage of barley and conserved in 1 kg jar, laboratory silos. Silages were treated with no additive (control silage), 6% M, 0.3% 2N H2SO4, 0.3% 4N H2SO4, 0.3% 2N H2SO4 + 6% M and 0.3% 4N H2SO4 + 6% M. Dry matter was significantly higher in silages treated with molasses and with 4N H2SO4 + M (P < 0.05). Ash, organic matter, crude protein, neutral detergent fiber and acid detergent fiber concentrations were not affected by additives. The pH values were significantly lower in silages treated with 2N H2SO4 and 4N H2SO4 (P < 0.05). Silages treated with molasses, 2N H2SO4 and 2N H2SO4 + M had significantly higher lactic acid concentrations (P < 0.05). The addition of 2N H2SO4 + M and 4N H2SO4, + M into silages increased silage propionic acid levels (P < 0.05). In vitro dry matter digestibility of silages with additives, except 4N H2SO4 + M, were significantly higher compared with control (P < 0.05). Addition of molasses and 2N H2SO4 may be considered to improve quality of barley + Hungarian vetch bi crop silage.